diff options
| author | Will Deacon <will.deacon@arm.com> | 2015-12-22 14:42:57 (GMT) |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-12-22 14:45:07 (GMT) |
| commit | 57d74123954dfe70fad12724d19f743ed14cec90 (patch) | |
| tree | fbba93a862f50a3325df09ddc045d7cd1239670f | |
| parent | abff083ce2046b4d55211c1db5992ec2dd391f3d (diff) | |
| download | linux-57d74123954dfe70fad12724d19f743ed14cec90.tar.xz | |
arm64: perf: add format entry to describe event -> config mapping
It's all very well providing an events directory to userspace that
details our events in terms of "event=0xNN", but if we don't define how
to encode the "event" field in the perf attr.config, then it's a waste
of time.
This patch adds a single format entry to describe that the event field
occupies the bottom 10 bits of our config field on ARMv8 (PMUv3).
Signed-off-by: Will Deacon <will.deacon@arm.com>
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index f0356a8..6fdcfb6 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -297,7 +297,7 @@ static struct attribute *armv8_pmuv3_event_attrs[] = { &armv8_event_attr_l21_tlb_refill.attr.attr, &armv8_event_attr_l2d_tlb.attr.attr, &armv8_event_attr_l21_tlb.attr.attr, - NULL + NULL, }; static struct attribute_group armv8_pmuv3_events_attr_group = { @@ -305,11 +305,25 @@ static struct attribute_group armv8_pmuv3_events_attr_group = { .attrs = armv8_pmuv3_event_attrs, }; +PMU_FORMAT_ATTR(event, "config:0-9"); + +static struct attribute *armv8_pmuv3_format_attrs[] = { + &format_attr_event.attr, + NULL, +}; + +static struct attribute_group armv8_pmuv3_format_attr_group = { + .name = "format", + .attrs = armv8_pmuv3_format_attrs, +}; + static const struct attribute_group *armv8_pmuv3_attr_groups[] = { &armv8_pmuv3_events_attr_group, - NULL + &armv8_pmuv3_format_attr_group, + NULL, }; + /* * Perf Events' indices */ |