AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-30 06:56:46 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

[MIPS] Make entry.S a little more readable.

Browse Source 
When CONFIG_PREEMPT is not set, it also moves one branch instruction from
ret_from_irq() to ret_from_exception().  Therefore we favour the return
from irq case which should be more common than the other one.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Franck Bui-Huu 2007-02-13 14:50:18 +01:00 committed by Ralf Baechle
parent 6f3aa38e19
commit 7da8a581f5
1 changed files with 8 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
arch/mips/kernel/entry.S
View File

@ -21,24 +21,21 @@
#endif
#ifndef CONFIG_PREEMPT
.macro preempt_stop
local_irq_disable
.endm
#define resume_kernel restore_all
#else
#define __ret_from_irq ret_from_exception
#endif
.text
.align 5
#ifndef CONFIG_PREEMPT
FEXPORT(ret_from_exception)
local_irq_disable # preempt stop
b __ret_from_irq
#endif
FEXPORT(ret_from_irq)
LONG_S s0, TI_REGS($28)
#ifdef CONFIG_PREEMPT
FEXPORT(ret_from_exception)
#else
b _ret_from_irq
FEXPORT(ret_from_exception)
preempt_stop
#endif
FEXPORT(_ret_from_irq)
FEXPORT(__ret_from_irq)
LONG_L t0, PT_STATUS(sp) # returning to kernel mode?
andi t0, t0, KU_USER
beqz t0, resume_kernel