| From | Greg Kroah-Hartman <> | Subject | [ 54/68] tracing: change CPU ring buffer state from tracing_cpumask | Date | Thu, 12 Jul 2012 16:02:28 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.0-stable review patch. If anyone has any objections, please let me know.
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From: Vaibhav Nagarnaik <vnagarnaik@google.com>
commit 71babb2705e2203a64c27ede13ae3508a0d2c16c upstream.
According to Documentation/trace/ftrace.txt:
tracing_cpumask:
This is a mask that lets the user only trace on specified CPUS. The format is a hex string representing the CPUS.
The tracing_cpumask currently doesn't affect the tracing state of per-CPU ring buffers.
This patch enables/disables CPU recording as its corresponding bit in tracing_cpumask is set/unset.
Link: http://lkml.kernel.org/r/1336096792-25373-3-git-send-email-vnagarnaik@google.com
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