Messages in this thread Patch in this message | | | From | Ravi Bangoria <> | Subject | [RFC 4/4] perf kvm: Fix output fields instead of 'trace' for perf kvm report on powerpc | Date | Wed, 24 Feb 2016 14:37:45 +0530 |
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commit d49dadea7862 ("perf tools: Make 'trace' or 'trace_fields' sort key default for tracepoint events") makes 'trace' sort key as a default while displaying report for tracepoint.
Because tracepoint(kvm_hv:kvm_guest_exit) is used as a default event, perf kvm report will display output as a list of tracepoint hits and not with a normal report columns.
This patch will replace 'trace' field with 'overhead,comm,dso,sym' while displaying perf kvm report of powerpc.
Before applying patch:
$ ./perf kvm --guestkallsyms=guest.kallsyms --guestmodules=guest.modules report --stdio # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 181K of event 'kvm_hv:kvm_guest_exit' # Event count (approx.): 181061 # # Overhead Trace output # ........ ................................................................................. # 0.02% VCPU 8: trap=HV_DECREMENTER pc=0xc000000000091924 msr=0x8000000000009032, ceded=0 0.00% VCPU 0: trap=HV_DECREMENTER pc=0xc000000000091924 msr=0x8000000000009032, ceded=0 0.00% VCPU 8: trap=HV_DECREMENTER pc=0x10005c7c msr=0x800000000280f032, ceded=0 0.00% VCPU 8: trap=HV_DECREMENTER pc=0x1001ef14 msr=0x800000000280f032, ceded=0 0.00% VCPU 8: trap=HV_DECREMENTER pc=0x3fff83398830 msr=0x800000000280f032, ceded=0 0.00% VCPU 8: trap=HV_DECREMENTER pc=0x3fff833a6fe4 msr=0x800000000280f032, ceded=0 0.00% VCPU 8: trap=HV_DECREMENTER pc=0x3fff833a7a64 msr=0x800000000280f032, ceded=0
After applying patch:
$ ./perf kvm --guestkallsyms=guest.kallsyms --guestmodules=guest.modules report --stdio # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 181K of event 'kvm_hv:kvm_guest_exit' # Event count (approx.): 181061 # # Overhead Command Shared Object Symbol # ........ ....... ....................... .............................. # 0.02% :57276 [guest.kernel.kallsyms] [g] .plpar_hcall_norets 0.00% :57274 [guest.kernel.kallsyms] [g] .plpar_hcall_norets 0.00% :57276 [guest.kernel.kallsyms] [g] .__copy_tofrom_user_power7 0.00% :57276 [guest.kernel.kallsyms] [g] ._atomic_dec_and_lock 0.00% :57276 [guest.kernel.kallsyms] [g] ._raw_spin_lock 0.00% :57276 [guest.kernel.kallsyms] [g] ._switch 0.00% :57276 [guest.kernel.kallsyms] [g] .bio_add_page 0.00% :57276 [guest.kernel.kallsyms] [g] .kmem_cache_alloc
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> --- tools/perf/builtin-report.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 31ec4ba..5d96882 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -930,6 +930,11 @@ repeat: else use_browser = 0; + if (!field_order && + is_perf_data_reorded_on_ppc(session->evlist) && + perf_guest_only()) + field_order = "overhead,comm,dso,sym"; + if (setup_sorting(session->evlist) < 0) { if (sort_order) parse_options_usage(report_usage, options, "s", 1); -- 2.1.4
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