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From: Prabhat Kumar Ravi <prabhatravi09@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: wakeup tracer not able to capture traces on 3.4 kernel
Date: Thu, 29 Aug 2013 19:41:28 +0530	[thread overview]
Message-ID: <CAJ_BOiB6E4D-Y45VZTOGqhYMs_FG8UTpGnNdzjdj3nEP13A=3g@mail.gmail.com> (raw)

Hi,

I trying to capture traces through wakeup tracer, but not able to
capture it on 3.4 kernel with cortex A9 processor, armv7.
{{{
/ # mount -t debugfs nodev /debug
/ # sysctl kernel.ftrace_enabled=1
kernel.ftrace_enabled = 1
/ # echo wakeup > /debug/tracing/current_tracer
/ # echo latency-format > /debug/tracing/trace_options
/ # echo 0 > /debug/tracing/tracing_max_latency
/ # echo 1 > /debug/tracing/tracing_on
/ # sleep 10
/ # echo 0 > /debug/tracing/tracing_on
/ # cat /debug/tracing/trace
# tracer: wakeup
#
}}}

Please suggest me where I am wrong.

Regards,
Prabhat

             reply	other threads:[~2013-08-29 14:19 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-29 14:11 Prabhat Kumar Ravi [this message]
2013-08-29 15:12 ` wakeup tracer not able to capture traces on 3.4 kernel Prabhat Kumar Ravi
2013-08-30 15:59   ` Prabhat Kumar Ravi

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