mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-30 07:34:12 +08:00
cd82a32e99
Adding pmu object which provides interface to pmu's sysfs
event format definition located at:
${sysfs_mount}/bus/event_source/devices/${pmu}/format
Following interface is exported:
struct perf_pmu* perf_pmu__find(char *name);
- this function returns pmu object, which is then
passed as a handle to other interface functions
int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
struct list_head *head_terms);
- this function configures perf_event_attr struct based
on pmu's format definitions and config terms data,
containined in head_terms list.
Parser generator is used to retrive the pmu's format definition.
The generated parser is part of the patch. Added makefile rule
'pmu-parser' to generate the parser code out of the bison/flex
sources.
Added builtin test 'Test perf pmu format parsing', which could
be run like:
perf test pmu
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-errz96u1668gj9wlop1zhpht@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
44 lines
571 B
Plaintext
44 lines
571 B
Plaintext
%option prefix="perf_pmu_"
|
|
|
|
%{
|
|
#include <stdlib.h>
|
|
#include <linux/bitops.h>
|
|
#include "pmu.h"
|
|
#include "pmu-bison.h"
|
|
|
|
static int value(int base)
|
|
{
|
|
long num;
|
|
|
|
errno = 0;
|
|
num = strtoul(perf_pmu_text, NULL, base);
|
|
if (errno)
|
|
return PP_ERROR;
|
|
|
|
perf_pmu_lval.num = num;
|
|
return PP_VALUE;
|
|
}
|
|
|
|
%}
|
|
|
|
num_dec [0-9]+
|
|
|
|
%%
|
|
|
|
{num_dec} { return value(10); }
|
|
config { return PP_CONFIG; }
|
|
config1 { return PP_CONFIG1; }
|
|
config2 { return PP_CONFIG2; }
|
|
- { return '-'; }
|
|
: { return ':'; }
|
|
, { return ','; }
|
|
. { ; }
|
|
\n { ; }
|
|
|
|
%%
|
|
|
|
int perf_pmu_wrap(void)
|
|
{
|
|
return 1;
|
|
}
|