mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-30 14:19:16 +00:00
Code Issues Releases Wiki Activity

perf parse-events: Support wildcards on raw events

Browse source 
Legacy raw events like r1a open as PERF_TYPE_RAW on non-hybrid systems
and on each hybrid PMU on hybrid systems. Rather than iterate hybrid
PMUs add a perf_pmu__supports_wildcard_numeric function that says when
a numeric event should be opened upon it. If the parsed event
specifies the type of the PMU then don't wildcard match PMUs, use the
specified PMU type.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-27-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2023-05-02 15:38:33 -07:00 committed by Arnaldo Carvalho de Melo
parent d7f21df0c9
commit 8bc75f699c
5 changed files with 52 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
tools/perf/util/parse-events.c
View file

@ -25,7 +25,6 @@
#include "util/parse-branch-options.h"
#include "util/evsel_config.h"
#include "util/event.h"
#include "util/parse-events-hybrid.h"
#include "util/pmu-hybrid.h"
#include "util/bpf-filter.h"
#include "util/util.h"
@ -1448,15 +1447,14 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
#endif
}
int parse_events_add_numeric(struct parse_events_state *parse_state,
struct list_head *list,
u32 type, u64 config,
struct list_head *head_config)
static int __parse_events_add_numeric(struct parse_events_state *parse_state,
struct list_head *list,
struct perf_pmu *pmu, u32 type, u64 config,
struct list_head *head_config)
{
struct perf_event_attr attr;
LIST_HEAD(config_terms);
const char *name, *metric_id;
bool hybrid;
int ret;
memset(&attr, 0, sizeof(attr));
@ -1474,19 +1472,41 @@ int parse_events_add_numeric(struct parse_events_state *parse_state,
name = get_config_name(head_config);
metric_id = get_config_metric_id(head_config);
ret = parse_events__add_numeric_hybrid(parse_state, list, &attr,
name, metric_id,
&config_terms, &hybrid);
if (hybrid)
goto out_free_terms;
ret = add_event(list, &parse_state->idx, &attr, name, metric_id,
&config_terms);
out_free_terms:
ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,
metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,
/*cpu_list=*/NULL) ? 0 : -ENOMEM;
free_config_terms(&config_terms);
return ret;
}
int parse_events_add_numeric(struct parse_events_state *parse_state,
struct list_head *list,
u32 type, u64 config,
struct list_head *head_config,
bool wildcard)
{
struct perf_pmu *pmu = NULL;
bool found_supported = false;
if (!wildcard)
return __parse_events_add_numeric(parse_state, list, /*pmu=*/NULL,
type, config, head_config);
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
int ret;
if (!perf_pmu__supports_wildcard_numeric(pmu))
continue;
found_supported = true;
ret = __parse_events_add_numeric(parse_state, list, pmu, pmu->type,
config, head_config);
if (ret)
return ret;
}
return found_supported ? 0 : -EINVAL;
}
int parse_events_add_tool(struct parse_events_state *parse_state,
struct list_head *list,
int tool_event)

3
tools/perf/util/parse-events.h
View file

@ -166,7 +166,8 @@ int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
int parse_events_add_numeric(struct parse_events_state *parse_state,
struct list_head *list,
u32 type, u64 config,
struct list_head *head_config);
struct list_head *head_config,
bool wildcard);
int parse_events_add_tool(struct parse_events_state *parse_state,
struct list_head *list,
int tool_event);

13
tools/perf/util/parse-events.y
View file

@ -435,7 +435,8 @@ value_sym '/' event_config '/'
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_numeric(_parse_state, list, type, config, $3);
err = parse_events_add_numeric(_parse_state, list, type, config, $3,
/*wildcard=*/false);
parse_events_terms__delete($3);
if (err) {
free_list_evsel(list);
@ -452,7 +453,9 @@ value_sym sep_slash_slash_dc
list = alloc_list();
ABORT_ON(!list);
ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config,
/*head_config=*/NULL,
/*wildcard=*/false));
$$ = list;
}
|
@ -596,7 +599,8 @@ PE_VALUE ':' PE_VALUE opt_event_config
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4);
err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4,
/*wildcard=*/false);
parse_events_terms__delete($4);
if (err) {
free(list);
@ -618,7 +622,8 @@ PE_RAW opt_event_config
num = strtoull($1 + 1, NULL, 16);
ABORT_ON(errno);
free($1);
err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, num, $2);
err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, num, $2,
/*wildcard=*/true);
parse_events_terms__delete($2);
if (err) {
free(list);

5
tools/perf/util/pmu.c
View file

@ -1655,6 +1655,11 @@ bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu)
return is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name);
}
bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu)
{
return is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name);
}
static bool pmu_alias_is_duplicate(struct sevent *alias_a,
struct sevent *alias_b)
{

1
tools/perf/util/pmu.h
View file

@ -221,6 +221,7 @@ struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
bool is_pmu_core(const char *name);
bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu);
void print_pmu_events(const struct print_callbacks *print_cb, void *print_state);
bool pmu_have_event(const char *pname, const char *name);