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Commit 8350c787 authored by Robert Richter's avatar Robert Richter
Browse files

oprofile: remove backtrace code for ibs 



This code is broken since a TRACE_BEGIN_CODE is never sent to the
daemon. The data becomes corrupt since the backtrace is interpreted as
ibs sample.

Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent f4ff2364

drivers/oprofile/buffer_sync.c

+0 −2
Original line number Diff line number Diff line
@@ -557,11 +557,9 @@ void sync_buffer(int cpu) 
				break;

#ifdef CONFIG_OPROFILE_IBS

			case IBS_FETCH_BEGIN:

				state = sb_bt_start;

				add_ibs_begin(cpu, IBS_FETCH_CODE, mm);

				break;

			case IBS_OP_BEGIN:

				state = sb_bt_start;

				add_ibs_begin(cpu, IBS_OP_CODE, mm);

				break;

#endif

drivers/oprofile/cpu_buffer.c

+2 −8
Original line number Diff line number Diff line
@@ -347,17 +347,11 @@ void oprofile_add_ibs_sample(struct pt_regs * const regs, 
		fail = fail || add_sample(cpu_buf, ibs_sample[10], ibs_sample[11]);

	}



	if (fail)

		goto fail;



	if (oprofile_backtrace_depth)

		oprofile_ops.backtrace(regs, oprofile_backtrace_depth);



	if (!fail)

		return;



fail:

	cpu_buf->sample_lost_overflow++;

	return;

}



#endif