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Subject[tip: perf/urgent] perf symbols: Update the list of kernel idle symbols
The following commit has been merged into the perf/urgent branch of tip:

Commit-ID: 0e71459afcbbf69e92a65085c45515d3f3f02c31
Gitweb: https://git.kernel.org/tip/0e71459afcbbf69e92a65085c45515d3f3f02c31
Author: Kim Phillips <kim.phillips@amd.com>
AuthorDate: Fri, 07 Feb 2020 17:06:12 -06:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Mon, 10 Feb 2020 16:30:13 -03:00

perf symbols: Update the list of kernel idle symbols

The "acpi_idle_do_entry", "acpi_processor_ffh_cstate_enter", and
"idle_cpu" symbols appear in 'perf top' output, at least on AMD systems.

Add them to perf's idle_symbols list, so they don't dominate 'perf top'
output.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Song Liu <songliubraving@fb.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200207230613.26709-2-kim.phillips@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/symbol.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 3b379b1..f3120c4 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -635,9 +635,12 @@ out:
static bool symbol__is_idle(const char *name)
{
const char * const idle_symbols[] = {
+ "acpi_idle_do_entry",
+ "acpi_processor_ffh_cstate_enter",
"arch_cpu_idle",
"cpu_idle",
"cpu_startup_entry",
+ "idle_cpu",
"intel_idle",
"default_idle",
"native_safe_halt",
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