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| author |   Arnd Bergmann <arnd@arndb.de> | 2018-12-30 21:43:07 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-01-25 17:22:43 +0100 |
| commit | 78594b95998f1496e25411c6b7c7041bcb9bf7d1 (patch) | |
| tree | a2c74b3be8c9800dec56f87e9698d2ad03470eaf /arch | |
| parent | alpha: update syscall macro definitions (diff) | |
| download | linux-dev-78594b95998f1496e25411c6b7c7041bcb9bf7d1.tar.xz linux-dev-78594b95998f1496e25411c6b7c7041bcb9bf7d1.zip | |
ARM: add migrate_pages() system call
The migrate_pages system call has an assigned number on all architectures
except ARM. When it got added initially in commit d80ade7b3231 ("ARM:
Fix warning: #warning syscall migrate_pages not implemented"), it was
intentionally left out based on the observation that there are no 32-bit
ARM NUMA systems.
However, there are now arm64 NUMA machines that can in theory run 32-bit
kernels (actually enabling NUMA there would require additional work)
as well as 32-bit user space on 64-bit kernels, so that argument is no
longer very strong.
Assigning the number lets us use the system call on 64-bit kernels as well
as providing a more consistent set of syscalls across architectures.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/arm/tools/syscall.tbl | 1 | ||||
| -rw-r--r-- | arch/arm64/include/asm/unistd.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/unistd32.h | 2 |
4 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index 88ef2ce1f69a..d713587dfcf4 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -45,7 +45,6 @@ * Unimplemented (or alternatively implemented) syscalls */ #define __IGNORE_fadvise64_64 -#define __IGNORE_migrate_pages #ifdef __ARM_EABI__ /* diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index 8edf93b4490f..86de9eb34296 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -414,3 +414,4 @@ 397 common statx sys_statx 398 common rseq sys_rseq 399 common io_pgetevents sys_io_pgetevents +400 common migrate_pages sys_migrate_pages diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index a7b1fc58ffdf..261216c3336e 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -44,7 +44,7 @@ #define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE + 5) #define __ARM_NR_COMPAT_END (__ARM_NR_COMPAT_BASE + 0x800) -#define __NR_compat_syscalls 400 +#define __NR_compat_syscalls 401 #endif #define __ARCH_WANT_SYS_CLONE diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index 04ee190b90fe..f15bcbacb8f6 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -821,6 +821,8 @@ __SYSCALL(__NR_statx, sys_statx) __SYSCALL(__NR_rseq, sys_rseq) #define __NR_io_pgetevents 399 __SYSCALL(__NR_io_pgetevents, compat_sys_io_pgetevents) +#define __NR_migrate_pages 400 +__SYSCALL(__NR_migrate_pages, compat_sys_migrate_pages) /* * Please add new compat syscalls above this comment and update |