Martin Schwidefsky 419123f900 s390/spinlock: do not yield to a CPU in udelay/mdelay ... It does not make sense to try to relinquish the time slice with diag 0x9c to a CPU in a state that does not allow to schedule the CPU. The scenario where this can happen is a CPU waiting in udelay/mdelay while holding a spin-lock. Add a CIF bit to tag a CPU in enabled wait and use it to detect that the yield of a CPU will not be successful and skip the diagnose call. Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2015-11-27 09:24:18 +01:00
..
delay.c	s390/udelay: make udelay have busy loop semantics	2015-10-14 14:32:13 +02:00
find.c	s390/bitops: remove 31 bit related comments	2015-10-14 14:32:15 +02:00
Makefile
mem.S
probes.c
spinlock.c	s390/spinlock: do not yield to a CPU in udelay/mdelay	2015-11-27 09:24:18 +01:00
string.c
uaccess.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-03 15:46:07 -07:00