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tracing: Fix syscall tracing on !HAVE_FTRACE_SYSCALLS architectures

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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>
This commit is contained in:
Ingo Molnar 2009-08-13 23:37:26 +02:00
parent 19007a67a6
commit 60d970c254
1 changed files with 3 additions and 0 deletions
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3
kernel/tracepoint.c
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@ -579,6 +579,8 @@ __initcall(init_tracepoints);
#endif /* CONFIG_MODULES */ #endif /* CONFIG_MODULES */
#ifdef CONFIG_FTRACE_SYSCALLS
static DEFINE_MUTEX(regfunc_mutex); static DEFINE_MUTEX(regfunc_mutex);
static int sys_tracepoint_refcount; static int sys_tracepoint_refcount;
@ -615,3 +617,4 @@ void syscall_unregfunc(void)
} }
mutex_unlock(&regfunc_mutex); mutex_unlock(&regfunc_mutex);
} }
#endif