s390/time: use stck clock fast for do_account_vtime

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The last high frequency call site of the STCK instruction is
do_account_vtime. Replace it with the faster STCKF instruction.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2014-10-20 10:24:39 +02:00

parent cac7f24298

commit 1f759bb3a2

1 changed files with 4 additions and 0 deletions

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arch/s390/kernel/vtime.c

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