Messages in this thread | | | From | Namhyung Kim <> | Subject | Re: [RFC][PATCH 0/6] Another go at speculative page faults | Date | Tue, 28 Oct 2014 14:32:16 +0900 |
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Hi Peter,
On Fri, 24 Oct 2014 15:14:40 +0200, Peter Zijlstra wrote: > On Fri, Oct 24, 2014 at 09:54:23AM +0200, Ingo Molnar wrote: >> >> * Peter Zijlstra <peterz@infradead.org> wrote: >> > Its what I thought initially, I tried doing perf record with and >> > without, but then I ran into perf diff not quite working for me and I've >> > yet to find time to kick that thing into shape. >> >> Might be the 'perf diff' regression fixed by this: >> >> 9ab1f50876db perf diff: Add missing hists__init() call at tool start >> >> I just pushed it out into tip:master. > > I was on tip/master, so unlikely to be that as I was likely already > having it. > > perf-report was affected too, for some reason my CONFIG_DEBUG_INFO=y > vmlinux wasn't showing symbols (and I double checked that KASLR crap was > disabled, so that wasn't confusing stuff either). > > When I forced perf-report to use kallsyms it works, however perf-diff > doesn't have that option. > > So there's two issues there, 1) perf-report failing to generate useful > output and 2) per-diff lacking options to force it to behave.
Did the perf-report fail to show any (kernel) symbols or are they wrong symbols? Maybe it's related to this:
https://lkml.org/lkml/2014/9/22/78
Thanks, Namhyung
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