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-rw-r--r--tools/perf/Documentation/perf-report.txt5
-rw-r--r--tools/perf/Documentation/perf-top.txt5
-rw-r--r--tools/perf/builtin-report.c27
-rw-r--r--tools/perf/builtin-top.c6
-rw-r--r--tools/perf/util/machine.c24
-rw-r--r--tools/perf/util/machine.h4
-rw-r--r--tools/perf/util/session.c3
-rw-r--r--tools/perf/util/sort.c2
-rw-r--r--tools/perf/util/sort.h4
9 files changed, 63 insertions, 17 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 66dab7410c1d..747ff50284b7 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -135,6 +135,11 @@ OPTIONS
--inverted::
alias for inverted caller based call graph.
+--ignore-callees=<regex>::
+ Ignore callees of the function(s) matching the given regex.
+ This has the effect of collecting the callers of each such
+ function into one place in the call-graph tree.
+
--pretty=<key>::
Pretty printing style. key: normal, raw
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 7fdd1909e376..58d6598a9686 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -155,6 +155,11 @@ Default is to monitor all CPUS.
Default: fractal,0.5,callee.
+--ignore-callees=<regex>::
+ Ignore callees of the function(s) matching the given regex.
+ This has the effect of collecting the callers of each such
+ function into one place in the call-graph tree.
+
--percent-limit::
Do not show entries which have an overhead under that percent.
(Default: 0).
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ee2ca3eb22df..9a7e54d701cf 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -89,7 +89,7 @@ static int perf_report__add_mem_hist_entry(struct perf_tool *tool,
if ((sort__has_parent || symbol_conf.use_callchain) &&
sample->callchain) {
err = machine__resolve_callchain(machine, evsel, al->thread,
- sample, &parent);
+ sample, &parent, al);
if (err)
return err;
}
@@ -180,7 +180,7 @@ static int perf_report__add_branch_hist_entry(struct perf_tool *tool,
if ((sort__has_parent || symbol_conf.use_callchain)
&& sample->callchain) {
err = machine__resolve_callchain(machine, evsel, al->thread,
- sample, &parent);
+ sample, &parent, al);
if (err)
return err;
}
@@ -254,7 +254,7 @@ static int perf_evsel__add_hist_entry(struct perf_evsel *evsel,
if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
err = machine__resolve_callchain(machine, evsel, al->thread,
- sample, &parent);
+ sample, &parent, al);
if (err)
return err;
}
@@ -681,6 +681,24 @@ setup:
return 0;
}
+int
+report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
+ const char *arg, int unset __maybe_unused)
+{
+ if (arg) {
+ int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
+ if (err) {
+ char buf[BUFSIZ];
+ regerror(err, &ignore_callees_regex, buf, sizeof(buf));
+ pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
+ return -1;
+ }
+ have_ignore_callees = 1;
+ }
+
+ return 0;
+}
+
static int
parse_branch_mode(const struct option *opt __maybe_unused,
const char *str __maybe_unused, int unset)
@@ -771,6 +789,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
"Default: fractal,0.5,callee", &parse_callchain_opt, callchain_default_opt),
OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
"alias for inverted call graph"),
+ OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
+ "ignore callees of these functions in call graphs",
+ report_parse_ignore_callees_opt),
OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
"only consider symbols in these dsos"),
OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a237059f51cf..bbf463572777 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -773,8 +773,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
sample->callchain) {
err = machine__resolve_callchain(machine, evsel,
al.thread, sample,
- &parent);
-
+ &parent, &al);
if (err)
return;
}
@@ -1109,6 +1108,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_CALLBACK_DEFAULT('G', "call-graph", &top.record_opts,
"mode[,dump_size]", record_callchain_help,
&parse_callchain_opt, "fp"),
+ OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
+ "ignore callees of these functions in call graphs",
+ report_parse_ignore_callees_opt),
OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
"Show a column with the sum of periods"),
OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 5dd5026a82ef..f9f9d6381b9a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1058,11 +1058,10 @@ int machine__process_event(struct machine *machine, union perf_event *event)
return ret;
}
-static bool symbol__match_parent_regex(struct symbol *sym)
+static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
{
- if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
+ if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
return 1;
-
return 0;
}
@@ -1159,8 +1158,8 @@ struct branch_info *machine__resolve_bstack(struct machine *machine,
static int machine__resolve_callchain_sample(struct machine *machine,
struct thread *thread,
struct ip_callchain *chain,
- struct symbol **parent)
-
+ struct symbol **parent,
+ struct addr_location *root_al)
{
u8 cpumode = PERF_RECORD_MISC_USER;
unsigned int i;
@@ -1211,8 +1210,15 @@ static int machine__resolve_callchain_sample(struct machine *machine,
MAP__FUNCTION, ip, &al, NULL);
if (al.sym != NULL) {
if (sort__has_parent && !*parent &&
- symbol__match_parent_regex(al.sym))
+ symbol__match_regex(al.sym, &parent_regex))
*parent = al.sym;
+ else if (have_ignore_callees && root_al &&
+ symbol__match_regex(al.sym, &ignore_callees_regex)) {
+ /* Treat this symbol as the root,
+ forgetting its callees. */
+ *root_al = al;
+ callchain_cursor_reset(&callchain_cursor);
+ }
if (!symbol_conf.use_callchain)
break;
}
@@ -1237,13 +1243,13 @@ int machine__resolve_callchain(struct machine *machine,
struct perf_evsel *evsel,
struct thread *thread,
struct perf_sample *sample,
- struct symbol **parent)
-
+ struct symbol **parent,
+ struct addr_location *root_al)
{
int ret;
ret = machine__resolve_callchain_sample(machine, thread,
- sample->callchain, parent);
+ sample->callchain, parent, root_al);
if (ret)
return ret;
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index e49ba01b7937..5bb6244194d5 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -5,6 +5,7 @@
#include <linux/rbtree.h>
#include "map.h"
+struct addr_location;
struct branch_stack;
struct perf_evsel;
struct perf_sample;
@@ -83,7 +84,8 @@ int machine__resolve_callchain(struct machine *machine,
struct perf_evsel *evsel,
struct thread *thread,
struct perf_sample *sample,
- struct symbol **parent);
+ struct symbol **parent,
+ struct addr_location *root_al);
/*
* Default guest kernel is defined by parameter --guestkallsyms
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 951a1cfb317c..1eb58eedcac1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1406,9 +1406,8 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
if (symbol_conf.use_callchain && sample->callchain) {
-
if (machine__resolve_callchain(machine, evsel, al.thread,
- sample, NULL) != 0) {
+ sample, NULL, NULL) != 0) {
if (verbose)
error("Failed to resolve callchain. Skipping\n");
return;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 8deee19d2e7f..cb2b108635ee 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -7,6 +7,8 @@ const char default_parent_pattern[] = "^sys_|^do_page_fault";
const char *parent_pattern = default_parent_pattern;
const char default_sort_order[] = "comm,dso,symbol";
const char *sort_order = default_sort_order;
+regex_t ignore_callees_regex;
+int have_ignore_callees = 0;
int sort__need_collapse = 0;
int sort__has_parent = 0;
int sort__has_sym = 0;
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 45ac84c1e037..a4a6d0b1ea0e 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -29,6 +29,8 @@ extern const char *sort_order;
extern const char default_parent_pattern[];
extern const char *parent_pattern;
extern const char default_sort_order[];
+extern regex_t ignore_callees_regex;
+extern int have_ignore_callees;
extern int sort__need_collapse;
extern int sort__has_parent;
extern int sort__has_sym;
@@ -183,4 +185,6 @@ int setup_sorting(void);
extern int sort_dimension__add(const char *);
void sort__setup_elide(FILE *fp);
+int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset);
+
#endif /* __PERF_SORT_H */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-27 01:13:34 +0200