From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933651AbbI3TSS (ORCPT ); Wed, 30 Sep 2015 15:18:18 -0400 Received: from mga11.intel.com ([192.55.52.93]:36699 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932883AbbI3TKf (ORCPT ); Wed, 30 Sep 2015 15:10:35 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,613,1437462000"; d="scan'208";a="781188079" From: Tom Zanussi To: rostedt@goodmis.org Cc: daniel.wagner@bmw-carit.de, masami.hiramatsu.pt@hitachi.com, namhyung@kernel.org, josh@joshtriplett.org, andi@firstfloor.org, mathieu.desnoyers@efficios.com, peterz@infradead.org, linux-kernel@vger.kernel.org, Tom Zanussi Subject: [PATCH v10 05/26] tracing: Add get_syscall_name() Date: Wed, 30 Sep 2015 14:09:51 -0500 Message-Id: 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 ea89515..783f620 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1332,8 +1332,13 @@ int perf_ftrace_event_register(struct trace_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 7d567a4..004c111 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