From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 14/41] perf record: Support direct --user-regs arguments
Date: Tue, 12 Sep 2017 12:10:02 -0300 [thread overview]
Message-ID: <20170912151029.6612-15-acme@kernel.org> (raw)
In-Reply-To: <20170912151029.6612-1-acme@kernel.org>
From: Andi Kleen <ak@linux.intel.com>
USER_REGS can currently only collected implicitely with call graph
recording. Sometimes it is useful to see them separately, and filter
them. Add a new --user-regs option to record that is similar to
--intr-regs, but acts on user regs.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170905170029.19722-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-record.txt | 2 ++
tools/perf/builtin-record.c | 3 +++
tools/perf/perf.h | 1 +
tools/perf/util/evsel.c | 7 ++++++-
4 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index e397453e5a46..68a1ffb0a8a5 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -377,6 +377,8 @@ symbolic names, e.g. on x86, ax, si. To list the available registers use
--intr-regs=\?. To name registers, pass a comma separated list such as
--intr-regs=ax,bx. The list of register is architecture dependent.
+--user-regs::
+Capture user registers at sample time. Same arguments as -I.
--running-time::
Record running and enabled time for read events (:S)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 56f8142ff97f..9b379f3a3d99 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1643,6 +1643,9 @@ static struct option __record_options[] = {
OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register",
"sample selected machine registers on interrupt,"
" use -I ? to list register names", parse_regs),
+ OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register",
+ "sample selected machine registers on interrupt,"
+ " use -I ? to list register names", parse_regs),
OPT_BOOLEAN(0, "running-time", &record.opts.running_time,
"Record running/enabled time of read (:S) events"),
OPT_CALLBACK('k', "clockid", &record.opts,
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index dc442ba21bf6..fbb0a9cd0ac6 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -65,6 +65,7 @@ struct record_opts {
unsigned int user_freq;
u64 branch_stack;
u64 sample_intr_regs;
+ u64 sample_user_regs;
u64 default_interval;
u64 user_interval;
size_t auxtrace_snapshot_size;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 4bb89373eb52..7389746c0dc4 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -678,7 +678,7 @@ void perf_evsel__config_callchain(struct perf_evsel *evsel,
if (!function) {
perf_evsel__set_sample_bit(evsel, REGS_USER);
perf_evsel__set_sample_bit(evsel, STACK_USER);
- attr->sample_regs_user = PERF_REGS_MASK;
+ attr->sample_regs_user |= PERF_REGS_MASK;
attr->sample_stack_user = param->dump_size;
attr->exclude_callchain_user = 1;
} else {
@@ -931,6 +931,11 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
perf_evsel__set_sample_bit(evsel, REGS_INTR);
}
+ if (opts->sample_user_regs) {
+ attr->sample_regs_user |= opts->sample_user_regs;
+ perf_evsel__set_sample_bit(evsel, REGS_USER);
+ }
+
if (target__has_cpu(&opts->target) || opts->sample_cpu)
perf_evsel__set_sample_bit(evsel, CPU);
--
2.13.5
next prev parent reply other threads:[~2017-09-12 15:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-12 15:09 [GIT PULL 00/41] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 01/41] perf sched timehist: Add pid and tid options Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 02/41] perf tools: Support weak groups in 'perf stat' Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 03/41] perf vendor events: Support metric_group and no event name in JSON parser Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 04/41] perf stat: Factor out generic metric printing Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 05/41] perf stat: Print generic metric header even for failed expressions Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 06/41] perf pmu: Extract function to get JSON alias map Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 07/41] perf stat: Support JSON metrics in perf stat Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 08/41] perf list: Add metric groups to perf list Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 09/41] perf stat: Don't use ctx for saved values lookup Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 10/41] perf stat: Support duration_time for metrics Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 11/41] perf stat: Hide internal duration_time counter Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 12/41] perf stat: Update walltime_nsecs_stats in interval mode Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 13/41] tools include linux: Guard against redefinition of some macros Arnaldo Carvalho de Melo
2017-09-12 15:10 ` Arnaldo Carvalho de Melo [this message]
2017-09-12 15:10 ` [PATCH 15/41] perf script: Support user regs Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 16/41] perf tests: Fix compile when libunwind's unwind.h is available Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 17/41] tools lib api: Fix make DEBUG=1 build Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 18/41] perf tools: Open perf.data with O_CLOEXEC flag Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 19/41] perf tools: Add python-clean target Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 20/41] perf ui progress: Make sure we always define step value Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 21/41] perf ui progress: Fix progress update Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 22/41] perf ui progress: Add ui specific init function Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 23/41] perf ui progress: Add size info into progress bar Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 24/41] perf tools: Use scandir() to replace readdir() Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 25/41] perf config: Check not only section->from_system_config but also item's Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 26/41] perf config: Write a config file just once Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 27/41] perf config: Allow creating empty config set for config file autogeneration Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 28/41] perf tools: Make copyfile_offset() static Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 29/41] perf tools: Support running perf binaries with a dash in their name Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 30/41] perf stat: Fall weak group back even for EBADF Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 31/41] perf vendor events: Add JSON metrics for Broadwell Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 32/41] perf vendor events: Add JSON metrics for Skylake Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 33/41] perf vendor events: Add JSON metrics for Sandy Bridge Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 34/41] perf vendor events: Add JSON metrics for Sandy Bridge EP Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 35/41] perf vendor events: Add JSON metrics for Ivy Bridge Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 36/41] perf vendor events: Add JSON metrics for Haswell Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 37/41] perf vendor events: Add JSON metrics for Ivy Town Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 38/41] perf vendor events: Add JSON metrics for Haswell EP Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 39/41] perf vendor events: Add JSON metrics for Broadwell Server Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 40/41] perf vendor events: Add JSON metrics for Broadwell DE Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 41/41] perf vendor events: Add JSON metrics for Skylake server Arnaldo Carvalho de Melo
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