diff options
| author | James Clark <james.clark@arm.com> | 2023-12-11 16:13:18 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-12-12 09:46:22 +0000 |
| commit | f6da86969a3c284466ab6080764b2ed91689f262 (patch) | |
| tree | 5b9b89287e3d9e7e6806d4260a0d60776fbbf4f5 /drivers/perf | |
| parent | 3115ee021bfb04efde2e96507bfcc1330261a6a1 (diff) | |
arm: pmu: Share user ABI format mechanism with SPE
This mechanism makes it much easier to define and read new attributes
so move it to the arm_pmu.h header so that it can be shared. At the same
time update the existing format attributes to use it.
GENMASK has to be changed to GENMASK_ULL because the config fields are
64 bits even on arm32 where this will also be used now.
Signed-off-by: James Clark <james.clark@arm.com>
Link: https://lore.kernel.org/r/20231211161331.1277825-7-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/arm_pmuv3.c | 21 | ||||
| -rw-r--r-- | drivers/perf/arm_spe_pmu.c | 22 |
2 files changed, 16 insertions, 27 deletions
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index 441bf73ee3d5..8a573db81da1 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -299,20 +299,31 @@ static const struct attribute_group armv8_pmuv3_events_attr_group = { .is_visible = armv8pmu_event_attr_is_visible, }; -PMU_FORMAT_ATTR(event, "config:0-15"); -PMU_FORMAT_ATTR(long, "config1:0"); -PMU_FORMAT_ATTR(rdpmc, "config1:1"); +/* User ABI */ +#define ATTR_CFG_FLD_event_CFG config +#define ATTR_CFG_FLD_event_LO 0 +#define ATTR_CFG_FLD_event_HI 15 +#define ATTR_CFG_FLD_long_CFG config1 +#define ATTR_CFG_FLD_long_LO 0 +#define ATTR_CFG_FLD_long_HI 0 +#define ATTR_CFG_FLD_rdpmc_CFG config1 +#define ATTR_CFG_FLD_rdpmc_LO 1 +#define ATTR_CFG_FLD_rdpmc_HI 1 + +GEN_PMU_FORMAT_ATTR(event); +GEN_PMU_FORMAT_ATTR(long); +GEN_PMU_FORMAT_ATTR(rdpmc); static int sysctl_perf_user_access __read_mostly; static bool armv8pmu_event_is_64bit(struct perf_event *event) { - return event->attr.config1 & 0x1; + return ATTR_CFG_GET_FLD(&event->attr, long); } static bool armv8pmu_event_want_user_access(struct perf_event *event) { - return event->attr.config1 & 0x2; + return ATTR_CFG_GET_FLD(&event->attr, rdpmc); } static struct attribute *armv8_pmuv3_format_attrs[] = { diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c index d2b0cbf0e0c4..b622d75d8c9e 100644 --- a/drivers/perf/arm_spe_pmu.c +++ b/drivers/perf/arm_spe_pmu.c @@ -206,28 +206,6 @@ static const struct attribute_group arm_spe_pmu_cap_group = { #define ATTR_CFG_FLD_inv_event_filter_LO 0 #define ATTR_CFG_FLD_inv_event_filter_HI 63 -/* Why does everything I do descend into this? */ -#define __GEN_PMU_FORMAT_ATTR(cfg, lo, hi) \ - (lo) == (hi) ? #cfg ":" #lo "\n" : #cfg ":" #lo "-" #hi - -#define _GEN_PMU_FORMAT_ATTR(cfg, lo, hi) \ - __GEN_PMU_FORMAT_ATTR(cfg, lo, hi) - -#define GEN_PMU_FORMAT_ATTR(name) \ - PMU_FORMAT_ATTR(name, \ - _GEN_PMU_FORMAT_ATTR(ATTR_CFG_FLD_##name##_CFG, \ - ATTR_CFG_FLD_##name##_LO, \ - ATTR_CFG_FLD_##name##_HI)) - -#define _ATTR_CFG_GET_FLD(attr, cfg, lo, hi) \ - ((((attr)->cfg) >> lo) & GENMASK(hi - lo, 0)) - -#define ATTR_CFG_GET_FLD(attr, name) \ - _ATTR_CFG_GET_FLD(attr, \ - ATTR_CFG_FLD_##name##_CFG, \ - ATTR_CFG_FLD_##name##_LO, \ - ATTR_CFG_FLD_##name##_HI) - GEN_PMU_FORMAT_ATTR(ts_enable); GEN_PMU_FORMAT_ATTR(pa_enable); GEN_PMU_FORMAT_ATTR(pct_enable); |