162 lines
4.8 KiB
Diff
162 lines
4.8 KiB
Diff
From 6998a7866b8428fd49c31506795c9f8154826d13 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 40b55a67eb..6105780ff4 100644
|
|
--- a/src/runtime/sys_linux_386.s
|
|
+++ b/src/runtime/sys_linux_386.s
|
|
@@ -288,13 +288,13 @@ 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 b709f77060..18a1f1d43a 100644
|
|
--- a/src/runtime/sys_linux_amd64.s
|
|
+++ b/src/runtime/sys_linux_amd64.s
|
|
@@ -261,7 +261,7 @@ 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 43a58335c8..8b93635f4f 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
|
|
@@ -291,7 +291,7 @@ 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), R11
|
|
CMP $0, R11
|
|
diff --git a/src/runtime/sys_linux_arm64.s b/src/runtime/sys_linux_arm64.s
|
|
index 8b344be8f8..daf142fba0 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
|
|
@@ -247,7 +247,7 @@ noswitch:
|
|
BIC $15, R1
|
|
MOVD R1, RSP
|
|
|
|
- MOVW $CLOCK_MONOTONIC, R0
|
|
+ MOVW $CLOCK_BOOTTIME, R0
|
|
MOVD runtime·vdsoClockgettimeSym(SB), R2
|
|
CBZ R2, fallback
|
|
BL (R2)
|
|
diff --git a/src/runtime/sys_linux_mips64x.s b/src/runtime/sys_linux_mips64x.s
|
|
index c45703d228..9842b596e7 100644
|
|
--- a/src/runtime/sys_linux_mips64x.s
|
|
+++ b/src/runtime/sys_linux_mips64x.s
|
|
@@ -189,7 +189,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$16
|
|
RET
|
|
|
|
TEXT runtime·nanotime(SB),NOSPLIT,$16
|
|
- MOVW $1, R4 // CLOCK_MONOTONIC
|
|
+ MOVW $7, R4 // CLOCK_BOOTTIME
|
|
MOVV $0(R29), R5
|
|
MOVV $SYS_clock_gettime, R2
|
|
SYSCALL
|
|
diff --git a/src/runtime/sys_linux_mipsx.s b/src/runtime/sys_linux_mipsx.s
|
|
index f362b0f3f1..5ab866e047 100644
|
|
--- a/src/runtime/sys_linux_mipsx.s
|
|
+++ b/src/runtime/sys_linux_mipsx.s
|
|
@@ -193,7 +193,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$8-12
|
|
RET
|
|
|
|
TEXT runtime·nanotime(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 6835f434de..46618b2d91 100644
|
|
--- a/src/runtime/sys_linux_ppc64x.s
|
|
+++ b/src/runtime/sys_linux_ppc64x.s
|
|
@@ -204,7 +204,7 @@ fallback:
|
|
JMP finish
|
|
|
|
TEXT runtime·nanotime(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 c79ceea751..44e3258e60 100644
|
|
--- a/src/runtime/sys_linux_s390x.s
|
|
+++ b/src/runtime/sys_linux_s390x.s
|
|
@@ -180,7 +180,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$16
|
|
RET
|
|
|
|
TEXT runtime·nanotime(SB),NOSPLIT,$16
|
|
- MOVW $1, R2 // CLOCK_MONOTONIC
|
|
+ MOVW $7, R2 // CLOCK_BOOTTIME
|
|
MOVD $tp-16(SP), R3
|
|
MOVW $SYS_clock_gettime, R1
|
|
SYSCALL
|
|
--
|
|
2.20.1
|
|
|