uprobes/tracing: Introduce is_trace_uprobe_enabled()

probe_event_enable/disable() check tu->consumer != NULL to avoid the
wrong uprobe_register/unregister().

We are going to kill this pointer and "struct uprobe_trace_consumer",
so we add the new helper, is_trace_uprobe_enabled(), which can rely
on TP_FLAG_TRACE/TP_FLAG_PROFILE instead.

Note: the current logic doesn't look optimal, it is not clear why
TP_FLAG_TRACE/TP_FLAG_PROFILE are mutually exclusive, we will probably
change this later.

Also kill the unused TP_FLAG_UPROBE.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>

This commit is contained in:

Oleg Nesterov

2013-01-31 19:15:30 +01:00

parent 7e4e28c539

commit b64b007797

2 changed files with 7 additions and 3 deletions

									
										kernel/trace/trace_probe.h
									
		-1
	
												View File
												
				@@ -66,7 +66,6 @@

				#define TP_FLAG_TRACE		1

				#define TP_FLAG_PROFILE		2

				#define TP_FLAG_REGISTERED	4

				#define TP_FLAG_UPROBE		8

				/* data_rloc: data relative location, compatible with u32 */