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| author | Steven Rostedt <rostedt@goodmis.org> | 2008-05-12 21:21:01 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 21:56:29 +0200 |
| commit | 107bad8bef5ab2c3a3bff7648c18c9dc3abdc13b (patch) | |
| tree | 6a7767e093cf3439efb334f6222b9fd5e1d9eb25 /kernel/trace/trace.h | |
| parent | 53d0aa773053ab18287781e25d52c5faf9e0e09e (diff) | |
| download | lwn-107bad8bef5ab2c3a3bff7648c18c9dc3abdc13b.tar.gz lwn-107bad8bef5ab2c3a3bff7648c18c9dc3abdc13b.zip | |
ftrace: add trace pipe header pluggin
This patch adds a method for open_pipe and open_read to the pluggins
so that they can add a header to the trace pipe call.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index c1ec134ac356..ee53d706066f 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -135,9 +135,13 @@ struct tracer { void (*init)(struct trace_array *tr); void (*reset)(struct trace_array *tr); void (*open)(struct trace_iterator *iter); + void (*pipe_open)(struct trace_iterator *iter); void (*close)(struct trace_iterator *iter); void (*start)(struct trace_iterator *iter); void (*stop)(struct trace_iterator *iter); + ssize_t (*read)(struct trace_iterator *iter, + struct file *filp, char __user *ubuf, + size_t cnt, loff_t *ppos); void (*ctrl_update)(struct trace_array *tr); #ifdef CONFIG_FTRACE_STARTUP_TEST int (*selftest)(struct tracer *trace, @@ -160,6 +164,7 @@ struct trace_seq { struct trace_iterator { struct trace_array *tr; struct tracer *trace; + void *private; long last_overrun[NR_CPUS]; long overrun[NR_CPUS]; |