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OpenCloudOS-Kernel
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3 Commits

Author SHA1 Message Date
Heiko Carstens f1c1174fa0 s390/mm: use new mm defines instead of magic values 
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2017-07-26 08:25:09 +02:00
Martin Schwidefsky 249c543b97 s390/vdso: optimize getcpu system call 
Add the CPU number to the per-cpu vdso data page and add the
__kernel_getcpu function to the vdso object to retrieve the
CPU number in user space.

Suggested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2016-01-11 13:01:24 +01:00
Martin Schwidefsky b020632e40 [S390] introduce vdso on s390 
Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for
CLOCK_REALTIME/CLOCK_MONOTONIC.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2008-12-25 13:38:55 +01:00