linux-kernel - [PATCH v2] percpu: remove PERCPU_ENOUGH

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Date:	Wed,  4 Nov 2015 13:26:07 +0000
From:	Jungseok Lee <jungseoklee85@...il.com>
To:	tj@...nel.org, cl@...ux.com, tony.luck@...el.com,
	fenghua.yu@...el.com, linux-mm@...ck.org,
	linux-ia64@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH v2] percpu: remove PERCPU_ENOUGH_ROOM which is stale definition

As pure cleanup, this patch removes PERCPU_ENOUGH_ROOM which is not
used any more. That is, no code refers to the definition.

Acked-by: Christoph Lameter <cl@...ux.com>
Signed-off-by: Jungseok Lee <jungseoklee85@...il.com>
---
I've kept Acked-by from Christoph since there is no change in generic
percpu code between v1 and v2.

Changes since v1:
- Removed PERCPU_ENOUGH_ROOM from ia64

 arch/ia64/include/asm/percpu.h | 2 --
 include/linux/percpu.h         | 6 ------
 2 files changed, 8 deletions(-)

diff --git a/arch/ia64/include/asm/percpu.h b/arch/ia64/include/asm/percpu.h
index 0ec484d..b929579 100644
--- a/arch/ia64/include/asm/percpu.h
+++ b/arch/ia64/include/asm/percpu.h
@@ -6,8 +6,6 @@
  *	David Mosberger-Tang <davidm@....hp.com>
  */
 
-#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE
-
 #ifdef __ASSEMBLY__
 # define THIS_CPU(var)	(var)  /* use this to mark accesses to per-CPU variables... */
 #else /* !__ASSEMBLY__ */
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index caebf2a..4bc6daf 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -18,12 +18,6 @@
 #define PERCPU_MODULE_RESERVE		0
 #endif
 
-#ifndef PERCPU_ENOUGH_ROOM
-#define PERCPU_ENOUGH_ROOM						\
-	(ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES) +	\
-	 PERCPU_MODULE_RESERVE)
-#endif
-
 /* minimum unit size, also is the maximum supported allocation size */
 #define PCPU_MIN_UNIT_SIZE		PFN_ALIGN(32 << 10)
 
-- 
2.5.0

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