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| author | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-16 20:23:44 +0200 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-20 04:55:59 +0200 |
| commit | 571d76acdab95876aeff869ab6449f826c23aa43 (patch) | |
| tree | b52ceacfa83b1ab4c5a6950007ce8be03cec192e /arch/tile/kernel/compat_signal.c | |
| parent | arch/tile: use better definitions of xchg() and cmpxchg() (diff) | |
| download | linux-571d76acdab95876aeff869ab6449f826c23aa43.tar.xz linux-571d76acdab95876aeff869ab6449f826c23aa43.zip | |
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/compat_signal.c')
| -rw-r--r-- | arch/tile/kernel/compat_signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c index dbb0dfc7bece..a7869ad62776 100644 --- a/arch/tile/kernel/compat_signal.c +++ b/arch/tile/kernel/compat_signal.c @@ -317,7 +317,7 @@ long compat_sys_rt_sigreturn(struct pt_regs *regs) return 0; badframe: - force_sig(SIGSEGV, current); + signal_fault("bad sigreturn frame", regs, frame, 0); return 0; } @@ -431,6 +431,6 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, return 0; give_sigsegv: - force_sigsegv(sig, current); + signal_fault("bad setup frame", regs, frame, sig); return -EFAULT; } |