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

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Date:	Sat, 26 Jun 2010 12:22:39 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-kernel@...r.kernel.org, paulus <paulus@...ba.org>,
	stephane eranian <eranian@...glemail.com>,
	Robert Richter <robert.richter@....com>,
	Will Deacon <will.deacon@....com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Yanmin <yanmin_zhang@...ux.intel.com>,
	Deng-Cheng Zhu <dengcheng.zhu@...il.com>,
	David Miller <davem@...emloft.net>
Subject: Re: [RFC][PATCH 00/11] perf pmu interface -v2

On Thu, 24 Jun 2010 16:28:04 +0200, Peter Zijlstra <a.p.zijlstra@...llo.nl> 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)
 	perf_event_update_userpage(event);
 }
 
-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);
 
 	perf_pmu_register(&pmu);
 	perf_cpu_notifier(sh_pmu_notifier);
--
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