Hi Noah, On 04/13/2014 11:55 PM, Noah Luther wrote: > Hello, > > I am trying to use perf to trace branches as described by the 'perf > branch' subcommand. Is there support through perf_event_open to access > the buffer storing branch traces? I saw Akihiro Nagai's presentation > on 'perf branch', but haven't yet figured out how to enable BTS and > access the buffer based on the documentation on this page: > > http://web.eece.maine.edu/~vweaver/projects/perf_events/perf_event_open.html > > If there are any resources that might be of use to me, I would > appreciate any assistance.
In the past I've found the test suite to be a useful reference. Here's a test that looks like it might serve as a jumping-off point. https://github.com/deater/perf_event_tests/blob/master/tests/record_sample/sample_branch_stack.c Regards, Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation. -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
