diff options
| author |   Catalin Marinas <catalin.marinas@arm.com> | 2012-12-17 16:01:45 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 17:15:18 -0800 |
| commit | 0ad50c3896afbb3c103409a18260e601b87a744c (patch) | |
| tree | 3a59c1e90b3ee62daf18bc9689cf454a31f164be /arch/arm64 | |
| parent | lib/rbtree_test.c: fix uninitialized variable warning (diff) | |
| download | linux-dev-0ad50c3896afbb3c103409a18260e601b87a744c.tar.xz linux-dev-0ad50c3896afbb3c103409a18260e601b87a744c.zip | |
compat: generic compat_sys_sched_rr_get_interval() implementation
This function is used by sparc, powerpc tile and arm64 for compat support.
The patch adds a generic implementation with a wrapper for PowerPC to do
the u32->int sign extension.
The reason for a single patch covering powerpc, tile, sparc and arm64 is
to keep it bisectable, otherwise kernel building may fail with mismatched
function declarations.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com> [for tile]
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/sys_compat.c | 15 |
2 files changed, 1 insertions, 15 deletions
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index d69aeea6da1e..76fb7dd3350a 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -20,6 +20,7 @@ #define __ARCH_WANT_SYS_GETPGRP #define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE +#define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL #define __ARCH_WANT_SYS_SIGPENDING #define __ARCH_WANT_SYS_SIGPROCMASK #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c index f7b05edf8ce3..26e9c4eeaba8 100644 --- a/arch/arm64/kernel/sys_compat.c +++ b/arch/arm64/kernel/sys_compat.c @@ -28,21 +28,6 @@ #include <asm/cacheflush.h> #include <asm/unistd32.h> -asmlinkage int compat_sys_sched_rr_get_interval(compat_pid_t pid, - struct compat_timespec __user *interval) -{ - struct timespec t; - int ret; - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); - ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); - set_fs(old_fs); - if (put_compat_timespec(&t, interval)) - return -EFAULT; - return ret; -} - static inline void do_compat_cache_op(unsigned long start, unsigned long end, int flags) { |