linux-kernel - [PATCH] init/Kconfig: make CHECKPOINT_RESTORE select PROC_PAGE

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Message-Id: <1519714504-28894-1-git-send-email-rppt@linux.vnet.ibm.com>
Date:   Tue, 27 Feb 2018 08:55:04 +0200
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Pavel Emelyanov <xemul@...tuozzo.com>,
        Andrei Vagin <avagin@...tuozzo.com>, crml <criu@...nvz.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: [PATCH] init/Kconfig: make CHECKPOINT_RESTORE select PROC_PAGE_MONITOR

Checkpointing a process requires knowledge about the process memory layout
which is obtained from /proc/<pid>/smaps, /proc/<pid>/pagemap etc.
Make sure these interfaces are available only when
CONFIG_CHECKPOINT_RESTORE=y

Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
---
 init/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/init/Kconfig b/init/Kconfig
index e37f4b2a6445..63c1fd5bc360 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1328,6 +1328,7 @@ config MEMBARRIER
 config CHECKPOINT_RESTORE
 	bool "Checkpoint/restore support" if EXPERT
 	select PROC_CHILDREN
+	select PROC_PAGE_MONITOR
 	default n
 	help
 	  Enables additional kernel features in a sake of checkpoint/restore.
-- 
2.7.4