mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

MIPS: lib: Use kernel_pref & user_pref in memcpy() 

memcpy() is the only user of the PREF() & PREFE() macros from asm/asm.h.
Switch to using the kernel_pref() & user_pref() macros from
asm/asm-eva.h which fit more consistently with other abstractions of EVA
vs non-EVA instructions.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20907/
Cc: linux-mips@linux-mips.org
This commit is contained in:
Paul Burton 2018-10-15 18:33:22 +00:00
parent e2b4054399
commit 1d6fb222bd
No known key found for this signature in database
GPG Key ID: 3EA79FACB57500DD
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/mips/lib/memcpy.S
View File

@ -204,9 +204,10 @@
#define LOADB(reg, addr, handler) EXC(lb, LD_INSN, reg, addr, handler)
#define STOREB(reg, addr, handler) EXC(sb, ST_INSN, reg, addr, handler)
#define _PREF(hint, addr, type) \
#ifdef CONFIG_CPU_HAS_PREFETCH
# define _PREF(hint, addr, type) \
.if \mode == LEGACY_MODE; \
PREF(hint, addr); \
kernel_pref(hint, addr); \
.else; \
.if ((\from == USEROP) && (type == SRC_PREFETCH)) || \
((\to == USEROP) && (type == DST_PREFETCH)); \
@ -218,12 +219,15 @@
* used later on. Therefore use $v1. \
*/ \
.set at=v1; \
PREFE(hint, addr); \
user_pref(hint, addr); \
.set noat; \
.else; \
PREF(hint, addr); \
kernel_pref(hint, addr); \
.endif; \
.endif
#else
# define _PREF(hint, addr, type)
#endif
#define PREFS(hint, addr) _PREF(hint, addr, SRC_PREFETCH)
#define PREFD(hint, addr) _PREF(hint, addr, DST_PREFETCH)