sparc: Use preempt_schedule_irq

The low level preemption code fiddles with the PREEMPT_ACTIVE bit for
no reason and calls schedule() with interrupts disabled, which is
wrong to begin with. Remove the PREEMPT_ACTIVE fiddling and call the
proper schedule_preempt_irq() function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20130917183628.966769884@linutronix.de

diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index afa2a9e..76213db 100644 (file)
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -306,12 +306,10 @@ to_kernel:
                 nop
                cmp                     %l4, 0
                bne,pn                  %xcc, kern_fpucheck
-                sethi                  %hi(PREEMPT_ACTIVE), %l6
-               stw                     %l6, [%g6 + TI_PRE_COUNT]
-               call                    schedule
+                nop
+               call                    preempt_schedule_irq
                 nop
                ba,pt                   %xcc, rtrap
-                stw                    %g0, [%g6 + TI_PRE_COUNT]
 #endif
 kern_fpucheck: ldub                    [%g6 + TI_FPDEPTH], %l5
                brz,pt                  %l5, rt_continue