s390/vdso: ectg gettime support for CLOCK_THREAD_CPUTIME_ID

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The code to use the ECTG instruction to calculate the cputime for the
current thread is currently used only for the per-thread CPU-clock
with the clockid -2 (PID=0, VIRT=1). Use the same code for the clockid
CLOCK_THREAD_CPUTIME_ID to speed up the more common clockid as well.

Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2013-12-02 14:54:56 +01:00

parent 06aae6834e

commit b5e64b3de7

3 changed files with 7 additions and 2 deletions

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1

arch/s390/kernel/asm-offsets.c

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4

arch/s390/kernel/vdso64/clock_getres.S

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4

arch/s390/kernel/vdso64/clock_gettime.S

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