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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>
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Ralf Baechle committed Oct 29, 2005
1 parent 0964ce2 commit b188ffe
Showing 1 changed file with 3 additions and 0 deletions.
3 changes: 3 additions & 0 deletions arch/mips/kernel/gdb-stub.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
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