diff options
Diffstat (limited to 'arch/um/os-Linux')
| -rw-r--r-- | arch/um/os-Linux/helper.c | 4 | ||||
| -rw-r--r-- | arch/um/os-Linux/time.c | 15 |
2 files changed, 16 insertions, 3 deletions
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c index feb48d796e00..9fa6e4187d4f 100644 --- a/arch/um/os-Linux/helper.c +++ b/arch/um/os-Linux/helper.c @@ -45,7 +45,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv) unsigned long stack, sp; int pid, fds[2], ret, n; - stack = alloc_stack(__cant_sleep()); + stack = alloc_stack(0, __cant_sleep()); if (stack == 0) return -ENOMEM; @@ -116,7 +116,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, unsigned long stack, sp; int pid, status, err; - stack = alloc_stack(__cant_sleep()); + stack = alloc_stack(0, __cant_sleep()); if (stack == 0) return -ENOMEM; diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index a61cbf73a179..6c5041c5560b 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -104,5 +104,18 @@ long long os_nsecs(void) */ void os_idle_sleep(void) { - pause(); + struct itimerspec its; + sigset_t set, old; + + /* block SIGALRM while we analyze the timer state */ + sigemptyset(&set); + sigaddset(&set, SIGALRM); + sigprocmask(SIG_BLOCK, &set, &old); + + /* check the timer, and if it'll fire then wait for it */ + timer_gettime(event_high_res_timer, &its); + if (its.it_value.tv_sec || its.it_value.tv_nsec) + sigsuspend(&old); + /* either way, restore the signal mask */ + sigprocmask(SIG_UNBLOCK, &set, NULL); } |