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From: Sergei Shtylyov <sshtylyov@mvista.com>
To: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Cc: ralf@linux-mips.org, a.p.zijlstra@chello.nl, fweisbec@gmail.com,
will.deacon@arm.com, linux-mips@linux-mips.org,
linux-kernel@vger.kernel.org, wuzhangjin@gmail.com,
paulus@samba.org, mingo@elte.hu, acme@redhat.com,
matt@console-pimps.org, ddaney@caviumnetworks.com
Subject: Re: [PATCH v4 3/5] MIPS/Perf-events: Fix event check in validate_event()
Date: Fri, 21 Jan 2011 14:14:55 +0300 [thread overview]
Message-ID: <4D396AAF.6080603@mvista.com> (raw)
In-Reply-To: <1295597961-7565-4-git-send-email-dengcheng.zhu@gmail.com>
Hello.
On 21-01-2011 11:19, Deng-Cheng Zhu wrote:
> Ignore events that are in off/error state or belong to a different PMU.
> This patch originates from the following commit for ARM by Will Deacon:
> - 65b4711ff513767341aa1915c822de6ec0de65cb
> ARM: 6352/1: perf: fix event validation
> The validate_event function in the ARM perf events backend has the
> following problems:
> 1.) Events that are disabled count towards the cost.
> 2.) Events associated with other PMUs [for example, software events or
> breakpoints] do not count towards the cost, but do fail validation,
> causing the group to fail.
> This patch changes validate_event so that it ignores events in the
> PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs.
> Changes:
> v4 - v3:
> o None
> v3 - v2:
> o Keep all mentioned commits in the form of number + title + original
> summary + (MIPS specific info when needed).
> v2 - v1:
> o Corrected the return value of the event check in validate_event().
The patch changes should follow the --- tearline, not precede it.
> Acked-by: Will Deacon<will.deacon@arm.com>
> Acked-by: David Daney<ddaney@caviumnetworks.com>
> Signed-off-by: Deng-Cheng Zhu<dengcheng.zhu@gmail.com>
> ---
WBR, Sergei
next prev parent reply other threads:[~2011-01-21 11:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-21 8:19 [PATCH v4 0/5] MIPS/Perf-events: Sync with mainline upper layer (v4) Deng-Cheng Zhu
2011-01-21 8:19 ` [PATCH v4 1/5] MIPS/Perf-events: Work with irq_work Deng-Cheng Zhu
2011-01-21 8:19 ` [PATCH v4 2/5] MIPS/Perf-events: Work with the new PMU interface Deng-Cheng Zhu
2011-01-21 8:19 ` [PATCH v4 3/5] MIPS/Perf-events: Fix event check in validate_event() Deng-Cheng Zhu
2011-01-21 11:14 ` Sergei Shtylyov [this message]
2011-01-24 7:38 ` Deng-Cheng Zhu
2011-01-21 8:19 ` [PATCH v4 4/5] MIPS/Perf-events: Work with the new callchain interface Deng-Cheng Zhu
2011-01-21 8:19 ` [PATCH v4 5/5] MIPS/Perf-events: Use unsigned delta for right shift in event update Deng-Cheng Zhu
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