diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/include/os.h | 4 | ||||
| -rw-r--r-- | arch/um/kernel/time.c | 7 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 6 | ||||
| -rw-r--r-- | arch/um/os-Linux/time.c | 18 |
4 files changed, 22 insertions, 13 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h index c73dfa78f94..24fb6d8680e 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -276,9 +276,11 @@ extern int setjmp_wrapper(void (*proc)(void *, void *), ...); extern void switch_timers(int to_real); extern void idle_sleep(int secs); +extern int set_interval(int is_virtual); +#ifdef CONFIG_MODE_TT extern void enable_timer(void); +#endif extern void disable_timer(void); -extern void user_time_init(void); extern void uml_idle_timer(void); extern unsigned long long os_nsecs(void); diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c index 552ca1cb984..d1d799346e0 100644 --- a/arch/um/kernel/time.c +++ b/arch/um/kernel/time.c @@ -113,12 +113,15 @@ static void register_timer(void) err = request_irq(TIMER_IRQ, um_timer, IRQF_DISABLED, "timer", NULL); if(err != 0) - printk(KERN_ERR "timer_init : request_irq failed - " + printk(KERN_ERR "register_timer : request_irq failed - " "errno = %d\n", -err); timer_irq_inited = 1; - user_time_init(); + err = set_interval(1); + if(err != 0) + printk(KERN_ERR "register_timer : set_interval failed - " + "errno = %d\n", -err); } extern void (*late_time_init)(void); diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 88ff0de95cd..42e3d1ed802 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -155,11 +155,15 @@ extern int __syscall_stub_start; static int userspace_tramp(void *stack) { void *addr; + int err; ptrace(PTRACE_TRACEME, 0, 0, 0); init_new_thread_signals(); - enable_timer(); + err = set_interval(1); + if(err) + panic("userspace_tramp - setting timer failed, errno = %d\n", + err); if(!proc_mm){ /* This has a pte, but it can't be mapped in with the usual diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 7f5ebbadca6..38be096e750 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -17,20 +17,25 @@ #include "kern_constants.h" #include "os.h" -static void set_interval(int timer_type) +int set_interval(int is_virtual) { int usec = 1000000/hz(); + int timer_type = is_virtual ? ITIMER_VIRTUAL : ITIMER_REAL; struct itimerval interval = ((struct itimerval) { { 0, usec }, { 0, usec } }); if(setitimer(timer_type, &interval, NULL) == -1) - panic("setitimer failed - errno = %d\n", errno); + return -errno; + + return 0; } +#ifdef CONFIG_MODE_TT void enable_timer(void) { - set_interval(ITIMER_VIRTUAL); + set_interval(1); } +#endif void disable_timer(void) { @@ -74,7 +79,7 @@ void uml_idle_timer(void) set_handler(SIGALRM, (__sighandler_t) alarm_handler, SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_interval(ITIMER_REAL); + set_interval(0); } #endif @@ -94,8 +99,3 @@ void idle_sleep(int secs) ts.tv_nsec = 0; nanosleep(&ts, NULL); } - -void user_time_init(void) -{ - set_interval(ITIMER_VIRTUAL); -} |