kevin/linux
1
Fork 0
Code

perf parse-events: Add a retirement latency modifier

Browse Source 
Retirement latency is a separate sampled count used on newer Intel
CPUs.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Link: https://lore.kernel.org/r/20240720062102.444578-2-weilin.wang@intel.com
Signed-off-by: Weilin Wang <weilin.wang@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2024-07-20 02:20:54 -04:00 committed by Arnaldo Carvalho de Melo
parent 8f29be326d
commit 807746b9bd
4 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/perf/util/evsel.h
View File

@ -98,6 +98,7 @@ struct evsel {
bool bpf_counter;
bool use_config_name;
bool skippable;
bool retire_lat;
int bpf_fd;
struct bpf_object *bpf_obj;
struct list_head config_terms;

2
tools/perf/util/parse-events.c
View File

@ -1811,6 +1811,8 @@ static int parse_events__modifier_list(struct parse_events_state *parse_state,
evsel->weak_group = true;
if (mod.bpf)
evsel->bpf_counter = true;
if (mod.retire_lat)
evsel->retire_lat = true;
}
return 0;
}

1
tools/perf/util/parse-events.h
View File

@ -203,6 +203,7 @@ struct parse_events_modifier {
bool hypervisor : 1; /* 'h' */
bool guest : 1; /* 'G' */
bool host : 1; /* 'H' */
bool retire_lat : 1; /* 'R' */
};
int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc,

3
tools/perf/util/parse-events.l
View File

@ -209,6 +209,7 @@ static int modifiers(struct parse_events_state *parse_state, yyscan_t scanner)
CASE('W', weak);
CASE('e', exclusive);
CASE('b', bpf);
CASE('R', retire_lat);
default:
return PE_ERROR;
}
@ -250,7 +251,7 @@ drv_cfg_term [a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
* If you add a modifier you need to update check_modifier().
* Also, the letters in modifier_event must not be in modifier_bp.
*/
modifier_event [ukhpPGHSDIWeb]{1,15}
modifier_event [ukhpPGHSDIWebR]{1,16}
modifier_bp [rwx]{1,3}
lc_type (L1-dcache|l1-d|l1d|L1-data|L1-icache|l1-i|l1i|L1-instruction|LLC|L2|dTLB|d-tlb|Data-TLB|iTLB|i-tlb|Instruction-TLB|branch|branches|bpu|btb|bpc|node)
lc_op_result (load|loads|read|store|stores|write|prefetch|prefetches|speculative-read|speculative-load|refs|Reference|ops|access|misses|miss)