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Date: Sun, 24 May 2015 21:19:44 +0200 From: Andi Kleen <andi@...stfloor.org> To: Jiri Olsa <jolsa@...hat.com> Cc: Andi Kleen <andi@...stfloor.org>, acme@...nel.org, linux-kernel@...r.kernel.org, namhyung@...nel.org, eranian@...gle.com Subject: Re: Cycles annotation support for perf tools On Sun, May 24, 2015 at 08:55:00PM +0200, Jiri Olsa wrote: > On Sun, May 10, 2015 at 06:51:56AM -0700, Andi Kleen wrote: > > The upcoming Skylake CPU has a new timed branch stack feature, > > that reports cycle counts for individual branches in the > > last branch record. > > > > This allows to get fine grained cost information for code, and also allows > > to compute fine grained IPC. > > > > This patchkit adds support for this in the perf tools: > > - Basic support for the cycles field like other branch fields > > - Show cycles in the standard branch sort view (no IPC here, > > as IPC needs the instruction counts from annotation) > > - Annotate cycles and IPC in the assembler annotate view > > - Add branch support to top, so we can do live annotation. > > - Misc support, like dumping it in perf report -D > > hi, > do you have a branch with this change? git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc perf/skl-tools1 This version contains one bugfix over the posted version. -Andi -- ak@...ux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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