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authorJan Beulich <JBeulich@suse.com>2014-11-04 08:26:42 +0000
committerThomas Gleixner <tglx@linutronix.de>2014-11-04 20:13:28 +0100
commit2c773dd31fbacbbb6425f8a9d3f97e0010272368 (patch)
tree6f531b6c8527ec2adf2b892dc1b9e98be9526407 /arch/x86/kernel/setup_percpu.c
parentfb7183ef3c016d9067ff83f3ff2455be1818f902 (diff)
download96b-common-2c773dd31fbacbbb6425f8a9d3f97e0010272368.tar.gz
x86: Convert a few more per-CPU items to read-mostly ones
Both this_cpu_off and cpu_info aren't getting modified post boot, yet are being accessed on enough code paths that grouping them with other frequently read items seems desirable. For cpu_info this at the same time implies removing the cache line alignment (which afaict became pointless when it got converted to per-CPU data years ago). Signed-off-by: Jan Beulich <jbeulich@suse.com> Link: http://lkml.kernel.org/r/54589BD20200007800044A84@mail.emea.novell.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/setup_percpu.c')
-rw-r--r--arch/x86/kernel/setup_percpu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 5cdff0357746..e4fcb87ba7a6 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -30,7 +30,7 @@ EXPORT_PER_CPU_SYMBOL(cpu_number);
#define BOOT_PERCPU_OFFSET 0
#endif
-DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
+DEFINE_PER_CPU_READ_MOSTLY(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
EXPORT_PER_CPU_SYMBOL(this_cpu_off);
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {