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author | Ingo Molnar <mingo@elte.hu> | 2009-06-11 15:55:42 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-11 15:55:42 (GMT) |
commit | 940010c5a314a7bd9b498593bc6ba1718ac5aec5 (patch) | |
tree | d141e08ced08c40c6a8e3ab2cdecde5ff14e560f /samples/trace_events/trace-events-sample.c | |
parent | 8dc8e5e8bc0ce00b0f656bf972f67cd8a72759e5 (diff) | |
parent | 991ec02cdca33b03a132a0cacfe6f0aa0be9aa8d (diff) | |
download | linux-fsl-qoriq-940010c5a314a7bd9b498593bc6ba1718ac5aec5.tar.xz |
Merge branch 'linus' into perfcounters/core
Conflicts:
arch/x86/kernel/irqinit.c
arch/x86/kernel/irqinit_64.c
arch/x86/kernel/traps.c
arch/x86/mm/fault.c
include/linux/sched.h
kernel/exit.c
Diffstat (limited to 'samples/trace_events/trace-events-sample.c')
-rw-r--r-- | samples/trace_events/trace-events-sample.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/samples/trace_events/trace-events-sample.c b/samples/trace_events/trace-events-sample.c new file mode 100644 index 0000000..aabc4e9 --- /dev/null +++ b/samples/trace_events/trace-events-sample.c @@ -0,0 +1,52 @@ +#include <linux/module.h> +#include <linux/kthread.h> + +/* + * Any file that uses trace points, must include the header. + * But only one file, must include the header by defining + * CREATE_TRACE_POINTS first. This will make the C code that + * creates the handles for the trace points. + */ +#define CREATE_TRACE_POINTS +#include "trace-events-sample.h" + + +static void simple_thread_func(int cnt) +{ + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(HZ); + trace_foo_bar("hello", cnt); +} + +static int simple_thread(void *arg) +{ + int cnt = 0; + + while (!kthread_should_stop()) + simple_thread_func(cnt++); + + return 0; +} + +static struct task_struct *simple_tsk; + +static int __init trace_event_init(void) +{ + simple_tsk = kthread_run(simple_thread, NULL, "event-sample"); + if (IS_ERR(simple_tsk)) + return -1; + + return 0; +} + +static void __exit trace_event_exit(void) +{ + kthread_stop(simple_tsk); +} + +module_init(trace_event_init); +module_exit(trace_event_exit); + +MODULE_AUTHOR("Steven Rostedt"); +MODULE_DESCRIPTION("trace-events-sample"); +MODULE_LICENSE("GPL"); |