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authorChris Metcalf <cmetcalf@tilera.com>2011-05-16 14:23:44 -0400
committerChris Metcalf <cmetcalf@tilera.com>2011-05-19 22:55:59 -0400
commit571d76acdab95876aeff869ab6449f826c23aa43 (patch)
treeb52ceacfa83b1ab4c5a6950007ce8be03cec192e /arch/tile/kernel/traps.c
parent8aaf1dda42576b0f8dffb004065baa806f4df9b6 (diff)
arch/tile: support signal "exception-trace" hook
This change adds support for /proc/sys/debug/exception-trace to tile. Like x86 and sparc, by default it is set to "1", generating a one-line printk whenever a user process crashes. By setting it to "2", we get a much more complete userspace diagnostic at crash time, including a user-space backtrace, register dump, and memory dump around the address of the crash. Some vestiges of the Tilera-internal version of this support are removed with this patch (the show_crashinfo variable and the arch_coredump_signal function). We retain a "crashinfo" boot parameter which allows you to set the boot-time value of exception-trace. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/traps.c')
-rw-r--r--arch/tile/kernel/traps.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c
index 5474fc2e77e8..f9803dfa7357 100644
--- a/arch/tile/kernel/traps.c
+++ b/arch/tile/kernel/traps.c
@@ -308,6 +308,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
info.si_addr = (void __user *)address;
if (signo == SIGILL)
info.si_trapno = fault_num;
+ trace_unhandled_signal("trap", regs, address, signo);
force_sig_info(signo, &info, current);
}