Commit 7b9f72c6 authored by Mark Rutland's avatar Mark Rutland Committed by Will Deacon

ARM: perf: clean up event group validation

Currently, event group validation compares each event's 'pmu' pointer
against the static 'pmu' pointer. This limits the code to supporting
only 1 PMU.

This patch changes the behaviour to consider an event's group leader's
'pmu' pointer as canonical for validation. This should ease later
generalisation of the code to support multiple PMUs at once.
Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Reviewed-by: default avatarWill Deacon <will.deacon@arm.com>
Reviewed-by: default avatarJamie Iles <jamie@jamieiles.com>
Reviewed-by: default avatarAshwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 48957155
......@@ -348,8 +348,9 @@ validate_event(struct cpu_hw_events *cpuc,
struct perf_event *event)
{
struct hw_perf_event fake_event = event->hw;
struct pmu *leader_pmu = event->group_leader->pmu;
if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF)
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
return 1;
return armpmu->get_event_idx(cpuc, &fake_event) >= 0;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment