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>

diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c
index 1cc55c5..a41fed4 100644 (file)
--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -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);

diff --git a/kernel/trace/trace_dynevent.h b/kernel/trace/trace_dynevent.h
index 8c33406..4689813 100644 (file)
--- a/kernel/trace/trace_dynevent.h
+++ b/kernel/trace/trace_dynevent.h
@@ -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 */

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index ca6b0df..65e7d07 100644 (file)
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -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);
 

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index eac6344..e8f7243 100644 (file)
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -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);
 

diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index ac799ab..2862e68 100644 (file)
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -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);