Jens Axboe 12db8b6900 entry: Add support for TIF_NOTIFY_SIGNAL ... Add TIF_NOTIFY_SIGNAL handling in the generic entry code, which if set, will return true if signal_pending() is used in a wait loop. That causes an exit of the loop so that notify_signal tracehooks can be run. If the wait loop is currently inside a system call, the system call is restarted once task_work has been processed. In preparation for only having arch_do_signal() handle syscall restarts if _TIF_SIGPENDING isn't set, rename it to arch_do_signal_or_restart(). Pass in a boolean that tells the architecture specific signal handler if it should attempt to get a signal, or just process a potential syscall restart. For !CONFIG_GENERIC_ENTRY archs, add the TIF_NOTIFY_SIGNAL handling to get_signal(). This is done to minimize the needed architecture changes to support this feature. Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Link: https://lore.kernel.org/r/20201026203230.386348-3-axboe@kernel.dk		2020-10-29 09:37:36 +01:00
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autogroup.h
clock.h
coredump.h
cpufreq.h
cputime.h
deadline.h
debug.h	kernel: rename show_stack_loglvl() => show_stack()	2020-06-09 09:39:13 -07:00
hotplug.h
idle.h
init.h
isolation.h	isolcpus: Affine unbound kernel threads to housekeeping cpus	2020-06-15 14:10:03 +02:00
jobctl.h	task_work: teach task_work_add() to do signal_wake_up()	2020-06-30 12:18:08 -06:00
loadavg.h	sched: nohz: stop passing around unused "ticks" parameter.	2020-07-22 10:22:04 +02:00
mm.h	include/linux/sched/mm.h: optimize current_gfp_context()	2020-08-12 10:57:57 -07:00
nohz.h
numa_balancing.h
prio.h
rt.h
signal.h	entry: Add support for TIF_NOTIFY_SIGNAL	2020-10-29 09:37:36 +01:00
smt.h
stat.h
sysctl.h	sched/uclamp: Add a new sysctl to control RT default boost value	2020-07-29 13:51:47 +02:00
task_stack.h
task.h	kernel: add a kernel_wait helper	2020-08-12 10:57:59 -07:00
topology.h	sched: Document arch_scale_*_capacity()	2020-08-01 09:19:43 +02:00
types.h
user.h
wake_q.h
xacct.h