Messages in this thread Patch in this message | | | Date | Wed, 26 Aug 2009 07:21:53 GMT | From | tip-bot for Josh Stone <> | Subject | [tip:tracing/core] tracing: Make syscall tracepoints conditional |
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Commit-ID: 3d27d8cb34fc156beb86de2338ca4029873a5cc6 Gitweb: http://git.kernel.org/tip/3d27d8cb34fc156beb86de2338ca4029873a5cc6 Author: Josh Stone <jistone@redhat.com> AuthorDate: Mon, 24 Aug 2009 14:43:12 -0700 Committer: Frederic Weisbecker <fweisbec@gmail.com> CommitDate: Wed, 26 Aug 2009 00:24:19 +0200
tracing: Make syscall tracepoints conditional
The syscall enter/exit tracepoints are only supported on archs that HAVE_SYSCALL_TRACEPOINTS, so the declarations should be #ifdef'ed. Also, the definition of syscall_regfunc and syscall_unregfunc should depend on this same config, rather than the ftrace-specific one.
Signed-off-by: Josh Stone <jistone@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <1251150194-1713-3-git-send-email-jistone@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
--- include/trace/syscall.h | 4 ++++ kernel/tracepoint.c | 2 +- 2 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 9661dd4..5dcb7e3 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -8,6 +8,8 @@ #include <asm/ptrace.h> +#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS + extern void syscall_regfunc(void); extern void syscall_unregfunc(void); @@ -25,6 +27,8 @@ DECLARE_TRACE_WITH_CALLBACK(syscall_exit, syscall_unregfunc ); +#endif + /* * A syscall entry in the ftrace syscalls array. * diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index be86b9a..9e0a36f 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -576,7 +576,7 @@ __initcall(init_tracepoints); #endif /* CONFIG_MODULES */ -#ifdef CONFIG_FTRACE_SYSCALLS +#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS static DEFINE_MUTEX(regfunc_mutex); static int sys_tracepoint_refcount;
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