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authorMichal Simek <monstr@monstr.eu>2010-03-23 15:37:02 +0100
committerMichal Simek <monstr@monstr.eu>2010-04-01 08:38:24 +0200
commit78ebfa884bcef125464399f8d1cb05937bfeb6e1 (patch)
tree594faeddafb18ab0deca09ef5cc119d21aee4e0e /arch/microblaze/mm
parent13851966da54be8e37863aa93ee2c8f3d3a3186a (diff)
downloadlinux-78ebfa884bcef125464399f8d1cb05937bfeb6e1.tar.gz
microblaze: Adding likely macros
On the base on GCOV analytics is helpful to add likely/unlikely macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/mm')
-rw-r--r--arch/microblaze/mm/fault.c24
-rw-r--r--arch/microblaze/mm/pgtable.c2
2 files changed, 13 insertions, 13 deletions
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index d9d249a66ff..7af87f4b2c2 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -106,7 +106,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
regs->esr = error_code;
/* On a kernel SLB miss we can only check for a valid exception entry */
- if (kernel_mode(regs) && (address >= TASK_SIZE)) {
+ if (unlikely(kernel_mode(regs) && (address >= TASK_SIZE))) {
printk(KERN_WARNING "kernel task_size exceed");
_exception(SIGSEGV, regs, code, address);
}
@@ -122,7 +122,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
}
#endif /* CONFIG_KGDB */
- if (in_atomic() || !mm) {
+ if (unlikely(in_atomic() || !mm)) {
if (kernel_mode(regs))
goto bad_area_nosemaphore;
@@ -150,7 +150,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
* source. If this is invalid we can skip the address space check,
* thus avoiding the deadlock.
*/
- if (!down_read_trylock(&mm->mmap_sem)) {
+ if (unlikely(!down_read_trylock(&mm->mmap_sem))) {
if (kernel_mode(regs) && !search_exception_tables(regs->pc))
goto bad_area_nosemaphore;
@@ -158,16 +158,16 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
}
vma = find_vma(mm, address);
- if (!vma)
+ if (unlikely(!vma))
goto bad_area;
if (vma->vm_start <= address)
goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
+ if (unlikely(!(vma->vm_flags & VM_GROWSDOWN)))
goto bad_area;
- if (!is_write)
+ if (unlikely(!is_write))
goto bad_area;
/*
@@ -179,7 +179,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
* before setting the user r1. Thus we allow the stack to
* expand to 1MB without further checks.
*/
- if (address + 0x100000 < vma->vm_end) {
+ if (unlikely(address + 0x100000 < vma->vm_end)) {
/* get user regs even if this fault is in kernel mode */
struct pt_regs *uregs = current->thread.regs;
@@ -209,15 +209,15 @@ good_area:
code = SEGV_ACCERR;
/* a write */
- if (is_write) {
- if (!(vma->vm_flags & VM_WRITE))
+ if (unlikely(is_write)) {
+ if (unlikely(!(vma->vm_flags & VM_WRITE)))
goto bad_area;
/* a read */
} else {
/* protection fault */
- if (error_code & 0x08000000)
+ if (unlikely(error_code & 0x08000000))
goto bad_area;
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+ if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC))))
goto bad_area;
}
@@ -235,7 +235,7 @@ survive:
goto do_sigbus;
BUG();
}
- if (fault & VM_FAULT_MAJOR)
+ if (unlikely(fault & VM_FAULT_MAJOR))
current->maj_flt++;
else
current->min_flt++;
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 63a6fd07c48..d31312cde6e 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -154,7 +154,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
err = 0;
set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
__pgprot(flags)));
- if (mem_init_done)
+ if (unlikely(mem_init_done))
flush_HPTE(0, va, pmd_val(*pd));
/* flush_HPTE(0, va, pg); */
}