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tracing/dynevent: Pass extra arguments to match operation 

Pass extra arguments to match operation for checking
exact match. If the event doesn't support exact match,
it will be ignored.

Link: http://lkml.kernel.org/r/156095685930.28024.10405547027475590975.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2019-06-20 00:07:39 +09:00 committed by Steven Rostedt (VMware)
parent cb8e7a8d55
commit 30199137c8
5 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/trace/trace_dynevent.c
View File

@ -47,6 +47,7 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
return -EINVAL;
event++;
}
argc--; argv++;
p = strchr(event, '/');
if (p) {
@ -61,7 +62,8 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
for_each_dyn_event_safe(pos, n) {
if (type && type != pos->ops)
continue;
if (!pos->ops->match(system, event, pos))
if (!pos->ops->match(system, event,
argc, (const char **)argv, pos))
continue;
ret = pos->ops->free(pos);

7
kernel/trace/trace_dynevent.h
View File

@ -31,8 +31,9 @@ struct dyn_event;
* @is_busy: Check whether given event is busy so that it can not be deleted.
* Return true if it is busy, otherwides false.
* @free: Delete the given event. Return 0 if success, otherwides error.
* @match: Check whether given event and system name match this event.
* Return true if it matches, otherwides false.
* @match: Check whether given event and system name match this event. The argc
* and argv is used for exact match. Return true if it matches, otherwides
* false.
*
* Except for @create, these methods are called under holding event_mutex.
*/
@ -43,7 +44,7 @@ struct dyn_event_operations {
bool (*is_busy)(struct dyn_event *ev);
int (*free)(struct dyn_event *ev);
bool (*match)(const char *system, const char *event,
struct dyn_event *ev);
int argc, const char **argv, struct dyn_event *ev);
};
/* Register new dyn_event type -- must be called at first */

4
kernel/trace/trace_events_hist.c
View File

@ -374,7 +374,7 @@ static int synth_event_show(struct seq_file *m, struct dyn_event *ev);
static int synth_event_release(struct dyn_event *ev);
static bool synth_event_is_busy(struct dyn_event *ev);
static bool synth_event_match(const char *system, const char *event,
struct dyn_event *ev);
int argc, const char **argv, struct dyn_event *ev);
static struct dyn_event_operations synth_event_ops = {
.create = synth_event_create,
@ -422,7 +422,7 @@ static bool synth_event_is_busy(struct dyn_event *ev)
}
static bool synth_event_match(const char *system, const char *event,
struct dyn_event *ev)
int argc, const char **argv, struct dyn_event *ev)
{
struct synth_event *sev = to_synth_event(ev);

4
kernel/trace/trace_kprobe.c
View File

@ -39,7 +39,7 @@ static int trace_kprobe_show(struct seq_file *m, struct dyn_event *ev);
static int trace_kprobe_release(struct dyn_event *ev);
static bool trace_kprobe_is_busy(struct dyn_event *ev);
static bool trace_kprobe_match(const char *system, const char *event,
struct dyn_event *ev);
int argc, const char **argv, struct dyn_event *ev);
static struct dyn_event_operations trace_kprobe_ops = {
.create = trace_kprobe_create,
@ -138,7 +138,7 @@ static bool trace_kprobe_is_busy(struct dyn_event *ev)
}
static bool trace_kprobe_match(const char *system, const char *event,
struct dyn_event *ev)
int argc, const char **argv, struct dyn_event *ev)
{
struct trace_kprobe *tk = to_trace_kprobe(ev);

4
kernel/trace/trace_uprobe.c
View File

@ -44,7 +44,7 @@ static int trace_uprobe_show(struct seq_file *m, struct dyn_event *ev);
static int trace_uprobe_release(struct dyn_event *ev);
static bool trace_uprobe_is_busy(struct dyn_event *ev);
static bool trace_uprobe_match(const char *system, const char *event,
struct dyn_event *ev);
int argc, const char **argv, struct dyn_event *ev);
static struct dyn_event_operations trace_uprobe_ops = {
.create = trace_uprobe_create,
@ -285,7 +285,7 @@ static bool trace_uprobe_is_busy(struct dyn_event *ev)
}
static bool trace_uprobe_match(const char *system, const char *event,
struct dyn_event *ev)
int argc, const char **argv, struct dyn_event *ev)
{
struct trace_uprobe *tu = to_trace_uprobe(ev);