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-rw-r--r--arch/sparc/kernel/syscalls.S23
1 files changed, 2 insertions, 21 deletions
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index dc4a458..1d7e274 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -110,31 +110,12 @@ sys_clone:
.globl ret_from_syscall
ret_from_syscall:
- /* Clear current_thread_info()->new_child, and
- * check performance counter stuff too.
- */
+ /* Clear current_thread_info()->new_child. */
stb %g0, [%g6 + TI_NEW_CHILD]
ldx [%g6 + TI_FLAGS], %l0
call schedule_tail
mov %g7, %o0
- andcc %l0, _TIF_PERFCTR, %g0
- be,pt %icc, 1f
- nop
- ldx [%g6 + TI_PCR], %o7
- wr %g0, %o7, %pcr
-
- /* Blackbird errata workaround. See commentary in
- * smp.c:smp_percpu_timer_interrupt() for more
- * information.
- */
- ba,pt %xcc, 99f
- nop
-
- .align 64
-99: wr %g0, %g0, %pic
- rd %pic, %g0
-
-1: ba,pt %xcc, ret_sys_call
+ ba,pt %xcc, ret_sys_call
ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
.globl sparc_exit
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