Commit fd7826d5 authored by Robert Richter's avatar Robert Richter
Browse files

oprofile: implement switch/case in buffer_sync.c 



Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent fe615cbf

drivers/oprofile/buffer_sync.c

+14 −8
Original line number Diff line number Diff line
@@ -561,6 +561,7 @@ void sync_buffer(int cpu) 
{

	struct oprofile_cpu_buffer *cpu_buf = &per_cpu(cpu_buffer, cpu);

	struct mm_struct *mm = NULL;

	struct mm_struct *oldmm;

	struct task_struct *new;

	unsigned long cookie = 0;

	int in_kernel = 1;
@@ -586,34 +587,39 @@ void sync_buffer(int cpu) 
		struct op_sample *s = &cpu_buf->buffer[cpu_buf->tail_pos];



		if (is_code(s->eip)) {

			if (s->event <= CPU_IS_KERNEL) {

			switch (s->event) {

			case 0:

			case CPU_IS_KERNEL:

				/* kernel/userspace switch */

				in_kernel = s->event;

				if (state == sb_buffer_start)

					state = sb_sample_start;

				add_kernel_ctx_switch(s->event);

			} else if (s->event == CPU_TRACE_BEGIN) {

				break;

			case CPU_TRACE_BEGIN:

				state = sb_bt_start;

				add_trace_begin();

				break;

#ifdef CONFIG_OPROFILE_IBS

			} else if (s->event == IBS_FETCH_BEGIN) {

			case IBS_FETCH_BEGIN:

				state = sb_bt_start;

				add_ibs_begin(cpu_buf, IBS_FETCH_CODE, mm);

			} else if (s->event == IBS_OP_BEGIN) {

				break;

			case IBS_OP_BEGIN:

				state = sb_bt_start;

				add_ibs_begin(cpu_buf, IBS_OP_CODE, mm);

				break;

#endif

			} else {

				struct mm_struct *oldmm = mm;



			default:

				/* userspace context switch */

				oldmm = mm;

				new = (struct task_struct *)s->event;



				release_mm(oldmm);

				mm = take_tasks_mm(new);

				if (mm != oldmm)

					cookie = get_exec_dcookie(mm);

				add_user_ctx_switch(new, cookie);

				break;

			}

		} else if (state >= sb_bt_start &&

			   !add_sample(mm, s, in_kernel)) {