linux-kernel - [PATCH] Move mostly read variables to __read

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Message-ID: <4EA45BB8.20505@scalemp.com>
Date:	Sun, 23 Oct 2011 20:23:52 +0200
From:	Eial Czerwacki <eial@...lemp.com>
To:	linux-kernel@...r.kernel.org
CC:	"Shai Fultheim (Shai@...leMP.com)" <Shai@...lemp.com>
Subject: [PATCH] Move mostly read variables to __read_mostly section.


Move mostly read variables to __read_mostly section.

Signed-off-by: Eial Czerwacki<eial@...leMP.com>
Signed-off-by: Shai Fultheim<Shai@...leMP.com>
---

--- a/fs/buffer.c	2010-05-12 14:59:32.000000000 -0700
+++ b/fs/buffer.c	2010-05-24 11:56:32.000000000 -0700
@@ -3233,7 +3233,7 @@ SYSCALL_DEFINE2(bdflush, int, func, long
  /*
   * Buffer-head allocation
   */
-static struct kmem_cache *bh_cachep;
+static struct kmem_cache __read_mostly *bh_cachep;

  /*
   * Once the number of bh's in the machine exceeds this level, we start
--- a/kernel/time/timekeeping.c	2010-05-12 14:59:32.000000000 -0700
+++ b/kernel/time/timekeeping.c	2010-05-24 11:56:32.000000000 -0700
@@ -154,7 +154,7 @@ __cacheline_aligned_in_smp DEFINE_SEQLOC
   * used instead.
   */
  static struct timespec xtime __attribute__ ((aligned (16)));
-static struct timespec wall_to_monotonic __attribute__ ((aligned (16)));
+static struct timespec wall_to_monotonic __attribute__ ((aligned (16))) __read_mostly;
  static struct timespec total_sleep_time;

  /*



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