perf arm-spe: Support multiple Arm SPE PMUs

A platform can have more than one Arm SPE PMU. For example, a system
with multiple clusters may have each cluster enabled with its own Arm
SPE instance. In such case, the PMU devices will be named 'arm_spe_0',
'arm_spe_1', and so on.

Currently, the tool only supports 'arm_spe_0'. This commit extends
support to multiple Arm SPE PMUs by detecting the substring 'arm_spe_'.

Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: John Garry <john.g.garry@oracle.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20240706152035.86983-2-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c
index 6b544ed..1c9541d 100644 (file)
--- a/tools/perf/arch/arm/util/pmu.c
+++ b/tools/perf/arch/arm/util/pmu.c
@@ -30,7 +30,7 @@ void perf_pmu__arch_init(struct perf_pmu *pmu)
                pmu->selectable = true;
                pmu->is_uncore = false;
                pmu->perf_event_attr_init_default = arm_spe_pmu_default_config;
-               if (!strcmp(pmu->name, "arm_spe_0"))
+               if (strstarts(pmu->name, "arm_spe_"))
                        pmu->mem_events = perf_mem_events_arm;
        } else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {
                pmu->selectable = true;