From: Paul Mackerras <paulus@samba.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
David Miller <davem@davemloft.net>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Pekka Paalanen <pq@iki.fi>,
linuxppc-dev@ozlabs.org, Rusty Russell <rusty@rustcorp.com.au>,
Paul Mundt <lethal@linux-sh.org>,
Steven Rostedt <srostedt@redhat.com>
Subject: Re: [PATCH 1/7] ftrace, PPC: do not latency trace idle
Date: Mon, 17 Nov 2008 14:43:24 +1100 [thread overview]
Message-ID: <18720.59484.266300.486911@drongo.ozlabs.ibm.com> (raw)
In-Reply-To: <20081116212515.093117788@goodmis.org>
Steven Rostedt writes:
> When idle is called, interrupts are disabled, but the idle function
> will still wake up on an interrupt. The problem is that the interrupt
> disabled latency tracer will take this call to idle as a latency.
>
> This patch disables the latency tracing when going into idle.
Patch looks OK, but what is the connection with ftrace?
Paul.
next prev parent reply other threads:[~2008-11-17 5:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-16 21:24 [PATCH 0/7] Porting dynmaic ftrace to PowerPC Steven Rostedt
2008-11-16 21:24 ` [PATCH 1/7] ftrace, PPC: do not latency trace idle Steven Rostedt
2008-11-17 3:43 ` Paul Mackerras [this message]
2008-11-17 15:43 ` Steven Rostedt
2008-11-16 21:24 ` [PATCH 2/7] ftrace, ppc: convert to new dynamic ftrace arch API Steven Rostedt
2008-11-17 3:57 ` Paul Mackerras
2008-11-17 15:47 ` Steven Rostedt
2008-11-16 21:24 ` [PATCH 3/7] ftrace: powerpc mcount record port Steven Rostedt
2008-11-16 21:24 ` [PATCH 4/7] ftrace, PPC: use probe_kernel API to modify code Steven Rostedt
2008-11-17 4:44 ` Paul Mackerras
2008-11-17 15:51 ` Steven Rostedt
2008-11-16 21:24 ` [PATCH 5/7] ftrace, PPC64: handle module trampolines for dyn ftrace Steven Rostedt
2008-11-17 5:00 ` Paul Mackerras
2008-11-17 16:02 ` Steven Rostedt
2008-11-17 16:18 ` Steven Rostedt
2008-11-16 21:24 ` [PATCH 6/7] ftrace,ppc32: enabled dynamic ftrace Steven Rostedt
2008-11-16 21:24 ` [PATCH 7/7] ftrace,ppc32: dynamic ftrace to handle modules Steven Rostedt
2008-11-16 22:55 ` [PATCH 0/7] Porting dynmaic ftrace to PowerPC Paul Mackerras
2008-11-17 15:42 ` Steven Rostedt
2008-11-17 20:03 ` Steven Rostedt
2008-11-18 13:56 ` Steven Rostedt
2008-11-19 2:38 ` Paul Mackerras
2008-11-19 3:04 ` Steven Rostedt
2008-11-19 9:27 ` Ingo Molnar
2008-11-19 10:38 ` Paul Mackerras
2008-11-19 10:57 ` Ingo Molnar
2008-11-19 11:35 ` Paul Mackerras
2008-11-19 12:10 ` Steven Rostedt
2008-11-19 12:15 ` Steven Rostedt
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