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perf mem: Add mem_events into the supported perf_pmu
With the mem_events, perf doesn't need to read sysfs for each PMU to find the mem-events-supported PMU. The patch also makes it possible to clean up the related __weak functions later. The patch is only to add the mem_events into the perf_pmu for all ARCHs. It will be used in the later cleanup patches. Reviewed-by: Ian Rogers <irogers@google.com> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Tested-by: Ravi Bangoria <ravi.bangoria@amd.com> Tested-by: Leo Yan <leo.yan@linaro.org> Tested-by: Kajol Jain <kjain@linux.ibm.com> Suggested-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Kan Liang <kan.liang@linux.intel.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/20240123185036.3461837-2-kan.liang@linux.intel.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
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68f87f24f9
commit
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10 changed files with 44 additions and 7 deletions
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@ -13,6 +13,7 @@
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#include "hisi-ptt.h"
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#include "../../../util/pmu.h"
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#include "../../../util/cs-etm.h"
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#include "../../arm64/util/mem-events.h"
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void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
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{
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@ -26,6 +27,8 @@ void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
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pmu->selectable = true;
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pmu->is_uncore = false;
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pmu->perf_event_attr_init_default = arm_spe_pmu_default_config;
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if (!strcmp(pmu->name, "arm_spe_0"))
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pmu->mem_events = perf_mem_events_arm;
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} else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {
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pmu->selectable = true;
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#endif
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@ -1,10 +1,11 @@
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// SPDX-License-Identifier: GPL-2.0
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#include "map_symbol.h"
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#include "util/map_symbol.h"
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#include "util/mem-events.h"
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#include "mem-events.h"
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#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
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static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
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struct perf_mem_event perf_mem_events_arm[PERF_MEM_EVENTS__MAX] = {
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E("spe-load", "arm_spe_0/ts_enable=1,pa_enable=1,load_filter=1,store_filter=0,min_latency=%u/", "arm_spe_0"),
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E("spe-store", "arm_spe_0/ts_enable=1,pa_enable=1,load_filter=0,store_filter=1/", "arm_spe_0"),
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E("spe-ldst", "arm_spe_0/ts_enable=1,pa_enable=1,load_filter=1,store_filter=1,min_latency=%u/", "arm_spe_0"),
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@ -17,7 +18,7 @@ struct perf_mem_event *perf_mem_events__ptr(int i)
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if (i >= PERF_MEM_EVENTS__MAX)
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return NULL;
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return &perf_mem_events[i];
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return &perf_mem_events_arm[i];
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}
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const char *perf_mem_events__name(int i, const char *pmu_name __maybe_unused)
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7
tools/perf/arch/arm64/util/mem-events.h
Normal file
7
tools/perf/arch/arm64/util/mem-events.h
Normal file
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@ -0,0 +1,7 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ARM64_MEM_EVENTS_H
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#define _ARM64_MEM_EVENTS_H
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extern struct perf_mem_event perf_mem_events_arm[PERF_MEM_EVENTS__MAX];
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#endif /* _ARM64_MEM_EVENTS_H */
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@ -16,13 +16,13 @@ static char mem_stores_name[100];
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#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
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static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
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struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads"),
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E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores"),
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E(NULL, NULL, NULL),
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};
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static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
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struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
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E(NULL, NULL, NULL),
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E(NULL, NULL, NULL),
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E("mem-ldst", "ibs_op//", "ibs_op"),
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9
tools/perf/arch/x86/util/mem-events.h
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9
tools/perf/arch/x86/util/mem-events.h
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@ -0,0 +1,9 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _X86_MEM_EVENTS_H
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#define _X86_MEM_EVENTS_H
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extern struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX];
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extern struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX];
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#endif /* _X86_MEM_EVENTS_H */
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@ -15,6 +15,7 @@
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#include "../../../util/pmu.h"
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#include "../../../util/fncache.h"
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#include "../../../util/pmus.h"
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#include "mem-events.h"
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#include "env.h"
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void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
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@ -30,6 +31,12 @@ void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
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pmu->selectable = true;
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}
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#endif
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if (x86__is_amd_cpu()) {
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if (!strcmp(pmu->name, "ibs_op"))
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pmu->mem_events = perf_mem_events_amd;
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} else if (pmu->is_core)
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pmu->mem_events = perf_mem_events_intel;
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}
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int perf_pmus__num_mem_pmus(void)
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@ -19,7 +19,7 @@ unsigned int perf_mem_events__loads_ldlat = 30;
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#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
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static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
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struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "cpu/events/mem-loads"),
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E("ldlat-stores", "cpu/mem-stores/P", "cpu/events/mem-stores"),
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E(NULL, NULL, NULL),
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@ -34,6 +34,7 @@ enum {
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};
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extern unsigned int perf_mem_events__loads_ldlat;
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extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
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int perf_mem_events__parse(const char *str);
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int perf_mem_events__init(void);
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@ -986,8 +986,10 @@ static int pmu_max_precise(int dirfd, struct perf_pmu *pmu)
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}
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void __weak
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perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
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perf_pmu__arch_init(struct perf_pmu *pmu)
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{
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if (pmu->is_core)
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pmu->mem_events = perf_mem_events;
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}
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struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char *name)
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@ -10,6 +10,8 @@
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#include <stdio.h>
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#include "parse-events.h"
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#include "pmu-events/pmu-events.h"
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#include "map_symbol.h"
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#include "mem-events.h"
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struct evsel_config_term;
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struct perf_cpu_map;
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@ -162,6 +164,11 @@ struct perf_pmu {
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*/
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bool exclude_guest;
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} missing_features;
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/**
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* @mem_events: List of the supported mem events
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*/
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struct perf_mem_event *mem_events;
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};
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/** @perf_pmu__fake: A special global PMU used for testing. */
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