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authorJiri Olsa <jolsa@kernel.org>2014-12-01 20:06:24 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-12-09 13:14:35 +0100
commit99ce8e9fce99147f865cda8a8e471900518c9a49 (patch)
tree3df52ba599da96ec305c0437c5324caee2359e8d
parentperf buildid cache: Fix -a segfault related to kcore handling (diff)
downloadlinux-99ce8e9fce99147f865cda8a8e471900518c9a49.tar.xz
linux-99ce8e9fce99147f865cda8a8e471900518c9a49.zip
perf tools: Add --buildid-dir option to set cache directory
Adding --buildid-dir to be able to set specific cache directory. It's going to be handy for buildid tests coming in shortly. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1417460789-13874-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/Documentation/perf.txt4
-rw-r--r--tools/perf/perf.c14
-rw-r--r--tools/perf/util/config.c8
-rw-r--r--tools/perf/util/util.h2
4 files changed, 22 insertions, 6 deletions
diff --git a/tools/perf/Documentation/perf.txt b/tools/perf/Documentation/perf.txt
index d240bb2e5b22..1e8e400b4493 100644
--- a/tools/perf/Documentation/perf.txt
+++ b/tools/perf/Documentation/perf.txt
@@ -18,6 +18,10 @@ OPTIONS
--debug verbose # sets verbose = 1
--debug verbose=2 # sets verbose = 2
+--buildid-dir::
+ Setup buildid cache directory. It has higher priority than
+ buildid.dir config file option.
+
DESCRIPTION
-----------
Performance counters for Linux are a new kernel-based subsystem
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 452a8474d29d..3700a7faca6c 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -200,6 +200,16 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
*envchanged = 1;
(*argv)++;
(*argc)--;
+ } else if (!strcmp(cmd, "--buildid-dir")) {
+ if (*argc < 2) {
+ fprintf(stderr, "No directory given for --buildid-dir.\n");
+ usage(perf_usage_string);
+ }
+ set_buildid_dir((*argv)[1]);
+ if (envchanged)
+ *envchanged = 1;
+ (*argv)++;
+ (*argc)--;
} else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) {
perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR));
fprintf(stderr, "dir: %s\n", debugfs_mountpoint);
@@ -499,7 +509,7 @@ int main(int argc, const char **argv)
}
if (!prefixcmp(cmd, "trace")) {
#ifdef HAVE_LIBAUDIT_SUPPORT
- set_buildid_dir();
+ set_buildid_dir(NULL);
setup_path();
argv[0] = "trace";
return cmd_trace(argc, argv, NULL);
@@ -514,7 +524,7 @@ int main(int argc, const char **argv)
argc--;
handle_options(&argv, &argc, NULL);
commit_pager_choice();
- set_buildid_dir();
+ set_buildid_dir(NULL);
if (argc > 0) {
if (!prefixcmp(argv[0], "--"))
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index c802236b2bfe..e18f653cd7db 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -539,12 +539,14 @@ static void check_buildid_dir_config(void)
perf_config(buildid_dir_command_config, &c);
}
-void set_buildid_dir(void)
+void set_buildid_dir(const char *dir)
{
- buildid_dir[0] = '\0';
+ if (dir)
+ scnprintf(buildid_dir, MAXPATHLEN-1, "%s", dir);
/* try config file */
- check_buildid_dir_config();
+ if (buildid_dir[0] == '\0')
+ check_buildid_dir_config();
/* default to $HOME/.debug */
if (buildid_dir[0] == '\0') {
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 419bee030f83..abc445ee4f60 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -153,7 +153,7 @@ extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)))
extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
extern int prefixcmp(const char *str, const char *prefix);
-extern void set_buildid_dir(void);
+extern void set_buildid_dir(const char *dir);
static inline const char *skip_prefix(const char *str, const char *prefix)
{