aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/kernel/cpu/mtrr/generic.c
diff options
context:
space:
mode:
authorEmese Revfy <re.emese@gmail.com>2010-01-31 20:16:34 +0100
committerH. Peter Anvin <hpa@zytor.com>2010-02-01 11:20:43 -0800
commit3b9cfc0a99f88c0db7c72363620584a9b40b4543 (patch)
treef34b481d28eae0c04521a36c45bb50c1511cf5e6 /arch/x86/kernel/cpu/mtrr/generic.c
parentab658321f32770b903a4426e2a6fae0392757755 (diff)
x86, mtrr: Constify struct mtrr_ops
This is part of the ops structure constification effort started by Arjan van de Ven et al. Benefits of this constification: * prevents modification of data that is shared (referenced) by many other structure instances at runtime * detects/prevents accidental (but not intentional) modification attempts on archs that enforce read-only kernel data at runtime * potentially better optimized code as the compiler can assume that the const data cannot be changed * the compiler/linker move const data into .rodata and therefore exclude them from false sharing Signed-off-by: Emese Revfy <re.emese@gmail.com> LKML-Reference: <4B65D712.3080804@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/mtrr/generic.c')
-rw-r--r--arch/x86/kernel/cpu/mtrr/generic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index 55da0c5f68d..4d755846fee 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -752,7 +752,7 @@ int positive_have_wrcomb(void)
/*
* Generic structure...
*/
-struct mtrr_ops generic_mtrr_ops = {
+const struct mtrr_ops generic_mtrr_ops = {
.use_intel_if = 1,
.set_all = generic_set_all,
.get = generic_get_mtrr,