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| author | Steven Rostedt <srostedt@redhat.com> | 2009-03-05 21:35:29 -0500 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-03-05 21:46:44 -0500 |
| commit | 770cb24345c0f6e0d47bd2b94aa6d67bea6f8b54 (patch) | |
| tree | ec76651c686c02249c1455446801cf2b9d823879 /kernel/trace/Makefile | |
| parent | 33b0c229e3abeae00493ed1d6f0b07191977a0a2 (diff) | |
| download | op-kernel-dev-770cb24345c0f6e0d47bd2b94aa6d67bea6f8b54.zip op-kernel-dev-770cb24345c0f6e0d47bd2b94aa6d67bea6f8b54.tar.gz | |
tracing: add format files for ftrace default entries
Impact: allow user apps to read binary format of basic ftrace entries
Currently, only defined raw events export their formats so a binary
reader can parse them. There's no reason that the default ftrace entries
can't export their formats.
This patch adds a subsystem called "ftrace" in the events directory
that includes the ftrace entries for basic ftrace recorded items.
These only have three files in the events directory:
type : printf
available_types : printf
format : format for the event entry
For example:
# cat /debug/tracing/events/ftrace/wakeup/format
name: wakeup
ID: 3
format:
field:unsigned char type; offset:0; size:1;
field:unsigned char flags; offset:1; size:1;
field:unsigned char preempt_count; offset:2; size:1;
field:int pid; offset:4; size:4;
field:int tgid; offset:8; size:4;
field:unsigned int prev_pid; offset:12; size:4;
field:unsigned char prev_prio; offset:16; size:1;
field:unsigned char prev_state; offset:17; size:1;
field:unsigned int next_pid; offset:20; size:4;
field:unsigned char next_prio; offset:24; size:1;
field:unsigned char next_state; offset:25; size:1;
field:unsigned int next_cpu; offset:28; size:4;
print fmt: "%u:%u:%u ==+ %u:%u:%u [%03u]"
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/trace/Makefile')
| -rw-r--r-- | kernel/trace/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index c931fe0..f44736c 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -41,5 +41,6 @@ obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o obj-$(CONFIG_EVENT_TRACER) += trace_events.o obj-$(CONFIG_EVENT_TRACER) += events.o +obj-$(CONFIG_EVENT_TRACER) += trace_export.o libftrace-y := ftrace.o |
