diff options
author | Jiri Olsa <jolsa@redhat.com> | 2012-03-15 20:09:16 +0100 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-03-16 14:26:06 -0300 |
commit | 8f707d843c2f4023490a873dbc182f632a3a5906 (patch) | |
tree | e4c6d509756aa869314888de0d5873c4a20a7e92 /tools/perf/util/parse-events.l | |
parent | 89812fc81f8d62d70433a8ff63d26819f372e8ec (diff) |
perf tools: Add config options support for event parsing
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>
Diffstat (limited to 'tools/perf/util/parse-events.l')
-rw-r--r-- | tools/perf/util/parse-events.l | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 44dbc359f0ae..ab9eca120feb 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -5,6 +5,7 @@ #include <errno.h> #include "../perf.h" #include "parse-events-bison.h" +#include "parse-events.h" static int __value(char *str, int base, int token) { @@ -41,6 +42,12 @@ static int sym(int type, int config) return PE_VALUE_SYM; } +static int term(int type) +{ + parse_events_lval.num = type; + return PE_TERM; +} + %} num_dec [0-9]+ @@ -85,6 +92,18 @@ speculative-read|speculative-load | refs|Reference|ops|access | misses|miss { return str(PE_NAME_CACHE_OP_RESULT); } + /* + * These are event config hardcoded term names to be specified + * within xxx/.../ syntax. So far we dont clash with other names, + * so we can put them here directly. In case the we have a conflict + * in future, this needs to go into '//' condition block. + */ +config { return term(PARSE_EVENTS__TERM_TYPE_CONFIG); } +config1 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG1); } +config2 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG2); } +period { return term(PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } +branch_type { return term(PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } + mem: { return PE_PREFIX_MEM; } r{num_raw_hex} { return raw(); } {num_dec} { return value(10); } |