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Subject[PATCH 13/20] perf pmu: Special case uncore_ prefix
Date
From: Andi Kleen <ak@linux.intel.com>

Special case uncore_ prefix in PMU match, to allow for shorter event
uncore specifications.

Before:

perf stat -a -e uncore_cbox/event=0x35,umask=0x1,filter_opc=0x19C/ sleep 1

After

perf stat -a -e cbox/event=0x35,umask=0x1,filter_opc=0x19C/ sleep 1

Committer tests:

# perf list uncore

List of pre-defined events (to be used in -e):

uncore_cbox_0/clockticks/ [Kernel PMU event]
uncore_cbox_1/clockticks/ [Kernel PMU event]
uncore_imc/data_reads/ [Kernel PMU event]
uncore_imc/data_writes/ [Kernel PMU event]

# perf stat -a -e cbox_0/clockticks/ sleep 1

Performance counter stats for 'system wide':

281,474,976,653,084 cbox_0/clockticks/

1.000870129 seconds time elapsed

#

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/20170320201711.14142-7-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/parse-events.y | 3 +++
1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 20935b17753d..04fd8c9af9f9 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -239,6 +239,9 @@ PE_NAME opt_event_config
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
char *name = pmu->name;

+ 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))
YYABORT;
--
2.9.3
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