On 06/10/2015 08:51 AM, Daniel Axtens wrote: > Hi Anshuman, > > Was there a cover letter for this series that I missed?
This is the continuation (rebased and reworked) of the series posted at https://lkml.org/lkml/2014/5/5/153 (which is V6). I remember to have incremented the count for the re-send of the first four patches of the series to Peter Z for generic review which got pulled in last year. These patches here are the remaining powerpc part of the original series. Will list down the current changes as well next time around along with the new ones. > > On Mon, 2015-06-08 at 17:08 +0530, Anshuman Khandual wrote: >> BHRB is a rolling buffer. Hence we might end up in a situation where > Could you spell out what BHRB stands for? Branch History Rolling Buffer, would you like to have that in the commit message as well ? > >> we have read one target address but when we try to read the next entry >> indicating the from address of the targe, the buffer just overflows. > target? Yeah its target address. > >> In this case, the captured from address will be zero which indicates >> the end of the buffer. >> > In what sort of situations would this occur? It seems like something we > would want to avoid if possible? Its not avoidable. During regular flow of branch recording, the HW would have written both the records correctly but then the new ones came in and we just happen to loose one of them causing this situation. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev