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perf report: Enable finding kernel inline functions 

Currently perf supports a mode to query inline stack. It works well for
finding user space inline functions but it doesn't work for kernel ones,
due to some unnecessary check.

This patch removes these unnecessary checks. Now kernel inline functions
can be reported.

For example:

  perf report --inline -g func --stdio

  |--46.19%--do_huge_pmd_anonymous_page
  |          do_huge_pmd_anonymous_page (inline)
  |          __do_huge_pmd_anonymous_page (inline)
  |          __SetPageUptodate (inline)
  |          __set_bit (inline)

  The result is compared with the output of addr2line. They match.

Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1500409892-15904-1-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2017-07-19 04:31:32 +08:00 committed by Arnaldo Carvalho de Melo
parent 1f63139c3f
commit 8b8ef2d74d
2 changed files with 0 additions and 6 deletions
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3
tools/perf/ui/browsers/hists.c
View File

@ -166,9 +166,6 @@ static struct inline_node *inline_node__create(struct map *map, u64 ip)
if (dso == NULL)
return NULL;
if (dso->kernel != DSO_TYPE_USER)
return NULL;
node = dso__parse_addr_inlines(dso,
map__rip_2objdump(map, ip));

3
tools/perf/ui/stdio/hist.c
View File

@ -35,9 +35,6 @@ static size_t inline__fprintf(struct map *map, u64 ip, int left_margin,
if (dso == NULL)
return 0;
if (dso->kernel != DSO_TYPE_USER)
return 0;
node = dso__parse_addr_inlines(dso,
map__rip_2objdump(map, ip));
if (node == NULL)