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authorArjan van de Ven <arjan@linux.intel.com>2007-02-12 00:55:31 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:44 -0800
commit5dfe4c964a0dd7bb3a1d64a4166835a153146207 (patch)
tree2fb2fd8c09922be4f40a5a9ac50b537b1d780e27 /arch/i386
parent540473208f8ac71c25a87e1a2670c3c18dd4d6db (diff)
[PATCH] mark struct file_operations const 2
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. [akpm@osdl.org: sparc64 fix] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386')
-rw-r--r--arch/i386/kernel/apm.c2
-rw-r--r--arch/i386/kernel/cpu/mtrr/if.c2
-rw-r--r--arch/i386/kernel/cpuid.c2
-rw-r--r--arch/i386/kernel/microcode.c2
-rw-r--r--arch/i386/kernel/msr.c2
5 files changed, 5 insertions, 5 deletions
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c
index 19901692754..db99a8948da 100644
--- a/arch/i386/kernel/apm.c
+++ b/arch/i386/kernel/apm.c
@@ -1894,7 +1894,7 @@ static int __init apm_setup(char *str)
__setup("apm=", apm_setup);
#endif
-static struct file_operations apm_bios_fops = {
+static const struct file_operations apm_bios_fops = {
.owner = THIS_MODULE,
.read = do_read,
.poll = do_poll,
diff --git a/arch/i386/kernel/cpu/mtrr/if.c b/arch/i386/kernel/cpu/mtrr/if.c
index 5ae1705eafa..ee771f305f9 100644
--- a/arch/i386/kernel/cpu/mtrr/if.c
+++ b/arch/i386/kernel/cpu/mtrr/if.c
@@ -339,7 +339,7 @@ static int mtrr_open(struct inode *inode, struct file *file)
return single_open(file, mtrr_seq_show, NULL);
}
-static struct file_operations mtrr_fops = {
+static const struct file_operations mtrr_fops = {
.owner = THIS_MODULE,
.open = mtrr_open,
.read = seq_read,
diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c
index 51130b39cd2..4da75fa3208 100644
--- a/arch/i386/kernel/cpuid.c
+++ b/arch/i386/kernel/cpuid.c
@@ -148,7 +148,7 @@ static int cpuid_open(struct inode *inode, struct file *file)
/*
* File operations we support
*/
-static struct file_operations cpuid_fops = {
+static const struct file_operations cpuid_fops = {
.owner = THIS_MODULE,
.llseek = cpuid_seek,
.read = cpuid_read,
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index c8fa13721bc..381252bae3d 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -451,7 +451,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_
return ret;
}
-static struct file_operations microcode_fops = {
+static const struct file_operations microcode_fops = {
.owner = THIS_MODULE,
.write = microcode_write,
.open = microcode_open,
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index 4a472a17d1c..4e14264f392 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -230,7 +230,7 @@ static int msr_open(struct inode *inode, struct file *file)
/*
* File operations we support
*/
-static struct file_operations msr_fops = {
+static const struct file_operations msr_fops = {
.owner = THIS_MODULE,
.llseek = msr_seek,
.read = msr_read,