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powerpc/traps: Print unhandled signals in a separate function

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Isolate the logic of printing unhandled signals out of _exception_pkey().
No functional change, only code rearrangement.

Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Murilo Opsfelder Araujo 2018-08-01 18:33:15 -03:00 committed by Michael Ellerman
parent 8e4bdc699b
commit 658b0f92bc
1 changed files with 17 additions and 11 deletions
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28
arch/powerpc/kernel/traps.c
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@ -301,26 +301,32 @@ void user_single_step_siginfo(struct task_struct *tsk,
info->si_addr = (void __user *)regs->nip;
}
void _exception_pkey(int signr, struct pt_regs *regs, int code,
unsigned long addr, int key)
static void show_signal_msg(int signr, struct pt_regs *regs, int code,
unsigned long addr)
{
siginfo_t info;
const char fmt32[] = KERN_INFO "%s[%d]: unhandled signal %d " \
"at %08lx nip %08lx lr %08lx code %x\n";
"at %08lx nip %08lx lr %08lx code %x\n";
const char fmt64[] = KERN_INFO "%s[%d]: unhandled signal %d " \
"at %016lx nip %016lx lr %016lx code %x\n";
if (!user_mode(regs)) {
die("Exception in kernel mode", regs, signr);
return;
}
"at %016lx nip %016lx lr %016lx code %x\n";
if (show_unhandled_signals && unhandled_signal(current, signr)) {
printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,
current->comm, current->pid, signr,
addr, regs->nip, regs->link, code);
}
}
void _exception_pkey(int signr, struct pt_regs *regs, int code,
unsigned long addr, int key)
{
siginfo_t info;
if (!user_mode(regs)) {
die("Exception in kernel mode", regs, signr);
return;
}
show_signal_msg(signr, regs, code, addr);
if (arch_irqs_disabled() && !arch_irq_disabled_regs(regs))
local_irq_enable();