diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-16 14:23:44 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-19 22:55:59 -0400 |
| commit | 571d76acdab95876aeff869ab6449f826c23aa43 (patch) | |
| tree | b52ceacfa83b1ab4c5a6950007ce8be03cec192e /arch/tile/kernel/traps.c | |
| parent | 8aaf1dda42576b0f8dffb004065baa806f4df9b6 (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.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c index 5474fc2e77e..f9803dfa735 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); } |