Re: [RFC][PATCH 00/11] perf pmu interface -v2

From: Matt Fleming
Date: Sat Jun 26 2010 - 07:22:46 EST

On Thu, 24 Jun 2010 16:28:04 +0200, Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:
> These patches prepare the perf code for multiple pmus (no user
> interface yet, Lin Ming is working on that). These patches remove all
> weak functions and rework the struct pmu interface.
> The patches are boot tested on x86_64 and compile tested on: powerpc
> (!fsl, what config is that?), sparc and arm (sorry no SH compiler)

Hi Peter,

I tried your SH changes and I needed to apply this patch to get it to
compile. I haven't run the code yet, but I'll do that later today.


diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
index 50ff852..6bfbaec 100644
--- a/arch/sh/kernel/perf_event.c
+++ b/arch/sh/kernel/perf_event.c
@@ -251,7 +251,7 @@ static void sh_pmu_del(struct perf_event *event, int flags)

-static int sh_pmu_enable(struct perf_event *event, int flags)
+static int sh_pmu_add(struct perf_event *event, int flags)
struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
struct hw_perf_event *hwc = &event->hw;
@@ -283,7 +283,7 @@ static void sh_pmu_read(struct perf_event *event)
sh_perf_event_update(event, &event->hw, event->hw.idx);

-static in sh_pmu_event_init(struct perf_event *event)
+static int sh_pmu_event_init(struct perf_event *event)
int err = __hw_perf_event_init(event);
if (unlikely(err)) {
@@ -345,15 +345,15 @@ sh_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
return NOTIFY_OK;

-int __cpuinit register_sh_pmu(struct sh_pmu *pmu)
+int __cpuinit register_sh_pmu(struct sh_pmu *_pmu)
if (sh_pmu)
return -EBUSY;
- sh_pmu = pmu;
+ sh_pmu = _pmu;

- pr_info("Performance Events: %s support registered\n", pmu->name);
+ pr_info("Performance Events: %s support registered\n", _pmu->name);

- WARN_ON(pmu->num_events > MAX_HWEVENTS);
+ WARN_ON(_pmu->num_events > MAX_HWEVENTS);

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