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Diffstat (limited to 'arch/s390/kernel/vdso64/clock_gettime.S')
-rw-r--r--arch/s390/kernel/vdso64/clock_gettime.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index 3f34e09db5f4..9d9761f8e110 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -20,12 +20,16 @@
__kernel_clock_gettime:
.cfi_startproc
larl %r5,_vdso_data
+ cghi %r2,__CLOCK_REALTIME_COARSE
+ je 4f
cghi %r2,__CLOCK_REALTIME
je 5f
cghi %r2,__CLOCK_THREAD_CPUTIME_ID
je 9f
cghi %r2,-2 /* Per-thread CPUCLOCK with PID=0, VIRT=1 */
je 9f
+ cghi %r2,__CLOCK_MONOTONIC_COARSE
+ je 3f
cghi %r2,__CLOCK_MONOTONIC
jne 12f
@@ -33,10 +37,10 @@ __kernel_clock_gettime:
0: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
tmll %r4,0x0001 /* pending update ? loop */
jnz 0b
- stck 48(%r15) /* Store TOD clock */
+ stcke 48(%r15) /* Store TOD clock */
lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
lg %r0,__VDSO_WTOM_SEC(%r5)
- lg %r1,48(%r15)
+ lg %r1,49(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_WTOM_NSEC(%r5)
@@ -54,13 +58,33 @@ __kernel_clock_gettime:
lghi %r2,0
br %r14
+ /* CLOCK_MONOTONIC_COARSE */
+3: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
+ tmll %r4,0x0001 /* pending update ? loop */
+ jnz 3b
+ lg %r0,__VDSO_WTOM_CRS_SEC(%r5)
+ lg %r1,__VDSO_WTOM_CRS_NSEC(%r5)
+ clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
+ jne 3b
+ j 2b
+
+ /* CLOCK_REALTIME_COARSE */
+4: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
+ tmll %r4,0x0001 /* pending update ? loop */
+ jnz 4b
+ lg %r0,__VDSO_XTIME_CRS_SEC(%r5)
+ lg %r1,__VDSO_XTIME_CRS_NSEC(%r5)
+ clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
+ jne 4b
+ j 7f
+
/* CLOCK_REALTIME */
5: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
tmll %r4,0x0001 /* pending update ? loop */
jnz 5b
- stck 48(%r15) /* Store TOD clock */
+ stcke 48(%r15) /* Store TOD clock */
lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
- lg %r1,48(%r15)
+ lg %r1,49(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */