Thread (3 messages) 3 messages, 2 authors, 2020-05-26
STALE2225d

[PATCH] ARM: mm: Simplify act_mm macro

From: Linus Walleij <hidden>
Date: 2020-05-26 14:35:20
Subsystem: arm port, the rest · Maintainers: Russell King, Linus Torvalds

The act_mm assembly macro is actually partly reimplementing
get_thread_info so let's just use that.

Suggested-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Linus Walleij <redacted>
---
 arch/arm/mm/proc-macros.S | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index 60ac7c5999a9..65eaea85d3d6 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -5,7 +5,6 @@
  *  VMA_VM_FLAGS
  *  VM_EXEC
  */
-#include <linux/const.h>
 #include <asm/asm-offsets.h>
 #include <asm/thread_info.h>
 
@@ -31,9 +30,7 @@
  * act_mm - get current->active_mm
  */
 	.macro	act_mm, rd
-	bic	\rd, sp, #(THREAD_SIZE - 1) & ~63
-	bic	\rd, \rd, #63
-	ldr	\rd, [\rd, #TI_TASK]
+	get_thread_info \rd
 	.if (TSK_ACTIVE_MM > IMM12_MASK)
 	add	\rd, \rd, #TSK_ACTIVE_MM & ~IMM12_MASK
 	.endif
-- 
2.25.4


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