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authorIngo Molnar <mingo@elte.hu>2009-08-13 23:37:26 +0200
committerIngo Molnar <mingo@elte.hu>2009-08-13 23:38:20 +0200
commit60d970c254b95ec7a0fc4c590b510253987b64a0 (patch)
tree3f99d03bf8af498ef57376f65b7c18b9e18b098a
parent19007a67a64f9b3cbbd7024f972654ebf14daade (diff)
tracing: Fix syscall tracing on !HAVE_FTRACE_SYSCALLS architectures
The new syscall_regfunc()/unregfunc() functions rely on the existence of TIF_SYSCALL_FTRACE - but that TIF flag is only offered by HAVE_FTRACE_SYSCALLS. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/tracepoint.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 070a42bb8920..35dd27adb82c 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -579,6 +579,8 @@ __initcall(init_tracepoints);
#endif /* CONFIG_MODULES */
+#ifdef CONFIG_FTRACE_SYSCALLS
+
static DEFINE_MUTEX(regfunc_mutex);
static int sys_tracepoint_refcount;
@@ -615,3 +617,4 @@ void syscall_unregfunc(void)
}
mutex_unlock(&regfunc_mutex);
}
+#endif