From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754826AbbBKVKG (ORCPT ); Wed, 11 Feb 2015 16:10:06 -0500 Received: from mail.kernel.org ([198.145.29.136]:38914 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754757AbbBKVKD (ORCPT ); Wed, 11 Feb 2015 16:10:03 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, "Steven Rostedt (Red Hat)" , Andrew Morton , Masami Hiramatsu , Namhyung Kim , Arnaldo Carvalho de Melo Subject: [PATCH 16/21] tools lib api fs: Add {tracefs,debugfs}_configured() functions Date: Wed, 11 Feb 2015 18:09:10 -0300 Message-Id: <1423688955-8094-17-git-send-email-acme@kernel.org> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1423688955-8094-1-git-send-email-acme@kernel.org> References: <1423688955-8094-1-git-send-email-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Steven Rostedt (Red Hat)" Add tracefs_configured() to return true if tracefs is configured in the kernel (succeeds to find tracefs), and debugfs_configured() if debugfs is configured in the kernel (succeeds to find debugfs). Signed-off-by: Steven Rostedt Acked-by: Jiri Olsa Cc: Andrew Morton Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Namhyung Kim Link: http://lkml.kernel.org/r/20150202193553.190606690@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/debugfs.c | 8 ++++++++ tools/lib/api/fs/debugfs.h | 1 + tools/lib/api/fs/findfs.h | 2 ++ tools/lib/api/fs/tracefs.c | 8 ++++++++ tools/lib/api/fs/tracefs.h | 1 + 5 files changed, 20 insertions(+) diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index 07d74b03d828..8305b3e9d48e 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -3,8 +3,11 @@ #include #include #include +#include #include #include +#include +#include #include #include @@ -24,6 +27,11 @@ static const char * const debugfs_known_mountpoints[] = { static bool debugfs_found; +bool debugfs_configured(void) +{ + return debugfs_find_mountpoint() != NULL; +} + /* find the path to the mounted debugfs */ const char *debugfs_find_mountpoint(void) { diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h index 1074ac81358e..455023698d2b 100644 --- a/tools/lib/api/fs/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -11,6 +11,7 @@ #define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR" #endif +bool debugfs_configured(void); const char *debugfs_find_mountpoint(void); char *debugfs_mount(const char *mountpoint); diff --git a/tools/lib/api/fs/findfs.h b/tools/lib/api/fs/findfs.h index 9e7d876791e1..b6f5d05acc42 100644 --- a/tools/lib/api/fs/findfs.h +++ b/tools/lib/api/fs/findfs.h @@ -1,6 +1,8 @@ #ifndef __API_FINDFS_H__ #define __API_FINDFS_H__ +#include + #define _STR(x) #x #define STR(x) _STR(x) diff --git a/tools/lib/api/fs/tracefs.c b/tools/lib/api/fs/tracefs.c index ef40d15821e9..e4aa9688b71e 100644 --- a/tools/lib/api/fs/tracefs.c +++ b/tools/lib/api/fs/tracefs.c @@ -2,8 +2,11 @@ #include #include #include +#include #include #include +#include +#include #include #include @@ -25,6 +28,11 @@ static const char * const tracefs_known_mountpoints[] = { static bool tracefs_found; +bool tracefs_configured(void) +{ + return tracefs_find_mountpoint() != NULL; +} + /* find the path to the mounted tracefs */ const char *tracefs_find_mountpoint(void) { diff --git a/tools/lib/api/fs/tracefs.h b/tools/lib/api/fs/tracefs.h index e6f7f5183c87..da780ac49acb 100644 --- a/tools/lib/api/fs/tracefs.h +++ b/tools/lib/api/fs/tracefs.h @@ -11,6 +11,7 @@ #define PERF_TRACEFS_ENVIRONMENT "PERF_TRACEFS_DIR" #endif +bool tracefs_configured(void); const char *tracefs_find_mountpoint(void); int tracefs_valid_mountpoint(const char *debugfs); char *tracefs_mount(const char *mountpoint); -- 1.9.3