From 5a958db311c416345a61b7bddc62a5c6c7112c7f Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 2 Oct 2012 11:36:31 -0700 Subject: make CONFIG_EXPERIMENTAL invisible and default This config item has not carried much meaning for a while now and is almost always enabled by default (especially in distro builds). As agreed during the Linux kernel summit, it should be removed. As a first step, remove it from being listed, and default it to on. Once it has been removed from all subsystem Kconfigs, it will be dropped entirely. For items that really are experimental, maintainers should use "default n", optionally include "(EXPERIMENTAL)" in the title, and add language to the help text indicating why the item should be considered experimental. For items that are dangerously experimental, the maintainer is encouraged to follow the above title recommendation, add stronger language to the help text, and optionally use (depending on the extent of the danger, from least to most dangerous): printk(), add_taint(TAINT_WARN), add_taint(TAINT_CRAP), WARN_ON(1), and CONFIG_BROKEN. CC: Greg KH CC: "Eric W. Biederman" CC: Serge Hallyn CC: "Paul E. McKenney" CC: Andrew Morton CC: Frederic Weisbecker Signed-off-by: Kees Cook Acked-by: Serge Hallyn Acked-by: Greg Kroah-Hartman Reviewed-by: Paul E. McKenney --- init/Kconfig | 31 ++----------------------------- 1 file changed, 2 insertions(+), 29 deletions(-) (limited to 'init') diff --git a/init/Kconfig b/init/Kconfig index 7d30240e5bfe..66eefd9ba73c 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -33,35 +33,8 @@ config BUILDTIME_EXTABLE_SORT menu "General setup" config EXPERIMENTAL - bool "Prompt for development and/or incomplete code/drivers" - ---help--- - Some of the various things that Linux supports (such as network - drivers, file systems, network protocols, etc.) can be in a state - of development where the functionality, stability, or the level of - testing is not yet high enough for general use. This is usually - known as the "alpha-test" phase among developers. If a feature is - currently in alpha-test, then the developers usually discourage - uninformed widespread use of this feature by the general public to - avoid "Why doesn't this work?" type mail messages. However, active - testing and use of these systems is welcomed. Just be aware that it - may not meet the normal level of reliability or it may fail to work - in some special cases. Detailed bug reports from people familiar - with the kernel internals are usually welcomed by the developers - (before submitting bug reports, please read the documents - , , , - , and - in the kernel source). - - This option will also make obsoleted drivers available. These are - drivers that have been replaced by something else, and/or are - scheduled to be removed in a future kernel release. - - Unless you intend to help test and develop a feature or driver that - falls into this category, or you have a situation that requires - using these features, you should probably say N here, which will - cause the configurator to present you with fewer choices. If - you say Y here, you will be offered the choice of using features or - drivers that are currently considered to be in the alpha-test phase. + bool + default y config BROKEN bool -- cgit v1.2.3 From 19c92399817995382522c09ca21e8784a028c023 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 2 Oct 2012 11:19:29 -0700 Subject: init: remove depends on CONFIG_EXPERIMENTAL The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: "Eric W. Biederman" CC: Serge Hallyn CC: "Paul E. McKenney" CC: Andrew Morton CC: Frederic Weisbecker Signed-off-by: Kees Cook Acked-by: Serge Hallyn --- init/Kconfig | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) (limited to 'init') diff --git a/init/Kconfig b/init/Kconfig index 66eefd9ba73c..3020d81c05bc 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -220,7 +220,7 @@ config SYSVIPC_SYSCTL config POSIX_MQUEUE bool "POSIX Message Queues" - depends on NET && EXPERIMENTAL + depends on NET ---help--- POSIX variant of message queues is a part of IPC. In POSIX message queues every message has a priority which decides about succession @@ -366,7 +366,7 @@ config BSD_PROCESS_ACCT_V3 at . config TASKSTATS - bool "Export task/process statistics through netlink (EXPERIMENTAL)" + bool "Export task/process statistics through netlink" depends on NET default n help @@ -379,7 +379,7 @@ config TASKSTATS Say N if unsure. config TASK_DELAY_ACCT - bool "Enable per-task delay accounting (EXPERIMENTAL)" + bool "Enable per-task delay accounting" depends on TASKSTATS help Collect information on time spent by a task waiting for system @@ -390,7 +390,7 @@ config TASK_DELAY_ACCT Say N if unsure. config TASK_XACCT - bool "Enable extended accounting over taskstats (EXPERIMENTAL)" + bool "Enable extended accounting over taskstats" depends on TASKSTATS help Collect extended task accounting data and send the data @@ -399,7 +399,7 @@ config TASK_XACCT Say N if unsure. config TASK_IO_ACCOUNTING - bool "Enable per-task storage I/O accounting (EXPERIMENTAL)" + bool "Enable per-task storage I/O accounting" depends on TASK_XACCT help Collect information on the number of bytes of storage I/O which this @@ -853,8 +853,8 @@ config MEMCG_SWAP_ENABLED select this option (if, for some reason, they need to disable it then swapaccount=0 does the trick). config MEMCG_KMEM - bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)" - depends on MEMCG && EXPERIMENTAL + bool "Memory Resource Controller Kernel Memory accounting" + depends on MEMCG depends on SLUB || SLAB help The Kernel Memory extension for Memory Resource Controller can limit @@ -866,7 +866,7 @@ config MEMCG_KMEM config CGROUP_HUGETLB bool "HugeTLB Resource Controller for Control Groups" - depends on RESOURCE_COUNTERS && HUGETLB_PAGE && EXPERIMENTAL + depends on RESOURCE_COUNTERS && HUGETLB_PAGE default n help Provides a cgroup Resource Controller for HugeTLB pages. @@ -905,7 +905,6 @@ config FAIR_GROUP_SCHED config CFS_BANDWIDTH bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED" - depends on EXPERIMENTAL depends on FAIR_GROUP_SCHED default n help @@ -917,7 +916,6 @@ config CFS_BANDWIDTH config RT_GROUP_SCHED bool "Group scheduling for SCHED_RR/FIFO" - depends on EXPERIMENTAL depends on CGROUP_SCHED default n help @@ -999,8 +997,7 @@ config IPC_NS different IPC objects in different namespaces. config USER_NS - bool "User namespace (EXPERIMENTAL)" - depends on EXPERIMENTAL + bool "User namespace" depends on UIDGID_CONVERTED select UIDGID_STRICT_TYPE_CHECKS @@ -1581,7 +1578,7 @@ config MODULE_UNLOAD config MODULE_FORCE_UNLOAD bool "Forced module unloading" - depends on MODULE_UNLOAD && EXPERIMENTAL + depends on MODULE_UNLOAD help This option allows you to force a module to unload, even if the kernel believes it is unsafe: the kernel will remove the module -- cgit v1.2.3 From 9f3b795a626ee79574595e06d1437fe0c7d51d29 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Fri, 1 Feb 2013 20:40:17 +0100 Subject: driver-core: constify data for class_find_device() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław Acked-by: Grant Likely Signed-off-by: Greg Kroah-Hartman --- init/do_mounts.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'init') diff --git a/init/do_mounts.c b/init/do_mounts.c index 1d1b6348f903..a2b49f2c1bd8 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -81,9 +81,9 @@ struct uuidcmp { * * Returns 1 if the device matches, and 0 otherwise. */ -static int match_dev_by_uuid(struct device *dev, void *data) +static int match_dev_by_uuid(struct device *dev, const void *data) { - struct uuidcmp *cmp = data; + const struct uuidcmp *cmp = data; struct hd_struct *part = dev_to_part(dev); if (!part->info) -- cgit v1.2.3