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perf jevents: Add support for an extra directory level

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Currently only upto a level 2 directory is supported, in form
vendor/platform.

Add support for a further level, to support vendor/platform
sub-directories in future, which will be vendor/platform/cpu and
vendor/platform/sys.

Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lore.kernel.org/lkml/1607080216-36968-2-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
John Garry 2020-12-04 19:10:07 +08:00 committed by Arnaldo Carvalho de Melo
parent 456ef4c11c
commit 4853f1caa4
1 changed files with 8 additions and 3 deletions
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11
tools/perf/pmu-events/jevents.c
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@ -978,15 +978,20 @@ static int process_one_file(const char *fpath, const struct stat *sb,
int level = ftwbuf->level; int level = ftwbuf->level;
int err = 0; int err = 0;
if (level == 2 && is_dir) { if (level >= 2 && is_dir) {
int count = 0;
/* /*
* For level 2 directory, bname will include parent name, * For level 2 directory, bname will include parent name,
* like vendor/platform. So search back from platform dir * like vendor/platform. So search back from platform dir
* to find this. * to find this.
* Something similar for level 3 directory, but we're a PMU
* category folder, like vendor/platform/cpu.
*/ */
bname = (char *) fpath + ftwbuf->base - 2; bname = (char *) fpath + ftwbuf->base - 2;
for (;;) { for (;;) {
if (*bname == '/') if (*bname == '/')
count++;
if (count == level - 1)
break; break;
bname--; bname--;
} }
@ -999,13 +1004,13 @@ static int process_one_file(const char *fpath, const struct stat *sb,
level, sb->st_size, bname, fpath); level, sb->st_size, bname, fpath);
/* base dir or too deep */ /* base dir or too deep */
if (level == 0 || level > 3) if (level == 0 || level > 4)
return 0; return 0;
/* model directory, reset topic */ /* model directory, reset topic */
if ((level == 1 && is_dir && is_leaf_dir(fpath)) || if ((level == 1 && is_dir && is_leaf_dir(fpath)) ||
(level == 2 && is_dir)) { (level >= 2 && is_dir && is_leaf_dir(fpath))) {
if (close_table) if (close_table)
print_events_table_suffix(eventsfp); print_events_table_suffix(eventsfp);