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,
Agustin Vega-Frias <agustinv@codeaurora.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
linux-arm-kernel@lists.infradead.org,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Timur Tabi <timur@codeaurora.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 19/54] perf pmu: Support wildcards on pmu name in dynamic pmu events
Date: Thu, 8 Mar 2018 16:49:54 -0300 [thread overview]
Message-ID: <20180308195029.14991-20-acme@kernel.org> (raw)
In-Reply-To: <20180308195029.14991-1-acme@kernel.org>
From: Agustin Vega-Frias <agustinv@codeaurora.org>
Starting on v4.12 event parsing code for dynamic pmu events already
supports prefix-based matching of multiple pmus when creating dynamic
events. E.g., in a system with the following dynamic pmus:
mypmu_0
mypmu_1
mypmu_2
mypmu_4
passing mypmu/<config>/ as an event spec will result in the creation of
the event in all of the pmus. This change expands this matching through
the use of fnmatch so glob-like expressions can be used to create events
in multiple pmus. E.g., in the system described above if a user only
wants to create the event in mypmu_0 and mypmu_1, mypmu_[01]/<config>/
can be passed.
Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Timur Tabi <timur@codeaurora.org>
Change-Id: Icb25653fc5d5239c20f3bffdfdf4ab4c9c9bb20b
Link: http://lkml.kernel.org/r/1520454947-16977-1-git-send-email-agustinv@codeaurora.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-list.txt | 8 +++++++-
tools/perf/Documentation/perf-stat.txt | 13 +++++++++++++
tools/perf/util/parse-events.l | 2 +-
tools/perf/util/parse-events.y | 14 ++++++++++++--
4 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index e2a897ae3596..2549c34a7895 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -141,7 +141,13 @@ on the first memory controller on socket 0 of a Intel Xeon system
Each memory controller has its own PMU. Measuring the complete system
bandwidth would require specifying all imc PMUs (see perf list output),
-and adding the values together.
+and adding the values together. To simplify creation of multiple events,
+prefix and glob matching is supported in the PMU name, and the prefix
+'uncore_' is also ignored when performing the match. So the command above
+can be expanded to all memory controllers by using the syntaxes:
+
+ perf stat -C 0 -a imc/cas_count_read/,imc/cas_count_write/ -I 1000 ...
+ perf stat -C 0 -a *imc*/cas_count_read/,*imc*/cas_count_write/ -I 1000 ...
This example measures the combined core power every second
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 2b38e222016a..628026dbedc5 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -49,6 +49,13 @@ report::
parameters are defined by corresponding entries in
/sys/bus/event_source/devices/<pmu>/format/*
+ Note that the last two syntaxes support prefix and glob matching in
+ the PMU name to simplify creation of events accross multiple instances
+ of the same type of PMU in large systems (e.g. memory controller PMUs).
+ Multiple PMU instances are typical for uncore PMUs, so the prefix
+ 'uncore_' is also ignored when performing this match.
+
+
-i::
--no-inherit::
child tasks do not inherit counters
@@ -260,6 +267,12 @@ taskset.
--no-merge::
Do not merge results from same PMUs.
+When multiple events are created from a single event alias, stat will,
+by default, aggregate the event counts and show the result in a single
+row. This option disables that behavior and shows the individual events
+and counts. Aliases are listed immediately after the Kernel PMU events
+by perf list.
+
--smi-cost::
Measure SMI cost if msr/aperf/ and msr/smi/ events are supported.
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 655ecff636a8..a1a01b1ac8b8 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -175,7 +175,7 @@ bpf_source [^,{}]+\.c[a-zA-Z0-9._]*
num_dec [0-9]+
num_hex 0x[a-fA-F0-9]+
num_raw_hex [a-fA-F0-9]+
-name [a-zA-Z_*?][a-zA-Z0-9_*?.]*
+name [a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]]*
name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
/* If you add a modifier you need to update check_modifier() */
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index e81a20ea8d7d..dedf184b5bed 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -8,6 +8,7 @@
#define YYDEBUG 1
+#include <fnmatch.h>
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/types.h>
@@ -234,6 +235,10 @@ PE_NAME opt_event_config
if (parse_events_add_pmu(_parse_state, list, $1, $2)) {
struct perf_pmu *pmu = NULL;
int ok = 0;
+ char *pattern;
+
+ if (asprintf(&pattern, "%s*", $1) < 0)
+ YYABORT;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
char *name = pmu->name;
@@ -241,14 +246,19 @@ PE_NAME opt_event_config
if (!strncmp(name, "uncore_", 7) &&
strncmp($1, "uncore_", 7))
name += 7;
- if (!strncmp($1, name, strlen($1))) {
- if (parse_events_copy_term_list(orig_terms, &terms))
+ if (!fnmatch(pattern, name, 0)) {
+ if (parse_events_copy_term_list(orig_terms, &terms)) {
+ free(pattern);
YYABORT;
+ }
if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms))
ok++;
parse_events_terms__delete(terms);
}
}
+
+ free(pattern);
+
if (!ok)
YYABORT;
}
--
2.14.3
next prev parent reply other threads:[~2018-03-08 20:04 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-08 19:49 [GIT PULL 00/54] perf/core improvements and fixes Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 01/54] perf cgroup: Remove misplaced __maybe_unused Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 02/54] perf cgroup: Rename 'struct cgroup_sel' to 'struct cgroup' Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 03/54] perf cgroup: Introduce cgroup__delete() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 04/54] perf cgroup: Rename close_cgroup() to cgroup__put() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 05/54] perf cgroup: Introduce cgroup__get() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 06/54] perf cgroup: Introduce find_cgroup() method Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 07/54] perf cgroup: Introduce cgroup__new() out of open coded equivalent Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 08/54] perf sched: Move thread::shortname to thread_runtime Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 09/54] perf sched map: Re-annotate shortname if thread comm changed Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 10/54] perf record: Combine some auxtrace initialization into a single function Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 11/54] perf cgroup: Add evlist__findnew_cgroup() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 12/54] perf cgroup: Add evlist__add_default_cgroup() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 13/54] perf cgroup: Make the cgroup name be const char * Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 14/54] perf trace: Support setting cgroups as targets Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 15/54] perf auxtrace: Add missing parameters from kernel-doc comments Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 16/54] perf auxtrace: Rename some buffer-queuing functions Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 17/54] perf auxtrace: Make auxtrace_queues__add_buffer() return buffer_ptr Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 18/54] perf tools: Correct title markers for asciidoctor Arnaldo Carvalho de Melo
2018-03-08 19:49 ` Arnaldo Carvalho de Melo [this message]
2018-03-08 19:49 ` [PATCH 20/54] perf pmu: Display pmu name when printing unmerged events in stat Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 21/54] perf pmu: Auto-merge PMU events created by prefix or glob match Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 22/54] perf evlist: Store 'overwrite' in struct perf_mmap Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 23/54] perf mmap: Store mmap scope in struct perf_mmap() Arnaldo Carvalho de Melo
2018-03-08 19:49 ` [PATCH 24/54] perf mmap: Use the stored scope data in perf_mmap__push() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 25/54] perf mmap: Use the stored data in perf_mmap__read_event() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 26/54] perf mmap: Use stored 'overwrite' in perf_mmap__consume() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 27/54] perf mmap: Simplify perf_mmap__consume() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 28/54] perf mmap: Simplify perf_mmap__read_event() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 29/54] perf mmap: Simplify perf_mmap__read_init() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 30/54] perf intel-pt: Fix overlap detection to identify consecutive buffers correctly Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 31/54] perf intel-pt: Fix sync_switch Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 32/54] perf intel-pt: Fix error recovery from missing TIP packet Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 33/54] perf intel-pt: Fix timestamp following overflow Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 34/54] perf intel-pt/bts: In auxtrace_record__init_intel() evlist is never NULL Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 35/54] perf intel-pt: Get rid of intel_pt_use_buffer_pid_tid() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 36/54] perf intel-pt: Tidy old_buffer handling in intel_pt_get_trace() Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 37/54] perf intel-pt: Remove a check for sampling mode Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 38/54] perf intel-pt: Adjust overlap-checking to support " Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 39/54] perf annotate: Fix s390 target function disassembly Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 40/54] perf report: Fix the output for stdio events list Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 41/54] perf report: Display perf.data header info Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 42/54] perf record: Move machine variable down the function Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 43/54] perf record: Remove progname from struct record Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 44/54] perf tools: Add refcnt into struct mem_info Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 45/54] perf c2c: Use mem_info refcnt logic Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 46/54] perf tools: Add MEM_TOPOLOGY feature to perf data file Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 47/54] perf tools: Update tags with .cpp files Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 48/54] perf build: Add llvm/clang/cxx make tests into FEATURE_TESTS_EXTRA Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 49/54] perf build: Add llvm/clang make targets to FILES Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 50/54] perf build: Force llvm/clang test compile output to .make.output Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 51/54] perf report: Provide libtraceevent with a kernel symbol resolver Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 52/54] perf annotate: Support to display the IPC/Cycle in TUI mode Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 53/54] perf annotate: Handle s390 PC relative load and store instruction Arnaldo Carvalho de Melo
2018-03-08 19:50 ` [PATCH 54/54] perf tools: Update quipper information Arnaldo Carvalho de Melo
2018-03-09 7:29 ` [GIT PULL 00/54] perf/core improvements and fixes Ingo Molnar
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