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authorMathieu Poirier <mathieu.poirier@linaro.org>2016-09-06 10:37:15 -0600
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-09-13 17:09:11 -0300
commitdd60fba7324572498d91163e96b1cfe5cd5f7f3b (patch)
tree840943df1c2f561e7de3c4a0e603f58e82b25e1a /tools/perf/util/parse-events.c
parent30d476ae738d1ce33f170dd79398ecd211274df6 (diff)
downloadop-kernel-dev-dd60fba7324572498d91163e96b1cfe5cd5f7f3b.zip
op-kernel-dev-dd60fba7324572498d91163e96b1cfe5cd5f7f3b.tar.gz
perf tools: Add infrastructure for PMU specific configuration
This patch adds PMU driver specific configuration to the parser infrastructure by preceding any term with the '@' letter. As such doing something like: perf record -e some_event/@cfg1,@cfg2=config/ ... will see 'cfg1' and 'cfg2=config' being added to the list of evsel config terms. Token 'cfg1' and 'cfg2=config' are not processed in user space and are meant to be interpreted by the PMU driver. First the lexer/parser are supplemented with the required definitions to recognise the driver specific configuration. From there they are simply added to the list of event terms. The bulk of the work is done in function "parse_events_add_pmu()" where driver config event terms are added to a new list of driver config terms, which in turn spliced with the event's new driver configuration list. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1473179837-3293-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.c')
-rw-r--r--tools/perf/util/parse-events.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 6c913c3..2eb8b1e 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -904,6 +904,7 @@ static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
[PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
[PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
[PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
+ [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
};
static bool config_term_shrinked;
@@ -1034,7 +1035,8 @@ static int config_term_pmu(struct perf_event_attr *attr,
struct parse_events_term *term,
struct parse_events_error *err)
{
- if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER)
+ if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
+ term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
/*
* Always succeed for sysfs terms, as we dont know
* at this point what type they need to have.
@@ -1134,6 +1136,9 @@ do { \
case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
break;
+ case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
+ ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
+ break;
default:
break;
}
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