Commit-ID: ba553c9e167971c21b0158d89737bc385c326447
Gitweb: http://git.kernel.org/tip/ba553c9e167971c21b0158d89737bc385c326447
Author: Vince Weaver <vincent.weaver@xxxxxxxxx>
AuthorDate: Sun, 15 Jun 2014 02:06:15 -0400
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 18 Jun 2014 18:43:47 +0200
sh, perf: Use common PMU interrupt disabled code
Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for
failing a sampling event when no PMU interrupt is available.
Signed-off-by: Vince Weaver <vincent.weaver@xxxxxxxxx>
Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: linux-sh@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150205300.16738@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/sh/kernel/perf_event.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
index 0233167..7cfd7f1 100644
--- a/arch/sh/kernel/perf_event.c
+++ b/arch/sh/kernel/perf_event.c
@@ -129,14 +129,6 @@ static int __hw_perf_event_init(struct perf_event *event)
return -ENODEV;
/*
- * All of the on-chip counters are "limited", in that they have
- * no interrupts, and are therefore unable to do sampling without
- * further work and timer assistance.
- */
- if (hwc->sample_period)
- return -EINVAL;
-
- /*
* See if we need to reserve the counter.
*
* If no events are currently in use, then we have to take a
@@ -392,6 +384,13 @@ int register_sh_pmu(struct sh_pmu *_pmu)
pr_info("Performance Events: %s support registered\n", _pmu->name);
+ /*
+ * All of the on-chip counters are "limited", in that they have
+ * no interrupts, and are therefore unable to do sampling without
+ * further work and timer assistance.
+ */
+ pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
+
WARN_ON(_pmu->num_events > MAX_HWEVENTS);
perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
--
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