From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752305AbaC0EyS (ORCPT ); Thu, 27 Mar 2014 00:54:18 -0400 Received: from mga02.intel.com ([134.134.136.20]:62662 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750949AbaC0EyP (ORCPT ); Thu, 27 Mar 2014 00:54:15 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,739,1389772800"; d="scan'208";a="481082813" From: Tom Zanussi To: rostedt@goodmis.org Cc: linux-kernel@vger.kernel.org, Tom Zanussi Subject: [PATCH 3/5] tracing: Add get_syscall_name() Date: Wed, 26 Mar 2014 23:54:05 -0500 Message-Id: <3eb506030d4f1187376d62847eef0327edd84ed8.1395894625.git.tom.zanussi@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 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 | 9 +++++++++ kernel/trace/trace_syscalls.c | 11 +++++++++++ 2 files changed, 20 insertions(+) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 9032cf3..457fb4f 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1277,4 +1277,13 @@ int perf_ftrace_event_register(struct ftrace_event_call *call, #define perf_ftrace_event_register NULL #endif +#ifdef CONFIG_FTRACE_SYSCALLS +const char *get_syscall_name(int syscall); +#else +static inline const char *get_syscall_name(int syscall) +{ + return NULL; +} +#endif /* CONFIG_FTRACE_SYSCALLS */ + #endif /* _LINUX_KERNEL_TRACE_H */ diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 759d5e0..1abb3396 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) -- 1.8.3.1