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| author | Steven Rostedt <srostedt@redhat.com> | 2011-02-08 13:54:06 -0500 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-02-08 17:14:58 -0500 |
| commit | 6752ab4a9c30d5411b2dfdb251a3f1cb18aae487 (patch) | |
| tree | 2f6e2bb5b562c43b3b3d7efe095e196a19995395 /kernel/trace | |
| parent | 87d80de2800d087ea833cb79bc13f85ff34ed49f (diff) | |
| download | op-kernel-dev-6752ab4a9c30d5411b2dfdb251a3f1cb18aae487.zip op-kernel-dev-6752ab4a9c30d5411b2dfdb251a3f1cb18aae487.tar.gz | |
tracing: Deprecate tracing_enabled for tracing_on
tracing_enabled should not be used, it is heavy weight and does not
do much in helping lower the overhead.
tracing_on should be used instead. Warn users to use tracing_on
when tracing_enabled is used as it will soon be removed from the
tracing directory.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index dc53ecb..8dc8da6 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2710,6 +2710,10 @@ tracing_ctrl_write(struct file *filp, const char __user *ubuf, mutex_lock(&trace_types_lock); if (tracer_enabled ^ val) { + + /* Only need to warn if this is used to change the state */ + WARN_ONCE(1, "tracing_enabled is deprecated. Use tracing_on"); + if (val) { tracer_enabled = 1; if (current_trace->start) |
