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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2013-11-07 04:42:48 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-02-20 18:13:10 +0100 |
| commit | 607e2ea167e56db84387f3ab97e59a862e101cab (patch) | |
| tree | fc464e41f7a6f26aa04684bd1f92ea5182b52646 /kernel/trace/trace_nop.c | |
| parent | tracing: Pass trace_array to flag_changed callback (diff) | |
| download | linux-607e2ea167e56db84387f3ab97e59a862e101cab.tar.xz linux-607e2ea167e56db84387f3ab97e59a862e101cab.zip | |
tracing: Set up infrastructure to allow tracers for instances
Currently the tracers (function, function_graph, irqsoff, etc) can only
be used by the top level tracing directory (not for instances).
This sets up the infrastructure to allow instances to be able to
run a separate tracer apart from the what the top level tracing is
doing.
As tracers need to adapt for being used by instances, the tracers
must flag if they can be used by instances or not. Currently only the
'nop' tracer can be used by all instances.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_nop.c')
| -rw-r--r-- | kernel/trace/trace_nop.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_nop.c b/kernel/trace/trace_nop.c index f3984098c0d7..69a5cc94c01a 100644 --- a/kernel/trace/trace_nop.c +++ b/kernel/trace/trace_nop.c @@ -96,6 +96,7 @@ struct tracer nop_trace __read_mostly = .selftest = trace_selftest_startup_nop, #endif .flags = &nop_flags, - .set_flag = nop_set_flag + .set_flag = nop_set_flag, + .allow_instances = true, }; |