From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] Add fault_major, fault_minor page fault trace events
Date: Tue, 25 Apr 2017 17:49:24 +0100 [thread overview]
Message-ID: <20170425164924.GR24484@arm.com> (raw)
In-Reply-To: <20170413022040.10156-1-credmonster@gmail.com>
On Wed, Apr 12, 2017 at 10:20:37PM -0400, Chris Redmon wrote:
> These changes add common trace events for major and minor page faults,
> as well as adding these traces to the arm and arm64 architectures. These
> traces offer useful information for determining the source of page faults
> in realtime systems, as well as the time penalty for taking a major or
> minor page fault.
>
> I made an attempt to minimize the overhead when these tracepoints are not
> enabled, but I'm willing to make more changes if desired.
Why is this necessary, given that we already report these types of fault
as perf sw events?
Will
prev parent reply other threads:[~2017-04-25 16:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-13 2:20 [PATCH 0/3] Add fault_major, fault_minor page fault trace events Chris Redmon
2017-04-13 2:20 ` [PATCH 1/3] tracing: Introduce traces for major and minor page faults Chris Redmon
2017-04-13 2:20 ` [PATCH 2/3] arm: Utilize trace events " Chris Redmon
2017-04-13 2:20 ` [PATCH 3/3] arm64: " Chris Redmon
2017-04-25 16:49 ` Will Deacon [this message]
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