diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-09-29 09:43:46 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-29 09:43:46 +0200 |
| commit | 9c17dbc6eb73bdd8a6aaea1baefd37ff78d86148 (patch) | |
| tree | 5b303f98bc8898f26d2445138904f2fb14403a2d /tools/lib/api | |
| parent | 18ab2cd3ee9d52dc64c5ae984146a261a328c4e8 (diff) | |
| parent | e637d17757a10732fa5d573c18f20b3cd4d31245 (diff) | |
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
- Accept a zero --itrace period, meaning "as often as possible". In the case
of Intel PT that is the same as a period of 1 and a unit of 'instructions'
(i.e. --itrace=i1i). (Adrian Hunter)
- Harmonize itrace's synthesized callchains with the existing --max-stack
tool option. (Adrian Hunter)
- Allow time to be displayed in nanoseconds in 'perf script'. (Adrian Hunter)
- Fix potential infinite loop when handling Intel PT timestamps. (Adrian Hunter)
- Slighly improve Intel PT debug logging. (Adrian Hunter)
- Warn when AUX data has been lost, just like when processing PERF_RECORD_LOST.
(Adrian Hunter)
- Further document export-to-postgresql.py script. (Adrian Hunter)
- Add option to synthesize branch stack from auxtrace data. (Adrian Hunter)
- Use equivalent logic to avoid using dso->kernel. (Arnaldo Carvalho de Melo)
- Show proper error messages when parsing bad terms for hw/sw events. (He Kuang)
- Tracepoint event parsing improvements. (He Kuang)
- Store tracing mountpoint for better error message. (Jiri Olsa)
- Add fixdep to tools/build, bringing it closer to the kernel counterpart, from
where it is being lifted. (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/lib/api')
| -rw-r--r-- | tools/lib/api/Makefile | 6 | ||||
| -rw-r--r-- | tools/lib/api/fs/tracing_path.c | 13 |
2 files changed, 7 insertions, 12 deletions
diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile index fe1b02c2c95b..d85904dc9b38 100644 --- a/tools/lib/api/Makefile +++ b/tools/lib/api/Makefile @@ -21,12 +21,14 @@ CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 RM = rm -f -build := -f $(srctree)/tools/build/Makefile.build dir=. obj API_IN := $(OUTPUT)libapi-in.o +all: + export srctree OUTPUT CC LD CFLAGS V +include $(srctree)/tools/build/Makefile.include -all: $(LIBFILE) +all: fixdep $(LIBFILE) $(API_IN): FORCE @$(MAKE) $(build)=libapi diff --git a/tools/lib/api/fs/tracing_path.c b/tools/lib/api/fs/tracing_path.c index 38aca2dd1946..0406a7d5c891 100644 --- a/tools/lib/api/fs/tracing_path.c +++ b/tools/lib/api/fs/tracing_path.c @@ -12,12 +12,14 @@ #include "tracing_path.h" +char tracing_mnt[PATH_MAX + 1] = "/sys/kernel/debug"; char tracing_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing"; char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events"; static void __tracing_path_set(const char *tracing, const char *mountpoint) { + snprintf(tracing_mnt, sizeof(tracing_mnt), "%s", mountpoint); snprintf(tracing_path, sizeof(tracing_path), "%s/%s", mountpoint, tracing); snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s%s", @@ -109,19 +111,10 @@ static int strerror_open(int err, char *buf, size_t size, const char *filename) "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'"); break; case EACCES: { - const char *mountpoint = debugfs__mountpoint(); - - if (!access(mountpoint, R_OK) && strncmp(filename, "tracing/", 8) == 0) { - const char *tracefs_mntpoint = tracefs__mountpoint(); - - if (tracefs_mntpoint) - mountpoint = tracefs__mountpoint(); - } - snprintf(buf, size, "Error:\tNo permissions to read %s/%s\n" "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n", - tracing_events_path, filename, mountpoint); + tracing_events_path, filename, tracing_mnt); } break; default: |