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Subject[PATCH 10/13] perf report: Add -F option to specify output fields
Date
The -F/--fields option is to allow user setup output field in any
order. It can recieve any sort keys and following (hpp) fields:

overhead, overhead_sys, overhead_us, sample and period

If guest profiling is enabled, overhead_guest_{sys,us} will be
available too.

The output fields also affect sort order unless you give -s/--sort
option. And any keys specified on -s option, will also be added to
the output field list automatically.

$ perf report -F sym,sample,overhead
...
# Symbol Samples Overhead
# .......................... ............ ........
#
[.] __cxa_atexit 2 2.50%
[.] __libc_csu_init 4 5.00%
[.] __new_exitfn 3 3.75%
[.] _dl_check_map_versions 1 1.25%
[.] _dl_name_match_p 4 5.00%
[.] _dl_setup_hash 1 1.25%
[.] _dl_sysdep_start 1 1.25%
[.] _init 5 6.25%
[.] _setjmp 6 7.50%
[.] a 8 10.00%
[.] b 8 10.00%
[.] brk 1 1.25%
[.] c 8 10.00%

Note that, the example output above is captured after applying next
patch which fixes sort/comparing behavior.

Requested-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/Documentation/perf-report.txt | 10 ++
tools/perf/builtin-report.c | 8 ++
tools/perf/ui/hist.c | 43 ++++++--
tools/perf/util/hist.h | 5 +
tools/perf/util/sort.c | 180 ++++++++++++++++++++++++++++++-
tools/perf/util/sort.h | 2 +
6 files changed, 238 insertions(+), 10 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 09af66298564..8adbadf34b37 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -98,6 +98,16 @@ OPTIONS
And default sort keys are changed to comm, dso_from, symbol_from, dso_to
and symbol_to, see '--branch-stack'.

+-F::
+--fields=::
+ Specify output field - multiple keys can be specified in CSV format.
+ Following fields are available:
+ overhead, overhead_sys, overhead_us, sample and period.
+ Also it can contain any sort key(s).
+
+ By default, every sort keys not specified in -F will be appended
+ automatically.
+
-p::
--parent=<regex>::
A regex filter to identify parent. The parent is a caller of this
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 90be90491bad..75f63ef0b195 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -780,6 +780,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
" dso_to, dso_from, symbol_to, symbol_from, mispredict,"
" weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
"snoop, locked, abort, in_tx, transaction"),
+ OPT_STRING('F', "fields", &field_order, "key[,keys...]",
+ "output field(s): overhead, period, sample plus all of sort keys"),
OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
"Show sample percentage for different cpu modes"),
OPT_STRING('p', "parent", &parent_pattern, "regex",
@@ -965,6 +967,12 @@ repeat:

sort__setup_elide(stdout);

+ if (setup_output_field() < 0) {
+ parse_options_usage(report_usage, options, "F", 1);
+ goto error;
+ }
+
+
ret = __cmd_report(&report);
if (ret == K_SWITCH_INPUT_DATA) {
perf_session__delete(session);
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index f3e96463550b..809210593f23 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -340,8 +340,6 @@ LIST_HEAD(perf_hpp__sort_list);
#undef __HPP_ENTRY_RAW_FN


-void perf_hpp__setup_output_field(void);
-
void perf_hpp__init(void)
{
struct list_head *list;
@@ -357,6 +355,12 @@ void perf_hpp__init(void)
INIT_LIST_HEAD(&fmt->sort_list);
}

+ /*
+ * If user specified field order, no need to setup default fields.
+ */
+ if (field_order)
+ return;
+
perf_hpp__column_enable(PERF_HPP__OVERHEAD);

if (symbol_conf.show_cpu_utilization) {
@@ -379,8 +383,6 @@ void perf_hpp__init(void)
list = &perf_hpp__format[PERF_HPP__OVERHEAD].sort_list;
if (list_empty(list))
list_add(list, &perf_hpp__sort_list);
-
- perf_hpp__setup_output_field();
}

void perf_hpp__column_register(struct perf_hpp_fmt *format)
@@ -405,8 +407,37 @@ void perf_hpp__setup_output_field(void)

/* append sort keys to output field */
perf_hpp__for_each_sort_list(fmt) {
- if (list_empty(&fmt->list))
- perf_hpp__column_register(fmt);
+ if (!list_empty(&fmt->list))
+ continue;
+
+ /*
+ * sort entry fields are dynamically created,
+ * so they can share a same sort key even though
+ * the list is empty.
+ */
+ if (perf_hpp__is_sort_entry(fmt)) {
+ struct perf_hpp_fmt *pos;
+
+ perf_hpp__for_each_format(pos) {
+ if (perf_hpp__same_sort_entry(pos, fmt))
+ goto next;
+ }
+ }
+
+ perf_hpp__column_register(fmt);
+next:
+ ;
+ }
+}
+
+void perf_hpp__append_sort_keys(void)
+{
+ struct perf_hpp_fmt *fmt;
+
+ /* append sort keys to output field */
+ perf_hpp__for_each_format(fmt) {
+ if (list_empty(&fmt->sort_list))
+ perf_hpp__register_sort_field(fmt);
}
}

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 4f70fb490a63..4c5c2837a27d 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -189,6 +189,11 @@ void perf_hpp__init(void);
void perf_hpp__column_register(struct perf_hpp_fmt *format);
void perf_hpp__column_enable(unsigned col);
void perf_hpp__register_sort_field(struct perf_hpp_fmt *format);
+void perf_hpp__setup_output_field(void);
+void perf_hpp__append_sort_keys(void);
+
+bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
+bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);

typedef u64 (*hpp_field_fn)(struct hist_entry *he);
typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 2f83965ab2c0..639dd49f2884 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -12,6 +12,7 @@ const char default_branch_sort_order[] = "comm,dso_from,symbol_from,dso_to,symbo
const char default_mem_sort_order[] = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
const char default_top_sort_order[] = "dso,symbol";
const char *sort_order;
+const char *field_order;
regex_t ignore_callees_regex;
int have_ignore_callees = 0;
int sort__need_collapse = 0;
@@ -1056,6 +1057,20 @@ struct hpp_sort_entry {
struct sort_entry *se;
};

+bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
+{
+ struct hpp_sort_entry *hse_a;
+ struct hpp_sort_entry *hse_b;
+
+ if (!perf_hpp__is_sort_entry(a) || !perf_hpp__is_sort_entry(b))
+ return false;
+
+ hse_a = container_of(a, struct hpp_sort_entry, hpp);
+ hse_b = container_of(b, struct hpp_sort_entry, hpp);
+
+ return hse_a->se == hse_b->se;
+}
+
static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
struct perf_evsel *evsel)
{
@@ -1091,14 +1106,15 @@ static int __sort__hpp_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
return hse->se->se_snprintf(he, hpp->buf, hpp->size, len);
}

-static int __sort_dimension__add_hpp(struct sort_dimension *sd)
+static struct hpp_sort_entry *
+__sort_dimension__alloc_hpp(struct sort_dimension *sd)
{
struct hpp_sort_entry *hse;

hse = malloc(sizeof(*hse));
if (hse == NULL) {
pr_err("Memory allocation failed\n");
- return -1;
+ return NULL;
}

hse->se = sd->entry;
@@ -1114,16 +1130,42 @@ static int __sort_dimension__add_hpp(struct sort_dimension *sd)
INIT_LIST_HEAD(&hse->hpp.list);
INIT_LIST_HEAD(&hse->hpp.sort_list);

+ return hse;
+}
+
+bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format)
+{
+ return format->header == __sort__hpp_header;
+}
+
+static int __sort_dimension__add_hpp_sort(struct sort_dimension *sd)
+{
+ struct hpp_sort_entry *hse = __sort_dimension__alloc_hpp(sd);
+
+ if (hse == NULL)
+ return -1;
+
perf_hpp__register_sort_field(&hse->hpp);
return 0;
}

+static int __sort_dimension__add_hpp_output(struct sort_dimension *sd)
+{
+ struct hpp_sort_entry *hse = __sort_dimension__alloc_hpp(sd);
+
+ if (hse == NULL)
+ return -1;
+
+ perf_hpp__column_register(&hse->hpp);
+ return 0;
+}
+
static int __sort_dimension__add(struct sort_dimension *sd, enum sort_type idx)
{
if (sd->taken)
return 0;

- if (__sort_dimension__add_hpp(sd) < 0)
+ if (__sort_dimension__add_hpp_sort(sd) < 0)
return -1;

if (sd->entry->se_collapse)
@@ -1148,6 +1190,28 @@ static int __hpp_dimension__add(struct hpp_dimension *hd)
return 0;
}

+static int __sort_dimension__add_output(struct sort_dimension *sd)
+{
+ if (sd->taken)
+ return 0;
+
+ if (__sort_dimension__add_hpp_output(sd) < 0)
+ return -1;
+
+ sd->taken = 1;
+ return 0;
+}
+
+static int __hpp_dimension__add_output(struct hpp_dimension *hd)
+{
+ if (!hd->taken) {
+ hd->taken = 1;
+
+ perf_hpp__column_register(hd->fmt);
+ }
+ return 0;
+}
+
int sort_dimension__add(const char *tok)
{
unsigned int i;
@@ -1240,8 +1304,17 @@ int setup_sorting(void)
char *tmp, *tok, *str;
int ret = 0;

- if (sort_order == NULL)
+ if (sort_order == NULL) {
+ if (field_order) {
+ /*
+ * If user specified field order but no sort order,
+ * we'll honor it and not add default sort orders.
+ */
+ return 0;
+ }
+
sort_order = get_default_sort_order();
+ }

str = strdup(sort_order);
if (str == NULL) {
@@ -1328,3 +1401,102 @@ void sort__setup_elide(FILE *output)
list_for_each_entry(se, &hist_entry__sort_list, list)
se->elide = false;
}
+
+static int output_field_add(char *tok)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(common_sort_dimensions); i++) {
+ struct sort_dimension *sd = &common_sort_dimensions[i];
+
+ if (strncasecmp(tok, sd->name, strlen(tok)))
+ continue;
+
+ return __sort_dimension__add_output(sd);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(hpp_sort_dimensions); i++) {
+ struct hpp_dimension *hd = &hpp_sort_dimensions[i];
+
+ if (strncasecmp(tok, hd->name, strlen(tok)))
+ continue;
+
+ return __hpp_dimension__add_output(hd);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++) {
+ struct sort_dimension *sd = &bstack_sort_dimensions[i];
+
+ if (strncasecmp(tok, sd->name, strlen(tok)))
+ continue;
+
+ return __sort_dimension__add_output(sd);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(memory_sort_dimensions); i++) {
+ struct sort_dimension *sd = &memory_sort_dimensions[i];
+
+ if (strncasecmp(tok, sd->name, strlen(tok)))
+ continue;
+
+ return __sort_dimension__add_output(sd);
+ }
+
+ return -ESRCH;
+}
+
+static void reset_dimensions(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(common_sort_dimensions); i++)
+ common_sort_dimensions[i].taken = 0;
+
+ for (i = 0; i < ARRAY_SIZE(hpp_sort_dimensions); i++)
+ hpp_sort_dimensions[i].taken = 0;
+
+ for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++)
+ bstack_sort_dimensions[i].taken = 0;
+
+ for (i = 0; i < ARRAY_SIZE(memory_sort_dimensions); i++)
+ memory_sort_dimensions[i].taken = 0;
+}
+
+int setup_output_field(void)
+{
+ char *tmp, *tok, *str;
+ int ret = 0;
+
+ if (field_order == NULL)
+ goto out;
+
+ reset_dimensions();
+
+ str = strdup(field_order);
+ if (str == NULL) {
+ error("Not enough memory to setup output fields");
+ return -ENOMEM;
+ }
+
+ for (tok = strtok_r(str, ", ", &tmp);
+ tok; tok = strtok_r(NULL, ", ", &tmp)) {
+ ret = output_field_add(tok);
+ if (ret == -EINVAL) {
+ error("Invalid --fields key: `%s'", tok);
+ break;
+ } else if (ret == -ESRCH) {
+ error("Unknown --fields key: `%s'", tok);
+ break;
+ }
+ }
+
+ free(str);
+
+out:
+ /* copy sort keys to output fields */
+ perf_hpp__setup_output_field();
+ /* and then copy output fields to sort keys */
+ perf_hpp__append_sort_keys();
+
+ return ret;
+}
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 35b53cc56feb..02706c9766d6 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -25,6 +25,7 @@

extern regex_t parent_regex;
extern const char *sort_order;
+extern const char *field_order;
extern const char default_parent_pattern[];
extern const char *parent_pattern;
extern const char default_sort_order[];
@@ -190,6 +191,7 @@ extern struct sort_entry sort_thread;
extern struct list_head hist_entry__sort_list;

int setup_sorting(void);
+int setup_output_field(void);
extern int sort_dimension__add(const char *);
void sort__setup_elide(FILE *fp);

--
1.7.11.7


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