1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
From e44f456f1d0e429e08afed64a161175ff493f3ac Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 27 Feb 2019 05:05:44 +0100
Subject: [PATCH] runtime: use CLOCK_BOOTTIME in nanotime on Linux
This makes timers account for having expired while a computer was
asleep, which is quite common on mobile devices. Note that BOOTTIME is
identical to MONOTONIC, except that it takes into account time spent
in suspend. In Linux 4.17, the kernel will actually make MONOTONIC act
like BOOTTIME anyway, so this switch will additionally unify the
timer behavior across kernels.
BOOTTIME was introduced into Linux 2.6.39-rc1 with 70a08cca1227d in
2011.
Fixes #24595
Change-Id: I7b2a6ca0c5bc5fce57ec0eeafe7b68270b429321
---
src/runtime/sys_linux_386.s | 4 ++--
src/runtime/sys_linux_amd64.s | 2 +-
src/runtime/sys_linux_arm.s | 4 ++--
src/runtime/sys_linux_arm64.s | 4 ++--
src/runtime/sys_linux_mips64x.s | 2 +-
src/runtime/sys_linux_mipsx.s | 2 +-
src/runtime/sys_linux_ppc64x.s | 2 +-
src/runtime/sys_linux_s390x.s | 2 +-
8 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/src/runtime/sys_linux_386.s b/src/runtime/sys_linux_386.s
index 1b28098ad9..46b7071ed8 100644
--- a/src/runtime/sys_linux_386.s
+++ b/src/runtime/sys_linux_386.s
@@ -317,13 +317,13 @@ noswitch:
LEAL 8(SP), BX // &ts (struct timespec)
MOVL BX, 4(SP)
- MOVL $1, 0(SP) // CLOCK_MONOTONIC
+ MOVL $7, 0(SP) // CLOCK_BOOTTIME
CALL AX
JMP finish
fallback:
MOVL $SYS_clock_gettime, AX
- MOVL $1, BX // CLOCK_MONOTONIC
+ MOVL $7, BX // CLOCK_BOOTTIME
LEAL 8(SP), CX
INVOKE_SYSCALL
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s
index 58d3bc54b4..4bb9bde3d0 100644
--- a/src/runtime/sys_linux_amd64.s
+++ b/src/runtime/sys_linux_amd64.s
@@ -293,7 +293,7 @@ noswitch:
MOVQ runtime·vdsoClockgettimeSym(SB), AX
CMPQ AX, $0
JEQ fallback
- MOVL $1, DI // CLOCK_MONOTONIC
+ MOVL $7, DI // CLOCK_BOOTTIME
LEAQ 0(SP), SI
CALL AX
MOVQ 0(SP), AX // sec
diff --git a/src/runtime/sys_linux_arm.s b/src/runtime/sys_linux_arm.s
index e103da56dc..0b872b90a6 100644
--- a/src/runtime/sys_linux_arm.s
+++ b/src/runtime/sys_linux_arm.s
@@ -11,7 +11,7 @@
#include "textflag.h"
#define CLOCK_REALTIME 0
-#define CLOCK_MONOTONIC 1
+#define CLOCK_BOOTTIME 7
// for EABI, as we don't support OABI
#define SYS_BASE 0x0
@@ -345,7 +345,7 @@ noswitch:
SUB $24, R13 // Space for results
BIC $0x7, R13 // Align for C code
- MOVW $CLOCK_MONOTONIC, R0
+ MOVW $CLOCK_BOOTTIME, R0
MOVW $8(R13), R1 // timespec
MOVW runtime·vdsoClockgettimeSym(SB), R2
CMP $0, R2
diff --git a/src/runtime/sys_linux_arm64.s b/src/runtime/sys_linux_arm64.s
index b9588cec30..e444d50df4 100644
--- a/src/runtime/sys_linux_arm64.s
+++ b/src/runtime/sys_linux_arm64.s
@@ -13,7 +13,7 @@
#define AT_FDCWD -100
#define CLOCK_REALTIME 0
-#define CLOCK_MONOTONIC 1
+#define CLOCK_BOOTTIME 7
#define SYS_exit 93
#define SYS_read 63
@@ -297,7 +297,7 @@ noswitch:
BIC $15, R1
MOVD R1, RSP
- MOVW $CLOCK_MONOTONIC, R0
+ MOVW $CLOCK_BOOTTIME, R0
MOVD runtime·vdsoClockgettimeSym(SB), R2
CBZ R2, fallback
diff --git a/src/runtime/sys_linux_mips64x.s b/src/runtime/sys_linux_mips64x.s
index 723cfe43d9..edd7a195eb 100644
--- a/src/runtime/sys_linux_mips64x.s
+++ b/src/runtime/sys_linux_mips64x.s
@@ -278,7 +278,7 @@ noswitch:
AND $~15, R1 // Align for C code
MOVV R1, R29
- MOVW $1, R4 // CLOCK_MONOTONIC
+ MOVW $7, R4 // CLOCK_BOOTTIME
MOVV $0(R29), R5
MOVV runtime·vdsoClockgettimeSym(SB), R25
diff --git a/src/runtime/sys_linux_mipsx.s b/src/runtime/sys_linux_mipsx.s
index 15893a7a28..f3edf9a83a 100644
--- a/src/runtime/sys_linux_mipsx.s
+++ b/src/runtime/sys_linux_mipsx.s
@@ -235,7 +235,7 @@ TEXT runtime·walltime1(SB),NOSPLIT,$8-12
RET
TEXT runtime·nanotime1(SB),NOSPLIT,$8-8
- MOVW $1, R4 // CLOCK_MONOTONIC
+ MOVW $7, R4 // CLOCK_BOOTTIME
MOVW $4(R29), R5
MOVW $SYS_clock_gettime, R2
SYSCALL
diff --git a/src/runtime/sys_linux_ppc64x.s b/src/runtime/sys_linux_ppc64x.s
index 8629fe3233..2402e2623a 100644
--- a/src/runtime/sys_linux_ppc64x.s
+++ b/src/runtime/sys_linux_ppc64x.s
@@ -233,7 +233,7 @@ fallback:
JMP finish
TEXT runtime·nanotime1(SB),NOSPLIT,$16
- MOVD $1, R3 // CLOCK_MONOTONIC
+ MOVD $7, R3 // CLOCK_BOOTTIME
MOVD R1, R15 // R15 is unchanged by C code
MOVD g_m(g), R21 // R21 = m
diff --git a/src/runtime/sys_linux_s390x.s b/src/runtime/sys_linux_s390x.s
index c15a1d5364..f52c4d5098 100644
--- a/src/runtime/sys_linux_s390x.s
+++ b/src/runtime/sys_linux_s390x.s
@@ -207,7 +207,7 @@ TEXT runtime·walltime1(SB),NOSPLIT,$16
RET
TEXT runtime·nanotime1(SB),NOSPLIT,$16
- MOVW $1, R2 // CLOCK_MONOTONIC
+ MOVW $7, R2 // CLOCK_BOOTTIME
MOVD $tp-16(SP), R3
MOVW $SYS_clock_gettime, R1
SYSCALL
--
2.25.1
|
