forked from Minki/linux
perf annotate: Make perf config effective
perf default config set by user in [annotate] section is totally ignored
by annotate code. Fix it.
Before:
$ ./perf config
annotate.hide_src_code=true
annotate.show_nr_jumps=true
annotate.show_nr_samples=true
$ ./perf annotate shash
│ unsigned h = 0;
│ movl $0x0,-0xc(%rbp)
│ while (*s)
│ ↓ jmp 44
│ h = 65599 * h + *s++;
11.33 │24: mov -0xc(%rbp),%eax
43.50 │ imul $0x1003f,%eax,%ecx
│ mov -0x18(%rbp),%rax
After:
│ movl $0x0,-0xc(%rbp)
│ ↓ jmp 44
1 │1 24: mov -0xc(%rbp),%eax
4 │ imul $0x1003f,%eax,%ecx
│ mov -0x18(%rbp),%rax
Note that we have removed show_nr_samples and show_total_period from
annotation_options because they are not used. Instead of them we use
symbol_conf.show_nr_samples and symbol_conf.show_total_period.
Committer testing:
Using 'perf annotate --stdio2' to use the TUI rendering but emitting the output to stdio:
# perf config
#
# perf config annotate.hide_src_code=true
# perf config
annotate.hide_src_code=true
#
# perf config annotate.show_nr_jumps=true
# perf config annotate.show_nr_samples=true
# perf config
annotate.hide_src_code=true
annotate.show_nr_jumps=true
annotate.show_nr_samples=true
#
#
Before:
# perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized
Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
Percent
00000000000609f0 <ObjectInstance::weak_pointer_was_finalized()@@Base>:
endbr64
cmpq $0x0,0x20(%rdi)
↓ je 10
xor %eax,%eax
← retq
xchg %ax,%ax
100.00 10: push %rbp
cmpq $0x0,0x18(%rdi)
mov %rdi,%rbp
↓ jne 20
1b: xor %eax,%eax
pop %rbp
← retq
nop
20: lea 0x18(%rdi),%rdi
→ callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
cmpq $0x0,0x18(%rbp)
↑ jne 1b
mov %rbp,%rdi
→ callq ObjectBase::jsobj_addr() const@plt
mov $0x1,%eax
pop %rbp
← retq
#
After:
# perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null
Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
Samples endbr64
cmpq $0x0,0x20(%rdi)
↓ je 10
xor %eax,%eax
← retq
xchg %ax,%ax
1 1 10: push %rbp
cmpq $0x0,0x18(%rdi)
mov %rdi,%rbp
↓ jne 20
1 1b: xor %eax,%eax
pop %rbp
← retq
nop
1 20: lea 0x18(%rdi),%rdi
→ callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
cmpq $0x0,0x18(%rbp)
↑ jne 1b
mov %rbp,%rdi
→ callq ObjectBase::jsobj_addr() const@plt
mov $0x1,%eax
pop %rbp
← retq
#
# perf config annotate.show_nr_jumps
annotate.show_nr_jumps=true
# perf config annotate.show_nr_jumps=false
# perf config annotate.show_nr_jumps
annotate.show_nr_jumps=false
#
# perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null
Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period]
ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0
Samples endbr64
cmpq $0x0,0x20(%rdi)
↓ je 10
xor %eax,%eax
← retq
xchg %ax,%ax
1 10: push %rbp
cmpq $0x0,0x18(%rdi)
mov %rdi,%rbp
↓ jne 20
1b: xor %eax,%eax
pop %rbp
← retq
nop
20: lea 0x18(%rdi),%rdi
→ callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject*
cmpq $0x0,0x18(%rbp)
↑ jne 1b
mov %rbp,%rdi
→ callq ObjectBase::jsobj_addr() const@plt
mov $0x1,%eax
pop %rbp
← retq
#
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Link: http://lore.kernel.org/lkml/20200213064306.160480-6-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ravi Bangoria
Arnaldo Carvalho de Melo
parent
7b43b69704
commit
7384083ba6
@ -605,7 +605,7 @@ int cmd_annotate(int argc, const char **argv)
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if (ret < 0)
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goto out_delete;
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annotation_config__init();
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annotation_config__init(&annotate.opts);
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symbol_conf.try_vmlinux_path = true;
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@ -1507,7 +1507,7 @@ repeat:
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symbol_conf.priv_size += sizeof(u32);
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symbol_conf.sort_by_name = true;
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}
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annotation_config__init();
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annotation_config__init(&report.annotation_opts);
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}
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if (symbol__init(&session->header.env) < 0)
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@ -1683,7 +1683,7 @@ int cmd_top(int argc, const char **argv)
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if (status < 0)
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goto out_delete_evlist;
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annotation_config__init();
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annotation_config__init(&top.annotation_opts);
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symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
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status = symbol__init(NULL);
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@ -3094,66 +3094,46 @@ out_free_offsets:
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return err;
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}
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#define ANNOTATION__CFG(n) \
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{ .name = #n, .value = &annotation__default_options.n, }
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/*
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* Keep the entries sorted, they are bsearch'ed
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*/
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static struct annotation_config {
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const char *name;
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void *value;
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} annotation__configs[] = {
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ANNOTATION__CFG(hide_src_code),
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ANNOTATION__CFG(jump_arrows),
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ANNOTATION__CFG(offset_level),
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ANNOTATION__CFG(show_linenr),
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ANNOTATION__CFG(show_nr_jumps),
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ANNOTATION__CFG(show_nr_samples),
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ANNOTATION__CFG(show_total_period),
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ANNOTATION__CFG(use_offset),
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};
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#undef ANNOTATION__CFG
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static int annotation_config__cmp(const void *name, const void *cfgp)
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static int annotation__config(const char *var, const char *value, void *data)
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{
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const struct annotation_config *cfg = cfgp;
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return strcmp(name, cfg->name);
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}
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static int annotation__config(const char *var, const char *value,
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void *data __maybe_unused)
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{
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struct annotation_config *cfg;
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const char *name;
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struct annotation_options *opt = data;
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if (!strstarts(var, "annotate."))
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return 0;
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name = var + 9;
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cfg = bsearch(name, annotation__configs, ARRAY_SIZE(annotation__configs),
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sizeof(struct annotation_config), annotation_config__cmp);
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if (!strcmp(var, "annotate.offset_level")) {
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perf_config_u8(&opt->offset_level, "offset_level", value);
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if (cfg == NULL)
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pr_debug("%s variable unknown, ignoring...", var);
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else if (strcmp(var, "annotate.offset_level") == 0) {
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perf_config_int(cfg->value, name, value);
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if (*(int *)cfg->value > ANNOTATION__MAX_OFFSET_LEVEL)
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*(int *)cfg->value = ANNOTATION__MAX_OFFSET_LEVEL;
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else if (*(int *)cfg->value < ANNOTATION__MIN_OFFSET_LEVEL)
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*(int *)cfg->value = ANNOTATION__MIN_OFFSET_LEVEL;
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if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
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opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL;
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else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL)
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opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
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} else if (!strcmp(var, "annotate.hide_src_code")) {
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opt->hide_src_code = perf_config_bool("hide_src_code", value);
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} else if (!strcmp(var, "annotate.jump_arrows")) {
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opt->jump_arrows = perf_config_bool("jump_arrows", value);
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} else if (!strcmp(var, "annotate.show_linenr")) {
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opt->show_linenr = perf_config_bool("show_linenr", value);
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} else if (!strcmp(var, "annotate.show_nr_jumps")) {
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opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value);
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} else if (!strcmp(var, "annotate.show_nr_samples")) {
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symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples",
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value);
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} else if (!strcmp(var, "annotate.show_total_period")) {
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symbol_conf.show_total_period = perf_config_bool("show_total_period",
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value);
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} else if (!strcmp(var, "annotate.use_offset")) {
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opt->use_offset = perf_config_bool("use_offset", value);
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} else {
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*(bool *)cfg->value = perf_config_bool(name, value);
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pr_debug("%s variable unknown, ignoring...", var);
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}
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return 0;
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}
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void annotation_config__init(void)
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void annotation_config__init(struct annotation_options *opt)
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{
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perf_config(annotation__config, NULL);
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perf_config(annotation__config, opt);
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}
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static unsigned int parse_percent_type(char *str1, char *str2)
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@ -83,8 +83,6 @@ struct annotation_options {
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full_path,
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show_linenr,
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show_nr_jumps,
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show_nr_samples,
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show_total_period,
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show_minmax_cycle,
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show_asm_raw,
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annotate_src;
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@ -413,7 +411,7 @@ static inline int symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
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}
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#endif
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void annotation_config__init(void);
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void annotation_config__init(struct annotation_options *opt);
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int annotate_parse_percent_type(const struct option *opt, const char *_str,
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int unset);
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