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microblaze: Adding likely macros

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On the base on GCOV analytics is helpful to add likely/unlikely
macros.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek
2010-03-23 15:37:02 +01:00
parent 13851966da
commit 78ebfa884b
6 changed files with 28 additions and 26 deletions
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24
arch/microblaze/mm/fault.c
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@@ -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++;