From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755029AbbCBQB4 (ORCPT ); Mon, 2 Mar 2015 11:01:56 -0500 Received: from mga09.intel.com ([134.134.136.24]:65368 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754947AbbCBQBt (ORCPT ); Mon, 2 Mar 2015 11:01:49 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,676,1418112000"; d="scan'208";a="673926069" From: Tom Zanussi To: rostedt@goodmis.org Cc: masami.hiramatsu.pt@hitachi.com, namhyung@kernel.org, andi@firstfloor.org, ast@plumgrid.com, linux-kernel@vger.kernel.org, Tom Zanussi Subject: [PATCH 03/15] tracing: Add get_syscall_name() Date: Mon, 2 Mar 2015 10:00:56 -0600 Message-Id: <1f77930a1262fd883fc24ff0c79db64acdcf875f.1425310176.git.tom.zanussi@linux.intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a utility function to grab the syscall name from the syscall metadata, given a syscall id. Signed-off-by: Tom Zanussi --- kernel/trace/trace.h | 5 +++++ kernel/trace/trace_syscalls.c | 11 +++++++++++ 2 files changed, 16 insertions(+) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 89dd87a..3d38c2e 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1317,8 +1317,13 @@ int perf_ftrace_event_register(struct ftrace_event_call *call, #ifdef CONFIG_FTRACE_SYSCALLS void init_ftrace_syscalls(void); +const char *get_syscall_name(int syscall); #else static inline void init_ftrace_syscalls(void) { } +static inline const char *get_syscall_name(int syscall) +{ + return NULL; +} #endif #ifdef CONFIG_EVENT_TRACING diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index c6ee36f..35dfcf3 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -106,6 +106,17 @@ static struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } +const char *get_syscall_name(int syscall) +{ + struct syscall_metadata *entry; + + entry = syscall_nr_to_meta(syscall); + if (!entry) + return NULL; + + return entry->name; +} + static enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags, struct trace_event *event) -- 1.9.3