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-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/include/asm/vdso.h5
-rw-r--r--arch/s390/kernel/asm-offsets.c3
-rw-r--r--arch/s390/kernel/time.c27
-rw-r--r--arch/s390/kernel/vdso32/clock_gettime.S30
-rw-r--r--arch/s390/kernel/vdso32/gettimeofday.S9
-rw-r--r--arch/s390/kernel/vdso64/clock_gettime.S22
-rw-r--r--arch/s390/kernel/vdso64/gettimeofday.S9
8 files changed, 62 insertions, 45 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 314fced4fc14..5877e71901b3 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -101,7 +101,7 @@ config S390
101 select GENERIC_CPU_DEVICES if !SMP 101 select GENERIC_CPU_DEVICES if !SMP
102 select GENERIC_FIND_FIRST_BIT 102 select GENERIC_FIND_FIRST_BIT
103 select GENERIC_SMP_IDLE_THREAD 103 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL_OLD 104 select GENERIC_TIME_VSYSCALL
105 select HAVE_ALIGNED_STRUCT_PAGE if SLUB 105 select HAVE_ALIGNED_STRUCT_PAGE if SLUB
106 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 106 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
107 select HAVE_ARCH_SECCOMP_FILTER 107 select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index a73eb2e1e918..bc9746a7d47c 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -26,8 +26,9 @@ struct vdso_data {
26 __u64 wtom_clock_nsec; /* 0x28 */ 26 __u64 wtom_clock_nsec; /* 0x28 */
27 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */ 27 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
28 __u32 tz_dsttime; /* Type of dst correction 0x34 */ 28 __u32 tz_dsttime; /* Type of dst correction 0x34 */
29 __u32 ectg_available; 29 __u32 ectg_available; /* ECTG instruction present 0x38 */
30 __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */ 30 __u32 tk_mult; /* Mult. used for xtime_nsec 0x3c */
31 __u32 tk_shift; /* Shift used for xtime_nsec 0x40 */
31}; 32};
32 33
33struct vdso_per_cpu_data { 34struct vdso_per_cpu_data {
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index 2416138ebd3e..496116cd65ec 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -65,7 +65,8 @@ int main(void)
65 DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec)); 65 DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
66 DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest)); 66 DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest));
67 DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available)); 67 DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available));
68 DEFINE(__VDSO_NTP_MULT, offsetof(struct vdso_data, ntp_mult)); 68 DEFINE(__VDSO_TK_MULT, offsetof(struct vdso_data, tk_mult));
69 DEFINE(__VDSO_TK_SHIFT, offsetof(struct vdso_data, tk_shift));
69 DEFINE(__VDSO_ECTG_BASE, offsetof(struct vdso_per_cpu_data, ectg_timer_base)); 70 DEFINE(__VDSO_ECTG_BASE, offsetof(struct vdso_per_cpu_data, ectg_timer_base));
70 DEFINE(__VDSO_ECTG_USER, offsetof(struct vdso_per_cpu_data, ectg_user_time)); 71 DEFINE(__VDSO_ECTG_USER, offsetof(struct vdso_per_cpu_data, ectg_user_time));
71 /* constants used by the vdso */ 72 /* constants used by the vdso */
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 064c3082ab33..60a508a9b981 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -221,21 +221,30 @@ struct clocksource * __init clocksource_default_clock(void)
221 return &clocksource_tod; 221 return &clocksource_tod;
222} 222}
223 223
224void update_vsyscall_old(struct timespec *wall_time, struct timespec *wtm, 224void update_vsyscall(struct timekeeper *tk)
225 struct clocksource *clock, u32 mult)
226{ 225{
227 if (clock != &clocksource_tod) 226 u64 nsecps;
227
228 if (tk->clock != &clocksource_tod)
228 return; 229 return;
229 230
230 /* Make userspace gettimeofday spin until we're done. */ 231 /* Make userspace gettimeofday spin until we're done. */
231 ++vdso_data->tb_update_count; 232 ++vdso_data->tb_update_count;
232 smp_wmb(); 233 smp_wmb();
233 vdso_data->xtime_tod_stamp = clock->cycle_last; 234 vdso_data->xtime_tod_stamp = tk->clock->cycle_last;
234 vdso_data->xtime_clock_sec = wall_time->tv_sec; 235 vdso_data->xtime_clock_sec = tk->xtime_sec;
235 vdso_data->xtime_clock_nsec = wall_time->tv_nsec; 236 vdso_data->xtime_clock_nsec = tk->xtime_nsec;
236 vdso_data->wtom_clock_sec = wtm->tv_sec; 237 vdso_data->wtom_clock_sec =
237 vdso_data->wtom_clock_nsec = wtm->tv_nsec; 238 tk->xtime_sec + tk->wall_to_monotonic.tv_sec;
238 vdso_data->ntp_mult = mult; 239 vdso_data->wtom_clock_nsec = tk->xtime_nsec +
240 + (tk->wall_to_monotonic.tv_nsec << tk->shift);
241 nsecps = (u64) NSEC_PER_SEC << tk->shift;
242 while (vdso_data->wtom_clock_nsec >= nsecps) {
243 vdso_data->wtom_clock_nsec -= nsecps;
244 vdso_data->wtom_clock_sec++;
245 }
246 vdso_data->tk_mult = tk->mult;
247 vdso_data->tk_shift = tk->shift;
239 smp_wmb(); 248 smp_wmb();
240 ++vdso_data->tb_update_count; 249 ++vdso_data->tb_update_count;
241} 250}
diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S
index b2224e0b974c..5be8e472f57d 100644
--- a/arch/s390/kernel/vdso32/clock_gettime.S
+++ b/arch/s390/kernel/vdso32/clock_gettime.S
@@ -38,25 +38,26 @@ __kernel_clock_gettime:
38 sl %r1,__VDSO_XTIME_STAMP+4(%r5) 38 sl %r1,__VDSO_XTIME_STAMP+4(%r5)
39 brc 3,2f 39 brc 3,2f
40 ahi %r0,-1 40 ahi %r0,-1
412: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */ 412: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
42 lr %r2,%r0 42 lr %r2,%r0
43 l %r0,__VDSO_NTP_MULT(%r5) 43 l %r0,__VDSO_TK_MULT(%r5)
44 ltr %r1,%r1 44 ltr %r1,%r1
45 mr %r0,%r0 45 mr %r0,%r0
46 jnm 3f 46 jnm 3f
47 a %r0,__VDSO_NTP_MULT(%r5) 47 a %r0,__VDSO_TK_MULT(%r5)
483: alr %r0,%r2 483: alr %r0,%r2
49 srdl %r0,12 49 al %r0,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
50 al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
51 al %r1,__VDSO_XTIME_NSEC+4(%r5) 50 al %r1,__VDSO_XTIME_NSEC+4(%r5)
52 brc 12,4f 51 brc 12,4f
53 ahi %r0,1 52 ahi %r0,1
544: l %r2,__VDSO_XTIME_SEC+4(%r5) 534: al %r0,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic.nsec */
55 al %r0,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic */
56 al %r1,__VDSO_WTOM_NSEC+4(%r5) 54 al %r1,__VDSO_WTOM_NSEC+4(%r5)
57 brc 12,5f 55 brc 12,5f
58 ahi %r0,1 56 ahi %r0,1
595: al %r2,__VDSO_WTOM_SEC+4(%r5) 575: l %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
58 srdl %r0,0(%r2) /* >> tk->shift */
59 l %r2,__VDSO_XTIME_SEC+4(%r5)
60 al %r2,__VDSO_WTOM_SEC+4(%r5)
60 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ 61 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
61 jne 1b 62 jne 1b
62 basr %r5,0 63 basr %r5,0
@@ -86,20 +87,21 @@ __kernel_clock_gettime:
86 sl %r1,__VDSO_XTIME_STAMP+4(%r5) 87 sl %r1,__VDSO_XTIME_STAMP+4(%r5)
87 brc 3,12f 88 brc 3,12f
88 ahi %r0,-1 89 ahi %r0,-1
8912: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */ 9012: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
90 lr %r2,%r0 91 lr %r2,%r0
91 l %r0,__VDSO_NTP_MULT(%r5) 92 l %r0,__VDSO_TK_MULT(%r5)
92 ltr %r1,%r1 93 ltr %r1,%r1
93 mr %r0,%r0 94 mr %r0,%r0
94 jnm 13f 95 jnm 13f
95 a %r0,__VDSO_NTP_MULT(%r5) 96 a %r0,__VDSO_TK_MULT(%r5)
9613: alr %r0,%r2 9713: alr %r0,%r2
97 srdl %r0,12 98 al %r0,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
98 al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
99 al %r1,__VDSO_XTIME_NSEC+4(%r5) 99 al %r1,__VDSO_XTIME_NSEC+4(%r5)
100 brc 12,14f 100 brc 12,14f
101 ahi %r0,1 101 ahi %r0,1
10214: l %r2,__VDSO_XTIME_SEC+4(%r5) 10214: l %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
103 srdl %r0,0(%r2) /* >> tk->shift */
104 l %r2,__VDSO_XTIME_SEC+4(%r5)
103 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ 105 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
104 jne 11b 106 jne 11b
105 basr %r5,0 107 basr %r5,0
diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S
index 2d3633175e3b..fd621a950f7c 100644
--- a/arch/s390/kernel/vdso32/gettimeofday.S
+++ b/arch/s390/kernel/vdso32/gettimeofday.S
@@ -35,15 +35,14 @@ __kernel_gettimeofday:
35 sl %r1,__VDSO_XTIME_STAMP+4(%r5) 35 sl %r1,__VDSO_XTIME_STAMP+4(%r5)
36 brc 3,3f 36 brc 3,3f
37 ahi %r0,-1 37 ahi %r0,-1
383: ms %r0,__VDSO_NTP_MULT(%r5) /* cyc2ns(clock,cycle_delta) */ 383: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
39 st %r0,24(%r15) 39 st %r0,24(%r15)
40 l %r0,__VDSO_NTP_MULT(%r5) 40 l %r0,__VDSO_TK_MULT(%r5)
41 ltr %r1,%r1 41 ltr %r1,%r1
42 mr %r0,%r0 42 mr %r0,%r0
43 jnm 4f 43 jnm 4f
44 a %r0,__VDSO_NTP_MULT(%r5) 44 a %r0,__VDSO_TK_MULT(%r5)
454: al %r0,24(%r15) 454: al %r0,24(%r15)
46 srdl %r0,12
47 al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */ 46 al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
48 al %r1,__VDSO_XTIME_NSEC+4(%r5) 47 al %r1,__VDSO_XTIME_NSEC+4(%r5)
49 brc 12,5f 48 brc 12,5f
@@ -51,6 +50,8 @@ __kernel_gettimeofday:
515: mvc 24(4,%r15),__VDSO_XTIME_SEC+4(%r5) 505: mvc 24(4,%r15),__VDSO_XTIME_SEC+4(%r5)
52 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ 51 cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
53 jne 1b 52 jne 1b
53 l %r4,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
54 srdl %r0,0(%r4) /* >> tk->shift */
54 l %r4,24(%r15) /* get tv_sec from stack */ 55 l %r4,24(%r15) /* get tv_sec from stack */
55 basr %r5,0 56 basr %r5,0
566: ltr %r0,%r0 576: ltr %r0,%r0
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index d46c95ed5f19..0add1072ba30 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -34,14 +34,15 @@ __kernel_clock_gettime:
34 tmll %r4,0x0001 /* pending update ? loop */ 34 tmll %r4,0x0001 /* pending update ? loop */
35 jnz 0b 35 jnz 0b
36 stck 48(%r15) /* Store TOD clock */ 36 stck 48(%r15) /* Store TOD clock */
37 lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
38 lg %r0,__VDSO_XTIME_SEC(%r5) /* tk->xtime_sec */
39 alg %r0,__VDSO_WTOM_SEC(%r5) /* + wall_to_monotonic.sec */
37 lg %r1,48(%r15) 40 lg %r1,48(%r15)
38 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ 41 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
39 msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */ 42 msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
40 srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ 43 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
41 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ 44 alg %r1,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic.nsec */
42 lg %r0,__VDSO_XTIME_SEC(%r5) 45 srlg %r1,%r1,0(%r2) /* >> tk->shift */
43 alg %r1,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic */
44 alg %r0,__VDSO_WTOM_SEC(%r5)
45 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ 46 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
46 jne 0b 47 jne 0b
47 larl %r5,13f 48 larl %r5,13f
@@ -62,12 +63,13 @@ __kernel_clock_gettime:
62 tmll %r4,0x0001 /* pending update ? loop */ 63 tmll %r4,0x0001 /* pending update ? loop */
63 jnz 5b 64 jnz 5b
64 stck 48(%r15) /* Store TOD clock */ 65 stck 48(%r15) /* Store TOD clock */
66 lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
65 lg %r1,48(%r15) 67 lg %r1,48(%r15)
66 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ 68 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
67 msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */ 69 msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
68 srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ 70 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
69 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ 71 srlg %r1,%r1,0(%r2) /* >> tk->shift */
70 lg %r0,__VDSO_XTIME_SEC(%r5) 72 lg %r0,__VDSO_XTIME_SEC(%r5) /* tk->xtime_sec */
71 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ 73 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
72 jne 5b 74 jne 5b
73 larl %r5,13f 75 larl %r5,13f
diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S
index 36ee674722ec..d0860d1d0ccc 100644
--- a/arch/s390/kernel/vdso64/gettimeofday.S
+++ b/arch/s390/kernel/vdso64/gettimeofday.S
@@ -31,12 +31,13 @@ __kernel_gettimeofday:
31 stck 48(%r15) /* Store TOD clock */ 31 stck 48(%r15) /* Store TOD clock */
32 lg %r1,48(%r15) 32 lg %r1,48(%r15)
33 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ 33 sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
34 msgf %r1,__VDSO_NTP_MULT(%r5) /* * NTP adjustment */ 34 msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
35 srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ 35 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
36 alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime.tv_nsec */ 36 lg %r0,__VDSO_XTIME_SEC(%r5) /* tk->xtime_sec */
37 lg %r0,__VDSO_XTIME_SEC(%r5) /* xtime.tv_sec */
38 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ 37 clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
39 jne 0b 38 jne 0b
39 lgf %r5,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
40 srlg %r1,%r1,0(%r5) /* >> tk->shift */
40 larl %r5,5f 41 larl %r5,5f
412: clg %r1,0(%r5) 422: clg %r1,0(%r5)
42 jl 3f 43 jl 3f
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 21:52:56 -0500