Commit-ID: 6e316f9c19a088586fd9ae058f9ea35b271571f3
Gitweb: http://git.kernel.org/tip/6e316f9c19a088586fd9ae058f9ea35b271571f3
Author: Vince Weaver <vincent.weaver@xxxxxxxxx>
AuthorDate: Sun, 15 Jun 2014 02:01:58 -0400
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 18 Jun 2014 18:43:45 +0200
blackfin, 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: Steven Miao <realmz6@xxxxxxxxx>
Cc: adi-buildroot-devel@xxxxxxxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150200360.16738@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/blackfin/kernel/perf_event.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/blackfin/kernel/perf_event.c b/arch/blackfin/kernel/perf_event.c
index 974e554..ea20320 100644
--- a/arch/blackfin/kernel/perf_event.c
+++ b/arch/blackfin/kernel/perf_event.c
@@ -389,14 +389,6 @@ static int bfin_pmu_event_init(struct perf_event *event)
if (attr->exclude_hv || attr->exclude_idle)
return -EPERM;
- /*
- * 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;
-
ret = 0;
switch (attr->type) {
case PERF_TYPE_RAW:
@@ -490,6 +482,13 @@ static int __init bfin_pmu_init(void)
{
int ret;
+ /*
+ * 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;
+
ret = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
if (!ret)
perf_cpu_notifier(bfin_pmu_notifier);
--
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