diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup.c | 7 | ||||
| -rw-r--r-- | kernel/signal.c | 71 | ||||
| -rw-r--r-- | kernel/time/tick-broadcast.c | 2 | ||||
| -rw-r--r-- | kernel/time/tick-common.c | 4 | ||||
| -rw-r--r-- | kernel/time/tick-oneshot.c | 2 |
5 files changed, 53 insertions, 33 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 2727f923835..6d8de051382 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1722,7 +1722,12 @@ void cgroup_enable_task_cg_lists(void) use_task_css_set_links = 1; do_each_thread(g, p) { task_lock(p); - if (list_empty(&p->cg_list)) + /* + * We should check if the process is exiting, otherwise + * it will race with cgroup_exit() in that the list + * entry won't be deleted though the process has exited. + */ + if (!(p->flags & PF_EXITING) && list_empty(&p->cg_list)) list_add(&p->cg_list, &p->cgroups->tasks); task_unlock(p); } while_each_thread(g, p); diff --git a/kernel/signal.c b/kernel/signal.c index 6af1210092c..cc8303cd093 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1757,6 +1757,45 @@ static int do_signal_stop(int signr) return 1; } +static int ptrace_signal(int signr, siginfo_t *info, + struct pt_regs *regs, void *cookie) +{ + if (!(current->ptrace & PT_PTRACED)) + return signr; + + ptrace_signal_deliver(regs, cookie); + + /* Let the debugger run. */ + ptrace_stop(signr, 0, info); + + /* We're back. Did the debugger cancel the sig? */ + signr = current->exit_code; + if (signr == 0) + return signr; + + current->exit_code = 0; + + /* Update the siginfo structure if the signal has + changed. If the debugger wanted something + specific in the siginfo structure then it should + have updated *info via PTRACE_SETSIGINFO. */ + if (signr != info->si_signo) { + info->si_signo = signr; + info->si_errno = 0; + info->si_code = SI_USER; + info->si_pid = task_pid_vnr(current->parent); + info->si_uid = current->parent->uid; + } + + /* If the (new) signal is now blocked, requeue it. */ + if (sigismember(¤t->blocked, signr)) { + specific_send_sig_info(signr, info, current); + signr = 0; + } + + return signr; +} + int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie) { @@ -1785,36 +1824,10 @@ relock: if (!signr) break; /* will return 0 */ - if ((current->ptrace & PT_PTRACED) && signr != SIGKILL) { - ptrace_signal_deliver(regs, cookie); - - /* Let the debugger run. */ - ptrace_stop(signr, 0, info); - - /* We're back. Did the debugger cancel the sig? */ - signr = current->exit_code; - if (signr == 0) - continue; - - current->exit_code = 0; - - /* Update the siginfo structure if the signal has - changed. If the debugger wanted something - specific in the siginfo structure then it should - have updated *info via PTRACE_SETSIGINFO. */ - if (signr != info->si_signo) { - info->si_signo = signr; - info->si_errno = 0; - info->si_code = SI_USER; - info->si_pid = task_pid_vnr(current->parent); - info->si_uid = current->parent->uid; - } - - /* If the (new) signal is now blocked, requeue it. */ - if (sigismember(¤t->blocked, signr)) { - specific_send_sig_info(signr, info, current); + if (signr != SIGKILL) { + signr = ptrace_signal(signr, info, regs, cookie); + if (!signr) continue; - } } ka = ¤t->sighand->action[signr-1]; diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index e1bd50cbbf5..fdfa0c745bb 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -14,7 +14,7 @@ #include <linux/cpu.h> #include <linux/err.h> #include <linux/hrtimer.h> -#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/profile.h> #include <linux/sched.h> diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 1bea399a9ef..4f3886562b8 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -14,12 +14,14 @@ #include <linux/cpu.h> #include <linux/err.h> #include <linux/hrtimer.h> -#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/profile.h> #include <linux/sched.h> #include <linux/tick.h> +#include <asm/irq_regs.h> + #include "tick-internal.h" /* diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c index 0258d3115d5..450c04935b6 100644 --- a/kernel/time/tick-oneshot.c +++ b/kernel/time/tick-oneshot.c @@ -14,7 +14,7 @@ #include <linux/cpu.h> #include <linux/err.h> #include <linux/hrtimer.h> -#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/profile.h> #include <linux/sched.h> |