xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf tools: Add config options support for event parsing

Browse Source 
Adding a new rule to the event grammar to be able to specify
values of additional attributes of symbolic event.

The new syntax for event symbolic definition is:

event_legacy_symbol:  PE_NAME_SYM '/' event_config '/' |
                      PE_NAME_SYM sep_slash_dc

event_config:         event_config ',' event_term | event_term

event_term:           PE_NAME '=' PE_NAME |
                      PE_NAME '=' PE_VALUE
                      PE_NAME

sep_slash_dc: '/' | ':' |

At the moment the config options are hardcoded to be used for legacy
symbol events to define several perf_event_attr fields. It is:

  'config'   to define perf_event_attr::config
  'config1'  to define perf_event_attr::config1
  'config2'  to define perf_event_attr::config2
  'period'   to define perf_event_attr::sample_period

Legacy events could be now specified as:
  cycles/period=100000/

If term is specified without the value assignment, then 1 is
assigned by default.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-mgkavww9790jbt2jdkooyv4q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2012-03-15 20:09:16 +01:00
committed by Arnaldo Carvalho de Melo
parent 89812fc81f
commit 8f707d843c
9 changed files with 845 additions and 426 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
tools/perf/util/parse-events.h
View File

@@ -33,6 +33,34 @@ extern int parse_filter(const struct option *opt, const char *str, int unset);
#define EVENTS_HELP_MAX (128*1024)
enum {
PARSE_EVENTS__TERM_TYPE_CONFIG,
PARSE_EVENTS__TERM_TYPE_CONFIG1,
PARSE_EVENTS__TERM_TYPE_CONFIG2,
PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
PARSE_EVENTS__TERM_TYPE_NUM,
PARSE_EVENTS__TERM_TYPE_STR,
PARSE_EVENTS__TERM_TYPE_HARDCODED_MAX =
PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
};
struct parse_events__term {
char *config;
union {
char *str;
long num;
} val;
int type;
struct list_head list;
};
int parse_events__is_hardcoded_term(struct parse_events__term *term);
int parse_events__new_term(struct parse_events__term **term, int type,
char *config, char *str, long num);
void parse_events__free_terms(struct list_head *terms);
int parse_events_modifier(struct list_head *list __used, char *str __used);
int parse_events_add_tracepoint(struct list_head *list, int *idx,
char *sys, char *event);
@@ -40,7 +68,8 @@ int parse_events_add_raw(struct perf_evlist *evlist, unsigned long config,
unsigned long config1, unsigned long config2,
char *mod);
int parse_events_add_numeric(struct list_head *list, int *idx,
unsigned long type, unsigned long config);
unsigned long type, unsigned long config,
struct list_head *head_config);
int parse_events_add_cache(struct list_head *list, int *idx,
char *type, char *op_result1, char *op_result2);
int parse_events_add_breakpoint(struct list_head *list, int *idx,