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perf mem: Clean up perf_mem_event__supported()

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For some ARCHs, e.g., ARM and AMD, to get the availability of the
mem-events, perf checks the existence of a specific PMU. For the other
ARCHs, e.g., Intel and Power, perf has to check the existence of some
specific events.

The current perf only iterates the mem-events-supported PMUs. It's not
required to check the existence of a specific PMU anymore.

Rename sysfs_name to event_name, which stores the specific mem-events.
Perf only needs to check those events for the availability of the
mem-events.

Rename perf_mem_event__supported to perf_pmu__mem_events_supported.

Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Ravi Bangoria <ravi.bangoria@amd.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: james.clark@arm.com
Cc: will@kernel.org
Cc: mike.leach@linaro.org
Cc: renyu.zj@linux.alibaba.com
Cc: yuhaixin.yhx@linux.alibaba.com
Cc: tmricht@linux.ibm.com
Cc: atrajeev@linux.vnet.ibm.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: john.g.garry@oracle.com
Link: https://lore.kernel.org/r/20240123185036.3461837-5-kan.liang@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Kan Liang 2024-01-23 10:50:33 -08:00 committed by Namhyung Kim
parent abbdd79b78
commit db95c2ce9b
5 changed files with 31 additions and 29 deletions
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8
tools/perf/arch/arm64/util/mem-events.c
View File

@ -3,10 +3,10 @@
#include "util/mem-events.h"
#include "mem-events.h"
#define E(t, n, s, l, a) { .tag = t, .name = n, .sysfs_name = s, .ldlat = l, .aux_event = a }
#define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat = l, .aux_event = a }
struct perf_mem_event perf_mem_events_arm[PERF_MEM_EVENTS__MAX] = {
E("spe-load", "%s/ts_enable=1,pa_enable=1,load_filter=1,store_filter=0,min_latency=%u/", "arm_spe_0", true, 0),
E("spe-store", "%s/ts_enable=1,pa_enable=1,load_filter=0,store_filter=1/", "arm_spe_0", false, 0),
E("spe-ldst", "%s/ts_enable=1,pa_enable=1,load_filter=1,store_filter=1,min_latency=%u/", "arm_spe_0", true, 0),
E("spe-load", "%s/ts_enable=1,pa_enable=1,load_filter=1,store_filter=0,min_latency=%u/", NULL, true, 0),
E("spe-store", "%s/ts_enable=1,pa_enable=1,load_filter=0,store_filter=1/", NULL, false, 0),
E("spe-ldst", "%s/ts_enable=1,pa_enable=1,load_filter=1,store_filter=1,min_latency=%u/", NULL, true, 0),
};

8
tools/perf/arch/powerpc/util/mem-events.c
View File

@ -3,10 +3,10 @@
#include "util/mem-events.h"
#include "mem-events.h"
#define E(t, n, s, l, a) { .tag = t, .name = n, .sysfs_name = s, .ldlat = l, .aux_event = a }
#define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat = l, .aux_event = a }
struct perf_mem_event perf_mem_events_power[PERF_MEM_EVENTS__MAX] = {
E("ldlat-loads", "%s/mem-loads/", "cpu/events/mem-loads", false, 0),
E("ldlat-stores", "%s/mem-stores/", "cpu/events/mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
E("ldlat-loads", "%s/mem-loads/", "mem-loads", false, 0),
E("ldlat-stores", "%s/mem-stores/", "mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
};

20
tools/perf/arch/x86/util/mem-events.c
View File

@ -9,24 +9,24 @@
#define MEM_LOADS_AUX 0x8203
#define E(t, n, s, l, a) { .tag = t, .name = n, .sysfs_name = s, .ldlat = l, .aux_event = a }
#define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat = l, .aux_event = a }
struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads", true, 0),
E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "mem-loads", true, 0),
E("ldlat-stores", "%s/mem-stores/P", "mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
};
struct perf_mem_event perf_mem_events_intel_aux[PERF_MEM_EVENTS__MAX] = {
E("ldlat-loads", "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P", "%s/events/mem-loads", true, MEM_LOADS_AUX),
E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
E("ldlat-loads", "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P", "mem-loads", true, MEM_LOADS_AUX),
E("ldlat-stores", "%s/mem-stores/P", "mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
};
struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
E(NULL, NULL, NULL, false, 0),
E(NULL, NULL, NULL, false, 0),
E("mem-ldst", "%s//", "ibs_op", false, 0),
E(NULL, NULL, NULL, false, 0),
E(NULL, NULL, NULL, false, 0),
E("mem-ldst", "%s//", NULL, false, 0),
};
bool is_mem_loads_aux_event(struct evsel *leader)

22
tools/perf/util/mem-events.c
View File

@ -17,12 +17,12 @@
unsigned int perf_mem_events__loads_ldlat = 30;
#define E(t, n, s, l, a) { .tag = t, .name = n, .sysfs_name = s, .ldlat = l, .aux_event = a }
#define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat = l, .aux_event = a }
struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "cpu/events/mem-loads", true, 0),
E("ldlat-stores", "%s/mem-stores/P", "cpu/events/mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "mem-loads", true, 0),
E("ldlat-stores", "%s/mem-stores/P", "mem-stores", false, 0),
E(NULL, NULL, NULL, false, 0),
};
#undef E
@ -151,15 +151,17 @@ int perf_pmu__mem_events_parse(struct perf_pmu *pmu, const char *str)
return -1;
}
static bool perf_mem_event__supported(const char *mnt, struct perf_pmu *pmu,
static bool perf_pmu__mem_events_supported(const char *mnt, struct perf_pmu *pmu,
struct perf_mem_event *e)
{
char sysfs_name[100];
char path[PATH_MAX];
struct stat st;
scnprintf(sysfs_name, sizeof(sysfs_name), e->sysfs_name, pmu->name);
scnprintf(path, PATH_MAX, "%s/devices/%s", mnt, sysfs_name);
if (!e->event_name)
return true;
scnprintf(path, PATH_MAX, "%s/devices/%s/events/%s", mnt, pmu->name, e->event_name);
return !stat(path, &st);
}
@ -182,7 +184,7 @@ int perf_pmu__mem_events_init(struct perf_pmu *pmu)
if (!e->tag)
continue;
e->supported |= perf_mem_event__supported(mnt, pmu, e);
e->supported |= perf_pmu__mem_events_supported(mnt, pmu, e);
if (e->supported)
found = true;
}
@ -234,7 +236,7 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
} else {
const char *s = perf_pmu__mem_events_name(j, pmu);
if (!perf_mem_event__supported(mnt, pmu, e))
if (!perf_pmu__mem_events_supported(mnt, pmu, e))
continue;
rec_argv[i++] = "-e";

2
tools/perf/util/mem-events.h
View File

@ -18,7 +18,7 @@ struct perf_mem_event {
u32 aux_event;
const char *tag;
const char *name;
const char *sysfs_name;
const char *event_name;
};
struct mem_info {