X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fwigyori.git;a=blobdiff_plain;f=config%2FConfig-kernel.in;h=f7ba2b67230c31c06a41906ba957fc9ebc520fc0;hp=0cbe5e8351a5a80171c0aa6f72c4782f44a3a0be;hb=69d179ec81dacf92e1f693783c4ddcbf5a68b231;hpb=fc166931fae87be0f98ea9e0c74b0f33ddd11113

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index 0cbe5e8351..f7ba2b6723 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -6,6 +6,7 @@
 
 config KERNEL_BUILD_USER
 	string "Custom Kernel Build User Name"
+	default "builder" if BUILDBOT
 	default ""
 	help
 	  Sets the Kernel build user string, which for example will be returned
@@ -14,6 +15,7 @@ config KERNEL_BUILD_USER
 
 config KERNEL_BUILD_DOMAIN
 	string "Custom Kernel Build Domain Name"
+	default "buildhost" if BUILDBOT
 	default ""
 	help
 	  Sets the Kernel build domain string, which for example will be
@@ -31,7 +33,7 @@ config KERNEL_CRASHLOG
 
 config KERNEL_SWAP
 	bool "Support for paging of anonymous memory (swap)"
-	default y
+	default y if !SMALL_FLASH
 
 config KERNEL_DEBUG_FS
 	bool "Compile the kernel with debug filesystem enabled"
@@ -42,16 +44,39 @@ config KERNEL_DEBUG_FS
 	  write to these files. Many common debugging facilities, such as
 	  ftrace, require the existence of debugfs.
 
+# remove KERNEL_MIPS_FPU_EMULATOR after kernel 4.14 and 4.14 are gone
 config KERNEL_MIPS_FPU_EMULATOR
 	bool "Compile the kernel with MIPS FPU Emulator"
 	default y if TARGET_pistachio
 	depends on (mips || mipsel || mips64 || mips64el)
 
+config KERNEL_MIPS_FP_SUPPORT
+	bool
+	default y if KERNEL_MIPS_FPU_EMULATOR
+
 config KERNEL_ARM_PMU
 	bool
 	default n
 	depends on (arm || aarch64)
 
+config KERNEL_X86_VSYSCALL_EMULATION
+	bool "Enable vsyscall emulation"
+	default n
+	depends on x86_64
+	help
+	  This enables emulation of the legacy vsyscall page.  Disabling
+	  it is roughly equivalent to booting with vsyscall=none, except
+	  that it will also disable the helpful warning if a program
+	  tries to use a vsyscall.  With this option set to N, offending
+	  programs will just segfault, citing addresses of the form
+	  0xffffffffff600?00.
+
+	  This option is required by many programs built before 2013, and
+	  care should be used even with newer programs if set to N.
+
+	  Disabling this option saves about 7K of kernel size and
+	  possibly 4K of additional runtime pagetable memory.
+
 config KERNEL_PERF_EVENTS
 	bool "Compile the kernel with performance events and counters"
 	default n
@@ -65,6 +90,147 @@ config KERNEL_PROFILING
 	  Enable the extended profiling support mechanisms used by profilers such
 	  as OProfile.
 
+config KERNEL_UBSAN
+	bool "Compile the kernel with undefined behaviour sanity checker"
+	help
+	  This option enables undefined behaviour sanity checker
+	  Compile-time instrumentation is used to detect various undefined
+	  behaviours in runtime. Various types of checks may be enabled
+	  via boot parameter ubsan_handle
+	  (see: Documentation/dev-tools/ubsan.rst).
+
+config KERNEL_UBSAN_SANITIZE_ALL
+	bool "Enable instrumentation for the entire kernel"
+	depends on KERNEL_UBSAN
+	default y
+	help
+	  This option activates instrumentation for the entire kernel.
+	  If you don't enable this option, you have to explicitly specify
+	  UBSAN_SANITIZE := y for the files/directories you want to check for UB.
+	  Enabling this option will get kernel image size increased
+	  significantly.
+
+config KERNEL_UBSAN_ALIGNMENT
+	bool "Enable checking of pointers alignment"
+	depends on KERNEL_UBSAN
+	help
+	  This option enables detection of unaligned memory accesses.
+	  Enabling this option on architectures that support unaligned
+	  accesses may produce a lot of false positives.
+
+config KERNEL_UBSAN_NULL
+	bool "Enable checking of null pointers"
+	depends on KERNEL_UBSAN
+	help
+	  This option enables detection of memory accesses via a
+	  null pointer.
+
+config KERNEL_KASAN
+	bool "Compile the kernel with KASan: runtime memory debugger"
+	select KERNEL_SLUB_DEBUG
+	depends on (x86_64 || aarch64)
+	help
+	  Enables kernel address sanitizer - runtime memory debugger,
+	  designed to find out-of-bounds accesses and use-after-free bugs.
+	  This is strictly a debugging feature and it requires a gcc version
+	  of 4.9.2 or later. Detection of out of bounds accesses to stack or
+	  global variables requires gcc 5.0 or later.
+	  This feature consumes about 1/8 of available memory and brings about
+	  ~x3 performance slowdown.
+	  For better error detection enable CONFIG_STACKTRACE.
+	  Currently CONFIG_KASAN doesn't work with CONFIG_DEBUG_SLAB
+	  (the resulting kernel does not boot).
+
+config KERNEL_KASAN_EXTRA
+	bool "KAsan: extra checks"
+	depends on KERNEL_KASAN && KERNEL_DEBUG_KERNEL
+	help
+	  This enables further checks in the kernel address sanitizer, for now
+	  it only includes the address-use-after-scope check that can lead
+	  to excessive kernel stack usage, frame size warnings and longer
+	  compile time.
+	  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 has more
+
+
+choice
+	prompt "Instrumentation type"
+	depends on KERNEL_KASAN
+	default KERNEL_KASAN_OUTLINE
+
+config KERNEL_KASAN_OUTLINE
+	bool "Outline instrumentation"
+	help
+	  Before every memory access compiler insert function call
+	  __asan_load*/__asan_store*. These functions performs check
+	  of shadow memory. This is slower than inline instrumentation,
+	  however it doesn't bloat size of kernel's .text section so
+	  much as inline does.
+
+config KERNEL_KASAN_INLINE
+	bool "Inline instrumentation"
+	help
+	  Compiler directly inserts code checking shadow memory before
+	  memory accesses. This is faster than outline (in some workloads
+	  it gives about x2 boost over outline instrumentation), but
+	  make kernel's .text size much bigger.
+	  This requires a gcc version of 5.0 or later.
+
+endchoice
+
+config KERNEL_KCOV
+	bool "Compile the kernel with code coverage for fuzzing"
+	select KERNEL_DEBUG_FS
+	help
+	  KCOV exposes kernel code coverage information in a form suitable
+	  for coverage-guided fuzzing (randomized testing).
+
+	  If RANDOMIZE_BASE is enabled, PC values will not be stable across
+	  different machines and across reboots. If you need stable PC values,
+	  disable RANDOMIZE_BASE.
+
+	  For more details, see Documentation/kcov.txt.
+
+config KERNEL_KCOV_ENABLE_COMPARISONS
+	bool "Enable comparison operands collection by KCOV"
+	depends on KERNEL_KCOV
+	help
+	  KCOV also exposes operands of every comparison in the instrumented
+	  code along with operand sizes and PCs of the comparison instructions.
+	  These operands can be used by fuzzing engines to improve the quality
+	  of fuzzing coverage.
+
+config KERNEL_KCOV_INSTRUMENT_ALL
+	bool "Instrument all code by default"
+	depends on KERNEL_KCOV
+	default y if KERNEL_KCOV
+	help
+	  If you are doing generic system call fuzzing (like e.g. syzkaller),
+	  then you will want to instrument the whole kernel and you should
+	  say y here. If you are doing more targeted fuzzing (like e.g.
+	  filesystem fuzzing with AFL) then you will want to enable coverage
+	  for more specific subsets of files, and should say n here.
+
+config KERNEL_TASKSTATS
+	bool "Compile the kernel with task resource/io statistics and accounting"
+	default n
+	help
+	  Enable the collection and publishing of task/io statistics and
+	  accounting.  Enable this option to enable i/o monitoring in system
+	  monitors.
+
+if KERNEL_TASKSTATS
+
+	config KERNEL_TASK_DELAY_ACCT
+		def_bool y
+
+	config KERNEL_TASK_IO_ACCOUNTING
+		def_bool y
+
+	config KERNEL_TASK_XACCT
+		def_bool y
+
+endif
+
 config KERNEL_KALLSYMS
 	bool "Compile the kernel with symbol table information"
 	default y if !SMALL_FLASH
@@ -112,7 +278,7 @@ config KERNEL_DEBUG_KERNEL
 
 config KERNEL_DEBUG_INFO
 	bool "Compile the kernel with debug information"
-	default y
+	default y if !SMALL_FLASH
 	select KERNEL_DEBUG_KERNEL
 	help
 	  This will compile your kernel and modules with debug information.
@@ -171,17 +337,21 @@ config KERNEL_KPROBE_EVENT
 	bool
 	default y if KERNEL_KPROBES
 
+config KERNEL_KPROBE_EVENTS
+	bool
+	default y if KERNEL_KPROBES
+
 config KERNEL_AIO
 	bool "Compile the kernel with asynchronous IO support"
-	default n
+	default y if !SMALL_FLASH
 
 config KERNEL_FHANDLE
 	bool "Compile the kernel with support for fhandle syscalls"
-	default n
+	default y if !SMALL_FLASH
 
 config KERNEL_FANOTIFY
 	bool "Compile the kernel with modern file notification support"
-	default n
+	default y if !SMALL_FLASH
 
 config KERNEL_BLK_DEV_BSG
 	bool "Compile the kernel with SCSI generic v4 support for any block device"
@@ -205,13 +375,81 @@ config KERNEL_COREDUMP
 config KERNEL_ELF_CORE
 	bool "Enable process core dump support"
 	select KERNEL_COREDUMP
-	default y
+	default y if !SMALL_FLASH
 
 config KERNEL_PROVE_LOCKING
 	bool "Enable kernel lock checking"
 	select KERNEL_DEBUG_KERNEL
 	default n
 
+config KERNEL_LOCKUP_DETECTOR
+	bool "Compile the kernel with detect Hard and Soft Lockups"
+	depends on KERNEL_DEBUG_KERNEL
+	help
+	  Say Y here to enable the kernel to act as a watchdog to detect
+	  hard and soft lockups.
+
+	  Softlockups are bugs that cause the kernel to loop in kernel
+	  mode for more than 20 seconds, without giving other tasks a
+	  chance to run.  The current stack trace is displayed upon
+	  detection and the system will stay locked up.
+
+	  Hardlockups are bugs that cause the CPU to loop in kernel mode
+	  for more than 10 seconds, without letting other interrupts have a
+	  chance to run.  The current stack trace is displayed upon detection
+	  and the system will stay locked up.
+
+	  The overhead should be minimal.  A periodic hrtimer runs to
+	  generate interrupts and kick the watchdog task every 4 seconds.
+	  An NMI is generated every 10 seconds or so to check for hardlockups.
+
+	  The frequency of hrtimer and NMI events and the soft and hard lockup
+	  thresholds can be controlled through the sysctl watchdog_thresh.
+
+config KERNEL_DETECT_HUNG_TASK
+	bool "Compile the kernel with detect Hung Tasks"
+	depends on KERNEL_DEBUG_KERNEL
+	default KERNEL_LOCKUP_DETECTOR
+	help
+	  Say Y here to enable the kernel to detect "hung tasks",
+	  which are bugs that cause the task to be stuck in
+	  uninterruptible "D" state indefinitely.
+
+	  When a hung task is detected, the kernel will print the
+	  current stack trace (which you should report), but the
+	  task will stay in uninterruptible state. If lockdep is
+	  enabled then all held locks will also be reported. This
+	  feature has negligible overhead.
+
+config KERNEL_WQ_WATCHDOG
+	bool "Compile the kernel with detect Workqueue Stalls"
+	depends on KERNEL_DEBUG_KERNEL
+	help
+	  Say Y here to enable stall detection on workqueues.  If a
+	  worker pool doesn't make forward progress on a pending work
+	  item for over a given amount of time, 30s by default, a
+	  warning message is printed along with dump of workqueue
+	  state.  This can be configured through kernel parameter
+	  "workqueue.watchdog_thresh" and its sysfs counterpart.
+
+config KERNEL_DEBUG_ATOMIC_SLEEP
+	bool "Compile the kernel with sleep inside atomic section checking"
+	depends on KERNEL_DEBUG_KERNEL
+	help
+	  If you say Y here, various routines which may sleep will become very
+	  noisy if they are called inside atomic sections: when a spinlock is
+	  held, inside an rcu read side critical section, inside preempt disabled
+	  sections, inside an interrupt, etc...
+
+config KERNEL_DEBUG_VM
+	bool "Compile the kernel with debug VM"
+	depends on KERNEL_DEBUG_KERNEL
+	help
+	  Enable this to turn on extended checks in the virtual-memory system
+          that may impact performance.
+
+	  If unsure, say N.
+
 config KERNEL_PRINTK_TIME
 	bool "Enable printk timestamps"
 	default y
@@ -295,7 +533,7 @@ config KERNEL_ENCRYPTED_KEYS
 
 config KERNEL_CGROUPS
 	bool "Enable kernel cgroups"
-	default n
+	default y if !SMALL_FLASH
 
 if KERNEL_CGROUPS
 
@@ -334,7 +572,7 @@ if KERNEL_CGROUPS
 
 	config KERNEL_CPUSETS
 		bool "Cpuset support"
-		default n
+		default y if !SMALL_FLASH
 		help
 		  This option will let you create and manage CPUSETs which
 		  allow dynamically partitioning a system into sets of CPUs and
@@ -348,14 +586,14 @@ if KERNEL_CGROUPS
 
 	config KERNEL_CGROUP_CPUACCT
 		bool "Simple CPU accounting cgroup subsystem"
-		default n
+		default y if !SMALL_FLASH
 		help
 		  Provides a simple Resource Controller for monitoring the
 		  total CPU consumed by the tasks in a cgroup.
 
 	config KERNEL_RESOURCE_COUNTERS
 		bool "Resource counters"
-		default n
+		default y if !SMALL_FLASH
 		help
 		  This option enables controller independent resource accounting
 		  infrastructure that works with cgroups.
@@ -366,7 +604,7 @@ if KERNEL_CGROUPS
 
 	config KERNEL_MEMCG
 		bool "Memory Resource Controller for Control Groups"
-		default n
+		default y if !SMALL_FLASH
 		depends on KERNEL_RESOURCE_COUNTERS || !LINUX_3_18
 		help
 		  Provides a memory resource controller that manages both anonymous
@@ -424,7 +662,7 @@ if KERNEL_CGROUPS
 
 	config KERNEL_MEMCG_KMEM
 		bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
-		default n
+		default y if !SMALL_FLASH
 		depends on KERNEL_MEMCG
 		help
 		  The Kernel Memory extension for Memory Resource Controller can limit
@@ -445,7 +683,7 @@ if KERNEL_CGROUPS
 
 	menuconfig KERNEL_CGROUP_SCHED
 		bool "Group CPU scheduler"
-		default n
+		default y if !SMALL_FLASH
 		help
 		  This feature lets CPU scheduler recognize task groups and control CPU
 		  bandwidth allocation to such task groups. It uses cgroups to group
@@ -455,7 +693,7 @@ if KERNEL_CGROUPS
 
 		config KERNEL_FAIR_GROUP_SCHED
 			bool "Group scheduling for SCHED_OTHER"
-			default n
+			default y if !SMALL_FLASH
 
 		config KERNEL_CFS_BANDWIDTH
 			bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
@@ -470,7 +708,7 @@ if KERNEL_CGROUPS
 
 		config KERNEL_RT_GROUP_SCHED
 			bool "Group scheduling for SCHED_RR/FIFO"
-			default n
+			default y if !SMALL_FLASH
 			help
 			  This feature lets you explicitly allocate real CPU bandwidth
 			  to task groups. If enabled, it will also make it impossible to
@@ -498,6 +736,20 @@ if KERNEL_CGROUPS
 		  CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
 		  CONFIG_BLK_DEV_THROTTLING=y.
 
+	if KERNEL_BLK_CGROUP
+
+		config KERNEL_CFQ_GROUP_IOSCHED
+			bool "Proportional weight of disk bandwidth in CFQ"
+
+		config KERNEL_BLK_DEV_THROTTLING
+			bool "Enable throttling policy"
+			default y if TARGET_bcm27xx
+
+		config KERNEL_BLK_DEV_THROTTLING_LOW
+			bool "Block throttling .low limit interface support (EXPERIMENTAL)"
+			depends on KERNEL_BLK_DEV_THROTTLING
+	endif
+
 	config KERNEL_DEBUG_BLK_CGROUP
 		bool "Enable Block IO controller debugging"
 		default n
@@ -522,7 +774,7 @@ endif
 
 config KERNEL_NAMESPACES
 	bool "Enable kernel namespaces"
-	default n
+	default y if !SMALL_FLASH
 
 if KERNEL_NAMESPACES
 
@@ -564,51 +816,40 @@ if KERNEL_NAMESPACES
 
 endif
 
-#
-# LXC related symbols
-#
-
-config KERNEL_LXC_MISC
-	bool "Enable miscellaneous LXC related options"
-	default n
-
-if KERNEL_LXC_MISC
+config KERNEL_DEVPTS_MULTIPLE_INSTANCES
+	bool "Support multiple instances of devpts"
+	default y if !SMALL_FLASH
+	help
+	  Enable support for multiple instances of devpts filesystem.
+	  If you want to have isolated PTY namespaces (eg: in containers),
+	  say Y here. Otherwise, say N. If enabled, each mount of devpts
+	  filesystem with the '-o newinstance' option will create an
+	  independent PTY namespace.
+
+config KERNEL_POSIX_MQUEUE
+	bool "POSIX Message Queues"
+	default y if !SMALL_FLASH
+	help
+	  POSIX variant of message queues is a part of IPC. In POSIX message
+	  queues every message has a priority which decides about succession
+	  of receiving it by a process. If you want to compile and run
+	  programs written e.g. for Solaris with use of its POSIX message
+	  queues (functions mq_*) say Y here.
 
-	config KERNEL_DEVPTS_MULTIPLE_INSTANCES
-		bool "Support multiple instances of devpts"
-		default y
-		help
-		  Enable support for multiple instances of devpts filesystem.
-		  If you want to have isolated PTY namespaces (eg: in containers),
-		  say Y here. Otherwise, say N. If enabled, each mount of devpts
-		  filesystem with the '-o newinstance' option will create an
-		  independent PTY namespace.
-
-	config KERNEL_POSIX_MQUEUE
-		bool "POSIX Message Queues"
-		default y
-		help
-		  POSIX variant of message queues is a part of IPC. In POSIX message
-		  queues every message has a priority which decides about succession
-		  of receiving it by a process. If you want to compile and run
-		  programs written e.g. for Solaris with use of its POSIX message
-		  queues (functions mq_*) say Y here.
+	  POSIX message queues are visible as a filesystem called 'mqueue'
+	  and can be mounted somewhere if you want to do filesystem
+	  operations on message queues.
 
-		  POSIX message queues are visible as a filesystem called 'mqueue'
-		  and can be mounted somewhere if you want to do filesystem
-		  operations on message queues.
-
-endif
 
 config KERNEL_SECCOMP_FILTER
 	bool
-	default n
+	default y if !SMALL_FLASH
 
 config KERNEL_SECCOMP
 	bool "Enable seccomp support"
 		depends on !(TARGET_uml)
 		select KERNEL_SECCOMP_FILTER
-		default n
+		default y if !SMALL_FLASH
 		help
 		  Build kernel with support for seccomp.
 
@@ -734,7 +975,7 @@ menu "Filesystem ACL and attr support options"
 		select KERNEL_FS_POSIX_ACL
 		default y if USE_FS_ACL_ATTR
 
-	config KERNEL_HFSPLUG_FS_POSIX_ACL
+	config KERNEL_HFSPLUS_FS_POSIX_ACL
 		bool "Enable POSIX ACL for HFS+ Filesystems"
 		select KERNEL_FS_POSIX_ACL
 		default y if USE_FS_ACL_ATTR
@@ -785,3 +1026,30 @@ config KERNEL_DEVKMEM
 	  Say Y here if you want to support the /dev/kmem device. The
 	  /dev/kmem device is rarely used, but can be used for certain
 	  kind of kernel debugging operations.
+
+config KERNEL_SQUASHFS_FRAGMENT_CACHE_SIZE
+	int "Number of squashfs fragments cached"
+	default 2 if (SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
+	default 3
+
+#
+# compile optimiziation setting
+#
+choice
+	prompt "Compiler optimization level"
+	default KERNEL_CC_OPTIMIZE_FOR_SIZE if SMALL_FLASH
+
+config KERNEL_CC_OPTIMIZE_FOR_PERFORMANCE
+	bool "Optimize for performance"
+	help
+	  This is the default optimization level for the kernel, building
+	  with the "-O2" compiler flag for best performance and most
+	  helpful compile-time warnings.
+
+config KERNEL_CC_OPTIMIZE_FOR_SIZE
+	bool "Optimize for size"
+	help
+	  Enabling this option will pass "-Os" instead of "-O2" to
+	  your compiler resulting in a smaller kernel.
+
+endchoice