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From: Steven Rostedt <rostedt@goodmis.org>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Alexei Starovoitov <ast@kernel.org>
Subject: Re: [for-next][PATCH 2/2] tracing: Use temp buffer when filtering events
Date: Thu, 5 May 2016 11:35:43 -0400	[thread overview]
Message-ID: <20160505113543.33f9a94b@gandalf.local.home> (raw)
In-Reply-To: <20160505113251.71f2e60d@gandalf.local.home>

On Thu, 5 May 2016 11:32:51 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:

> Think about it, what's the difference if the interrupt came in just
> before the trace or just after? It still came in the same location with
> respect to the normal flow of the code. The only difference is, where
> we recorded it.

Also, if we used a temp buffer for each one, the same thing would
happen. The interrupt would be committed first before returning back to
the interrupted event. Perf does the same thing, but all the time.

-- Steve

  reply	other threads:[~2016-05-05 15:35 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-04 13:52 [for-next][PATCH 0/2] tracing: Use a temp buffer when filtering events Steven Rostedt
2016-05-04 13:52 ` [for-next][PATCH 1/2] tracing: Remove TRACE_EVENT_FL_USE_CALL_FILTER logic Steven Rostedt
2016-05-04 13:52 ` [for-next][PATCH 2/2] tracing: Use temp buffer when filtering events Steven Rostedt
2016-05-05 15:20   ` Alexei Starovoitov
2016-05-05 15:32     ` Steven Rostedt
2016-05-05 15:35       ` Steven Rostedt [this message]
2016-05-05 15:40         ` Alexei Starovoitov
2020-08-28  7:53   ` Wen Gong
2020-08-28  7:53     ` Wen Gong
2020-08-28  7:53     ` Wen Gong
2020-08-28 22:49     ` Steven Rostedt
2020-08-28 22:49       ` Steven Rostedt
2020-08-28 22:49       ` Steven Rostedt
2020-08-28 22:54       ` Steven Rostedt
2020-08-28 22:54         ` Steven Rostedt
2020-08-28 22:54         ` Steven Rostedt
2020-08-28 22:55         ` Steven Rostedt
2020-08-28 22:55           ` Steven Rostedt
2020-08-28 22:55           ` Steven Rostedt
2020-08-29 15:52           ` Wen Gong
2020-08-29 15:52             ` Wen Gong
2020-08-29 15:52             ` Wen Gong

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