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@xxxxxxx>
---
drivers/perf/arm_pmuv3.c | 21 ++++++++++++++++-----
drivers/perf/arm_spe_pmu.c | 22 ----------------------
include/linux/perf/arm_pmu.h | 22 ++++++++++++++++++++++
3 files changed, 38 insertions(+), 27 deletions(-)
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index 16ef8448afc0..84b15c0892d9 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -295,20 +295,31 @@ 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);
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 143fbc10ecfe..337f01674b38 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -189,4 +189,26 @@ void armpmu_free_irq(int irq, int cpu);
#define ARMV8_SPE_PDEV_NAME "arm,spe-v1"
#define ARMV8_TRBE_PDEV_NAME "arm,trbe"
+/* 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_ULL(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)
+
#endif /* __ARM_PMU_H__ */
--
2.34.1
