Em Thu, Nov 24, 2016 at 10:11:12AM +0900, Namhyung Kim escreveu: > The sched_switch event always captured from the scheduler function. So > it'd be great omit them from the callchain. This patch marks the > functions to be omitted by later patch.
I just reorderded this so that after applying 1 I could right away test it, i.e. 2/3 was applied first. - Arnaldo > Cc: David Ahern <[email protected]> > Signed-off-by: Namhyung Kim <[email protected]> > --- > tools/perf/builtin-sched.c | 21 +++++++++++++++++++++ > tools/perf/util/symbol.h | 1 + > 2 files changed, 22 insertions(+) > > diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c > index 829468defa07..cd14189d3943 100644 > --- a/tools/perf/builtin-sched.c > +++ b/tools/perf/builtin-sched.c > @@ -1965,7 +1965,28 @@ static bool is_idle_sample(struct perf_sched *sched, > > return false; > } > + > callchain_cursor_commit(cursor); > + > + while (true) { > + struct callchain_cursor_node *node; > + struct symbol *sym; > + > + node = callchain_cursor_current(cursor); > + if (node == NULL) > + break; > + > + sym = node->sym; > + if (sym && sym->name) { > + if (!strcmp(sym->name, "schedule") || > + !strcmp(sym->name, "__schedule") || > + !strcmp(sym->name, "preempt_schedule")) > + sym->ignore = 1; > + } > + > + callchain_cursor_advance(cursor); > + } > + > return false; > } > > diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h > index dec7e2d44885..1bcbefc0c325 100644 > --- a/tools/perf/util/symbol.h > +++ b/tools/perf/util/symbol.h > @@ -58,6 +58,7 @@ struct symbol { > u16 namelen; > u8 binding; > u8 idle:1; > + u8 ignore:1; > u8 arch_sym; > char name[0]; > }; > -- > 2.10.0
