diff options
| author | Oliver Upton <oliver.upton@linux.dev> | 2025-03-05 12:26:38 -0800 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2025-03-11 12:54:29 -0700 |
| commit | 1e7dcbfa4b7cddfbe1cde6067d135f5452692256 (patch) | |
| tree | 4043a2c41c7037f10a11899deb4e891db259765f /include/linux/perf | |
| parent | bed9b8ec8c71135c59004d12658d8affe232f27e (diff) | |
KVM: arm64: Remap PMUv3 events onto hardware
Map PMUv3 event IDs onto hardware, if the driver exposes such a helper.
This is expected to be quite rare, and only useful for non-PMUv3 hardware.
Tested-by: Janne Grunau <j@jannau.net>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250305202641.428114-12-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'include/linux/perf')
| -rw-r--r-- | include/linux/perf/arm_pmu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 4b5b83677e3f..7ce6dea5bfa9 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -100,6 +100,10 @@ struct arm_pmu { void (*stop)(struct arm_pmu *); void (*reset)(void *); int (*map_event)(struct perf_event *event); + /* + * Called by KVM to map the PMUv3 event space onto non-PMUv3 hardware. + */ + int (*map_pmuv3_event)(unsigned int eventsel); DECLARE_BITMAP(cntr_mask, ARMPMU_MAX_HWEVENTS); bool secure_access; /* 32-bit ARM only */ #define ARMV8_PMUV3_MAX_COMMON_EVENTS 0x40 |