diff options
| author |   Arjan van de Ven <arjan@linux.intel.com> | 2009-09-17 16:11:28 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-09-19 11:42:12 +0200 |
| commit | 6161352142d5fed4cd753b32e5ccde66e705b14e (patch) | |
| tree | d64d0e3e6c44440181ddb5d1bc6884067fee0749 /kernel/trace/power-traces.c | |
| parent | perf: Add a sample_event type to the event_union (diff) | |
| download | linux-dev-6161352142d5fed4cd753b32e5ccde66e705b14e.tar.xz linux-dev-6161352142d5fed4cd753b32e5ccde66e705b14e.zip | |
tracing, perf: Convert the power tracer into an event tracer
This patch converts the existing power tracer into an event tracer,
so that power events (C states and frequency changes) can be
tracked via "perf".
This also removes the perl script that was used to demo the tracer;
its functionality is being replaced entirely with timechart.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090912130542.6d314860@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/power-traces.c')
| -rw-r--r-- | kernel/trace/power-traces.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/trace/power-traces.c b/kernel/trace/power-traces.c new file mode 100644 index 000000000000..e06c6e3d56a3 --- /dev/null +++ b/kernel/trace/power-traces.c @@ -0,0 +1,20 @@ +/* + * Power trace points + * + * Copyright (C) 2009 Arjan van de Ven <arjan@linux.intel.com> + */ + +#include <linux/string.h> +#include <linux/types.h> +#include <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/module.h> +#include <linux/slab.h> + +#define CREATE_TRACE_POINTS +#include <trace/events/power.h> + +EXPORT_TRACEPOINT_SYMBOL_GPL(power_start); +EXPORT_TRACEPOINT_SYMBOL_GPL(power_end); +EXPORT_TRACEPOINT_SYMBOL_GPL(power_frequency); + |