linux-kernel - [PATCH tip/core/rcu 09/15] ARM: Cleanup PREEMPT

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Message-Id: <20200928233102.24265-9-paulmck@kernel.org>
Date:   Mon, 28 Sep 2020 16:30:56 -0700
From:   paulmck@...nel.org
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        mathieu.desnoyers@...icios.com, josh@...htriplett.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, fweisbec@...il.com,
        oleg@...hat.com, joel@...lfernandes.org, mhocko@...nel.org,
        mgorman@...hsingularity.net, torvalds@...ux-foundation.org,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH tip/core/rcu 09/15] ARM: Cleanup PREEMPT_COUNT leftovers

From: Thomas Gleixner <tglx@...utronix.de>

CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be
removed. Cleanup the leftovers before doing so.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Russell King <linux@...linux.org.uk>
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 arch/arm/include/asm/assembler.h   | 11 -----------
 arch/arm/kernel/iwmmxt.S           |  2 --
 arch/arm/mach-ep93xx/crunch-bits.S |  2 --
 3 files changed, 15 deletions(-)

diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index feac2c8..fce52eed 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -212,7 +212,6 @@
 /*
  * Increment/decrement the preempt count.
  */
-#ifdef CONFIG_PREEMPT_COUNT
 	.macro	inc_preempt_count, ti, tmp
 	ldr	\tmp, [\ti, #TI_PREEMPT]	@ get preempt count
 	add	\tmp, \tmp, #1			@ increment it
@@ -229,16 +228,6 @@
 	get_thread_info \ti
 	dec_preempt_count \ti, \tmp
 	.endm
-#else
-	.macro	inc_preempt_count, ti, tmp
-	.endm
-
-	.macro	dec_preempt_count, ti, tmp
-	.endm
-
-	.macro	dec_preempt_count_ti, ti, tmp
-	.endm
-#endif
 
 #define USERL(l, x...)				\
 9999:	x;					\
diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S
index 0dcae78..1f845be 100644
--- a/arch/arm/kernel/iwmmxt.S
+++ b/arch/arm/kernel/iwmmxt.S
@@ -94,9 +94,7 @@ ENTRY(iwmmxt_task_enable)
 	mov	r2, r2				@ cpwait
 	bl	concan_save
 
-#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info r10
-#endif
 4:	dec_preempt_count r10, r3
 	ret	r9				@ normal exit from exception
 
diff --git a/arch/arm/mach-ep93xx/crunch-bits.S b/arch/arm/mach-ep93xx/crunch-bits.S
index fb2dbf7..0aabcf4 100644
--- a/arch/arm/mach-ep93xx/crunch-bits.S
+++ b/arch/arm/mach-ep93xx/crunch-bits.S
@@ -191,9 +191,7 @@ crunch_load:
 	cfldr64		mvdx15, [r0, #CRUNCH_MVDX15]
 
 1:
-#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info r10
-#endif
 2:	dec_preempt_count r10, r3
 	ret	lr
 
-- 
2.9.5