From: Jiri Olsa <jolsa@redhat.com>
To: Andi Kleen <ak@linux.intel.com>
Cc: Stephane Eranian <eranian@google.com>,
"Liang, Kan" <kan.liang@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH V3 0/5] bugs fix for large PEBS mmap read and rdpmc read
Date: Wed, 31 Jan 2018 10:15:39 +0100 [thread overview]
Message-ID: <20180131091539.GA3313@krava> (raw)
In-Reply-To: <20180131035941.GW26209@tassilo.jf.intel.com>
On Tue, Jan 30, 2018 at 07:59:41PM -0800, Andi Kleen wrote:
> > Still, the part I am missing here, is why asking for
> > PERF_SAMPLE_PERIOD voids large PEBS.
>
> I think it was disabled together with frequency mode
> (which we could support too, but it's a bit more work)
>
> But yes PERIOD could probably be allowed.
looks like it's just a matter of adding PERF_SAMPLE_PERIOD
into PEBS_FREERUNNING_FLAGS, we already populate period
in setup_pebs_sample_data
jirka
---
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 8e4ea143ed96..78f91ec1056e 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -93,7 +93,8 @@ struct amd_nb {
PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
- PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER)
+ PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \
+ PERF_SAMPLE_PERIOD)
#define PEBS_REGS \
(PERF_REG_X86_AX | \
next prev parent reply other threads:[~2018-01-31 9:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-29 16:29 [PATCH V3 0/5] bugs fix for large PEBS mmap read and rdpmc read kan.liang
2018-01-29 16:29 ` [PATCH V3 1/5] perf/x86/intel: fix event update for auto-reload kan.liang
2018-02-06 15:06 ` Peter Zijlstra
2018-02-06 17:58 ` Liang, Kan
2018-02-09 14:09 ` Peter Zijlstra
2018-02-09 15:49 ` Liang, Kan
2018-02-10 14:09 ` Peter Zijlstra
2018-01-29 16:29 ` [PATCH V3 2/5] perf/x86: introduce read function for x86_pmu kan.liang
2018-01-29 16:29 ` [PATCH V3 3/5] perf/x86/intel/ds: introduce read function for large pebs kan.liang
2018-01-29 16:29 ` [PATCH V3 4/5] perf/x86/intel: fix pmu read for large PEBS kan.liang
2018-01-29 16:29 ` [PATCH V3 5/5] perf/x86: fix: disable userspace RDPMC usage " kan.liang
2018-01-30 9:16 ` [PATCH V3 0/5] bugs fix for large PEBS mmap read and rdpmc read Stephane Eranian
2018-01-30 13:39 ` Jiri Olsa
2018-01-30 14:59 ` Liang, Kan
2018-01-30 15:04 ` Jiri Olsa
2018-01-30 15:25 ` Liang, Kan
2018-01-30 16:36 ` Stephane Eranian
2018-01-30 16:48 ` Liang, Kan
2018-01-30 18:52 ` Jiri Olsa
2018-01-30 19:56 ` Stephane Eranian
2018-01-31 3:59 ` Andi Kleen
2018-01-31 9:15 ` Jiri Olsa [this message]
2018-01-31 13:15 ` Jiri Olsa
2018-01-31 15:15 ` Liang, Kan
2018-01-31 15:41 ` Jiri Olsa
2018-01-30 14:41 ` Liang, Kan
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