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authorLai Jiangshan <laijs@cn.fujitsu.com>2008-10-28 10:51:53 +0800
committerIngo Molnar <mingo@elte.hu>2008-11-03 10:28:52 +0100
commit127cafbb276266b1b8da967bfe25a062ab1d42ab (patch)
tree8f7183fa6f9a68b2bd3b3734da3575e4eff46a1d /include/linux/tracepoint.h
parent19dba33c43a2f0f2aa727ae075ec3b11330775ef (diff)
downloadlinux-linaro-stable-127cafbb276266b1b8da967bfe25a062ab1d42ab.tar.gz
tracepoint: introduce *_noupdate APIs.
Impact: add new tracepoint APIs to allow the batched registration of probes new APIs separate tracepoint_probe_register(), tracepoint_probe_unregister() into 2 steps. The first step of them is just update tracepoint_entry, not connect or disconnect. this patch introduces tracepoint_probe_update_all() for update all. these APIs are very useful for registering lots of probes but just updating once. Another very important thing is that *_noupdate APIs do not require module_mutex. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/tracepoint.h')
-rw-r--r--include/linux/tracepoint.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index c5bb39c7a770..63064e9403f2 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -112,6 +112,10 @@ extern int tracepoint_probe_register(const char *name, void *probe);
*/
extern int tracepoint_probe_unregister(const char *name, void *probe);
+extern int tracepoint_probe_register_noupdate(const char *name, void *probe);
+extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe);
+extern void tracepoint_probe_update_all(void);
+
struct tracepoint_iter {
struct module *module;
struct tracepoint *tracepoint;