[POWERPC] Stop include asm-ppc when building ARCH=powerpc for ppc32

[linux-2.6-omap-h63xx.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index f9405609774eadc4115006e8f80f418413d84217..b27c01a66448a4bee1e023ccd809b28b0b719b36 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -255,6 +255,16 @@ flush_signal_handlers(struct task_struct *t, int force_default)
        }
 }
 
+int unhandled_signal(struct task_struct *tsk, int sig)
+{
+       if (is_init(tsk))
+               return 1;
+       if (tsk->ptrace & PT_PTRACED)
+               return 0;
+       return (tsk->sighand->action[sig-1].sa.sa_handler == SIG_IGN) ||
+               (tsk->sighand->action[sig-1].sa.sa_handler == SIG_DFL);
+}
+
 
 /* Notify the system that a driver wants to block all signals for this
  * process, and wants to be notified if any signals at all were to be
@@ -718,6 +728,37 @@ out_set:
 #define LEGACY_QUEUE(sigptr, sig) \
        (((sig) < SIGRTMIN) && sigismember(&(sigptr)->signal, (sig)))
 
+int print_fatal_signals;
+
+static void print_fatal_signal(struct pt_regs *regs, int signr)
+{
+       printk("%s/%d: potentially unexpected fatal signal %d.\n",
+               current->comm, current->pid, signr);
+
+#ifdef __i386__
+       printk("code at %08lx: ", regs->eip);
+       {
+               int i;
+               for (i = 0; i < 16; i++) {
+                       unsigned char insn;
+
+                       __get_user(insn, (unsigned char *)(regs->eip + i));
+                       printk("%02x ", insn);
+               }
+       }
+#endif
+       printk("\n");
+       show_regs(regs);
+}
+
+static int __init setup_print_fatal_signals(char *str)
+{
+       get_option (&str, &print_fatal_signals);
+
+       return 1;
+}
+
+__setup("print-fatal-signals=", setup_print_fatal_signals);
 
 static int
 specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
@@ -1520,10 +1561,6 @@ static inline int may_ptrace_stop(void)
                    (current->ptrace & PT_ATTACHED)))
                return 0;
 
-       if (unlikely(current->signal == current->parent->signal) &&
-           unlikely(current->signal->flags & SIGNAL_GROUP_EXIT))
-               return 0;
-
        /*
         * Are we in the middle of do_coredump?
         * If so and our tracer is also part of the coredump stopping
@@ -1855,6 +1892,8 @@ relock:
                 * Anything else is fatal, maybe with a core dump.
                 */
                current->flags |= PF_SIGNALED;
+               if ((signr != SIGKILL) && print_fatal_signals)
+                       print_fatal_signal(regs, signr);
                if (sig_kernel_coredump(signr)) {
                        /*
                         * If it was able to dump core, this kills all