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| author | Vaibhav Nagarnaik <vnagarnaik@google.com> | 2012-05-03 18:59:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 09:04:40 -0700 |
| commit | 4943d9cb7d82218d196ccc034ecaf933298e7e95 (patch) | |
| tree | 9ded95e170894ee15f798fa118ed2ebced2ec9ab /kernel/latencytop.c | |
| parent | dbb3e108234bf8e4bf43d2fed8bc57792e3dbd2f (diff) | |
| download | lwn-4943d9cb7d82218d196ccc034ecaf933298e7e95.tar.gz lwn-4943d9cb7d82218d196ccc034ecaf933298e7e95.zip | |
tracing: change CPU ring buffer state from tracing_cpumask
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
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Laurent Chavey <chavey@google.com>
Cc: Justin Teravest <teravest@google.com>
Cc: David Sharp <dhsharp@google.com>
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/latencytop.c')
0 files changed, 0 insertions, 0 deletions