From 4cabc3d1cb6a46f581a2628d1d11c483d5f300e5 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 21 Aug 2013 16:47:26 -0700 Subject: tools/perf/stat: Add perf stat --transaction Add support to perf stat to print the basic transactional execution statistics: Total cycles, Cycles in Transaction, Cycles in aborted transsactions using the in_tx and in_tx_checkpoint qualifiers. Transaction Starts and Elision Starts, to compute the average transaction length. This is a reasonable overview over the success of the transactions. Also support architectures that have a transaction aborted cycles counter like POWER8. Since that is awkward to handle in the kernel abstract handle both cases here. Enable with a new --transaction / -T option. This requires measuring these events in a group, since they depend on each other. This is implemented by using TM sysfs events exported by the kernel Signed-off-by: Andi Kleen Acked-by: Arnaldo Carvalho de Melo Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1377128846-977-5-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar --- tools/perf/util/pmu.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'tools/perf/util/pmu.c') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index bc9d8069d376..64362fe45b71 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -637,3 +637,19 @@ void print_pmu_events(const char *event_glob, bool name_only) printf("\n"); free(aliases); } + +bool pmu_have_event(const char *pname, const char *name) +{ + struct perf_pmu *pmu; + struct perf_pmu_alias *alias; + + pmu = NULL; + while ((pmu = perf_pmu__scan(pmu)) != NULL) { + if (strcmp(pname, pmu->name)) + continue; + list_for_each_entry(alias, &pmu->aliases, list) + if (!strcmp(alias->name, name)) + return true; + } + return false; +} -- cgit v1.2.3