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| author |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-09-06 10:37:15 -0600 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-09-13 17:09:11 -0300 |
| commit | dd60fba7324572498d91163e96b1cfe5cd5f7f3b (patch) | |
| tree | 840943df1c2f561e7de3c4a0e603f58e82b25e1a /tools/perf/util/parse-events.c | |
| parent | perf report: Enable group view with hierarchy (diff) | |
| download | wireguard-linux-dd60fba7324572498d91163e96b1cfe5cd5f7f3b.tar.xz wireguard-linux-dd60fba7324572498d91163e96b1cfe5cd5f7f3b.zip | |
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.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 6c913c3914fb..2eb8b1ed4cc8 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; } |