lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ftrace: add trace pipe header pluggin

Browse Source 
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>
This commit is contained in:
Steven Rostedt
2008-05-12 21:21:01 +02:00
committed by Thomas Gleixner
parent 53d0aa7730
commit 107bad8bef
2 changed files with 36 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/trace/trace.h
View File

@@ -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];