diff options
Diffstat (limited to 'arch/um/os-Linux/signal.c')
| -rw-r--r-- | arch/um/os-Linux/signal.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index b58bc68cbe64..96f511d1aabe 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -136,6 +136,16 @@ void set_sigstack(void *sig_stack, int size) panic("enabling signal stack failed, errno = %d\n", errno); } +static void sigusr1_handler(int sig, struct siginfo *unused_si, mcontext_t *mc) +{ + uml_pm_wake(); +} + +void register_pm_wake_signal(void) +{ + set_handler(SIGUSR1); +} + static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = { [SIGSEGV] = sig_handler, [SIGBUS] = sig_handler, @@ -145,7 +155,9 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = { [SIGIO] = sig_handler, [SIGWINCH] = sig_handler, - [SIGALRM] = timer_alarm_handler + [SIGALRM] = timer_alarm_handler, + + [SIGUSR1] = sigusr1_handler, }; static void hard_handler(int sig, siginfo_t *si, void *p) @@ -222,6 +234,11 @@ void set_handler(int sig) panic("sigprocmask failed - errno = %d\n", errno); } +void send_sigio_to_self(void) +{ + kill(os_getpid(), SIGIO); +} + int change_sig(int signal, int on) { sigset_t sigset; @@ -254,6 +271,9 @@ void unblock_signals(void) return; signals_enabled = 1; +#ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT + deliver_time_travel_irqs(); +#endif /* * We loop because the IRQ handler returns with interrupts off. So, |