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OpenCloudOS-Kernel
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Remove unused arguments from preempt_{start,stop}/local_irq_{en,dis}able. 

Don't clobber the preloaded TI_FLAGS in a2 needlessly.
Unexport local functions.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thiemo Seufer 2004-12-10 12:56:33 +00:00 committed by Ralf Baechle
parent 69903d6500
commit c264852726
1 changed files with 17 additions and 18 deletions
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35
arch/mips/kernel/entry.S
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@ -19,11 +19,11 @@
#include <asm/war.h>
#ifdef CONFIG_PREEMPT
.macro preempt_stop reg=t0
.macro preempt_stop
.endm
#else
.macro preempt_stop reg=t0
local_irq_disable \reg
.macro preempt_stop
local_irq_disable
.endm
#define resume_kernel restore_all
#endif
@ -37,17 +37,17 @@ FEXPORT(ret_from_irq)
andi t0, t0, KU_USER
beqz t0, resume_kernel
FEXPORT(resume_userspace)
local_irq_disable t0 # make sure we dont miss an
resume_userspace:
local_irq_disable # make sure we dont miss an
# interrupt setting need_resched
# between sampling and return
LONG_L a2, TI_FLAGS($28) # current->work
andi a2, _TIF_WORK_MASK # (ignoring syscall_trace)
bnez a2, work_pending
andi t0, a2, _TIF_WORK_MASK # (ignoring syscall_trace)
bnez t0, work_pending
j restore_all
#ifdef CONFIG_PREEMPT
ENTRY(resume_kernel)
resume_kernel:
lw t0, TI_PRE_COUNT($28)
bnez t0, restore_all
need_resched:
@ -59,10 +59,10 @@ need_resched:
beqz t0, restore_all
li t0, PREEMPT_ACTIVE
sw t0, TI_PRE_COUNT($28)
local_irq_enable t0
local_irq_enable
jal schedule
sw zero, TI_PRE_COUNT($28)
local_irq_disable t0
local_irq_disable
b need_resched
#endif
@ -88,13 +88,13 @@ FEXPORT(restore_partial) # restore partial frame
RESTORE_SP_AND_RET
.set at
FEXPORT(work_pending)
andi t0, a2, _TIF_NEED_RESCHED
work_pending:
andi t0, a2, _TIF_NEED_RESCHED # a2 is preloaded with TI_FLAGS
beqz t0, work_notifysig
work_resched:
jal schedule
local_irq_disable t0 # make sure need_resched and
local_irq_disable # make sure need_resched and
# signals dont change between
# sampling and return
LONG_L a2, TI_FLAGS($28)
@ -113,11 +113,10 @@ work_notifysig: # deal with pending signals and
FEXPORT(syscall_exit_work_partial)
SAVE_STATIC
FEXPORT(syscall_exit_work)
LONG_L t0, TI_FLAGS($28)
li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
and t0, t1
beqz t0, work_pending # trace bit is set
syscall_exit_work:
li t0, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
and t0, a2 # a2 is preloaded with TI_FLAGS
beqz t0, work_pending # trace bit set?
local_irq_enable # could let do_syscall_trace()
# call schedule() instead
move a0, sp