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Diffstat (limited to 'arch/s390/kernel/vdso64/clock_gettime.S')
-rw-r--r--arch/s390/kernel/vdso64/clock_gettime.S19
1 files changed, 4 insertions, 15 deletions
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index 9c3b12626dba..5d7b56b49458 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -114,23 +114,12 @@ __kernel_clock_gettime:
br %r14
/* CPUCLOCK_VIRT for this thread */
-9: icm %r0,15,__VDSO_ECTG_OK(%r5)
+9: lghi %r4,0
+ icm %r0,15,__VDSO_ECTG_OK(%r5)
jz 12f
- ear %r2,%a4
- llilh %r4,0x0100
- sar %a4,%r4
- lghi %r4,0
- epsw %r5,0
- sacf 512 /* Magic ectg instruction */
+ sacf 256 /* Magic ectg instruction */
.insn ssf,0xc80100000000,__VDSO_ECTG_BASE(4),__VDSO_ECTG_USER(4),4
- tml %r5,0x4000
- jo 11f
- tml %r5,0x8000
- jno 10f
- sacf 256
- j 11f
-10: sacf 0
-11: sar %a4,%r2
+ sacf 0
algr %r1,%r0 /* r1 = cputime as TOD value */
mghi %r1,1000 /* convert to nanoseconds */
srlg %r1,%r1,12 /* r1 = cputime in nanosec */