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-rw-r--r--third_party/git/trace2/tr2_cfg.c89
-rw-r--r--third_party/git/trace2/tr2_cfg.h19
-rw-r--r--third_party/git/trace2/tr2_cmd_name.c30
-rw-r--r--third_party/git/trace2/tr2_cmd_name.h24
-rw-r--r--third_party/git/trace2/tr2_dst.c307
-rw-r--r--third_party/git/trace2/tr2_dst.h37
-rw-r--r--third_party/git/trace2/tr2_sid.c112
-rw-r--r--third_party/git/trace2/tr2_sid.h18
-rw-r--r--third_party/git/trace2/tr2_sysenv.c127
-rw-r--r--third_party/git/trace2/tr2_sysenv.h36
-rw-r--r--third_party/git/trace2/tr2_tbuf.c47
-rw-r--r--third_party/git/trace2/tr2_tbuf.h24
-rw-r--r--third_party/git/trace2/tr2_tgt.h134
-rw-r--r--third_party/git/trace2/tr2_tgt_event.c591
-rw-r--r--third_party/git/trace2/tr2_tgt_normal.c324
-rw-r--r--third_party/git/trace2/tr2_tgt_perf.c535
-rw-r--r--third_party/git/trace2/tr2_tls.c180
-rw-r--r--third_party/git/trace2/tr2_tls.h103
18 files changed, 0 insertions, 2737 deletions
diff --git a/third_party/git/trace2/tr2_cfg.c b/third_party/git/trace2/tr2_cfg.c
deleted file mode 100644
index caa7f06948..0000000000
--- a/third_party/git/trace2/tr2_cfg.c
+++ /dev/null
@@ -1,89 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "trace2/tr2_cfg.h"
-#include "trace2/tr2_sysenv.h"
-
-static struct strbuf **tr2_cfg_patterns;
-static int tr2_cfg_count_patterns;
-static int tr2_cfg_loaded;
-
-/*
- * Parse a string containing a comma-delimited list of config keys
- * or wildcard patterns into a list of strbufs.
- */
-static int tr2_cfg_load_patterns(void)
-{
-	struct strbuf **s;
-	const char *envvar;
-
-	if (tr2_cfg_loaded)
-		return tr2_cfg_count_patterns;
-	tr2_cfg_loaded = 1;
-
-	envvar = tr2_sysenv_get(TR2_SYSENV_CFG_PARAM);
-	if (!envvar || !*envvar)
-		return tr2_cfg_count_patterns;
-
-	tr2_cfg_patterns = strbuf_split_buf(envvar, strlen(envvar), ',', -1);
-	for (s = tr2_cfg_patterns; *s; s++) {
-		struct strbuf *buf = *s;
-
-		if (buf->len && buf->buf[buf->len - 1] == ',')
-			strbuf_setlen(buf, buf->len - 1);
-		strbuf_trim_trailing_newline(*s);
-		strbuf_trim(*s);
-	}
-
-	tr2_cfg_count_patterns = s - tr2_cfg_patterns;
-	return tr2_cfg_count_patterns;
-}
-
-void tr2_cfg_free_patterns(void)
-{
-	if (tr2_cfg_patterns)
-		strbuf_list_free(tr2_cfg_patterns);
-	tr2_cfg_count_patterns = 0;
-	tr2_cfg_loaded = 0;
-}
-
-struct tr2_cfg_data {
-	const char *file;
-	int line;
-};
-
-/*
- * See if the given config key matches any of our patterns of interest.
- */
-static int tr2_cfg_cb(const char *key, const char *value, void *d)
-{
-	struct strbuf **s;
-	struct tr2_cfg_data *data = (struct tr2_cfg_data *)d;
-
-	for (s = tr2_cfg_patterns; *s; s++) {
-		struct strbuf *buf = *s;
-		int wm = wildmatch(buf->buf, key, WM_CASEFOLD);
-		if (wm == WM_MATCH) {
-			trace2_def_param_fl(data->file, data->line, key, value);
-			return 0;
-		}
-	}
-
-	return 0;
-}
-
-void tr2_cfg_list_config_fl(const char *file, int line)
-{
-	struct tr2_cfg_data data = { file, line };
-
-	if (tr2_cfg_load_patterns() > 0)
-		read_early_config(tr2_cfg_cb, &data);
-}
-
-void tr2_cfg_set_fl(const char *file, int line, const char *key,
-		    const char *value)
-{
-	struct tr2_cfg_data data = { file, line };
-
-	if (tr2_cfg_load_patterns() > 0)
-		tr2_cfg_cb(key, value, &data);
-}
diff --git a/third_party/git/trace2/tr2_cfg.h b/third_party/git/trace2/tr2_cfg.h
deleted file mode 100644
index d9c98f64dd..0000000000
--- a/third_party/git/trace2/tr2_cfg.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef TR2_CFG_H
-#define TR2_CFG_H
-
-/*
- * Iterate over all config settings and emit 'def_param' events for the
- * "interesting" ones to TRACE2.
- */
-void tr2_cfg_list_config_fl(const char *file, int line);
-
-/*
- * Emit a "def_param" event for the given key/value pair IF we consider
- * the key to be "interesting".
- */
-void tr2_cfg_set_fl(const char *file, int line, const char *key,
-		    const char *value);
-
-void tr2_cfg_free_patterns(void);
-
-#endif /* TR2_CFG_H */
diff --git a/third_party/git/trace2/tr2_cmd_name.c b/third_party/git/trace2/tr2_cmd_name.c
deleted file mode 100644
index dd313204f5..0000000000
--- a/third_party/git/trace2/tr2_cmd_name.c
+++ /dev/null
@@ -1,30 +0,0 @@
-#include "cache.h"
-#include "trace2/tr2_cmd_name.h"
-
-#define TR2_ENVVAR_PARENT_NAME "GIT_TRACE2_PARENT_NAME"
-
-static struct strbuf tr2cmdname_hierarchy = STRBUF_INIT;
-
-void tr2_cmd_name_append_hierarchy(const char *name)
-{
-	const char *parent_name = getenv(TR2_ENVVAR_PARENT_NAME);
-
-	strbuf_reset(&tr2cmdname_hierarchy);
-	if (parent_name && *parent_name) {
-		strbuf_addstr(&tr2cmdname_hierarchy, parent_name);
-		strbuf_addch(&tr2cmdname_hierarchy, '/');
-	}
-	strbuf_addstr(&tr2cmdname_hierarchy, name);
-
-	setenv(TR2_ENVVAR_PARENT_NAME, tr2cmdname_hierarchy.buf, 1);
-}
-
-const char *tr2_cmd_name_get_hierarchy(void)
-{
-	return tr2cmdname_hierarchy.buf;
-}
-
-void tr2_cmd_name_release(void)
-{
-	strbuf_release(&tr2cmdname_hierarchy);
-}
diff --git a/third_party/git/trace2/tr2_cmd_name.h b/third_party/git/trace2/tr2_cmd_name.h
deleted file mode 100644
index ab70b67a8e..0000000000
--- a/third_party/git/trace2/tr2_cmd_name.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef TR2_CMD_NAME_H
-#define TR2_CMD_NAME_H
-
-/*
- * Append the current command name to the list being maintained
- * in the environment.
- *
- * The hierarchy for a top-level git command is just the current
- * command name.  For a child git process, the hierarchy includes the
- * names of the parent processes.
- *
- * The hierarchy for the current process will be exported to the
- * environment and inherited by child processes.
- */
-void tr2_cmd_name_append_hierarchy(const char *name);
-
-/*
- * Get the command name hierarchy for the current process.
- */
-const char *tr2_cmd_name_get_hierarchy(void);
-
-void tr2_cmd_name_release(void);
-
-#endif /* TR2_CMD_NAME_H */
diff --git a/third_party/git/trace2/tr2_dst.c b/third_party/git/trace2/tr2_dst.c
deleted file mode 100644
index 5dda0ca1cd..0000000000
--- a/third_party/git/trace2/tr2_dst.c
+++ /dev/null
@@ -1,307 +0,0 @@
-#include "cache.h"
-#include "trace2/tr2_dst.h"
-#include "trace2/tr2_sid.h"
-#include "trace2/tr2_sysenv.h"
-
-/*
- * How many attempts we will make at creating an automatically-named trace file.
- */
-#define MAX_AUTO_ATTEMPTS 10
-
-static int tr2_dst_want_warning(void)
-{
-	static int tr2env_dst_debug = -1;
-
-	if (tr2env_dst_debug == -1) {
-		const char *env_value = tr2_sysenv_get(TR2_SYSENV_DST_DEBUG);
-		if (!env_value || !*env_value)
-			tr2env_dst_debug = 0;
-		else
-			tr2env_dst_debug = atoi(env_value) > 0;
-	}
-
-	return tr2env_dst_debug;
-}
-
-void tr2_dst_trace_disable(struct tr2_dst *dst)
-{
-	if (dst->need_close)
-		close(dst->fd);
-	dst->fd = 0;
-	dst->initialized = 1;
-	dst->need_close = 0;
-}
-
-static int tr2_dst_try_auto_path(struct tr2_dst *dst, const char *tgt_prefix)
-{
-	int fd;
-	const char *last_slash, *sid = tr2_sid_get();
-	struct strbuf path = STRBUF_INIT;
-	size_t base_path_len;
-	unsigned attempt_count;
-
-	last_slash = strrchr(sid, '/');
-	if (last_slash)
-		sid = last_slash + 1;
-
-	strbuf_addstr(&path, tgt_prefix);
-	if (!is_dir_sep(path.buf[path.len - 1]))
-		strbuf_addch(&path, '/');
-	strbuf_addstr(&path, sid);
-	base_path_len = path.len;
-
-	for (attempt_count = 0; attempt_count < MAX_AUTO_ATTEMPTS; attempt_count++) {
-		if (attempt_count > 0) {
-			strbuf_setlen(&path, base_path_len);
-			strbuf_addf(&path, ".%d", attempt_count);
-		}
-
-		fd = open(path.buf, O_WRONLY | O_CREAT | O_EXCL, 0666);
-		if (fd != -1)
-			break;
-	}
-
-	if (fd == -1) {
-		if (tr2_dst_want_warning())
-			warning("trace2: could not open '%.*s' for '%s' tracing: %s",
-				(int) base_path_len, path.buf,
-				tr2_sysenv_display_name(dst->sysenv_var),
-				strerror(errno));
-
-		tr2_dst_trace_disable(dst);
-		strbuf_release(&path);
-		return 0;
-	}
-
-	strbuf_release(&path);
-
-	dst->fd = fd;
-	dst->need_close = 1;
-	dst->initialized = 1;
-
-	return dst->fd;
-}
-
-static int tr2_dst_try_path(struct tr2_dst *dst, const char *tgt_value)
-{
-	int fd = open(tgt_value, O_WRONLY | O_APPEND | O_CREAT, 0666);
-	if (fd == -1) {
-		if (tr2_dst_want_warning())
-			warning("trace2: could not open '%s' for '%s' tracing: %s",
-				tgt_value,
-				tr2_sysenv_display_name(dst->sysenv_var),
-				strerror(errno));
-
-		tr2_dst_trace_disable(dst);
-		return 0;
-	}
-
-	dst->fd = fd;
-	dst->need_close = 1;
-	dst->initialized = 1;
-
-	return dst->fd;
-}
-
-#ifndef NO_UNIX_SOCKETS
-#define PREFIX_AF_UNIX "af_unix:"
-#define PREFIX_AF_UNIX_STREAM "af_unix:stream:"
-#define PREFIX_AF_UNIX_DGRAM "af_unix:dgram:"
-
-static int tr2_dst_try_uds_connect(const char *path, int sock_type, int *out_fd)
-{
-	int fd;
-	struct sockaddr_un sa;
-
-	fd = socket(AF_UNIX, sock_type, 0);
-	if (fd == -1)
-		return errno;
-
-	sa.sun_family = AF_UNIX;
-	strlcpy(sa.sun_path, path, sizeof(sa.sun_path));
-
-	if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
-		int e = errno;
-		close(fd);
-		return e;
-	}
-
-	*out_fd = fd;
-	return 0;
-}
-
-#define TR2_DST_UDS_TRY_STREAM (1 << 0)
-#define TR2_DST_UDS_TRY_DGRAM  (1 << 1)
-
-static int tr2_dst_try_unix_domain_socket(struct tr2_dst *dst,
-					  const char *tgt_value)
-{
-	unsigned int uds_try = 0;
-	int fd;
-	int e;
-	const char *path = NULL;
-
-	/*
-	 * Allow "af_unix:[<type>:]<absolute_path>"
-	 *
-	 * Trace2 always writes complete individual messages (without
-	 * chunking), so we can talk to either DGRAM or STREAM type sockets.
-	 *
-	 * Allow the user to explicitly request the socket type.
-	 *
-	 * If they omit the socket type, try one and then the other.
-	 */
-
-	if (skip_prefix(tgt_value, PREFIX_AF_UNIX_STREAM, &path))
-		uds_try |= TR2_DST_UDS_TRY_STREAM;
-
-	else if (skip_prefix(tgt_value, PREFIX_AF_UNIX_DGRAM, &path))
-		uds_try |= TR2_DST_UDS_TRY_DGRAM;
-
-	else if (skip_prefix(tgt_value, PREFIX_AF_UNIX, &path))
-		uds_try |= TR2_DST_UDS_TRY_STREAM | TR2_DST_UDS_TRY_DGRAM;
-
-	if (!path || !*path) {
-		if (tr2_dst_want_warning())
-			warning("trace2: invalid AF_UNIX value '%s' for '%s' tracing",
-				tgt_value,
-				tr2_sysenv_display_name(dst->sysenv_var));
-
-		tr2_dst_trace_disable(dst);
-		return 0;
-	}
-
-	if (!is_absolute_path(path) ||
-	    strlen(path) >= sizeof(((struct sockaddr_un *)0)->sun_path)) {
-		if (tr2_dst_want_warning())
-			warning("trace2: invalid AF_UNIX path '%s' for '%s' tracing",
-				path, tr2_sysenv_display_name(dst->sysenv_var));
-
-		tr2_dst_trace_disable(dst);
-		return 0;
-	}
-
-	if (uds_try & TR2_DST_UDS_TRY_STREAM) {
-		e = tr2_dst_try_uds_connect(path, SOCK_STREAM, &fd);
-		if (!e)
-			goto connected;
-		if (e != EPROTOTYPE)
-			goto error;
-	}
-	if (uds_try & TR2_DST_UDS_TRY_DGRAM) {
-		e = tr2_dst_try_uds_connect(path, SOCK_DGRAM, &fd);
-		if (!e)
-			goto connected;
-	}
-
-error:
-	if (tr2_dst_want_warning())
-		warning("trace2: could not connect to socket '%s' for '%s' tracing: %s",
-			path, tr2_sysenv_display_name(dst->sysenv_var),
-			strerror(e));
-
-	tr2_dst_trace_disable(dst);
-	return 0;
-
-connected:
-	dst->fd = fd;
-	dst->need_close = 1;
-	dst->initialized = 1;
-
-	return dst->fd;
-}
-#endif
-
-static void tr2_dst_malformed_warning(struct tr2_dst *dst,
-				      const char *tgt_value)
-{
-	struct strbuf buf = STRBUF_INIT;
-
-	strbuf_addf(&buf, "trace2: unknown value for '%s': '%s'",
-		    tr2_sysenv_display_name(dst->sysenv_var), tgt_value);
-	warning("%s", buf.buf);
-
-	strbuf_release(&buf);
-}
-
-int tr2_dst_get_trace_fd(struct tr2_dst *dst)
-{
-	const char *tgt_value;
-
-	/* don't open twice */
-	if (dst->initialized)
-		return dst->fd;
-
-	dst->initialized = 1;
-
-	tgt_value = tr2_sysenv_get(dst->sysenv_var);
-
-	if (!tgt_value || !strcmp(tgt_value, "") || !strcmp(tgt_value, "0") ||
-	    !strcasecmp(tgt_value, "false")) {
-		dst->fd = 0;
-		return dst->fd;
-	}
-
-	if (!strcmp(tgt_value, "1") || !strcasecmp(tgt_value, "true")) {
-		dst->fd = STDERR_FILENO;
-		return dst->fd;
-	}
-
-	if (strlen(tgt_value) == 1 && isdigit(*tgt_value)) {
-		dst->fd = atoi(tgt_value);
-		return dst->fd;
-	}
-
-	if (is_absolute_path(tgt_value)) {
-		if (is_directory(tgt_value))
-			return tr2_dst_try_auto_path(dst, tgt_value);
-		else
-			return tr2_dst_try_path(dst, tgt_value);
-	}
-
-#ifndef NO_UNIX_SOCKETS
-	if (starts_with(tgt_value, PREFIX_AF_UNIX))
-		return tr2_dst_try_unix_domain_socket(dst, tgt_value);
-#endif
-
-	/* Always warn about malformed values. */
-	tr2_dst_malformed_warning(dst, tgt_value);
-	tr2_dst_trace_disable(dst);
-	return 0;
-}
-
-int tr2_dst_trace_want(struct tr2_dst *dst)
-{
-	return !!tr2_dst_get_trace_fd(dst);
-}
-
-void tr2_dst_write_line(struct tr2_dst *dst, struct strbuf *buf_line)
-{
-	int fd = tr2_dst_get_trace_fd(dst);
-
-	strbuf_complete_line(buf_line); /* ensure final NL on buffer */
-
-	/*
-	 * We do not use write_in_full() because we do not want
-	 * a short-write to try again.  We are using O_APPEND mode
-	 * files and the kernel handles the atomic seek+write. If
-	 * another thread or git process is concurrently writing to
-	 * this fd or file, our remainder-write may not be contiguous
-	 * with our initial write of this message.  And that will
-	 * confuse readers.  So just don't bother.
-	 *
-	 * It is assumed that TRACE2 messages are short enough that
-	 * the system can write them in 1 attempt and we won't see
-	 * a short-write.
-	 *
-	 * If we get an IO error, just close the trace dst.
-	 */
-	if (write(fd, buf_line->buf, buf_line->len) >= 0)
-		return;
-
-	if (tr2_dst_want_warning())
-		warning("unable to write trace to '%s': %s",
-			tr2_sysenv_display_name(dst->sysenv_var),
-			strerror(errno));
-	tr2_dst_trace_disable(dst);
-}
diff --git a/third_party/git/trace2/tr2_dst.h b/third_party/git/trace2/tr2_dst.h
deleted file mode 100644
index 3adf3bac13..0000000000
--- a/third_party/git/trace2/tr2_dst.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef TR2_DST_H
-#define TR2_DST_H
-
-struct strbuf;
-#include "trace2/tr2_sysenv.h"
-
-struct tr2_dst {
-	enum tr2_sysenv_variable sysenv_var;
-	int fd;
-	unsigned int initialized : 1;
-	unsigned int need_close : 1;
-};
-
-/*
- * Disable TRACE2 on the destination.  In TRACE2 a destination (DST)
- * wraps a file descriptor; it is associated with a TARGET which
- * defines the formatting.
- */
-void tr2_dst_trace_disable(struct tr2_dst *dst);
-
-/*
- * Return the file descriptor for the DST.
- * If 0, the dst is closed or disabled.
- */
-int tr2_dst_get_trace_fd(struct tr2_dst *dst);
-
-/*
- * Return true if the DST is opened for writing.
- */
-int tr2_dst_trace_want(struct tr2_dst *dst);
-
-/*
- * Write a single line/message to the trace file.
- */
-void tr2_dst_write_line(struct tr2_dst *dst, struct strbuf *buf_line);
-
-#endif /* TR2_DST_H */
diff --git a/third_party/git/trace2/tr2_sid.c b/third_party/git/trace2/tr2_sid.c
deleted file mode 100644
index 6948fd4108..0000000000
--- a/third_party/git/trace2/tr2_sid.c
+++ /dev/null
@@ -1,112 +0,0 @@
-#include "cache.h"
-#include "trace2/tr2_tbuf.h"
-#include "trace2/tr2_sid.h"
-
-#define TR2_ENVVAR_PARENT_SID "GIT_TRACE2_PARENT_SID"
-
-static struct strbuf tr2sid_buf = STRBUF_INIT;
-static int tr2sid_nr_git_parents;
-
-/*
- * Compute the final component of the SID representing the current process.
- * This should uniquely identify the process and be a valid filename (to
- * allow writing trace2 data to per-process files).  It should also be fixed
- * length for possible use as a database key.
- *
- * "<yyyymmdd>T<hhmmss>.<fraction>Z-<host>-<process>"
- *
- * where <host> is a 9 character string:
- *    "H<first_8_chars_of_sha1_of_hostname>"
- *    "Localhost" when no hostname.
- *
- * where <process> is a 9 character string containing the least signifcant
- * 32 bits in the process-id.
- *    "P<pid>"
- * (This is an abribrary choice.  On most systems pid_t is a 32 bit value,
- * so limit doesn't matter.  On larger systems, a truncated value is fine
- * for our purposes here.)
- */
-static void tr2_sid_append_my_sid_component(void)
-{
-	const struct git_hash_algo *algo = &hash_algos[GIT_HASH_SHA1];
-	struct tr2_tbuf tb_now;
-	git_hash_ctx ctx;
-	pid_t pid = getpid();
-	unsigned char hash[GIT_MAX_RAWSZ + 1];
-	char hex[GIT_MAX_HEXSZ + 1];
-	char hostname[HOST_NAME_MAX + 1];
-
-	tr2_tbuf_utc_datetime(&tb_now);
-	strbuf_addstr(&tr2sid_buf, tb_now.buf);
-
-	strbuf_addch(&tr2sid_buf, '-');
-	if (xgethostname(hostname, sizeof(hostname)))
-		strbuf_add(&tr2sid_buf, "Localhost", 9);
-	else {
-		algo->init_fn(&ctx);
-		algo->update_fn(&ctx, hostname, strlen(hostname));
-		algo->final_fn(hash, &ctx);
-		hash_to_hex_algop_r(hex, hash, algo);
-		strbuf_addch(&tr2sid_buf, 'H');
-		strbuf_add(&tr2sid_buf, hex, 8);
-	}
-
-	strbuf_addf(&tr2sid_buf, "-P%08"PRIx32, (uint32_t)pid);
-}
-
-/*
- * Compute a "unique" session id (SID) for the current process.  This allows
- * all events from this process to have a single label (much like a PID).
- *
- * Export this into our environment so that all child processes inherit it.
- *
- * If we were started by another git instance, use our parent's SID as a
- * prefix.  (This lets us track parent/child relationships even if there
- * is an intermediate shell process.)
- *
- * Additionally, count the number of nested git processes.
- */
-static void tr2_sid_compute(void)
-{
-	const char *parent_sid;
-
-	if (tr2sid_buf.len)
-		return;
-
-	parent_sid = getenv(TR2_ENVVAR_PARENT_SID);
-	if (parent_sid && *parent_sid) {
-		const char *p;
-		for (p = parent_sid; *p; p++)
-			if (*p == '/')
-				tr2sid_nr_git_parents++;
-
-		strbuf_addstr(&tr2sid_buf, parent_sid);
-		strbuf_addch(&tr2sid_buf, '/');
-		tr2sid_nr_git_parents++;
-	}
-
-	tr2_sid_append_my_sid_component();
-
-	setenv(TR2_ENVVAR_PARENT_SID, tr2sid_buf.buf, 1);
-}
-
-const char *tr2_sid_get(void)
-{
-	if (!tr2sid_buf.len)
-		tr2_sid_compute();
-
-	return tr2sid_buf.buf;
-}
-
-int tr2_sid_depth(void)
-{
-	if (!tr2sid_buf.len)
-		tr2_sid_compute();
-
-	return tr2sid_nr_git_parents;
-}
-
-void tr2_sid_release(void)
-{
-	strbuf_release(&tr2sid_buf);
-}
diff --git a/third_party/git/trace2/tr2_sid.h b/third_party/git/trace2/tr2_sid.h
deleted file mode 100644
index 9bef321708..0000000000
--- a/third_party/git/trace2/tr2_sid.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef TR2_SID_H
-#define TR2_SID_H
-
-/*
- * Get our session id. Compute if necessary.
- */
-const char *tr2_sid_get(void);
-
-/*
- * Get our process depth.  A top-level git process invoked from the
- * command line will have depth=0.  A child git process will have
- * depth=1 and so on.
- */
-int tr2_sid_depth(void);
-
-void tr2_sid_release(void);
-
-#endif /* TR2_SID_H */
diff --git a/third_party/git/trace2/tr2_sysenv.c b/third_party/git/trace2/tr2_sysenv.c
deleted file mode 100644
index 5958cfc424..0000000000
--- a/third_party/git/trace2/tr2_sysenv.c
+++ /dev/null
@@ -1,127 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "dir.h"
-#include "tr2_sysenv.h"
-
-/*
- * Each entry represents a trace2 setting.
- * See Documentation/technical/api-trace2.txt
- */
-struct tr2_sysenv_entry {
-	const char *env_var_name;
-	const char *git_config_name;
-
-	char *value;
-	unsigned int getenv_called : 1;
-};
-
-/*
- * This table must match "enum tr2_sysenv_variable" in tr2_sysenv.h.
- *
- * The strings in this table are constant and must match the published
- * config and environment variable names as described in the documentation.
- *
- * We do not define entries for the GIT_TRACE2_PARENT_* environment
- * variables because they are transient and used to pass information
- * from parent to child git processes, rather than settings.
- */
-/* clang-format off */
-static struct tr2_sysenv_entry tr2_sysenv_settings[] = {
-	[TR2_SYSENV_CFG_PARAM]     = { "GIT_TRACE2_CONFIG_PARAMS",
-				       "trace2.configparams" },
-
-	[TR2_SYSENV_DST_DEBUG]     = { "GIT_TRACE2_DST_DEBUG",
-				       "trace2.destinationdebug" },
-
-	[TR2_SYSENV_NORMAL]        = { "GIT_TRACE2",
-				       "trace2.normaltarget" },
-	[TR2_SYSENV_NORMAL_BRIEF]  = { "GIT_TRACE2_BRIEF",
-				       "trace2.normalbrief" },
-
-	[TR2_SYSENV_EVENT]         = { "GIT_TRACE2_EVENT",
-				       "trace2.eventtarget" },
-	[TR2_SYSENV_EVENT_BRIEF]   = { "GIT_TRACE2_EVENT_BRIEF",
-				       "trace2.eventbrief" },
-	[TR2_SYSENV_EVENT_NESTING] = { "GIT_TRACE2_EVENT_NESTING",
-				       "trace2.eventnesting" },
-
-	[TR2_SYSENV_PERF]          = { "GIT_TRACE2_PERF",
-				       "trace2.perftarget" },
-	[TR2_SYSENV_PERF_BRIEF]    = { "GIT_TRACE2_PERF_BRIEF",
-				       "trace2.perfbrief" },
-};
-/* clang-format on */
-
-static int tr2_sysenv_cb(const char *key, const char *value, void *d)
-{
-	int k;
-
-	if (!starts_with(key, "trace2."))
-		return 0;
-
-	for (k = 0; k < ARRAY_SIZE(tr2_sysenv_settings); k++) {
-		if (!strcmp(key, tr2_sysenv_settings[k].git_config_name)) {
-			free(tr2_sysenv_settings[k].value);
-			tr2_sysenv_settings[k].value = xstrdup(value);
-			return 0;
-		}
-	}
-
-	return 0;
-}
-
-/*
- * Load Trace2 settings from the system config (usually "/etc/gitconfig"
- * unless we were built with a runtime-prefix).  These are intended to
- * define the default values for Trace2 as requested by the administrator.
- *
- * Then override with the Trace2 settings from the global config.
- */
-void tr2_sysenv_load(void)
-{
-	if (ARRAY_SIZE(tr2_sysenv_settings) != TR2_SYSENV_MUST_BE_LAST)
-		BUG("tr2_sysenv_settings size is wrong");
-
-	read_very_early_config(tr2_sysenv_cb, NULL);
-}
-
-/*
- * Return the value for the requested Trace2 setting from these sources:
- * the system config, the global config, and the environment.
- */
-const char *tr2_sysenv_get(enum tr2_sysenv_variable var)
-{
-	if (var >= TR2_SYSENV_MUST_BE_LAST)
-		BUG("tr2_sysenv_get invalid var '%d'", var);
-
-	if (!tr2_sysenv_settings[var].getenv_called) {
-		const char *v = getenv(tr2_sysenv_settings[var].env_var_name);
-		if (v && *v) {
-			free(tr2_sysenv_settings[var].value);
-			tr2_sysenv_settings[var].value = xstrdup(v);
-		}
-		tr2_sysenv_settings[var].getenv_called = 1;
-	}
-
-	return tr2_sysenv_settings[var].value;
-}
-
-/*
- * Return a friendly name for this setting that is suitable for printing
- * in an error messages.
- */
-const char *tr2_sysenv_display_name(enum tr2_sysenv_variable var)
-{
-	if (var >= TR2_SYSENV_MUST_BE_LAST)
-		BUG("tr2_sysenv_get invalid var '%d'", var);
-
-	return tr2_sysenv_settings[var].env_var_name;
-}
-
-void tr2_sysenv_release(void)
-{
-	int k;
-
-	for (k = 0; k < ARRAY_SIZE(tr2_sysenv_settings); k++)
-		free(tr2_sysenv_settings[k].value);
-}
diff --git a/third_party/git/trace2/tr2_sysenv.h b/third_party/git/trace2/tr2_sysenv.h
deleted file mode 100644
index 8dd82a7a56..0000000000
--- a/third_party/git/trace2/tr2_sysenv.h
+++ /dev/null
@@ -1,36 +0,0 @@
-#ifndef TR2_SYSENV_H
-#define TR2_SYSENV_H
-
-/*
- * The Trace2 settings that can be loaded from /etc/gitconfig
- * and/or user environment variables.
- *
- * Note that this set does not contain any of the transient
- * environment variables used to pass information from parent
- * to child git processes, such "GIT_TRACE2_PARENT_SID".
- */
-enum tr2_sysenv_variable {
-	TR2_SYSENV_CFG_PARAM = 0,
-
-	TR2_SYSENV_DST_DEBUG,
-
-	TR2_SYSENV_NORMAL,
-	TR2_SYSENV_NORMAL_BRIEF,
-
-	TR2_SYSENV_EVENT,
-	TR2_SYSENV_EVENT_BRIEF,
-	TR2_SYSENV_EVENT_NESTING,
-
-	TR2_SYSENV_PERF,
-	TR2_SYSENV_PERF_BRIEF,
-
-	TR2_SYSENV_MUST_BE_LAST
-};
-
-void tr2_sysenv_load(void);
-
-const char *tr2_sysenv_get(enum tr2_sysenv_variable);
-const char *tr2_sysenv_display_name(enum tr2_sysenv_variable var);
-void tr2_sysenv_release(void);
-
-#endif /* TR2_SYSENV_H */
diff --git a/third_party/git/trace2/tr2_tbuf.c b/third_party/git/trace2/tr2_tbuf.c
deleted file mode 100644
index 2498482d9a..0000000000
--- a/third_party/git/trace2/tr2_tbuf.c
+++ /dev/null
@@ -1,47 +0,0 @@
-#include "cache.h"
-#include "tr2_tbuf.h"
-
-void tr2_tbuf_local_time(struct tr2_tbuf *tb)
-{
-	struct timeval tv;
-	struct tm tm;
-	time_t secs;
-
-	gettimeofday(&tv, NULL);
-	secs = tv.tv_sec;
-	localtime_r(&secs, &tm);
-
-	xsnprintf(tb->buf, sizeof(tb->buf), "%02d:%02d:%02d.%06ld", tm.tm_hour,
-		  tm.tm_min, tm.tm_sec, (long)tv.tv_usec);
-}
-
-void tr2_tbuf_utc_datetime_extended(struct tr2_tbuf *tb)
-{
-	struct timeval tv;
-	struct tm tm;
-	time_t secs;
-
-	gettimeofday(&tv, NULL);
-	secs = tv.tv_sec;
-	gmtime_r(&secs, &tm);
-
-	xsnprintf(tb->buf, sizeof(tb->buf),
-		  "%4d-%02d-%02dT%02d:%02d:%02d.%06ldZ", tm.tm_year + 1900,
-		  tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec,
-		  (long)tv.tv_usec);
-}
-
-void tr2_tbuf_utc_datetime(struct tr2_tbuf *tb)
-{
-	struct timeval tv;
-	struct tm tm;
-	time_t secs;
-
-	gettimeofday(&tv, NULL);
-	secs = tv.tv_sec;
-	gmtime_r(&secs, &tm);
-
-	xsnprintf(tb->buf, sizeof(tb->buf), "%4d%02d%02dT%02d%02d%02d.%06ldZ",
-		  tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour,
-		  tm.tm_min, tm.tm_sec, (long)tv.tv_usec);
-}
diff --git a/third_party/git/trace2/tr2_tbuf.h b/third_party/git/trace2/tr2_tbuf.h
deleted file mode 100644
index fa853d8f42..0000000000
--- a/third_party/git/trace2/tr2_tbuf.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef TR2_TBUF_H
-#define TR2_TBUF_H
-
-/*
- * A simple wrapper around a fixed buffer to avoid C syntax
- * quirks and the need to pass around an additional size_t
- * argument.
- */
-struct tr2_tbuf {
-	char buf[32];
-};
-
-/*
- * Fill buffer with formatted local time string.
- */
-void tr2_tbuf_local_time(struct tr2_tbuf *tb);
-
-/*
- * Fill buffer with formatted UTC datatime string.
- */
-void tr2_tbuf_utc_datetime_extended(struct tr2_tbuf *tb);
-void tr2_tbuf_utc_datetime(struct tr2_tbuf *tb);
-
-#endif /* TR2_TBUF_H */
diff --git a/third_party/git/trace2/tr2_tgt.h b/third_party/git/trace2/tr2_tgt.h
deleted file mode 100644
index 7b90469212..0000000000
--- a/third_party/git/trace2/tr2_tgt.h
+++ /dev/null
@@ -1,134 +0,0 @@
-#ifndef TR2_TGT_H
-#define TR2_TGT_H
-
-struct child_process;
-struct repository;
-struct json_writer;
-
-/*
- * Function prototypes for a TRACE2 "target" vtable.
- */
-
-typedef int(tr2_tgt_init_t)(void);
-typedef void(tr2_tgt_term_t)(void);
-
-typedef void(tr2_tgt_evt_version_fl_t)(const char *file, int line);
-
-typedef void(tr2_tgt_evt_start_fl_t)(const char *file, int line,
-				     uint64_t us_elapsed_absolute,
-				     const char **argv);
-typedef void(tr2_tgt_evt_exit_fl_t)(const char *file, int line,
-				    uint64_t us_elapsed_absolute, int code);
-typedef void(tr2_tgt_evt_signal_t)(uint64_t us_elapsed_absolute, int signo);
-typedef void(tr2_tgt_evt_atexit_t)(uint64_t us_elapsed_absolute, int code);
-
-typedef void(tr2_tgt_evt_error_va_fl_t)(const char *file, int line,
-					const char *fmt, va_list ap);
-
-typedef void(tr2_tgt_evt_command_path_fl_t)(const char *file, int line,
-					    const char *command_path);
-typedef void(tr2_tgt_evt_command_name_fl_t)(const char *file, int line,
-					    const char *name,
-					    const char *hierarchy);
-typedef void(tr2_tgt_evt_command_mode_fl_t)(const char *file, int line,
-					    const char *mode);
-
-typedef void(tr2_tgt_evt_alias_fl_t)(const char *file, int line,
-				     const char *alias, const char **argv);
-
-typedef void(tr2_tgt_evt_child_start_fl_t)(const char *file, int line,
-					   uint64_t us_elapsed_absolute,
-					   const struct child_process *cmd);
-typedef void(tr2_tgt_evt_child_exit_fl_t)(const char *file, int line,
-					  uint64_t us_elapsed_absolute, int cid,
-					  int pid, int code,
-					  uint64_t us_elapsed_child);
-
-typedef void(tr2_tgt_evt_thread_start_fl_t)(const char *file, int line,
-					    uint64_t us_elapsed_absolute);
-typedef void(tr2_tgt_evt_thread_exit_fl_t)(const char *file, int line,
-					   uint64_t us_elapsed_absolute,
-					   uint64_t us_elapsed_thread);
-
-typedef void(tr2_tgt_evt_exec_fl_t)(const char *file, int line,
-				    uint64_t us_elapsed_absolute, int exec_id,
-				    const char *exe, const char **argv);
-typedef void(tr2_tgt_evt_exec_result_fl_t)(const char *file, int line,
-					   uint64_t us_elapsed_absolute,
-					   int exec_id, int code);
-
-typedef void(tr2_tgt_evt_param_fl_t)(const char *file, int line,
-				     const char *param, const char *value);
-
-typedef void(tr2_tgt_evt_repo_fl_t)(const char *file, int line,
-				    const struct repository *repo);
-
-typedef void(tr2_tgt_evt_region_enter_printf_va_fl_t)(
-	const char *file, int line, uint64_t us_elapsed_absolute,
-	const char *category, const char *label, const struct repository *repo,
-	const char *fmt, va_list ap);
-typedef void(tr2_tgt_evt_region_leave_printf_va_fl_t)(
-	const char *file, int line, uint64_t us_elapsed_absolute,
-	uint64_t us_elapsed_region, const char *category, const char *label,
-	const struct repository *repo, const char *fmt, va_list ap);
-
-typedef void(tr2_tgt_evt_data_fl_t)(const char *file, int line,
-				    uint64_t us_elapsed_absolute,
-				    uint64_t us_elapsed_region,
-				    const char *category,
-				    const struct repository *repo,
-				    const char *key, const char *value);
-typedef void(tr2_tgt_evt_data_json_fl_t)(const char *file, int line,
-					 uint64_t us_elapsed_absolute,
-					 uint64_t us_elapsed_region,
-					 const char *category,
-					 const struct repository *repo,
-					 const char *key,
-					 const struct json_writer *value);
-
-typedef void(tr2_tgt_evt_printf_va_fl_t)(const char *file, int line,
-					 uint64_t us_elapsed_absolute,
-					 const char *fmt, va_list ap);
-
-/*
- * "vtable" for a TRACE2 target.  Use NULL if a target does not want
- * to emit that message.
- */
-/* clang-format off */
-struct tr2_tgt {
-	struct tr2_dst                          *pdst;
-
-	tr2_tgt_init_t                          *pfn_init;
-	tr2_tgt_term_t                          *pfn_term;
-
-	tr2_tgt_evt_version_fl_t                *pfn_version_fl;
-	tr2_tgt_evt_start_fl_t                  *pfn_start_fl;
-	tr2_tgt_evt_exit_fl_t                   *pfn_exit_fl;
-	tr2_tgt_evt_signal_t                    *pfn_signal;
-	tr2_tgt_evt_atexit_t                    *pfn_atexit;
-	tr2_tgt_evt_error_va_fl_t               *pfn_error_va_fl;
-	tr2_tgt_evt_command_path_fl_t           *pfn_command_path_fl;
-	tr2_tgt_evt_command_name_fl_t           *pfn_command_name_fl;
-	tr2_tgt_evt_command_mode_fl_t           *pfn_command_mode_fl;
-	tr2_tgt_evt_alias_fl_t                  *pfn_alias_fl;
-	tr2_tgt_evt_child_start_fl_t            *pfn_child_start_fl;
-	tr2_tgt_evt_child_exit_fl_t             *pfn_child_exit_fl;
-	tr2_tgt_evt_thread_start_fl_t           *pfn_thread_start_fl;
-	tr2_tgt_evt_thread_exit_fl_t            *pfn_thread_exit_fl;
-	tr2_tgt_evt_exec_fl_t                   *pfn_exec_fl;
-	tr2_tgt_evt_exec_result_fl_t            *pfn_exec_result_fl;
-	tr2_tgt_evt_param_fl_t                  *pfn_param_fl;
-	tr2_tgt_evt_repo_fl_t                   *pfn_repo_fl;
-	tr2_tgt_evt_region_enter_printf_va_fl_t *pfn_region_enter_printf_va_fl;
-	tr2_tgt_evt_region_leave_printf_va_fl_t *pfn_region_leave_printf_va_fl;
-	tr2_tgt_evt_data_fl_t                   *pfn_data_fl;
-	tr2_tgt_evt_data_json_fl_t              *pfn_data_json_fl;
-	tr2_tgt_evt_printf_va_fl_t              *pfn_printf_va_fl;
-};
-/* clang-format on */
-
-extern struct tr2_tgt tr2_tgt_event;
-extern struct tr2_tgt tr2_tgt_normal;
-extern struct tr2_tgt tr2_tgt_perf;
-
-#endif /* TR2_TGT_H */
diff --git a/third_party/git/trace2/tr2_tgt_event.c b/third_party/git/trace2/tr2_tgt_event.c
deleted file mode 100644
index c2852d1bd2..0000000000
--- a/third_party/git/trace2/tr2_tgt_event.c
+++ /dev/null
@@ -1,591 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "json-writer.h"
-#include "run-command.h"
-#include "version.h"
-#include "trace2/tr2_dst.h"
-#include "trace2/tr2_tbuf.h"
-#include "trace2/tr2_sid.h"
-#include "trace2/tr2_sysenv.h"
-#include "trace2/tr2_tgt.h"
-#include "trace2/tr2_tls.h"
-
-static struct tr2_dst tr2dst_event = { TR2_SYSENV_EVENT, 0, 0, 0 };
-
-/*
- * The version number of the JSON data generated by the EVENT target
- * in this source file.  Update this if you make a significant change
- * to the JSON fields or message structure.  You probably do not need
- * to update this if you just add another call to one of the existing
- * TRACE2 API methods.
- */
-#define TR2_EVENT_VERSION "1"
-
-/*
- * Region nesting limit for messages written to the event target.
- *
- * The "region_enter" and "region_leave" messages (especially recursive
- * messages such as those produced while diving the worktree or index)
- * are primarily intended for the performance target during debugging.
- *
- * Some of the outer-most messages, however, may be of interest to the
- * event target.  Use the TR2_SYSENV_EVENT_NESTING setting to increase
- * region details in the event target.
- */
-static int tr2env_event_max_nesting_levels = 2;
-
-/*
- * Use the TR2_SYSENV_EVENT_BRIEF to omit the <time>, <file>, and
- * <line> fields from most events.
- */
-static int tr2env_event_be_brief;
-
-static int fn_init(void)
-{
-	int want = tr2_dst_trace_want(&tr2dst_event);
-	int max_nesting;
-	int want_brief;
-	const char *nesting;
-	const char *brief;
-
-	if (!want)
-		return want;
-
-	nesting = tr2_sysenv_get(TR2_SYSENV_EVENT_NESTING);
-	if (nesting && *nesting && ((max_nesting = atoi(nesting)) > 0))
-		tr2env_event_max_nesting_levels = max_nesting;
-
-	brief = tr2_sysenv_get(TR2_SYSENV_EVENT_BRIEF);
-	if (brief && *brief &&
-	    ((want_brief = git_parse_maybe_bool(brief)) != -1))
-		tr2env_event_be_brief = want_brief;
-
-	return want;
-}
-
-static void fn_term(void)
-{
-	tr2_dst_trace_disable(&tr2dst_event);
-}
-
-/*
- * Append common key-value pairs to the currently open JSON object.
- *     "event:"<event_name>"
- *      "sid":"<sid>"
- *   "thread":"<thread_name>"
- *     "time":"<time>"
- *     "file":"<filename>"
- *     "line":<line_number>
- *     "repo":<repo_id>
- */
-static void event_fmt_prepare(const char *event_name, const char *file,
-			      int line, const struct repository *repo,
-			      struct json_writer *jw)
-{
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	struct tr2_tbuf tb_now;
-
-	jw_object_string(jw, "event", event_name);
-	jw_object_string(jw, "sid", tr2_sid_get());
-	jw_object_string(jw, "thread", ctx->thread_name.buf);
-
-	/*
-	 * In brief mode, only emit <time> on these 2 event types.
-	 */
-	if (!tr2env_event_be_brief || !strcmp(event_name, "version") ||
-	    !strcmp(event_name, "atexit")) {
-		tr2_tbuf_utc_datetime_extended(&tb_now);
-		jw_object_string(jw, "time", tb_now.buf);
-	}
-
-	if (!tr2env_event_be_brief && file && *file) {
-		jw_object_string(jw, "file", file);
-		jw_object_intmax(jw, "line", line);
-	}
-
-	if (repo)
-		jw_object_intmax(jw, "repo", repo->trace2_repo_id);
-}
-
-static void fn_version_fl(const char *file, int line)
-{
-	const char *event_name = "version";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "evt", TR2_EVENT_VERSION);
-	jw_object_string(&jw, "exe", git_version_string);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_start_fl(const char *file, int line,
-			uint64_t us_elapsed_absolute, const char **argv)
-{
-	const char *event_name = "start";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_abs = (double)us_elapsed_absolute / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_double(&jw, "t_abs", 6, t_abs);
-	jw_object_inline_begin_array(&jw, "argv");
-	jw_array_argv(&jw, argv);
-	jw_end(&jw);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int code)
-{
-	const char *event_name = "exit";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_abs = (double)us_elapsed_absolute / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_double(&jw, "t_abs", 6, t_abs);
-	jw_object_intmax(&jw, "code", code);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_signal(uint64_t us_elapsed_absolute, int signo)
-{
-	const char *event_name = "signal";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_abs = (double)us_elapsed_absolute / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, __FILE__, __LINE__, NULL, &jw);
-	jw_object_double(&jw, "t_abs", 6, t_abs);
-	jw_object_intmax(&jw, "signo", signo);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_atexit(uint64_t us_elapsed_absolute, int code)
-{
-	const char *event_name = "atexit";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_abs = (double)us_elapsed_absolute / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, __FILE__, __LINE__, NULL, &jw);
-	jw_object_double(&jw, "t_abs", 6, t_abs);
-	jw_object_intmax(&jw, "code", code);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void maybe_add_string_va(struct json_writer *jw, const char *field_name,
-				const char *fmt, va_list ap)
-{
-	if (fmt && *fmt) {
-		va_list copy_ap;
-		struct strbuf buf = STRBUF_INIT;
-
-		va_copy(copy_ap, ap);
-		strbuf_vaddf(&buf, fmt, copy_ap);
-		va_end(copy_ap);
-
-		jw_object_string(jw, field_name, buf.buf);
-		strbuf_release(&buf);
-		return;
-	}
-
-	if (fmt && *fmt) {
-		jw_object_string(jw, field_name, fmt);
-		return;
-	}
-}
-
-static void fn_error_va_fl(const char *file, int line, const char *fmt,
-			   va_list ap)
-{
-	const char *event_name = "error";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	maybe_add_string_va(&jw, "msg", fmt, ap);
-	/*
-	 * Also emit the format string as a field in case
-	 * post-processors want to aggregate common error
-	 * messages by type without argument fields (such
-	 * as pathnames or branch names) cluttering it up.
-	 */
-	if (fmt && *fmt)
-		jw_object_string(&jw, "fmt", fmt);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_command_path_fl(const char *file, int line, const char *pathname)
-{
-	const char *event_name = "cmd_path";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "path", pathname);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_command_name_fl(const char *file, int line, const char *name,
-			       const char *hierarchy)
-{
-	const char *event_name = "cmd_name";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "name", name);
-	if (hierarchy && *hierarchy)
-		jw_object_string(&jw, "hierarchy", hierarchy);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_command_mode_fl(const char *file, int line, const char *mode)
-{
-	const char *event_name = "cmd_mode";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "name", mode);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_alias_fl(const char *file, int line, const char *alias,
-			const char **argv)
-{
-	const char *event_name = "alias";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "alias", alias);
-	jw_object_inline_begin_array(&jw, "argv");
-	jw_array_argv(&jw, argv);
-	jw_end(&jw);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_child_start_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute,
-			      const struct child_process *cmd)
-{
-	const char *event_name = "child_start";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_intmax(&jw, "child_id", cmd->trace2_child_id);
-	if (cmd->trace2_hook_name) {
-		jw_object_string(&jw, "child_class", "hook");
-		jw_object_string(&jw, "hook_name", cmd->trace2_hook_name);
-	} else {
-		const char *child_class =
-			cmd->trace2_child_class ? cmd->trace2_child_class : "?";
-		jw_object_string(&jw, "child_class", child_class);
-	}
-	if (cmd->dir)
-		jw_object_string(&jw, "cd", cmd->dir);
-	jw_object_bool(&jw, "use_shell", cmd->use_shell);
-	jw_object_inline_begin_array(&jw, "argv");
-	if (cmd->git_cmd)
-		jw_array_string(&jw, "git");
-	jw_array_argv(&jw, cmd->argv);
-	jw_end(&jw);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_child_exit_fl(const char *file, int line,
-			     uint64_t us_elapsed_absolute, int cid, int pid,
-			     int code, uint64_t us_elapsed_child)
-{
-	const char *event_name = "child_exit";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_rel = (double)us_elapsed_child / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_intmax(&jw, "child_id", cid);
-	jw_object_intmax(&jw, "pid", pid);
-	jw_object_intmax(&jw, "code", code);
-	jw_object_double(&jw, "t_rel", 6, t_rel);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-
-	jw_release(&jw);
-}
-
-static void fn_thread_start_fl(const char *file, int line,
-			       uint64_t us_elapsed_absolute)
-{
-	const char *event_name = "thread_start";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_thread_exit_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute,
-			      uint64_t us_elapsed_thread)
-{
-	const char *event_name = "thread_exit";
-	struct json_writer jw = JSON_WRITER_INIT;
-	double t_rel = (double)us_elapsed_thread / 1000000.0;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_double(&jw, "t_rel", 6, t_rel);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int exec_id, const char *exe, const char **argv)
-{
-	const char *event_name = "exec";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_intmax(&jw, "exec_id", exec_id);
-	if (exe)
-		jw_object_string(&jw, "exe", exe);
-	jw_object_inline_begin_array(&jw, "argv");
-	jw_array_argv(&jw, argv);
-	jw_end(&jw);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_exec_result_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute, int exec_id,
-			      int code)
-{
-	const char *event_name = "exec_result";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_intmax(&jw, "exec_id", exec_id);
-	jw_object_intmax(&jw, "code", code);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_param_fl(const char *file, int line, const char *param,
-			const char *value)
-{
-	const char *event_name = "def_param";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, NULL, &jw);
-	jw_object_string(&jw, "param", param);
-	jw_object_string(&jw, "value", value);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_repo_fl(const char *file, int line,
-		       const struct repository *repo)
-{
-	const char *event_name = "def_repo";
-	struct json_writer jw = JSON_WRITER_INIT;
-
-	jw_object_begin(&jw, 0);
-	event_fmt_prepare(event_name, file, line, repo, &jw);
-	jw_object_string(&jw, "worktree", repo->worktree);
-	jw_end(&jw);
-
-	tr2_dst_write_line(&tr2dst_event, &jw.json);
-	jw_release(&jw);
-}
-
-static void fn_region_enter_printf_va_fl(const char *file, int line,
-					 uint64_t us_elapsed_absolute,
-					 const char *category,
-					 const char *label,
-					 const struct repository *repo,
-					 const char *fmt, va_list ap)
-{
-	const char *event_name = "region_enter";
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	if (ctx->nr_open_regions <= tr2env_event_max_nesting_levels) {
-		struct json_writer jw = JSON_WRITER_INIT;
-
-		jw_object_begin(&jw, 0);
-		event_fmt_prepare(event_name, file, line, repo, &jw);
-		jw_object_intmax(&jw, "nesting", ctx->nr_open_regions);
-		if (category)
-			jw_object_string(&jw, "category", category);
-		if (label)
-			jw_object_string(&jw, "label", label);
-		maybe_add_string_va(&jw, "msg", fmt, ap);
-		jw_end(&jw);
-
-		tr2_dst_write_line(&tr2dst_event, &jw.json);
-		jw_release(&jw);
-	}
-}
-
-static void fn_region_leave_printf_va_fl(
-	const char *file, int line, uint64_t us_elapsed_absolute,
-	uint64_t us_elapsed_region, const char *category, const char *label,
-	const struct repository *repo, const char *fmt, va_list ap)
-{
-	const char *event_name = "region_leave";
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	if (ctx->nr_open_regions <= tr2env_event_max_nesting_levels) {
-		struct json_writer jw = JSON_WRITER_INIT;
-		double t_rel = (double)us_elapsed_region / 1000000.0;
-
-		jw_object_begin(&jw, 0);
-		event_fmt_prepare(event_name, file, line, repo, &jw);
-		jw_object_double(&jw, "t_rel", 6, t_rel);
-		jw_object_intmax(&jw, "nesting", ctx->nr_open_regions);
-		if (category)
-			jw_object_string(&jw, "category", category);
-		if (label)
-			jw_object_string(&jw, "label", label);
-		maybe_add_string_va(&jw, "msg", fmt, ap);
-		jw_end(&jw);
-
-		tr2_dst_write_line(&tr2dst_event, &jw.json);
-		jw_release(&jw);
-	}
-}
-
-static void fn_data_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       uint64_t us_elapsed_region, const char *category,
-		       const struct repository *repo, const char *key,
-		       const char *value)
-{
-	const char *event_name = "data";
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	if (ctx->nr_open_regions <= tr2env_event_max_nesting_levels) {
-		struct json_writer jw = JSON_WRITER_INIT;
-		double t_abs = (double)us_elapsed_absolute / 1000000.0;
-		double t_rel = (double)us_elapsed_region / 1000000.0;
-
-		jw_object_begin(&jw, 0);
-		event_fmt_prepare(event_name, file, line, repo, &jw);
-		jw_object_double(&jw, "t_abs", 6, t_abs);
-		jw_object_double(&jw, "t_rel", 6, t_rel);
-		jw_object_intmax(&jw, "nesting", ctx->nr_open_regions);
-		jw_object_string(&jw, "category", category);
-		jw_object_string(&jw, "key", key);
-		jw_object_string(&jw, "value", value);
-		jw_end(&jw);
-
-		tr2_dst_write_line(&tr2dst_event, &jw.json);
-		jw_release(&jw);
-	}
-}
-
-static void fn_data_json_fl(const char *file, int line,
-			    uint64_t us_elapsed_absolute,
-			    uint64_t us_elapsed_region, const char *category,
-			    const struct repository *repo, const char *key,
-			    const struct json_writer *value)
-{
-	const char *event_name = "data_json";
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	if (ctx->nr_open_regions <= tr2env_event_max_nesting_levels) {
-		struct json_writer jw = JSON_WRITER_INIT;
-		double t_abs = (double)us_elapsed_absolute / 1000000.0;
-		double t_rel = (double)us_elapsed_region / 1000000.0;
-
-		jw_object_begin(&jw, 0);
-		event_fmt_prepare(event_name, file, line, repo, &jw);
-		jw_object_double(&jw, "t_abs", 6, t_abs);
-		jw_object_double(&jw, "t_rel", 6, t_rel);
-		jw_object_intmax(&jw, "nesting", ctx->nr_open_regions);
-		jw_object_string(&jw, "category", category);
-		jw_object_string(&jw, "key", key);
-		jw_object_sub_jw(&jw, "value", value);
-		jw_end(&jw);
-
-		tr2_dst_write_line(&tr2dst_event, &jw.json);
-		jw_release(&jw);
-	}
-}
-
-struct tr2_tgt tr2_tgt_event = {
-	&tr2dst_event,
-
-	fn_init,
-	fn_term,
-
-	fn_version_fl,
-	fn_start_fl,
-	fn_exit_fl,
-	fn_signal,
-	fn_atexit,
-	fn_error_va_fl,
-	fn_command_path_fl,
-	fn_command_name_fl,
-	fn_command_mode_fl,
-	fn_alias_fl,
-	fn_child_start_fl,
-	fn_child_exit_fl,
-	fn_thread_start_fl,
-	fn_thread_exit_fl,
-	fn_exec_fl,
-	fn_exec_result_fl,
-	fn_param_fl,
-	fn_repo_fl,
-	fn_region_enter_printf_va_fl,
-	fn_region_leave_printf_va_fl,
-	fn_data_fl,
-	fn_data_json_fl,
-	NULL, /* printf */
-};
diff --git a/third_party/git/trace2/tr2_tgt_normal.c b/third_party/git/trace2/tr2_tgt_normal.c
deleted file mode 100644
index 00b116d797..0000000000
--- a/third_party/git/trace2/tr2_tgt_normal.c
+++ /dev/null
@@ -1,324 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "run-command.h"
-#include "quote.h"
-#include "version.h"
-#include "trace2/tr2_dst.h"
-#include "trace2/tr2_sysenv.h"
-#include "trace2/tr2_tbuf.h"
-#include "trace2/tr2_tgt.h"
-#include "trace2/tr2_tls.h"
-
-static struct tr2_dst tr2dst_normal = { TR2_SYSENV_NORMAL, 0, 0, 0 };
-
-/*
- * Use the TR2_SYSENV_NORMAL_BRIEF setting to omit the "<time> <file>:<line>"
- * fields from each line written to the builtin normal target.
- *
- * Unit tests may want to use this to help with testing.
- */
-static int tr2env_normal_be_brief;
-
-#define TR2FMT_NORMAL_FL_WIDTH (50)
-
-static int fn_init(void)
-{
-	int want = tr2_dst_trace_want(&tr2dst_normal);
-	int want_brief;
-	const char *brief;
-
-	if (!want)
-		return want;
-
-	brief = tr2_sysenv_get(TR2_SYSENV_NORMAL_BRIEF);
-	if (brief && *brief &&
-	    ((want_brief = git_parse_maybe_bool(brief)) != -1))
-		tr2env_normal_be_brief = want_brief;
-
-	return want;
-}
-
-static void fn_term(void)
-{
-	tr2_dst_trace_disable(&tr2dst_normal);
-}
-
-static void normal_fmt_prepare(const char *file, int line, struct strbuf *buf)
-{
-	strbuf_setlen(buf, 0);
-
-	if (!tr2env_normal_be_brief) {
-		struct tr2_tbuf tb_now;
-
-		tr2_tbuf_local_time(&tb_now);
-		strbuf_addstr(buf, tb_now.buf);
-		strbuf_addch(buf, ' ');
-
-		if (file && *file)
-			strbuf_addf(buf, "%s:%d ", file, line);
-		while (buf->len < TR2FMT_NORMAL_FL_WIDTH)
-			strbuf_addch(buf, ' ');
-	}
-}
-
-static void normal_io_write_fl(const char *file, int line,
-			       const struct strbuf *buf_payload)
-{
-	struct strbuf buf_line = STRBUF_INIT;
-
-	normal_fmt_prepare(file, line, &buf_line);
-	strbuf_addbuf(&buf_line, buf_payload);
-	tr2_dst_write_line(&tr2dst_normal, &buf_line);
-	strbuf_release(&buf_line);
-}
-
-static void fn_version_fl(const char *file, int line)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "version %s", git_version_string);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_start_fl(const char *file, int line,
-			uint64_t us_elapsed_absolute, const char **argv)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, "start ");
-	sq_quote_argv_pretty(&buf_payload, argv);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int code)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-	double elapsed = (double)us_elapsed_absolute / 1000000.0;
-
-	strbuf_addf(&buf_payload, "exit elapsed:%.6f code:%d", elapsed, code);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_signal(uint64_t us_elapsed_absolute, int signo)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-	double elapsed = (double)us_elapsed_absolute / 1000000.0;
-
-	strbuf_addf(&buf_payload, "signal elapsed:%.6f code:%d", elapsed,
-		    signo);
-	normal_io_write_fl(__FILE__, __LINE__, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_atexit(uint64_t us_elapsed_absolute, int code)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-	double elapsed = (double)us_elapsed_absolute / 1000000.0;
-
-	strbuf_addf(&buf_payload, "atexit elapsed:%.6f code:%d", elapsed, code);
-	normal_io_write_fl(__FILE__, __LINE__, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void maybe_append_string_va(struct strbuf *buf, const char *fmt,
-				   va_list ap)
-{
-	if (fmt && *fmt) {
-		va_list copy_ap;
-
-		va_copy(copy_ap, ap);
-		strbuf_vaddf(buf, fmt, copy_ap);
-		va_end(copy_ap);
-		return;
-	}
-
-	if (fmt && *fmt) {
-		strbuf_addstr(buf, fmt);
-		return;
-	}
-}
-
-static void fn_error_va_fl(const char *file, int line, const char *fmt,
-			   va_list ap)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, "error ");
-	maybe_append_string_va(&buf_payload, fmt, ap);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_path_fl(const char *file, int line, const char *pathname)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "cmd_path %s", pathname);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_name_fl(const char *file, int line, const char *name,
-			       const char *hierarchy)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "cmd_name %s", name);
-	if (hierarchy && *hierarchy)
-		strbuf_addf(&buf_payload, " (%s)", hierarchy);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_mode_fl(const char *file, int line, const char *mode)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "cmd_mode %s", mode);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_alias_fl(const char *file, int line, const char *alias,
-			const char **argv)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "alias %s ->", alias);
-	sq_quote_argv_pretty(&buf_payload, argv);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_child_start_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute,
-			      const struct child_process *cmd)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "child_start[%d] ", cmd->trace2_child_id);
-
-	if (cmd->dir) {
-		strbuf_addstr(&buf_payload, " cd");
-		sq_quote_buf_pretty(&buf_payload, cmd->dir);
-		strbuf_addstr(&buf_payload, "; ");
-	}
-
-	/*
-	 * TODO if (cmd->env) { Consider dumping changes to environment. }
-	 * See trace_add_env() in run-command.c as used by original trace.c
-	 */
-
-	if (cmd->git_cmd)
-		strbuf_addstr(&buf_payload, "git");
-	sq_quote_argv_pretty(&buf_payload, cmd->argv);
-
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_child_exit_fl(const char *file, int line,
-			     uint64_t us_elapsed_absolute, int cid, int pid,
-			     int code, uint64_t us_elapsed_child)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-	double elapsed = (double)us_elapsed_child / 1000000.0;
-
-	strbuf_addf(&buf_payload, "child_exit[%d] pid:%d code:%d elapsed:%.6f",
-		    cid, pid, code, elapsed);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int exec_id, const char *exe, const char **argv)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "exec[%d] ", exec_id);
-	if (exe)
-		strbuf_addstr(&buf_payload, exe);
-	sq_quote_argv_pretty(&buf_payload, argv);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exec_result_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute, int exec_id,
-			      int code)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "exec_result[%d] code:%d", exec_id, code);
-	if (code > 0)
-		strbuf_addf(&buf_payload, " err:%s", strerror(code));
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_param_fl(const char *file, int line, const char *param,
-			const char *value)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "def_param %s=%s", param, value);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_repo_fl(const char *file, int line,
-		       const struct repository *repo)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, "worktree ");
-	sq_quote_buf_pretty(&buf_payload, repo->worktree);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_printf_va_fl(const char *file, int line,
-			    uint64_t us_elapsed_absolute, const char *fmt,
-			    va_list ap)
-{
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	maybe_append_string_va(&buf_payload, fmt, ap);
-	normal_io_write_fl(file, line, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-struct tr2_tgt tr2_tgt_normal = {
-	&tr2dst_normal,
-
-	fn_init,
-	fn_term,
-
-	fn_version_fl,
-	fn_start_fl,
-	fn_exit_fl,
-	fn_signal,
-	fn_atexit,
-	fn_error_va_fl,
-	fn_command_path_fl,
-	fn_command_name_fl,
-	fn_command_mode_fl,
-	fn_alias_fl,
-	fn_child_start_fl,
-	fn_child_exit_fl,
-	NULL, /* thread_start */
-	NULL, /* thread_exit */
-	fn_exec_fl,
-	fn_exec_result_fl,
-	fn_param_fl,
-	fn_repo_fl,
-	NULL, /* region_enter */
-	NULL, /* region_leave */
-	NULL, /* data */
-	NULL, /* data_json */
-	fn_printf_va_fl,
-};
diff --git a/third_party/git/trace2/tr2_tgt_perf.c b/third_party/git/trace2/tr2_tgt_perf.c
deleted file mode 100644
index ea0cbbe13e..0000000000
--- a/third_party/git/trace2/tr2_tgt_perf.c
+++ /dev/null
@@ -1,535 +0,0 @@
-#include "cache.h"
-#include "config.h"
-#include "run-command.h"
-#include "quote.h"
-#include "version.h"
-#include "json-writer.h"
-#include "trace2/tr2_dst.h"
-#include "trace2/tr2_sid.h"
-#include "trace2/tr2_sysenv.h"
-#include "trace2/tr2_tbuf.h"
-#include "trace2/tr2_tgt.h"
-#include "trace2/tr2_tls.h"
-
-static struct tr2_dst tr2dst_perf = { TR2_SYSENV_PERF, 0, 0, 0 };
-
-/*
- * Use TR2_SYSENV_PERF_BRIEF to omit the "<time> <file>:<line>"
- * fields from each line written to the builtin performance target.
- *
- * Unit tests may want to use this to help with testing.
- */
-static int tr2env_perf_be_brief;
-
-#define TR2FMT_PERF_FL_WIDTH (50)
-#define TR2FMT_PERF_MAX_EVENT_NAME (12)
-#define TR2FMT_PERF_REPO_WIDTH (4)
-#define TR2FMT_PERF_CATEGORY_WIDTH (10)
-
-#define TR2_DOTS_BUFFER_SIZE (100)
-#define TR2_INDENT (2)
-#define TR2_INDENT_LENGTH(ctx) (((ctx)->nr_open_regions - 1) * TR2_INDENT)
-
-static struct strbuf dots = STRBUF_INIT;
-
-static int fn_init(void)
-{
-	int want = tr2_dst_trace_want(&tr2dst_perf);
-	int want_brief;
-	const char *brief;
-
-	if (!want)
-		return want;
-
-	strbuf_addchars(&dots, '.', TR2_DOTS_BUFFER_SIZE);
-
-	brief = tr2_sysenv_get(TR2_SYSENV_PERF_BRIEF);
-	if (brief && *brief &&
-	    ((want_brief = git_parse_maybe_bool(brief)) != -1))
-		tr2env_perf_be_brief = want_brief;
-
-	return want;
-}
-
-static void fn_term(void)
-{
-	tr2_dst_trace_disable(&tr2dst_perf);
-
-	strbuf_release(&dots);
-}
-
-/*
- * Format trace line prefix in human-readable classic format for
- * the performance target:
- *     "[<time> [<file>:<line>] <bar>] <nr_parents> <bar>
- *         <thread_name> <bar> <event_name> <bar> [<repo>] <bar>
- *         [<elapsed_absolute>] [<elapsed_relative>] <bar>
- *         [<category>] <bar> [<dots>] "
- */
-static void perf_fmt_prepare(const char *event_name,
-			     struct tr2tls_thread_ctx *ctx, const char *file,
-			     int line, const struct repository *repo,
-			     uint64_t *p_us_elapsed_absolute,
-			     uint64_t *p_us_elapsed_relative,
-			     const char *category, struct strbuf *buf)
-{
-	int len;
-
-	strbuf_setlen(buf, 0);
-
-	if (!tr2env_perf_be_brief) {
-		struct tr2_tbuf tb_now;
-
-		tr2_tbuf_local_time(&tb_now);
-		strbuf_addstr(buf, tb_now.buf);
-		strbuf_addch(buf, ' ');
-
-		if (file && *file)
-			strbuf_addf(buf, "%s:%d ", file, line);
-		while (buf->len < TR2FMT_PERF_FL_WIDTH)
-			strbuf_addch(buf, ' ');
-
-		strbuf_addstr(buf, "| ");
-	}
-
-	strbuf_addf(buf, "d%d | ", tr2_sid_depth());
-	strbuf_addf(buf, "%-*s | %-*s | ", TR2_MAX_THREAD_NAME,
-		    ctx->thread_name.buf, TR2FMT_PERF_MAX_EVENT_NAME,
-		    event_name);
-
-	len = buf->len + TR2FMT_PERF_REPO_WIDTH;
-	if (repo)
-		strbuf_addf(buf, "r%d ", repo->trace2_repo_id);
-	while (buf->len < len)
-		strbuf_addch(buf, ' ');
-	strbuf_addstr(buf, "| ");
-
-	if (p_us_elapsed_absolute)
-		strbuf_addf(buf, "%9.6f | ",
-			    ((double)(*p_us_elapsed_absolute)) / 1000000.0);
-	else
-		strbuf_addf(buf, "%9s | ", " ");
-
-	if (p_us_elapsed_relative)
-		strbuf_addf(buf, "%9.6f | ",
-			    ((double)(*p_us_elapsed_relative)) / 1000000.0);
-	else
-		strbuf_addf(buf, "%9s | ", " ");
-
-	strbuf_addf(buf, "%-*s | ", TR2FMT_PERF_CATEGORY_WIDTH,
-		    (category ? category : ""));
-
-	if (ctx->nr_open_regions > 0) {
-		int len_indent = TR2_INDENT_LENGTH(ctx);
-		while (len_indent > dots.len) {
-			strbuf_addbuf(buf, &dots);
-			len_indent -= dots.len;
-		}
-		strbuf_addf(buf, "%.*s", len_indent, dots.buf);
-	}
-}
-
-static void perf_io_write_fl(const char *file, int line, const char *event_name,
-			     const struct repository *repo,
-			     uint64_t *p_us_elapsed_absolute,
-			     uint64_t *p_us_elapsed_relative,
-			     const char *category,
-			     const struct strbuf *buf_payload)
-{
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-	struct strbuf buf_line = STRBUF_INIT;
-
-	perf_fmt_prepare(event_name, ctx, file, line, repo,
-			 p_us_elapsed_absolute, p_us_elapsed_relative, category,
-			 &buf_line);
-	strbuf_addbuf(&buf_line, buf_payload);
-	tr2_dst_write_line(&tr2dst_perf, &buf_line);
-	strbuf_release(&buf_line);
-}
-
-static void fn_version_fl(const char *file, int line)
-{
-	const char *event_name = "version";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, git_version_string);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_start_fl(const char *file, int line,
-			uint64_t us_elapsed_absolute, const char **argv)
-{
-	const char *event_name = "start";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	sq_quote_argv_pretty(&buf_payload, argv);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int code)
-{
-	const char *event_name = "exit";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "code:%d", code);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_signal(uint64_t us_elapsed_absolute, int signo)
-{
-	const char *event_name = "signal";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "signo:%d", signo);
-
-	perf_io_write_fl(__FILE__, __LINE__, event_name, NULL,
-			 &us_elapsed_absolute, NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_atexit(uint64_t us_elapsed_absolute, int code)
-{
-	const char *event_name = "atexit";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "code:%d", code);
-
-	perf_io_write_fl(__FILE__, __LINE__, event_name, NULL,
-			 &us_elapsed_absolute, NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void maybe_append_string_va(struct strbuf *buf, const char *fmt,
-				   va_list ap)
-{
-	if (fmt && *fmt) {
-		va_list copy_ap;
-
-		va_copy(copy_ap, ap);
-		strbuf_vaddf(buf, fmt, copy_ap);
-		va_end(copy_ap);
-		return;
-	}
-
-	if (fmt && *fmt) {
-		strbuf_addstr(buf, fmt);
-		return;
-	}
-}
-
-static void fn_error_va_fl(const char *file, int line, const char *fmt,
-			   va_list ap)
-{
-	const char *event_name = "error";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	maybe_append_string_va(&buf_payload, fmt, ap);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_path_fl(const char *file, int line, const char *pathname)
-{
-	const char *event_name = "cmd_path";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, pathname);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_name_fl(const char *file, int line, const char *name,
-			       const char *hierarchy)
-{
-	const char *event_name = "cmd_name";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, name);
-	if (hierarchy && *hierarchy)
-		strbuf_addf(&buf_payload, " (%s)", hierarchy);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_command_mode_fl(const char *file, int line, const char *mode)
-{
-	const char *event_name = "cmd_mode";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, mode);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_alias_fl(const char *file, int line, const char *alias,
-			const char **argv)
-{
-	const char *event_name = "alias";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "alias:%s argv:", alias);
-	sq_quote_argv_pretty(&buf_payload, argv);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_child_start_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute,
-			      const struct child_process *cmd)
-{
-	const char *event_name = "child_start";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	if (cmd->trace2_hook_name) {
-		strbuf_addf(&buf_payload, "[ch%d] class:hook hook:%s",
-			    cmd->trace2_child_id, cmd->trace2_hook_name);
-	} else {
-		const char *child_class =
-			cmd->trace2_child_class ? cmd->trace2_child_class : "?";
-		strbuf_addf(&buf_payload, "[ch%d] class:%s",
-			    cmd->trace2_child_id, child_class);
-	}
-
-	if (cmd->dir) {
-		strbuf_addstr(&buf_payload, " cd:");
-		sq_quote_buf_pretty(&buf_payload, cmd->dir);
-	}
-
-	strbuf_addstr(&buf_payload, " argv:");
-	if (cmd->git_cmd)
-		strbuf_addstr(&buf_payload, " git");
-	sq_quote_argv_pretty(&buf_payload, cmd->argv);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_child_exit_fl(const char *file, int line,
-			     uint64_t us_elapsed_absolute, int cid, int pid,
-			     int code, uint64_t us_elapsed_child)
-{
-	const char *event_name = "child_exit";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "[ch%d] pid:%d code:%d", cid, pid, code);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 &us_elapsed_child, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_thread_start_fl(const char *file, int line,
-			       uint64_t us_elapsed_absolute)
-{
-	const char *event_name = "thread_start";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_thread_exit_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute,
-			      uint64_t us_elapsed_thread)
-{
-	const char *event_name = "thread_exit";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 &us_elapsed_thread, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       int exec_id, const char *exe, const char **argv)
-{
-	const char *event_name = "exec";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "id:%d ", exec_id);
-	strbuf_addstr(&buf_payload, "argv:");
-	if (exe)
-		strbuf_addf(&buf_payload, " %s", exe);
-	sq_quote_argv_pretty(&buf_payload, argv);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_exec_result_fl(const char *file, int line,
-			      uint64_t us_elapsed_absolute, int exec_id,
-			      int code)
-{
-	const char *event_name = "exec_result";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "id:%d code:%d", exec_id, code);
-	if (code > 0)
-		strbuf_addf(&buf_payload, " err:%s", strerror(code));
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_param_fl(const char *file, int line, const char *param,
-			const char *value)
-{
-	const char *event_name = "def_param";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "%s:%s", param, value);
-
-	perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_repo_fl(const char *file, int line,
-		       const struct repository *repo)
-{
-	const char *event_name = "def_repo";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addstr(&buf_payload, "worktree:");
-	sq_quote_buf_pretty(&buf_payload, repo->worktree);
-
-	perf_io_write_fl(file, line, event_name, repo, NULL, NULL, NULL,
-			 &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_region_enter_printf_va_fl(const char *file, int line,
-					 uint64_t us_elapsed_absolute,
-					 const char *category,
-					 const char *label,
-					 const struct repository *repo,
-					 const char *fmt, va_list ap)
-{
-	const char *event_name = "region_enter";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	if (label)
-		strbuf_addf(&buf_payload, "label:%s ", label);
-	maybe_append_string_va(&buf_payload, fmt, ap);
-
-	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
-			 NULL, category, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_region_leave_printf_va_fl(
-	const char *file, int line, uint64_t us_elapsed_absolute,
-	uint64_t us_elapsed_region, const char *category, const char *label,
-	const struct repository *repo, const char *fmt, va_list ap)
-{
-	const char *event_name = "region_leave";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	if (label)
-		strbuf_addf(&buf_payload, "label:%s ", label);
-	maybe_append_string_va(&buf_payload, fmt, ap);
-
-	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
-			 &us_elapsed_region, category, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_data_fl(const char *file, int line, uint64_t us_elapsed_absolute,
-		       uint64_t us_elapsed_region, const char *category,
-		       const struct repository *repo, const char *key,
-		       const char *value)
-{
-	const char *event_name = "data";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "%s:%s", key, value);
-
-	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
-			 &us_elapsed_region, category, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_data_json_fl(const char *file, int line,
-			    uint64_t us_elapsed_absolute,
-			    uint64_t us_elapsed_region, const char *category,
-			    const struct repository *repo, const char *key,
-			    const struct json_writer *value)
-{
-	const char *event_name = "data_json";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	strbuf_addf(&buf_payload, "%s:%s", key, value->json.buf);
-
-	perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
-			 &us_elapsed_region, category, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-static void fn_printf_va_fl(const char *file, int line,
-			    uint64_t us_elapsed_absolute, const char *fmt,
-			    va_list ap)
-{
-	const char *event_name = "printf";
-	struct strbuf buf_payload = STRBUF_INIT;
-
-	maybe_append_string_va(&buf_payload, fmt, ap);
-
-	perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute,
-			 NULL, NULL, &buf_payload);
-	strbuf_release(&buf_payload);
-}
-
-struct tr2_tgt tr2_tgt_perf = {
-	&tr2dst_perf,
-
-	fn_init,
-	fn_term,
-
-	fn_version_fl,
-	fn_start_fl,
-	fn_exit_fl,
-	fn_signal,
-	fn_atexit,
-	fn_error_va_fl,
-	fn_command_path_fl,
-	fn_command_name_fl,
-	fn_command_mode_fl,
-	fn_alias_fl,
-	fn_child_start_fl,
-	fn_child_exit_fl,
-	fn_thread_start_fl,
-	fn_thread_exit_fl,
-	fn_exec_fl,
-	fn_exec_result_fl,
-	fn_param_fl,
-	fn_repo_fl,
-	fn_region_enter_printf_va_fl,
-	fn_region_leave_printf_va_fl,
-	fn_data_fl,
-	fn_data_json_fl,
-	fn_printf_va_fl,
-};
diff --git a/third_party/git/trace2/tr2_tls.c b/third_party/git/trace2/tr2_tls.c
deleted file mode 100644
index 067c23755f..0000000000
--- a/third_party/git/trace2/tr2_tls.c
+++ /dev/null
@@ -1,180 +0,0 @@
-#include "cache.h"
-#include "thread-utils.h"
-#include "trace2/tr2_tls.h"
-
-/*
- * Initialize size of the thread stack for nested regions.
- * This is used to store nested region start times.  Note that
- * this stack is per-thread and not per-trace-key.
- */
-#define TR2_REGION_NESTING_INITIAL_SIZE (100)
-
-static struct tr2tls_thread_ctx *tr2tls_thread_main;
-static uint64_t tr2tls_us_start_process;
-
-static pthread_mutex_t tr2tls_mutex;
-static pthread_key_t tr2tls_key;
-
-static int tr2_next_thread_id; /* modify under lock */
-
-void tr2tls_start_process_clock(void)
-{
-	if (tr2tls_us_start_process)
-		return;
-
-	/*
-	 * Keep the absolute start time of the process (i.e. the main
-	 * process) in a fixed variable since other threads need to
-	 * access it.  This allows them to do that without a lock on
-	 * main thread's array data (because of reallocs).
-	 */
-	tr2tls_us_start_process = getnanotime() / 1000;
-}
-
-struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_name,
-					     uint64_t us_thread_start)
-{
-	struct tr2tls_thread_ctx *ctx = xcalloc(1, sizeof(*ctx));
-
-	/*
-	 * Implicitly "tr2tls_push_self()" to capture the thread's start
-	 * time in array_us_start[0].  For the main thread this gives us the
-	 * application run time.
-	 */
-	ctx->alloc = TR2_REGION_NESTING_INITIAL_SIZE;
-	ctx->array_us_start = (uint64_t *)xcalloc(ctx->alloc, sizeof(uint64_t));
-	ctx->array_us_start[ctx->nr_open_regions++] = us_thread_start;
-
-	ctx->thread_id = tr2tls_locked_increment(&tr2_next_thread_id);
-
-	strbuf_init(&ctx->thread_name, 0);
-	if (ctx->thread_id)
-		strbuf_addf(&ctx->thread_name, "th%02d:", ctx->thread_id);
-	strbuf_addstr(&ctx->thread_name, thread_name);
-	if (ctx->thread_name.len > TR2_MAX_THREAD_NAME)
-		strbuf_setlen(&ctx->thread_name, TR2_MAX_THREAD_NAME);
-
-	pthread_setspecific(tr2tls_key, ctx);
-
-	return ctx;
-}
-
-struct tr2tls_thread_ctx *tr2tls_get_self(void)
-{
-	struct tr2tls_thread_ctx *ctx;
-
-	if (!HAVE_THREADS)
-		return tr2tls_thread_main;
-
-	ctx = pthread_getspecific(tr2tls_key);
-
-	/*
-	 * If the thread-proc did not call trace2_thread_start(), we won't
-	 * have any TLS data associated with the current thread.  Fix it
-	 * here and silently continue.
-	 */
-	if (!ctx)
-		ctx = tr2tls_create_self("unknown", getnanotime() / 1000);
-
-	return ctx;
-}
-
-int tr2tls_is_main_thread(void)
-{
-	if (!HAVE_THREADS)
-		return 1;
-
-	return pthread_getspecific(tr2tls_key) == tr2tls_thread_main;
-}
-
-void tr2tls_unset_self(void)
-{
-	struct tr2tls_thread_ctx *ctx;
-
-	ctx = tr2tls_get_self();
-
-	pthread_setspecific(tr2tls_key, NULL);
-
-	free(ctx->array_us_start);
-	free(ctx);
-}
-
-void tr2tls_push_self(uint64_t us_now)
-{
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-
-	ALLOC_GROW(ctx->array_us_start, ctx->nr_open_regions + 1, ctx->alloc);
-	ctx->array_us_start[ctx->nr_open_regions++] = us_now;
-}
-
-void tr2tls_pop_self(void)
-{
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-
-	if (!ctx->nr_open_regions)
-		BUG("no open regions in thread '%s'", ctx->thread_name.buf);
-
-	ctx->nr_open_regions--;
-}
-
-void tr2tls_pop_unwind_self(void)
-{
-	struct tr2tls_thread_ctx *ctx = tr2tls_get_self();
-
-	while (ctx->nr_open_regions > 1)
-		tr2tls_pop_self();
-}
-
-uint64_t tr2tls_region_elasped_self(uint64_t us)
-{
-	struct tr2tls_thread_ctx *ctx;
-	uint64_t us_start;
-
-	ctx = tr2tls_get_self();
-	if (!ctx->nr_open_regions)
-		return 0;
-
-	us_start = ctx->array_us_start[ctx->nr_open_regions - 1];
-
-	return us - us_start;
-}
-
-uint64_t tr2tls_absolute_elapsed(uint64_t us)
-{
-	if (!tr2tls_thread_main)
-		return 0;
-
-	return us - tr2tls_us_start_process;
-}
-
-void tr2tls_init(void)
-{
-	tr2tls_start_process_clock();
-
-	pthread_key_create(&tr2tls_key, NULL);
-	init_recursive_mutex(&tr2tls_mutex);
-
-	tr2tls_thread_main =
-		tr2tls_create_self("main", tr2tls_us_start_process);
-}
-
-void tr2tls_release(void)
-{
-	tr2tls_unset_self();
-	tr2tls_thread_main = NULL;
-
-	pthread_mutex_destroy(&tr2tls_mutex);
-	pthread_key_delete(tr2tls_key);
-}
-
-int tr2tls_locked_increment(int *p)
-{
-	int current_value;
-
-	pthread_mutex_lock(&tr2tls_mutex);
-	current_value = *p;
-	*p = current_value + 1;
-	pthread_mutex_unlock(&tr2tls_mutex);
-
-	return current_value;
-}
diff --git a/third_party/git/trace2/tr2_tls.h b/third_party/git/trace2/tr2_tls.h
deleted file mode 100644
index b1e327a928..0000000000
--- a/third_party/git/trace2/tr2_tls.h
+++ /dev/null
@@ -1,103 +0,0 @@
-#ifndef TR2_TLS_H
-#define TR2_TLS_H
-
-#include "strbuf.h"
-
-/*
- * Arbitry limit for thread names for column alignment.
- */
-#define TR2_MAX_THREAD_NAME (24)
-
-struct tr2tls_thread_ctx {
-	struct strbuf thread_name;
-	uint64_t *array_us_start;
-	int alloc;
-	int nr_open_regions; /* plays role of "nr" in ALLOC_GROW */
-	int thread_id;
-};
-
-/*
- * Create TLS data for the current thread.  This gives us a place to
- * put per-thread data, such as thread start time, function nesting
- * and a per-thread label for our messages.
- *
- * We assume the first thread is "main".  Other threads are given
- * non-zero thread-ids to help distinguish messages from concurrent
- * threads.
- *
- * Truncate the thread name if necessary to help with column alignment
- * in printf-style messages.
- *
- * In this and all following functions the term "self" refers to the
- * current thread.
- */
-struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_name,
-					     uint64_t us_thread_start);
-
-/*
- * Get our TLS data.
- */
-struct tr2tls_thread_ctx *tr2tls_get_self(void);
-
-/*
- * return true if the current thread is the main thread.
- */
-int tr2tls_is_main_thread(void);
-
-/*
- * Free our TLS data.
- */
-void tr2tls_unset_self(void);
-
-/*
- * Begin a new nested region and remember the start time.
- */
-void tr2tls_push_self(uint64_t us_now);
-
-/*
- * End the innermost nested region.
- */
-void tr2tls_pop_self(void);
-
-/*
- * Pop any extra (above the first) open regions on the current
- * thread and discard.  During a thread-exit, we should only
- * have region[0] that was pushed in trace2_thread_start() if
- * the thread exits normally.
- */
-void tr2tls_pop_unwind_self(void);
-
-/*
- * Compute the elapsed time since the innermost region in the
- * current thread started and the given time (usually now).
- */
-uint64_t tr2tls_region_elasped_self(uint64_t us);
-
-/*
- * Compute the elapsed time since the main thread started
- * and the given time (usually now).  This is assumed to
- * be the absolute run time of the process.
- */
-uint64_t tr2tls_absolute_elapsed(uint64_t us);
-
-/*
- * Initialize the tr2 TLS system.
- */
-void tr2tls_init(void);
-
-/*
- * Free all tr2 TLS resources.
- */
-void tr2tls_release(void);
-
-/*
- * Protected increment of an integer.
- */
-int tr2tls_locked_increment(int *p);
-
-/*
- * Capture the process start time and do nothing else.
- */
-void tr2tls_start_process_clock(void);
-
-#endif /* TR2_TLS_H */