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Date: Mon, 10 Aug 2015 13:19:36 +0200 From: Jiri Olsa <jolsa@...hat.com> To: tglx@...utronix.de, linux-kernel@...r.kernel.org, hpa@...or.com, luto@...nel.org, torvalds@...ux-foundation.org, peterz@...radead.org, kan.liang@...el.com, mingo@...nel.org Cc: linux-tip-commits@...r.kernel.org Subject: Re: [tip:perf/core] perf/x86: Add an MSR PMU driver On Tue, Aug 04, 2015 at 02:01:20AM -0700, tip-bot for Andy Lutomirski wrote: SNIP > + /* unsupported modes and filters */ > + if (event->attr.exclude_user || > + event->attr.exclude_kernel || > + event->attr.exclude_hv || > + event->attr.exclude_idle || > + event->attr.exclude_host || > + event->attr.exclude_guest || > + event->attr.sample_period) /* no sampling */ > + return -EINVAL; > + > + event->hw.idx = -1; > + event->hw.event_base = msr[cfg].msr; > + event->hw.config = cfg; > + > + return 0; > +} > + > +static inline u64 msr_read_counter(struct perf_event *event) > +{ > + u64 now; > + > + if (event->hw.event_base) > + rdmsrl(event->hw.event_base, now); > + else > + now = rdtsc(); not sure itf there's newer version, but I needed attached change to make it compile on latest Arnaldo's tree jirka --- diff --git a/arch/x86/kernel/cpu/perf_event_msr.c b/arch/x86/kernel/cpu/perf_event_msr.c index af216e9..dfa75e5 100644 --- a/arch/x86/kernel/cpu/perf_event_msr.c +++ b/arch/x86/kernel/cpu/perf_event_msr.c @@ -88,7 +88,7 @@ static inline u64 msr_read_counter(struct perf_event *event) if (event->hw.event_base) rdmsrl(event->hw.event_base, now); else - now = rdtsc(); + rdtscll(now); return now; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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