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Merge branch 'timers/urgent' into WIP.timers

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Pick up urgent fixes to avoid conflicts.
This commit is contained in:
Thomas Gleixner
2017-06-04 15:21:52 +02:00
parent 6bc51cbaa9 ff86bf0c65
commit 978267b643
422 changed files with 5701 additions and 2814 deletions
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14
kernel/time/alarmtimer.c
View File

@@ -357,7 +357,7 @@ void alarm_start_relative(struct alarm *alarm, ktime_t start)
{
struct alarm_base *base = &alarm_bases[alarm->type];
start = ktime_add(start, base->gettime());
start = ktime_add_safe(start, base->gettime());
alarm_start(alarm, start);
}
EXPORT_SYMBOL_GPL(alarm_start_relative);
@@ -445,7 +445,7 @@ u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval)
overrun++;
}
alarm->node.expires = ktime_add(alarm->node.expires, interval);
alarm->node.expires = ktime_add_safe(alarm->node.expires, interval);
return overrun;
}
EXPORT_SYMBOL_GPL(alarm_forward);
@@ -662,13 +662,21 @@ static int alarm_timer_set(struct k_itimer *timr, int flags,
/* start the timer */
timr->it.alarm.interval = timespec64_to_ktime(new_setting->it_interval);
/*
* Rate limit to the tick as a hot fix to prevent DOS. Will be
* mopped up later.
*/
if (timr->it.alarm.interval < TICK_NSEC)
timr->it.alarm.interval = TICK_NSEC;
exp = timespec64_to_ktime(new_setting->it_value);
/* Convert (if necessary) to absolute time */
if (flags != TIMER_ABSTIME) {
ktime_t now;
now = alarm_bases[timr->it.alarm.alarmtimer.type].gettime();
exp = ktime_add(now, exp);
exp = ktime_add_safe(now, exp);
}
alarm_start(&timr->it.alarm.alarmtimer, exp);

24
kernel/time/posix-cpu-timers.c
View File

@@ -825,8 +825,10 @@ static void check_thread_timers(struct task_struct *tsk,
* At the hard limit, we just die.
* No need to calculate anything else now.
*/
pr_info("CPU Watchdog Timeout (hard): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
if (print_fatal_signals) {
pr_info("CPU Watchdog Timeout (hard): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
}
__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);
return;
}
@@ -838,8 +840,10 @@ static void check_thread_timers(struct task_struct *tsk,
soft += USEC_PER_SEC;
sig->rlim[RLIMIT_RTTIME].rlim_cur = soft;
}
pr_info("RT Watchdog Timeout (soft): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
if (print_fatal_signals) {
pr_info("RT Watchdog Timeout (soft): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
}
__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);
}
}
@@ -936,8 +940,10 @@ static void check_process_timers(struct task_struct *tsk,
* At the hard limit, we just die.
* No need to calculate anything else now.
*/
pr_info("RT Watchdog Timeout (hard): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
if (print_fatal_signals) {
pr_info("RT Watchdog Timeout (hard): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
}
__group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk);
return;
}
@@ -945,8 +951,10 @@ static void check_process_timers(struct task_struct *tsk,
/*
* At the soft limit, send a SIGXCPU every second.
*/
pr_info("CPU Watchdog Timeout (soft): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
if (print_fatal_signals) {
pr_info("CPU Watchdog Timeout (soft): %s[%d]\n",
tsk->comm, task_pid_nr(tsk));
}
__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);
if (soft < hard) {
soft++;