Jin Yao c1dfcfad58 perf report: Drop cycles 0 for LBR print ...

For some platforms, for example Broadwell, it doesn't support cycles
for LBR. But the perf always prints cycles:0, it's not necessary.

The patch refactors the LBR info print code and drops the cycles:0.

For example: perf report --branch-history --no-children --stdio

On Broadwell:
--0.91%--__random_r random_r.c:394 (iterations:2)
          __random_r random_r.c:360 (predicted:0.0%)
          __random_r random_r.c:380 (predicted:0.0%)
          __random_r random_r.c:357

On Skylake:
--1.07%--main div.c:39 (predicted:52.4% cycles:1 iterations:17)
          main div.c:44 (predicted:52.4% cycles:1)
          main div.c:42 (cycles:2)
          compute_flag div.c:28 (cycles:2)
          compute_flag div.c:27 (cycles:1)
          rand rand.c:28 (cycles:1)
          rand rand.c:28 (cycles:1)
          __random random.c:298 (cycles:1)
          __random random.c:297 (cycles:1)
          __random random.c:295 (cycles:1)
          __random random.c:295 (cycles:1)
          __random random.c:295 (cycles:1)

Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
	Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1489046786-10061-1-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2017-03-28 16:20:59 -03:00

..

c++

perf clang: Compile BPF script using builtin clang support

2016-12-05 15:51:45 -03:00

include

perf probe: Support probing on offline cross-arch binary

2016-09-01 12:41:09 -03:00

intel-pt-decoder

perf/core improvements and fixes:

2017-03-16 17:29:23 +01:00

libunwind

perf unwind: Fix wrongly used regs for aarch64 unwind

2016-06-23 10:30:31 -03:00

scripting-engines

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-02-28 11:38:18 -08:00

annotate.c

perf annotate: Fix a bug of division by zero when calculating percent

2017-03-27 15:04:56 -03:00

annotate.h

perf annotate: Fix jump target outside of function address range

2016-12-15 16:25:46 -03:00

auxtrace.c

perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

2017-03-27 11:58:08 -03:00

auxtrace.h

perf record: Add support for using symbols in address filters

2016-09-29 11:17:02 -03:00

block-range.c

perf annotate: Add branch stack / basic block

2016-09-08 13:44:03 -03:00

block-range.h

perf annotate: Add branch stack / basic block

2016-09-08 13:44:03 -03:00

bpf-loader.c

perf bpf: Add missing newline in debug messages

2017-02-08 08:55:02 -03:00

bpf-loader.h

perf bpf: Rename bpf__foreach_tev() to bpf__foreach_event()

2016-07-13 23:09:03 -03:00

bpf-prologue.c

perf bpf: Add prologue for BPF programs for fetching arguments

2015-11-18 17:51:04 -03:00

bpf-prologue.h

perf bpf: Add prologue for BPF programs for fetching arguments

2015-11-18 17:51:04 -03:00

Build

perf tools: Remove support for command aliases

2017-03-28 11:19:59 -03:00

build-id.c

perf buildid: Do not assume that readlink() returns a null terminated string

2017-03-27 15:35:06 -03:00

build-id.h

perf probe: Support @BUILDID or @FILE suffix for SDT events

2016-07-13 23:09:08 -03:00

cache.h

perf tools: Remove support for command aliases

2017-03-28 11:19:59 -03:00

call-path.c

perf tools: Refactor code to move call path handling out of thread-stack

2016-05-06 13:00:43 -03:00

call-path.h

perf tools: Refactor code to move call path handling out of thread-stack

2016-05-06 13:00:43 -03:00

callchain.c

perf report: Drop cycles 0 for LBR print

2017-03-28 16:20:59 -03:00

callchain.h

perf report: Enable sorting by srcline as key

2017-03-27 12:13:28 -03:00

cgroup.c

perf cgroup: Convert cgroup_sel.refcnt from atomic_t to refcount_t

2017-03-03 19:07:14 -03:00

cgroup.h

perf cgroup: Convert cgroup_sel.refcnt from atomic_t to refcount_t

2017-03-03 19:07:14 -03:00

cloexec.c

perf tools: Introduce weak alternative to sched_getcpu()

2016-07-12 15:20:34 -03:00

cloexec.h

tools build: Add test for sched_getcpu()

2017-03-03 19:07:19 -03:00

color.c

perf tools: Uninline scnprintf() and vscnprint()

2016-07-12 15:20:24 -03:00

color.h

perf tools: Remove trail argument to color vsprintf

2015-08-05 16:44:02 -03:00

comm.c

perf comm: Convert comm_str.refcnt from atomic_t to refcount_t

2017-03-03 19:07:15 -03:00

comm.h

…

config.c

perf tools: Propagate perf_config() errors

2017-01-27 12:23:33 -03:00

config.h

perf config: Mark where are config items from (user or system)

2016-11-14 13:10:37 -03:00

counts.c

perf stat: Move perf_counts struct and functions into separate object

2015-08-08 14:16:49 -03:00

counts.h

perf stat: Move perf_counts struct and functions into separate object

2015-08-08 14:16:49 -03:00

cpumap.c

perf cpumap: Introduce cpu_map__snprint_mask()

2017-03-03 19:07:17 -03:00

cpumap.h

perf cpumap: Introduce cpu_map__snprint_mask()

2017-03-03 19:07:17 -03:00

cs-etm.h

perf tools: Add coresight etm PMU record capabilities

2016-09-22 12:19:40 -03:00

ctype.c

perf ui/stdio: Align column header for hierarchy output

2016-02-24 20:21:12 -03:00

data-convert-bt.c

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

data-convert-bt.h

perf data ctf: Pass convert options through opts structure

2016-06-28 10:54:55 -03:00

data-convert.h

perf data ctf: Add 'all' option

2016-06-28 10:54:56 -03:00

data.c

tools: Introduce str_error_r()

2016-07-12 15:19:47 -03:00

data.h

perf data: Add perf_data_file__switch() helper

2016-04-14 08:57:54 -03:00

db-export.c

perf thread: Adopt get_main_thread from db-export.c

2016-05-30 12:41:43 -03:00

db-export.h

perf script: Add call path id to exported sample in db export

2016-05-06 13:00:53 -03:00

debug.c

perf utils: Add perf_quiet_option()

2017-02-20 11:16:32 -03:00

debug.h

perf utils: Add perf_quiet_option()

2017-02-20 11:16:32 -03:00

demangle-java.c

perf symbols: add Java demangling support

2016-02-05 09:46:45 -03:00

demangle-java.h

perf symbols: add Java demangling support

2016-02-05 09:46:45 -03:00

demangle-rust.c

perf symbols: Add Rust demangling

2016-07-12 16:12:38 -03:00

demangle-rust.h

perf symbols: Add Rust demangling

2016-07-12 16:12:38 -03:00

drv_configs.c

perf pmu: Push configuration down to PMU driver

2016-09-22 12:19:41 -03:00

drv_configs.h

perf pmu: Push configuration down to PMU driver

2016-09-22 12:19:41 -03:00

dso.c

perf dso: Convert dso.refcnt from atomic_t to refcount_t

2017-03-03 19:07:15 -03:00

dso.h

perf dso: Convert dso.refcnt from atomic_t to refcount_t

2017-03-03 19:07:15 -03:00

dump-insn.c

perf script: Add 'brstackinsn' for branch stacks

2017-03-16 09:24:35 -03:00

dump-insn.h

perf script: Add 'brstackinsn' for branch stacks

2017-03-16 09:24:35 -03:00

dwarf-aux.c

perf probe: Match linkage name with mangled name

2016-09-29 11:17:08 -03:00

dwarf-aux.h

perf probe: Match linkage name with mangled name

2016-09-29 11:17:08 -03:00

dwarf-regs.c

perf probe: Support probing on offline cross-arch binary

2016-09-01 12:41:09 -03:00

env.c

perf tools: Replace _SC_NPROCESSORS_CONF with max_present_cpu in cpu_topology_map

2017-02-17 12:56:35 -03:00

env.h

perf header: Transform nodes string info to struct

2016-07-04 19:39:01 -03:00

event.c

perf tools: Handle partial AUX records and print a warning

2017-03-17 11:52:18 -03:00

event.h

perf tools: Handle partial AUX records and print a warning

2017-03-17 11:52:18 -03:00

evlist.c

perf evlist: Clarify a bit the use of perf_mmap->refcnt

2017-03-03 19:07:16 -03:00

evlist.h

perf evlist: Convert perf_map.refcnt from atomic_t to refcount_t

2017-03-03 19:07:15 -03:00

evsel_fprintf.c

perf symbols: No need to check if sym->name is NULL

2017-02-13 17:22:34 -03:00

evsel.c

perf pmu: Add support for MetricName JSON attribute

2017-03-23 11:42:31 -03:00

evsel.h

perf pmu: Add support for MetricName JSON attribute

2017-03-23 11:42:31 -03:00

expr.h

perf tools: Add a simple expression parser for JSON

2017-03-23 11:39:27 -03:00

expr.y

perf tools: Add a simple expression parser for JSON

2017-03-23 11:39:27 -03:00

find-vdso-map.c

…

genelf_debug.c

perf jit: add source line info support

2016-02-05 12:33:09 -03:00

genelf.c

perf jit: Generate .eh_frame/.eh_frame_hdr in DSO

2016-10-24 11:07:40 -03:00

genelf.h

perf jit: Generate .eh_frame/.eh_frame_hdr in DSO

2016-10-24 11:07:40 -03:00

generate-cmdlist.sh

perf tools: Do not show trace command if it's not compiled in

2016-01-08 12:46:17 -03:00

group.h

perf stat: Basic support for TopDown in perf stat

2016-06-06 17:04:15 -03:00

header.c

perf utils: Readlink /proc/self/exe to find the perf binary

2017-03-27 15:37:54 -03:00

header.h

perf pmu: Use pmu_events table to create aliases

2016-10-03 19:58:00 -03:00

help-unknown-cmd.c

perf tools: Remove support for command aliases

2017-03-28 11:19:59 -03:00

help-unknown-cmd.h

perf tools: Move help_unknown_cmd() to its own file

2015-12-14 12:30:37 -03:00

hist.c

perf report: Show inline stack for browser mode

2017-03-27 12:12:59 -03:00

hist.h

perf tools: Add 'cgroup_id' sort order keyword

2017-03-14 15:17:37 -03:00

intel-bts.c

perf intel-pt/bts: Report instruction bytes and length in sample

2016-10-24 10:31:32 -03:00

intel-bts.h

perf tools: Add Intel BTS support

2015-08-21 11:34:10 -03:00

intel-pt.c

perf tools: Propagate perf_config() errors

2017-01-27 12:23:33 -03:00

intel-pt.h

perf intel-pt: Record address filter in AUXTRACE_INFO event

2016-09-29 11:17:05 -03:00

intlist.c

…

intlist.h

perf intlist: Rename for_each() macros to for_each_entry()

2016-06-23 11:39:19 -03:00

jit.h

perf tools: Remove needless 'extern' from function prototypes

2016-03-23 15:06:35 -03:00

jitdump.c

perf jit: Check JITHEADER_VERSION

2016-10-24 11:07:40 -03:00

jitdump.h

perf jit: Add unwinding support

2016-10-24 11:07:39 -03:00

kvm-stat.h

perf kvm/powerpc: Port perf kvm stat to powerpc

2016-01-29 17:49:54 -03:00

levenshtein.c

perf tools: Remove needless includes from cache.h

2016-07-12 15:19:58 -03:00

levenshtein.h

…

llvm-utils.c

perf tools: Propagate perf_config() errors

2017-01-27 12:23:33 -03:00

llvm-utils.h

perf llvm: Extract helpers in llvm-utils.c

2016-12-05 15:51:42 -03:00

lzma.c

perf tools: Fix error handling of lzma decompression

2016-08-24 11:20:58 -03:00

machine.c

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

machine.h

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

map.c

perf report: Enable sorting by srcline as key

2017-03-27 12:13:28 -03:00

map.h

perf map: Convert map_groups.refcnt from atomic_t to refcount_t

2017-03-03 19:07:15 -03:00

mem-events.c

perf c2c report: Add struct c2c_stats::tot_hitm field

2016-11-23 10:44:05 -03:00

mem-events.h

perf c2c report: Add struct c2c_stats::tot_hitm field

2016-11-23 10:44:05 -03:00

namespaces.c

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

namespaces.h

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

ordered-events.c

perf ordered_events: Introduce reinit()

2016-04-14 08:57:54 -03:00

ordered-events.h

perf ordered_events: Introduce reinit()

2016-04-14 08:57:54 -03:00

parse-branch-options.c

perf tools: Add missing object file to the python binding linkage list

2016-10-28 11:29:45 -02:00

parse-branch-options.h

perf tools: Implement branch_type event parameter

2016-10-24 11:07:35 -03:00

parse-events.c

perf list: Move extra details printing to new option

2017-03-23 11:42:31 -03:00

parse-events.h

perf list: Move extra details printing to new option

2017-03-23 11:42:31 -03:00

parse-events.l

perf jevents: Handle events including .c and .o

2016-10-17 11:24:18 -03:00

parse-events.y

perf pmu: Special case uncore_ prefix

2017-03-21 16:10:59 -03:00

parse-regs-options.c

perf subcmd: Create subcmd library

2015-12-17 14:27:14 -03:00

parse-regs-options.h

perf record: Add ability to name registers to record

2015-08-31 18:01:33 -03:00

path.c

perf tools: Remove needless includes from cache.h

2016-07-12 15:19:58 -03:00

perf_regs.c

perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

2017-03-28 12:25:30 -03:00

perf_regs.h

perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

2017-03-28 12:25:30 -03:00

perf-hooks-list.h

perf tools: Introduce perf hooks

2016-11-29 12:13:27 -03:00

perf-hooks.c

perf tools: Pass context to perf hook functions

2016-12-05 15:51:42 -03:00

perf-hooks.h

perf tools: Pass context to perf hook functions

2016-12-05 15:51:42 -03:00

PERF-VERSION-GEN

…

pmu.c

perf list: Move extra details printing to new option

2017-03-23 11:42:31 -03:00

pmu.h

perf list: Move extra details printing to new option

2017-03-23 11:42:31 -03:00

pmu.l

…

pmu.y

…

probe-event.c

perf probe: Change MAX_CMDLEN

2017-03-21 10:34:59 -03:00

probe-event.h

perf tools: Add missing struct definition in probe_event.h

2016-11-25 11:25:46 -03:00

probe-file.c

perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

2017-03-28 12:25:30 -03:00

probe-file.h

perf kretprobes: Offset from reloc_sym if kernel supports it

2017-03-14 15:17:39 -03:00

probe-finder.c

scripts/spelling.txt: add "an union" pattern and fix typo instances

2017-02-27 18:43:46 -08:00

probe-finder.h

perf probe: Fix to probe on gcc generated functions in modules

2017-01-16 15:43:04 -03:00

pstack.c

perf tools: Introduce pstack_peek()

2015-05-05 18:13:22 -03:00

pstack.h

perf tools: Introduce pstack_peek()

2015-05-05 18:13:22 -03:00

python-ext-sources

perf tools: Add missing object file to the python binding linkage list

2016-10-28 11:29:45 -02:00

python.c

perf tools: Make is_printable_array global

2016-07-18 19:49:47 -03:00

quote.c

perf tools: Normalize sq_quote_argv() error reporting

2016-10-24 11:07:44 -03:00

quote.h

perf quote: Disentangle headers

2016-07-12 15:19:55 -03:00

rb_resort.h

perf rb_resort: Rename for_each() macros to for_each_entry()

2016-06-23 11:35:07 -03:00

rblist.c

…

rblist.h

…

record.c

perf evlist: Rename for_each() macros to for_each_entry()

2016-06-23 11:26:15 -03:00

session.c

perf tools: Handle partial AUX records and print a warning

2017-03-17 11:52:18 -03:00

session.h

perf evsel: Move some methods from session.[ch] to evsel.[ch]

2016-04-13 10:11:52 -03:00

setup.py

perf python: Filter out -specs=/a/b/c from the python binding cc options

2017-02-17 10:31:13 -03:00

sort.c

perf report: Enable sorting by srcline as key

2017-03-27 12:13:28 -03:00

sort.h

perf report: Show inline stack for browser mode

2017-03-27 12:12:59 -03:00

srcline.c

perf report: Enable sorting by srcline as key

2017-03-27 12:13:28 -03:00

stat-shadow.c

perf pmu: Add support for MetricName JSON attribute

2017-03-23 11:42:31 -03:00

stat.c

perf utils: Check verbose flag properly

2017-02-20 11:35:54 -03:00

stat.h

perf stat: Output JSON MetricExpr metric

2017-03-23 11:42:30 -03:00

strbuf.c

perf strbuf: Add missing headers

2016-07-12 15:19:55 -03:00

strbuf.h

perf tools: Experiment with cppcheck

2016-10-03 11:24:13 -03:00

strfilter.c

tools strfilter: Use __fallthrough

2017-02-08 17:31:10 -03:00

strfilter.h

perf tools: Add strfilter__string to recover rules string

2015-05-04 12:43:54 -03:00

string.c

tools string: Use __fallthrough in perf_atoll()

2017-02-08 17:31:01 -03:00

strlist.c

perf tools: Add file_only config option to strlist

2016-01-12 12:42:07 -03:00

strlist.h

perf tools: Rename strlist_for_each() macros to for_each_entry()

2016-06-23 11:35:01 -03:00

svghelper.c

perf timechart: Use NSEC_PER_U?SEC

2016-08-23 15:37:33 -03:00

svghelper.h

perf tools: Remove needless 'extern' from function prototypes

2016-03-23 15:06:35 -03:00

symbol_fprintf.c

perf symbols: No need to check if sym->name is NULL

2017-02-13 17:22:34 -03:00

symbol-elf.c

perf report: Find the inline stack for a given address

2017-03-27 12:00:38 -03:00

symbol-minimal.c

perf report: Find the inline stack for a given address

2017-03-27 12:00:38 -03:00

symbol.c

perf symbols: Fix symbols__fixup_end heuristic for corner cases

2017-03-17 10:30:22 -03:00

symbol.h

perf report: Introduce --inline option

2017-03-27 12:01:46 -03:00

syscalltbl.c

perf tools: Build syscall table .c header from kernel's syscall_64.tbl

2016-04-08 09:58:14 -03:00

syscalltbl.h

perf tools: Allow generating per-arch syscall table arrays

2016-04-08 09:58:14 -03:00

target.c

perf target: str_error_r() always returns the buffer it receives

2016-07-29 11:54:35 -03:00

target.h

…

term.c

perf tools: Move term functions out of util.c

2015-12-09 13:42:02 -03:00

term.h

perf tools: Move term functions out of util.c

2015-12-09 13:42:02 -03:00

thread_map.c

perf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t

2017-03-03 19:07:16 -03:00

thread_map.h

perf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t

2017-03-03 19:07:16 -03:00

thread-stack.c

perf script: Add callindent option

2016-06-23 17:04:26 -03:00

thread-stack.h

perf script: Add callindent option

2016-06-23 17:04:26 -03:00

thread.c

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

thread.h

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

time-utils.c

perf tools: Move parse_nsec_time to time-utils.c

2016-12-01 13:02:39 -03:00

time-utils.h

perf tools: Move parse_nsec_time to time-utils.c

2016-12-01 13:02:39 -03:00

tool.h

perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-14 11:38:23 -03:00

top.c

…

top.h

perf top: Use machine->kptr_restrict_warned

2016-05-20 11:43:55 -03:00

trace-event-info.c

perf tools: Create for_each_event macro for tracepoints iteration

2017-01-31 16:20:08 -03:00

trace-event-parse.c

perf util: Save pid-cmdline mapping into tracing header

2017-01-26 11:42:59 -03:00

trace-event-read.c

perf utils: Null terminate buf in read_ftrace_printk()

2017-03-27 15:37:35 -03:00

trace-event-scripting.c

perf scripting: Don't die if scripting can't be setup, disable it

2016-10-28 11:29:44 -02:00

trace-event.c

perf tools: Introduce trace_event__tp_format_id()

2016-07-12 16:14:52 -03:00

trace-event.h

perf util: Save pid-cmdline mapping into tracing header

2017-01-26 11:42:59 -03:00

trigger.h

perf tools: Introduce trigger class

2016-04-28 09:58:58 -03:00

tsc.c

perf tools: Use 64-bit shifts with (TSC) time conversion

2016-03-08 10:11:18 +01:00

tsc.h

perf jit: Add support for using TSC as a timestamp

2016-04-01 18:42:55 -03:00

unwind-libdw.c

perf unwind: Use addr_location::addr instead of ip for entries

2016-08-16 15:23:29 -03:00

unwind-libdw.h

perf callchain: Add order support for libdw DWARF unwinder

2015-11-23 18:31:13 -03:00

unwind-libunwind-local.c

perf unwind: Fix looking up dwarf unwind stack info

2017-01-18 12:29:52 -03:00

unwind-libunwind.c

perf unwind: Add initialized arg into unwind__prepare_access

2016-07-04 20:27:12 -03:00

unwind.h

perf unwind: Add initialized arg into unwind__prepare_access

2016-07-04 20:27:12 -03:00

usage.c

perf tools: Simplify die() mechanism

2016-03-23 12:32:31 -03:00

util-cxx.h

perf clang: Update test case to use real BPF script

2016-12-05 15:51:44 -03:00

util.c

tools perf util: Make rm_rf(path) argument const

2017-01-31 16:20:07 -03:00

util.h

perf report: Enable sorting by srcline as key

2017-03-27 12:13:28 -03:00

values.c

perf tools: Use normal error reporting when processing PERF_RECORD_READ events

2016-10-24 11:07:44 -03:00

values.h

perf tools: Use normal error reporting when processing PERF_RECORD_READ events

2016-10-24 11:07:44 -03:00

vdso.c

perf tools: Find right DSO taking into account if binary is 32 or 64-bit

2016-06-23 10:25:58 -03:00

vdso.h

perf machine: Fix up vdso methods names

2015-05-29 12:43:44 -03:00

xyarray.c

perf tools: Introduce xyarray__reset function

2015-06-16 10:34:39 -03:00

xyarray.h

perf tools: Introduce xyarray__reset function

2015-06-16 10:34:39 -03:00

zlib.c

…