From: Peter Zijlstra <peterz@infradead.org>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@linux.intel.com, linux-kernel@vger.kernel.org,
tglx@linutronix.de, torvalds@linux-foundation.org,
eranian@google.com, acme@redhat.com, hpa@zytor.com,
alexander.shishkin@linux.intel.com, mingo@kernel.org,
jolsa@redhat.com, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:perf/core] perf/x86/intel: Disable userspace RDPMC usage for large PEBS
Date: Fri, 9 Mar 2018 18:42:18 +0100 [thread overview]
Message-ID: <20180309174218.GB4064@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <alpine.DEB.2.21.1803090929380.4834@macbook-air>
On Fri, Mar 09, 2018 at 09:31:11AM -0500, Vince Weaver wrote:
> On Fri, 9 Mar 2018, tip-bot for Kan Liang wrote:
>
> > Commit-ID: 1af22eba248efe2de25658041a80a3d40fb3e92e
> > Gitweb: https://git.kernel.org/tip/1af22eba248efe2de25658041a80a3d40fb3e92e
> > Author: Kan Liang <kan.liang@linux.intel.com>
> > AuthorDate: Mon, 12 Feb 2018 14:20:35 -0800
> > Committer: Ingo Molnar <mingo@kernel.org>
> > CommitDate: Fri, 9 Mar 2018 08:22:23 +0100
> >
> > perf/x86/intel: Disable userspace RDPMC usage for large PEBS
> >
>
>
> So this whole commit log is about disabling RDPMC usage for "large PEBS"
> but the actual change disables RDPMC if "PERF_X86_EVENT_FREERUNNING"
>
> Either the commit log is really misleading, or else a poor name was chosen
> for this feature.
Its the same thing, and yes that might want renaming I suppose.
next prev parent reply other threads:[~2018-03-09 17:42 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-12 22:20 [PATCH V4 0/5] bugs fix for auto-reload mmap read and rdpmc read kan.liang
2018-02-12 22:20 ` [PATCH V4 1/5] perf/x86/intel: Fix event update for auto-reload kan.liang
2018-02-17 6:21 ` [perf/x86/intel] 41e062cd2e: WARNING:at_arch/x86/events/intel/ds.c:#intel_pmu_save_and_restart_reload kernel test robot
2018-02-19 12:44 ` Peter Zijlstra
2018-02-20 18:59 ` Liang, Kan
2018-03-09 9:08 ` [tip:perf/core] perf/x86/intel: Properly save/restore the PMU state in the NMI handler tip-bot for Kan Liang
2018-02-21 10:32 ` [PATCH V4 1/5] perf/x86/intel: Fix event update for auto-reload Peter Zijlstra
2018-02-21 13:43 ` Liang, Kan
2018-02-21 13:45 ` Peter Zijlstra
2018-03-09 9:08 ` [tip:perf/core] " tip-bot for Kan Liang
2018-02-12 22:20 ` [PATCH V4 2/5] perf/x86: Introduce read function for x86_pmu kan.liang
2018-03-09 9:09 ` [tip:perf/core] perf/x86: Introduce a ->read() callback in 'struct x86_pmu' tip-bot for Kan Liang
2018-02-12 22:20 ` [PATCH V4 3/5] perf/x86/intel/ds: Introduce read function for auto-reload event kan.liang
2018-03-09 9:09 ` [tip:perf/core] perf/x86/intel/ds: Introduce ->read() function for auto-reload events and flush the PEBS buffer there tip-bot for Kan Liang
2018-02-12 22:20 ` [PATCH V4 4/5] perf/x86/intel: Fix pmu read for auto-reload kan.liang
2018-03-09 9:10 ` [tip:perf/core] perf/x86/intel: Fix PMU " tip-bot for Kan Liang
2018-02-12 22:20 ` [PATCH V4 5/5] perf/x86: Fix: disable userspace RDPMC usage for large PEBS kan.liang
2018-03-09 9:10 ` [tip:perf/core] perf/x86/intel: Disable " tip-bot for Kan Liang
2018-03-09 14:31 ` Vince Weaver
2018-03-09 17:42 ` Peter Zijlstra [this message]
2018-03-09 18:53 ` Liang, Kan
2018-03-09 19:10 ` Vince Weaver
2018-03-12 14:08 ` Liang, Kan
2018-03-20 11:15 ` [tip:perf/urgent] " tip-bot for Kan Liang
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