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perf tools: Add support to specify hw event as PMU event term 

Add a way to specify hw event as PMU event term like:

 'cpu/event=cpu-cycles/u'
 'cpu/event=instructions,.../u'
 'cpu/cycles,.../u'

The 'event=cpu-cycles' term is replaced/translated by the hw events
term translation, which is exposed by sysfs 'events' group attribute.

Add parser bits, the rest is already handled by the PMU alias code.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349873598-12583-8-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Jiri Olsa 2012-10-10 14:53:17 +02:00 committed by Ingo Molnar
parent 3fded963cd
commit 1d33d6dce1
3 changed files with 38 additions and 0 deletions
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18
tools/perf/util/parse-events.c
View File

@ -1142,6 +1142,24 @@ int parse_events__term_str(struct parse_events__term **term,
config, str, 0);
}
int parse_events__term_sym_hw(struct parse_events__term **term,
char *config, unsigned idx)
{
struct event_symbol *sym;
BUG_ON(idx >= PERF_COUNT_HW_MAX);
sym = &event_symbols_hw[idx];
if (config)
return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
PARSE_EVENTS__TERM_TYPE_USER, config,
(char *) sym->symbol, 0);
else
return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
PARSE_EVENTS__TERM_TYPE_USER,
(char *) "event", (char *) sym->symbol, 0);
}
int parse_events__term_clone(struct parse_events__term **new,
struct parse_events__term *term)
{

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

@ -76,6 +76,8 @@ int parse_events__term_num(struct parse_events__term **_term,
int type_term, char *config, u64 num);
int parse_events__term_str(struct parse_events__term **_term,
int type_term, char *config, char *str);
int parse_events__term_sym_hw(struct parse_events__term **term,
char *config, unsigned idx);
int parse_events__term_clone(struct parse_events__term **new,
struct parse_events__term *term);
void parse_events__free_terms(struct list_head *terms);

18
tools/perf/util/parse-events.y
View File

@ -352,6 +352,15 @@ PE_NAME '=' PE_VALUE
$$ = term;
}
|
PE_NAME '=' PE_VALUE_SYM_HW
{
struct parse_events__term *term;
int config = $3 & 255;
ABORT_ON(parse_events__term_sym_hw(&term, $1, config));
$$ = term;
}
|
PE_NAME
{
struct parse_events__term *term;
@ -361,6 +370,15 @@ PE_NAME
$$ = term;
}
|
PE_VALUE_SYM_HW
{
struct parse_events__term *term;
int config = $1 & 255;
ABORT_ON(parse_events__term_sym_hw(&term, NULL, config));
$$ = term;
}
|
PE_TERM '=' PE_NAME
{
struct parse_events__term *term;