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y2038: sched: Change sched_rr_get_interval to use __kernel_timespec 

This is a preparation patch for converting sys_sched_rr_get_interval to
work with 64-bit time_t on 32-bit architectures. The 'interval' argument
is changed to struct __kernel_timespec, which will be redefined using
64-bit time_t in the future. The compat version of the system call in
turn is enabled for compilation with CONFIG_COMPAT_32BIT_TIME so
the individual 32-bit architectures can share the handling of the
traditional argument with 64-bit architectures providing it for their
compat mode.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2018-04-17 21:59:47 +02:00
parent 4faea239e5
commit 474b9c777b
2 changed files with 3 additions and 3 deletions
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2
include/linux/syscalls.h
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@ -614,7 +614,7 @@ asmlinkage long sys_sched_yield(void);
asmlinkage long sys_sched_get_priority_max(int policy);
asmlinkage long sys_sched_get_priority_min(int policy);
asmlinkage long sys_sched_rr_get_interval(pid_t pid,
struct timespec __user *interval);
struct __kernel_timespec __user *interval);
/* kernel/signal.c */
asmlinkage long sys_restart_syscall(void);

4
kernel/sched/core.c
View File

@ -5243,7 +5243,7 @@ static int sched_rr_get_interval(pid_t pid, struct timespec64 *t)
* an error code.
*/
SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid,
struct timespec __user *, interval)
struct __kernel_timespec __user *, interval)
{
struct timespec64 t;
int retval = sched_rr_get_interval(pid, &t);
@ -5254,7 +5254,7 @@ SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid,
return retval;
}
#ifdef CONFIG_COMPAT
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval,
compat_pid_t, pid,
struct old_timespec32 __user *, interval)