/* To avoid latency problems, we only process the current CPU,
* hoping that most samples for the task are on this CPU
*/
- sync_buffer(_smp_processor_id());
+ sync_buffer(raw_smp_processor_id());
return 0;
}
/* To avoid latency problems, we only process the current CPU,
* hoping that most samples for the task are on this CPU
*/
- sync_buffer(_smp_processor_id());
+ sync_buffer(raw_smp_processor_id());
return 0;
}
*/
static unsigned long get_exec_dcookie(struct mm_struct * mm)
{
- unsigned long cookie = 0;
+ unsigned long cookie = NO_COOKIE;
struct vm_area_struct * vma;
if (!mm)
*/
static unsigned long lookup_dcookie(struct mm_struct * mm, unsigned long addr, off_t * offset)
{
- unsigned long cookie = 0;
+ unsigned long cookie = NO_COOKIE;
struct vm_area_struct * vma;
for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
- if (!vma->vm_file)
- continue;
-
if (addr < vma->vm_start || addr >= vma->vm_end)
continue;
- cookie = fast_get_dcookie(vma->vm_file->f_dentry,
- vma->vm_file->f_vfsmnt);
- *offset = (vma->vm_pgoff << PAGE_SHIFT) + addr - vma->vm_start;
+ if (vma->vm_file) {
+ cookie = fast_get_dcookie(vma->vm_file->f_dentry,
+ vma->vm_file->f_vfsmnt);
+ *offset = (vma->vm_pgoff << PAGE_SHIFT) + addr -
+ vma->vm_start;
+ } else {
+ /* must be an anonymous map */
+ *offset = addr;
+ }
+
break;
}
+ if (!vma)
+ cookie = INVALID_COOKIE;
+
return cookie;
}
-static unsigned long last_cookie = ~0UL;
+static unsigned long last_cookie = INVALID_COOKIE;
static void add_cpu_switch(int i)
{
add_event_entry(ESCAPE_CODE);
add_event_entry(CPU_SWITCH_CODE);
add_event_entry(i);
- last_cookie = ~0UL;
+ last_cookie = INVALID_COOKIE;
}
static void add_kernel_ctx_switch(unsigned int in_kernel)
cookie = lookup_dcookie(mm, s->eip, &offset);
- if (!cookie) {
+ if (cookie == INVALID_COOKIE) {
atomic_inc(&oprofile_stats.sample_lost_no_mapping);
return 0;
}