Messages in this thread | | | Date | Thu, 21 Nov 2013 08:15:29 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH 07/22] tools lib traceevent: Add kvm plugin |
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On Thu, 21 Nov 2013 12:01:05 +0100 Jiri Olsa <jolsa@redhat.com> wrote:
> Backporting kvm plugin. > > Backported from Steven Rostedt's trace-cmd repo (HEAD 0f2c2fb): > git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git > > This plugin adds field resolving functions for following > tracepoint events: > kvm:kvm_exit > kvm:kvm_emulate_insn > kvm:kvm_nested_vmexit > kvm:kvm_nested_vmexit_inject > kvmmmu:kvm_mmu_get_page > kvmmmu:kvm_mmu_sync_page > kvmmmu:kvm_mmu_unsync_page > kvmmmu:kvm_mmu_zap_page > kvmmmu:kvm_mmu_prepare_zap_page > > The diff of 'perf script' output generated by old and new code: > (data was generated by 'perf record -e 'kvm:*,kvmmmu:*' -a') > > --- script.kvm.old > +++ script.kvm.new > qemu-system-x86 17414 [000] 6868.995053: kvm:kvm_exit: reason EPT_VIOLATION rip 0xfff0 info 184 0 > qemu-system-x86 17414 [000] 6868.995109: kvm:kvm_emulate_insn: f0000:c46b:e4 71 (real) > - qemu-system-x86 3006 [002] 10562.079422: kvmmmu:kvm_mmu_get_page: [FAILED TO PARSE] mmu_valid_gen=0x2 gfn=0 role=122884 root_count=0 unsync=0 created=1 > + qemu-system-x86 3006 [002] 10562.079422: kvmmmu:kvm_mmu_get_page: new sp gfn 0 0/4 q0 direct --- !pge !nxe root 0 sync > - qemu-system-x86 3006 [002] 10562.080502: kvmmmu:kvm_mmu_prepare_zap_page: [FAILED TO PARSE] mmu_valid_gen=0x2 gfn=0 role=122884 root_count=1 unsync=0 > + qemu-system-x86 3006 [002] 10562.080502: kvmmmu:kvm_mmu_prepare_zap_page: 0/4 q0 direct --- !pge !nxe root 1 sync > qemu-system-x86 3290 [002] 10708.755312: kvmmmu:fast_page_fault: [FAILED TO PARSE] vcpu_id=0 gva=4094486080 error_code=3 sptep=0xffff88019f1e3670 old_spte=336391285 new_spte=336391287 retry=1 > - insmod 2576 [001] 781.731666: kvmmmu:kvm_mmu_sync_page: [FAILED TO PARSE] mmu_valid_gen=0x1 gfn=2 role=24624 root_count=10 unsync=1 > + insmod 2576 [001] 781.731666: kvmmmu:kvm_mmu_sync_page: 3/0 q0 --- !pge !nxe root 10 unsync > - insmod 2576 [001] 781.731668: kvmmmu:kvm_mmu_unsync_page: [FAILED TO PARSE] mmu_valid_gen=0x1 gfn=2 role=24624 root_count=10 unsync=1 > + insmod 2576 [001] 781.731668: kvmmmu:kvm_mmu_unsync_page: 3/0 q0 --- !pge !nxe root 10 unsync > > Note: > - kvm_mmu_zap_page is replaced by kvm_mmu_prepare_zap_page > in current kernel, keeping it for backward compatibility > - some of the tracepoints keep the same output even with > the plugin handling: kvm:kvm_exit, kvm:kvm_emulate_insn > - the 'kvmmmu:fast_page_fault' is still broken because of > missing is_writable_pte function and is fixed in another patch > - ommited following tracepoints from backport because > the output was buggy > kvm:kvm_nested_vmexit > kvm:kvm_nested_vmexit_inject > > Signed-off-by: Jiri Olsa <jolsa@redhat.com> > Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> > Cc: Frederic Weisbecker <fweisbec@gmail.com> > Cc: Ingo Molnar <mingo@elte.hu> > Cc: Namhyung Kim <namhyung@kernel.org> > Cc: Paul Mackerras <paulus@samba.org> > Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> > Cc: Arnaldo Carvalho de Melo <acme@redhat.com> > Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-- Steve
> Cc: David Ahern <dsahern@gmail.com> > ---
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