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authorLinus Torvalds <torvalds@linux-foundation.org>2009-02-11 08:22:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-11 08:22:26 -0800
commitb3f2caaaa82440af06b39c2c92e4fa8122d75465 (patch)
tree62338ae23ff00ec98773a1a9d768a303740a4dfa
parent93431dd7afa908292753acccb68785efaa366f5b (diff)
parentf47a454db9129d2e61b224a40f4365cdd4f83042 (diff)
downloadlinux-b3f2caaaa82440af06b39c2c92e4fa8122d75465.tar.bz2
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing, x86: fix constraint for parent variable tracing, x86: fix fixup section to return to original code profiling: fix broken profiling regression
-rw-r--r--arch/x86/kernel/ftrace.c17
-rw-r--r--kernel/profile.c3
2 files changed, 12 insertions, 8 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 1b43086b097a..231bdd3c5b1c 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -488,20 +488,21 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
* ignore such a protection.
*/
asm volatile(
- "1: " _ASM_MOV " (%[parent_old]), %[old]\n"
- "2: " _ASM_MOV " %[return_hooker], (%[parent_replaced])\n"
+ "1: " _ASM_MOV " (%[parent]), %[old]\n"
+ "2: " _ASM_MOV " %[return_hooker], (%[parent])\n"
" movl $0, %[faulted]\n"
+ "3:\n"
".section .fixup, \"ax\"\n"
- "3: movl $1, %[faulted]\n"
+ "4: movl $1, %[faulted]\n"
+ " jmp 3b\n"
".previous\n"
- _ASM_EXTABLE(1b, 3b)
- _ASM_EXTABLE(2b, 3b)
+ _ASM_EXTABLE(1b, 4b)
+ _ASM_EXTABLE(2b, 4b)
- : [parent_replaced] "=r" (parent), [old] "=r" (old),
- [faulted] "=r" (faulted)
- : [parent_old] "0" (parent), [return_hooker] "r" (return_hooker)
+ : [old] "=r" (old), [faulted] "=r" (faulted)
+ : [parent] "r" (parent), [return_hooker] "r" (return_hooker)
: "memory"
);
diff --git a/kernel/profile.c b/kernel/profile.c
index 784933acf5b8..7724e0409bae 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -114,12 +114,15 @@ int __ref profile_init(void)
if (!slab_is_available()) {
prof_buffer = alloc_bootmem(buffer_bytes);
alloc_bootmem_cpumask_var(&prof_cpu_mask);
+ cpumask_copy(prof_cpu_mask, cpu_possible_mask);
return 0;
}
if (!alloc_cpumask_var(&prof_cpu_mask, GFP_KERNEL))
return -ENOMEM;
+ cpumask_copy(prof_cpu_mask, cpu_possible_mask);
+
prof_buffer = kzalloc(buffer_bytes, GFP_KERNEL);
if (prof_buffer)
return 0;