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Fri, 26 May 2017 04:26:22 -0700 From: Leonard Crestez To: Shawn Guo Subject: [PATCH] ARM: imx_v6_v7_defconfig: Explicitly restore CONFIG_DEBUG_FS Date: Fri, 26 May 2017 14:26:06 +0300 Message-ID: <49b2579b9ad2e5ce0a7c4b163dffb5a885ac7dae.1495797565.git.leonard.crestez@nxp.com> X-Mailer: git-send-email 2.7.4 X-EOPAttributedMessage: 0 X-Matching-Connectors: 131402715855823580; (91ab9b29-cfa4-454e-5278-08d120cd25b8); () X-Forefront-Antispam-Report: CIP:192.88.168.50; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(6009001)(336005)(39840400002)(39850400002)(39400400002)(39450400003)(39410400002)(39380400002)(39860400002)(2980300002)(1109001)(1110001)(339900001)(199003)(189002)(9170700003)(498600001)(77096006)(50986999)(118296001)(36756003)(189998001)(5003940100001)(47776003)(104016004)(356003)(105606002)(5660300001)(4326008)(2906002)(8936002)(50226002)(305945005)(86362001)(6916009)(6666003)(85426001)(8656002)(110136004)(53936002)(54906002)(38730400002)(106466001)(33646002)(81166006)(48376002)(50466002)(8676002)(15760500002); 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McKenney" , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org This option was removed by "make savedefconfig" in commit c5054a98bce4 ("ARM: imx_v6_v7_defconfig: Select SMSC_PHY") This happened because CONFIG_DEBUG_FS was implicitly selected by CONFIG_TREE_RCU_TRACE which defaulted to true because CONFIG_RCU_TRACE was enabled by default by commit 961518259b3b ("rcu: Enable RCU tracepoints by default to aid in debugging") Recently however CONFIG_RCU_TRACE was completely removed by commit 6e74c237c410 ("rcu: Remove debugfs tracing") The result is that imx_v6_v7_defconfig no longer includes DEBUG_FS on linux-next since next-20170517. This is bad, DEBUG_FS is extremely useful for kernel introspection and testing. Signed-off-by: Leonard Crestez --- Patch is against next-20170526. Applying it to shawnguo/imx/defconfig and cycling via savedefconfig makes this diff go away. Alternatively maybe DEBUG_FS itself could be made "default y if DEBUG_KERNEL" or similar? arch/arm/configs/imx_v6_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index bf1e7e3..51ca814 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -381,6 +381,7 @@ CONFIG_NLS_ISO8859_1=y CONFIG_NLS_ISO8859_15=m CONFIG_NLS_UTF8=y CONFIG_PRINTK_TIME=y +CONFIG_DEBUG_FS=y CONFIG_MAGIC_SYSRQ=y # CONFIG_SCHED_DEBUG is not set CONFIG_PROVE_LOCKING=y