[PATCH 04/12] libtracefs: Remove redundant kprobes APIs

["Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>]

The newly introduced API tracefs_kprobe_destroy() can be used to clear a
specific kprobe or all kprobes from the system. These legacy APIs are
removed as redundant:
 tracefs_kprobe_clear_all();
 tracefs_kprobe_clear_probe();

There is one functionality, missing in the new API - clearing all
kprobes from specific system only. If this is needed,
tracefs_kprobe_destroy() can be extended with that use case.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 include/tracefs.h     |  2 --
 src/tracefs-kprobes.c | 62 -------------------------------------------
 2 files changed, 64 deletions(-)

diff --git a/include/tracefs.h b/include/tracefs.h
index e7d545c..c7b9179 100644
--- a/include/tracefs.h
+++ b/include/tracefs.h
@@ -262,8 +262,6 @@ int tracefs_kretprobe_raw(const char *system, const char *event,
 char **tracefs_kprobes_get(enum tracefs_kprobe_type type);
 enum tracefs_kprobe_type tracefs_kprobe_info(const char *group, const char *event,
 					     char **type, char **addr, char **format);
-int tracefs_kprobe_clear_all(bool force);
-int tracefs_kprobe_clear_probe(const char *system, const char *event, bool force);
 
 enum tracefs_hist_key_type {
 	TRACEFS_HIST_KEY_NORMAL = 0,
diff --git a/src/tracefs-kprobes.c b/src/tracefs-kprobes.c
index 80dc327..1e08b75 100644
--- a/src/tracefs-kprobes.c
+++ b/src/tracefs-kprobes.c
@@ -542,68 +542,6 @@ static int kprobe_clear_probes(const char *group, bool force)
 	return ret;
 }
 
-/**
- * tracefs_kprobe_clear_all - clear kprobe events
- * @force: Will attempt to disable all kprobe events and clear them
- *
- * Will remove all defined kprobe events. If any of them are enabled,
- * and @force is not set, then it will error with -1 and errno to be
- * EBUSY. If @force is set, then it will attempt to disable all the kprobe
- * events in all instances, and try again.
- *
- * Returns zero on success, -1 otherwise.
- */
-int tracefs_kprobe_clear_all(bool force)
-{
-	if (tracefs_instance_file_clear(NULL, KPROBE_EVENTS) == 0)
-		return 0;
-
-	if (!force)
-		return -1;
-
-	/* Attempt to disable all kprobe events */
-	return kprobe_clear_probes(NULL, force);
-}
-
-/**
- * tracefs_kprobe_clear_all - clear kprobe events
- * @system: System to clear (NULL means default)
- * @event: Name of probe to clear in system (NULL for all probes in system)
- * @force: Will attempt to disable all kprobe events and clear them
- *
- * Will remove the kprobes that match the @system and @event. If @system
- * is NULL, then "kprobes" is used and will ignore all other system
- * groups of kprobes. The @event is NULL then all events under the given
- * @system are removed, otherwise only the event that matches.
- *
- * Returns zero on success, -1 otherwise.
- */
-int tracefs_kprobe_clear_probe(const char *system, const char *event, bool force)
-{
-	char **instance_list;
-	int ret;
-
-	if (!system)
-		system = "kprobes";
-
-	if (!event)
-		return kprobe_clear_probes(system, force);
-
-	/*
-	 * Since we know we are disabling a specific event, try
-	 * to disable it first before clearing it.
-	 */
-	if (force) {
-		instance_list = tracefs_instances(NULL);
-		disable_events(system, event, instance_list);
-		tracefs_list_free(instance_list);
-	}
-
-	ret = clear_kprobe(system, event);
-
-	return ret < 0 ? -1 : 0;
-}
-
 /**
  * tracefs_kprobe_destroy - Remove a kprobe or kretprobe from the system
  * @kprobe: A kprobe context, describing the kprobe that will be deleted.
-- 
2.31.1