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authorIngo Molnar <mingo@elte.hu>2008-07-14 16:11:52 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-14 16:11:52 +0200
commit5806b81ac1c0c52665b91723fd4146a4f86e386b (patch)
tree24ea8763bf308ce1407c1de91dc8de4d2655e1c1 /arch/x86/mm/init_32.c
parentd14c8a680ccfdeb5e7b9be4d61162c2b373bd1e8 (diff)
parent6712e299b7dc78aa4971b85e803435ee6d49a9dd (diff)
Merge branch 'auto-ftrace-next' into tracing/for-linus
Conflicts: arch/x86/kernel/entry_32.S arch/x86/kernel/process_32.c arch/x86/kernel/process_64.c arch/x86/lib/Makefile include/asm-x86/irqflags.h kernel/Makefile kernel/sched.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/init_32.c')
-rw-r--r--arch/x86/mm/init_32.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 029e8cffca9..9689a5138e6 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -1035,6 +1035,8 @@ void mark_rodata_ro(void)
unsigned long start = PFN_ALIGN(_text);
unsigned long size = PFN_ALIGN(_etext) - start;
+#ifndef CONFIG_DYNAMIC_FTRACE
+ /* Dynamic tracing modifies the kernel text section */
set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
printk(KERN_INFO "Write protecting the kernel text: %luk\n",
size >> 10);
@@ -1047,6 +1049,8 @@ void mark_rodata_ro(void)
printk(KERN_INFO "Testing CPA: write protecting again\n");
set_pages_ro(virt_to_page(start), size>>PAGE_SHIFT);
#endif
+#endif /* CONFIG_DYNAMIC_FTRACE */
+
start += size;
size = (unsigned long)__end_rodata - start;
set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);