diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-08-29 12:44:40 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-09 08:53:27 +0200 |
| commit | 070b7be633dc33c0899e8c934b4d5fad046b06e8 (patch) | |
| tree | 4aa06300e711c8079754745e34852ac12c4dbfbf /arch/s390/kernel/time.c | |
| parent | Documentation/kprobes: add s390 to list of supported architectures (diff) | |
| download | linux-070b7be633dc33c0899e8c934b4d5fad046b06e8.tar.xz linux-070b7be633dc33c0899e8c934b4d5fad046b06e8.zip | |
s390/vdso: replace stck with stcke
If gettimeofday / clock_gettime are called multiple times in a row
the STCK instruction will stall until a difference in the result is
visible. This unnecessarily slows down the vdso calls, use stcke
instead of stck to get rid of the stall.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/time.c')
0 files changed, 0 insertions, 0 deletions