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authorVince Weaver <vincent.weaver@maine.edu>2014-06-15 06:01:58 (GMT)
committerIngo Molnar <mingo@kernel.org>2014-06-18 16:43:45 (GMT)
commit6e316f9c19a088586fd9ae058f9ea35b271571f3 (patch)
tree9218e397a23408cacd2bc1d4e8261fd5d9434af3
parent2cc9e588b0ff80c209c59a3e369c73e591535ba8 (diff)
downloadlinux-6e316f9c19a088586fd9ae058f9ea35b271571f3.tar.xz
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@maine.edu> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150200360.16738@vincent-weaver-1.umelst.maine.edu Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--arch/blackfin/kernel/perf_event.c15
1 files 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);