Messages in this thread Patch in this message | | | From | Anshuman Khandual <> | Subject | [PATCH] driver: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally | Date | Mon, 9 Oct 2023 13:26:31 +0530 |
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PMMIR_EL1 needs to be captured in 'armpmu->reg_pmmir', for all appropriate PMU version implementations where the register is available and reading it is valid . Hence checking for bus slot event presence is redundant and can be dropped.
Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- This applies on v6.6-rc5. drivers/perf/arm_pmuv3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index 1e72b486c033..9fc1b6da5106 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -1129,7 +1129,7 @@ static void __armv8pmu_probe_pmu(void *info) pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS); /* store PMMIR register for sysfs */ - if (is_pmuv3p4(pmuver) && (pmceid_raw[1] & BIT(31))) + if (is_pmuv3p4(pmuver)) cpu_pmu->reg_pmmir = read_pmmir(); else cpu_pmu->reg_pmmir = 0; -- 2.25.1
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