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Fix build with SMP disabled and preemption enabled.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2004-12-28 07:49:43 +00:00
parent 0964ce24d0
commit b188ffe876
1 changed files with 3 additions and 0 deletions
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3
arch/mips/kernel/gdb-stub.c
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@ -637,15 +637,18 @@ static struct gdb_bp_save async_bp;
* and only one can be active at a time.
*/
extern spinlock_t smp_call_lock;
void set_async_breakpoint(unsigned long *epc)
{
/* skip breaking into userland */
if ((*epc & 0x80000000) == 0)
return;
#ifdef CONFIG_SMP
/* avoid deadlock if someone is make IPC */
if (spin_is_locked(&smp_call_lock))
return;
#endif
async_bp.addr = *epc;
*epc = (unsigned long)async_breakpoint;