Em Tue, Feb 13, 2018 at 03:18:02PM -0700, Mathieu Poirier escreveu: > On 7 February 2018 at 06:57, Robert Walker <[email protected]> wrote: > > Added user space perf functionality to translate CoreSight traces into > > instruction events with branch stack. > > > > To invoke the new functionality, use the perf inject > > tool with --itrace=il. For example, to translate the ETM trace from > > perf.data into last branch records in a new inj.data file: > > > > $ perf inject --itrace=i100000il128 -i perf.data -o perf.data.new > > > > The 'i' parameter to itrace generates periodic instruction events. The > > period between instruction events can be specified as a number of > > instructions suffixed by i (default 100000). > > The parameter to 'l' specifies the number of entries in the branch stack > > attached to instruction events. > > The 'b' parameter to itrace generates events on taken branches. > > > > This patch also fixes the contents of the branch events used in perf report > > - previously branch events were generated for each contiguous range of > > instructions executed. These are fixed to generate branch events between > > the last address of a range ending in an executed branch instruction and > > the start address of the next range. > > > > Based on patches by Sebastian Pop <[email protected]> with additional fixes > > and support for specifying the instruction period. > > > > Originally-by: Sebastian Pop <[email protected]> > > Signed-off-by: Robert Walker <[email protected]> > > Acked-by: Mathieu Poirier <[email protected]> > > Arnaldo - this should probably go through your tree but let me know if > you want to proceed otherwise.
I can pick it, but now I'm waiting for Robert to address your comments, so haven't processed none of these two. - Arnaldo > Robert - the work in coresight.txt should likely be published on its > own. That way Arnaldo doesn't have to worry about it.
