diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 28 | ||||
| -rw-r--r-- | init/init_task.c | 3 |
2 files changed, 30 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index cab3ad28ca49..d1c606ec632e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1913,10 +1913,36 @@ config RSEQ If unsure, say Y. +config RSEQ_STATS + default n + bool "Enable lightweight statistics of restartable sequences" if EXPERT + depends on RSEQ && DEBUG_FS + help + Enable lightweight counters which expose information about the + frequency of RSEQ operations via debugfs. Mostly interesting for + kernel debugging or performance analysis. While lightweight it's + still adding code into the user/kernel mode transitions. + + If unsure, say N. + +config RSEQ_DEBUG_DEFAULT_ENABLE + default n + bool "Enable restartable sequences debug mode by default" if EXPERT + depends on RSEQ + help + This enables the static branch for debug mode of restartable + sequences. + + This also can be controlled on the kernel command line via the + command line parameter "rseq_debug=0/1" and through debugfs. + + If unsure, say N. + config DEBUG_RSEQ default n bool "Enable debugging of rseq() system call" if EXPERT - depends on RSEQ && DEBUG_KERNEL + depends on RSEQ && DEBUG_KERNEL && !GENERIC_ENTRY + select RSEQ_DEBUG_DEFAULT_ENABLE help Enable extra debugging checks for the rseq system call. diff --git a/init/init_task.c b/init/init_task.c index d970a847b657..49b13d7c3985 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -250,6 +250,9 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = { #ifdef CONFIG_SECCOMP_FILTER .seccomp = { .filter_count = ATOMIC_INIT(0) }, #endif +#ifdef CONFIG_SCHED_MM_CID + .mm_cid = { .cid = MM_CID_UNSET, }, +#endif }; EXPORT_SYMBOL(init_task); |