From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755661AbZFWSbm (ORCPT ); Tue, 23 Jun 2009 14:31:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753788AbZFWSbZ (ORCPT ); Tue, 23 Jun 2009 14:31:25 -0400 Received: from mx2.redhat.com ([66.187.237.31]:39322 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755502AbZFWSbY (ORCPT ); Tue, 23 Jun 2009 14:31:24 -0400 Date: Tue, 23 Jun 2009 14:28:57 -0400 From: Jason Baron To: linux-kernel@vger.kernel.org Cc: fweisbec@gmail.com, mingo@elte.hu, laijs@cn.fujitsu.com, rostedt@goodmis.org, peterz@infradead.org, mathieu.desnoyers@polymtl.ca, jiayingz@google.com, mbligh@google.com, roland@redhat.com, fche@redhat.com, lizf@cn.fujitsu.com Message-Id: In-Reply-To: References: Subject: [PATCH 1/7] V2 add syscall tracepoints Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new function to support translating a syscall name to number at runtime. This allows the syscall event tracer to map syscall names to number. Signed-off-by: Jason Baron Acked-by: Frederic Weisbecker --- arch/x86/kernel/ftrace.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index b79c553..b2374db 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -502,6 +502,22 @@ struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } +int syscall_name_to_nr(char *name) +{ + int i; + + if (!syscalls_metadata) + return -1; + + for (i = 0; i < FTRACE_SYSCALL_MAX; i++) { + if (syscalls_metadata[i]) { + if (!strcmp(syscalls_metadata[i]->name, name)) + return i; + } + } + return -1; +} + void arch_init_ftrace_syscalls(void) { int i; -- 1.6.0.6