diff --git a/fs/select.c b/fs/select.c index b3cce96718ab776468e12bfdcb05df6f501498cf..be2f66c5cc8a02eb4fb286a95e9271748d24c2f8 100644 --- a/fs/select.c +++ b/fs/select.c @@ -1000,10 +1000,9 @@ static long do_restart_poll(struct restart_block *restart_block) ret = do_sys_poll(ufds, nfds, to); - if (ret == -EINTR) { - restart_block->fn = do_restart_poll; - ret = -ERESTART_RESTARTBLOCK; - } + if (ret == -EINTR) + ret = set_restart_fn(restart_block, do_restart_poll); + return ret; } @@ -1025,7 +1024,6 @@ SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, unsigned int, nfds, struct restart_block *restart_block; restart_block = ¤t->restart_block; - restart_block->fn = do_restart_poll; restart_block->poll.ufds = ufds; restart_block->poll.nfds = nfds; @@ -1036,7 +1034,7 @@ SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, unsigned int, nfds, } else restart_block->poll.has_timeout = 0; - ret = -ERESTART_RESTARTBLOCK; + ret = set_restart_fn(restart_block, do_restart_poll); } return ret; } diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index 06ca9c157980b98a49a3e4fdd65511efb06674c5..e22fdce953081fdff4029ff38409f78b880a9c0a 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -12,12 +12,25 @@ #include #include #include +#include #include #include #ifdef __KERNEL__ +#ifndef arch_set_restart_data +#define arch_set_restart_data(restart) do { } while (0) +#endif + +static inline long set_restart_fn(struct restart_block *restart, + long (*fn)(struct restart_block *)) +{ + restart->fn = fn; + arch_set_restart_data(restart); + return -ERESTART_RESTARTBLOCK; +} + #ifndef THREAD_ALIGN #define THREAD_ALIGN THREAD_SIZE #endif diff --git a/kernel/futex.c b/kernel/futex.c index fc56076a2cc2b5795cc802d331c618a23f46951e..eeb1ac8b5bc6e61e40782b810d17d5bf6133a695 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -2862,14 +2862,13 @@ static int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val, goto out; restart = ¤t->restart_block; - restart->fn = futex_wait_restart; restart->futex.uaddr = uaddr; restart->futex.val = val; restart->futex.time = *abs_time; restart->futex.bitset = bitset; restart->futex.flags = flags | FLAGS_HAS_TIMEOUT; - ret = -ERESTART_RESTARTBLOCK; + ret = set_restart_fn(restart, futex_wait_restart); out: if (to) { diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 9eece67f29f3410da76fef0ced327237e6147d3e..6a2ba39889bd030f87cefb572123a468a5b790c7 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -822,9 +822,9 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags, if (flags == TIMER_ABSTIME) return -ERESTARTNOHAND; - restart->fn = alarm_timer_nsleep_restart; restart->nanosleep.clockid = type; restart->nanosleep.expires = exp; + set_restart_fn(restart, alarm_timer_nsleep_restart); return ret; } diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index ccde4dc8462ccb0aac851ae4df4facb0c83aea13..0e04b24cec8184ddc27c72817e3fe6bff2893ecf 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1771,9 +1771,9 @@ long hrtimer_nanosleep(const struct timespec64 *rqtp, } restart = ¤t->restart_block; - restart->fn = hrtimer_nanosleep_restart; restart->nanosleep.clockid = t.timer.base->clockid; restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer); + set_restart_fn(restart, hrtimer_nanosleep_restart); out: destroy_hrtimer_on_stack(&t.timer); return ret; diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index d62d7ae5201c5c5a525c48aa2a3197d3e4126041..bfaa44a80c0346ab954a176d583f68f964e3e0c6 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -1371,8 +1371,8 @@ static int posix_cpu_nsleep(const clockid_t which_clock, int flags, if (flags & TIMER_ABSTIME) return -ERESTARTNOHAND; - restart_block->fn = posix_cpu_nsleep_restart; restart_block->nanosleep.clockid = which_clock; + set_restart_fn(restart_block, posix_cpu_nsleep_restart); } return error; }