From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753713Ab3CKHO5 (ORCPT ); Mon, 11 Mar 2013 03:14:57 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:26938 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753650Ab3CKHOy (ORCPT ); Mon, 11 Mar 2013 03:14:54 -0400 Message-ID: <513D8449.4090003@huawei.com> Date: Mon, 11 Mar 2013 15:14:17 +0800 From: "zhangwei(Jovi)" User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" , Steven Rostedt , Frederic Weisbecker , Ingo Molnar Subject: [PATCH 11/13] tracing: export syscall_nr_to_meta function Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.66.58.241] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently syscall meta table is important for kernel syscall tracing, even mandatory, external modules may need this meta info when perform syscall tracing(like ktap), so export it. Instead of export variable syscalls_metadata, export function syscall_nr_to_meta is more safe. Signed-off-by: zhangwei(Jovi) --- include/trace/syscall.h | 2 ++ kernel/trace/trace_syscalls.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 84bc419..3d88f63 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -31,4 +31,6 @@ struct syscall_metadata { struct ftrace_event_call *exit_event; }; +struct syscall_metadata *syscall_nr_to_meta(int nr); + #endif /* _TRACE_SYSCALL_H */ diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index d24a84c..63433f9 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -102,13 +102,14 @@ find_syscall_meta(unsigned long syscall) return NULL; } -static struct syscall_metadata *syscall_nr_to_meta(int nr) +struct syscall_metadata *syscall_nr_to_meta(int nr) { if (!syscalls_metadata || nr >= NR_syscalls || nr < 0) return NULL; return syscalls_metadata[nr]; } +EXPORT_SYMBOL_GPL(syscall_nr_to_meta); static enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags, -- 1.7.9.7