oprofile: implement switch/case in buffer_sync.c (fd7826d5) · Commits · e / devices / android_kernel_fairphone_FP5

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)) {