Commit-ID: 6d65894bc028d0342829ea1e64c9e9efad571124 Gitweb: http://git.kernel.org/tip/6d65894bc028d0342829ea1e64c9e9efad571124 Author: Jiri Olsa <[email protected]> AuthorDate: Tue, 3 Dec 2013 14:09:41 +0100 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Wed, 4 Dec 2013 15:38:14 -0300
tools lib traceevent: Update kvm plugin with is_writable_pte helper Adding is_writable_pte print helper function, so the kvmmmu:fast_page_fault print format gets resolved properly. 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 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 + qemu-system-x86 3290 [002] 10708.755312: kvmmmu:fast_page_fault: vcpu 0 gva f40ce640 error_code P|W sptep 0xffff88019f1e3670 old 0x140cec75 new 140cec77 spurious 0 fixed 1 Signed-off-by: Jiri Olsa <[email protected]> Cc: Corey Ashford <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/lib/traceevent/plugin_kvm.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tools/lib/traceevent/plugin_kvm.c b/tools/lib/traceevent/plugin_kvm.c index be9d9c6..a0e282c 100644 --- a/tools/lib/traceevent/plugin_kvm.c +++ b/tools/lib/traceevent/plugin_kvm.c @@ -389,6 +389,16 @@ static int kvm_mmu_get_page_handler(struct trace_seq *s, return kvm_mmu_print_role(s, record, event, context); } +#define PT_WRITABLE_SHIFT 1 +#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT) + +static unsigned long long +process_is_writable_pte(struct trace_seq *s, unsigned long long *args) +{ + unsigned long pte = args[0]; + return pte & PT_WRITABLE_MASK; +} + int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { init_disassembler(); @@ -415,5 +425,12 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent) pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, NULL); + + pevent_register_print_function(pevent, + process_is_writable_pte, + PEVENT_FUNC_ARG_INT, + "is_writable_pte", + PEVENT_FUNC_ARG_LONG, + PEVENT_FUNC_ARG_VOID); return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
