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Diffstat (limited to 'drivers/oprofile/buffer_sync.c')
-rw-r--r--drivers/oprofile/buffer_sync.c42
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 908202afbae9..d969bb13a252 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -1,11 +1,12 @@
/**
* @file buffer_sync.c
*
- * @remark Copyright 2002 OProfile authors
+ * @remark Copyright 2002-2009 OProfile authors
* @remark Read the file COPYING
*
* @author John Levon <levon@movementarian.org>
* @author Barry Kasindorf
+ * @author Robert Richter <robert.richter@amd.com>
*
* This is the core of the buffer management. Each
* CPU buffer is processed and entered into the
@@ -529,6 +530,7 @@ void sync_buffer(int cpu)
sync_buffer_state state = sb_buffer_start;
unsigned int i;
unsigned long available;
+ unsigned long flags;
struct op_entry entry;
struct op_sample *sample;
@@ -545,38 +547,34 @@ void sync_buffer(int cpu)
break;
if (is_code(sample->eip)) {
- switch (sample->event) {
- case 0:
- case CPU_IS_KERNEL:
+ flags = sample->event;
+ if (flags & TRACE_BEGIN) {
+ state = sb_bt_start;
+ add_trace_begin();
+ }
+ if (flags & KERNEL_CTX_SWITCH) {
/* kernel/userspace switch */
- in_kernel = sample->event;
+ in_kernel = flags & IS_KERNEL;
if (state == sb_buffer_start)
state = sb_sample_start;
- add_kernel_ctx_switch(sample->event);
- break;
- case CPU_TRACE_BEGIN:
- state = sb_bt_start;
- add_trace_begin();
- break;
-#ifdef CONFIG_OPROFILE_IBS
- case IBS_FETCH_BEGIN:
- add_ibs_begin(cpu, IBS_FETCH_CODE, mm);
- break;
- case IBS_OP_BEGIN:
- add_ibs_begin(cpu, IBS_OP_CODE, mm);
- break;
-#endif
- default:
+ add_kernel_ctx_switch(flags & IS_KERNEL);
+ }
+ if (flags & USER_CTX_SWITCH) {
/* userspace context switch */
oldmm = mm;
- new = (struct task_struct *)sample->event;
+ new = (struct task_struct *)sample->data[0];
release_mm(oldmm);
mm = take_tasks_mm(new);
if (mm != oldmm)
cookie = get_exec_dcookie(mm);
add_user_ctx_switch(new, cookie);
- break;
}
+#ifdef CONFIG_OPROFILE_IBS
+ if (flags & IBS_FETCH_BEGIN)
+ add_ibs_begin(cpu, IBS_FETCH_CODE, mm);
+ if (flags & IBS_OP_BEGIN)
+ add_ibs_begin(cpu, IBS_OP_CODE, mm);
+#endif
continue;
}