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Message-Id: <20200115222949.7247-1-kim.phillips@amd.com>
Date: Wed, 15 Jan 2020 16:29:48 -0600
From: Kim Phillips <kim.phillips@....com>
To: Arnaldo Carvalho de Melo <acme@...hat.com>, kim.phillips@....com
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Cong Wang <xiyou.wangcong@...il.com>,
Andi Kleen <ak@...ux.intel.com>,
Jin Yao <yao.jin@...ux.intel.com>,
Kan Liang <kan.liang@...ux.intel.com>,
Song Liu <songliubraving@...com>,
Davidlohr Bueso <dave@...olabs.net>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] perf symbols: Update the list of kernel idle symbols
"acpi_idle_do_entry", "acpi_processor_ffh_cstate_enter", and "idle_cpu"
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.
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Cong Wang <xiyou.wangcong@...il.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Jin Yao <yao.jin@...ux.intel.com>
Cc: Kan Liang <kan.liang@...ux.intel.com>
Cc: Kim Phillips <kim.phillips@....com>
Cc: Song Liu <songliubraving@...com>
Cc: Davidlohr Bueso <dave@...olabs.net>
Cc: linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Kim Phillips <kim.phillips@....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 3b379b1296f1..f3120c4f47ad 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -635,9 +635,12 @@ int modules__parse(const char *filename, void *arg,
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",
--
2.24.1
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