[PATCH v4 5/5] arm64/perf: Extend event mask for ARMv8.1
From: Jan Glauber <hidden>
Date: 2016-02-18 16:50:49
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lkml
Subsystem:
arm pmu profiling and debugging, arm64 port (aarch64 architecture), performance events subsystem, the rest · Maintainers:
Will Deacon, Mark Rutland, Catalin Marinas, Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
ARMv8.1 increases the PMU event number space to 16 bit so increase the EVTYPE mask. Signed-off-by: Jan Glauber <redacted> --- arch/arm64/kernel/perf_event.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index c68fa98..8746781 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c@@ -419,8 +419,8 @@ static const struct attribute_group *armv8_pmuv3_attr_groups[] = { /* * PMXEVTYPER: Event selection reg */ -#define ARMV8_EVTYPE_MASK 0xc80003ff /* Mask for writable bits */ -#define ARMV8_EVTYPE_EVENT 0x3ff /* Mask for EVENT bits */ +#define ARMV8_EVTYPE_MASK 0xc800ffff /* Mask for writable bits */ +#define ARMV8_EVTYPE_EVENT 0xffff /* Mask for EVENT bits */ /* * Event filters for PMUv3
--
1.9.1