* [PATCH v1 1/4] perf report: Find the inline stack for a given address
2016-11-29 14:55 [PATCH v1 0/4] perf report: Show inline stack Jin Yao
@ 2016-11-29 14:55 ` Jin Yao
2016-12-06 20:02 ` Arnaldo Carvalho de Melo
2016-11-29 14:55 ` [PATCH v1 2/4] perf report: Create a new option "--inline" Jin Yao
` (3 subsequent siblings)
4 siblings, 1 reply; 7+ messages in thread
From: Jin Yao @ 2016-11-29 14:55 UTC (permalink / raw)
To: acme, jolsa; +Cc: Linux-kernel, ak, kan.liang, yao.jin
It would be useful for perf to support a mode to query the
inline stack for a given callgraph address. This would simplify
finding the right code in code that does a lot of inlining.
The srcline.c has contained the code which supports to translate
the address to filename:line_nr. This patch just extends the
function to let it support getting the inline stacks.
The results (filename:line_nr) would be saved in a list and
returned to the caller.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/util/srcline.c | 206 +++++++++++++++++++++++++++++++++++++++-------
tools/perf/util/util.h | 15 ++++
2 files changed, 193 insertions(+), 28 deletions(-)
diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index b4db3f4..0145625 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -12,6 +12,39 @@
bool srcline_full_filename;
+static const char *dso_name_get(struct dso *dso)
+{
+ const char *dso_name;
+
+ if (dso->symsrc_filename)
+ dso_name = dso->symsrc_filename;
+ else
+ dso_name = dso->long_name;
+
+ if (dso_name[0] == '[')
+ return NULL;
+
+ if (!strncmp(dso_name, "/tmp/perf-", 10))
+ return NULL;
+
+ return dso_name;
+}
+
+static int ilist_apend(char *filename, int line_nr, struct inline_node *node)
+{
+ struct inline_list *ilist;
+
+ ilist = zalloc(sizeof(*ilist));
+ if (ilist == NULL)
+ return -1;
+
+ ilist->filename = filename;
+ ilist->line_nr = line_nr;
+ list_add_tail(&ilist->list, &node->val);
+
+ return 0;
+}
+
#ifdef HAVE_LIBBFD_SUPPORT
/*
@@ -153,7 +186,7 @@ static void addr2line_cleanup(struct a2l_data *a2l)
static int addr2line(const char *dso_name, u64 addr,
char **file, unsigned int *line, struct dso *dso,
- bool unwind_inlines)
+ bool unwind_inlines, struct inline_node *node)
{
int ret = 0;
struct a2l_data *a2l = dso->a2l;
@@ -178,8 +211,14 @@ static int addr2line(const char *dso_name, u64 addr,
while (bfd_find_inliner_info(a2l->abfd, &a2l->filename,
&a2l->funcname, &a2l->line) &&
- cnt++ < MAX_INLINE_NEST)
- ;
+ cnt++ < MAX_INLINE_NEST) {
+
+ if (node != NULL) {
+ if (ilist_apend(strdup(a2l->filename),
+ a2l->line, node) != 0)
+ return 0;
+ }
+ }
}
if (a2l->found && a2l->filename) {
@@ -205,18 +244,68 @@ void dso__free_a2l(struct dso *dso)
dso->a2l = NULL;
}
+static struct inline_node *addr2inlines(const char *dso_name, u64 addr,
+ struct dso *dso)
+{
+ char *file = NULL;
+ unsigned int line = 0;
+ struct inline_node *node;
+
+ node = zalloc(sizeof(*node));
+ if (node == NULL) {
+ perror("not enough memory for the inline node");
+ return NULL;
+ }
+
+ INIT_LIST_HEAD(&node->val);
+ node->addr = addr;
+
+ if (!addr2line(dso_name, addr, &file, &line, dso, TRUE, node)) {
+ free_inline_node(node);
+ return NULL;
+ }
+
+ if (list_empty(&node->val)) {
+ free_inline_node(node);
+ return NULL;
+ }
+
+ return node;
+}
+
#else /* HAVE_LIBBFD_SUPPORT */
+static int filename_split(const char *dso_name, char *filename,
+ unsigned int *line_nr)
+{
+ char *sep;
+
+ sep = strchr(filename, '\n');
+ if (sep)
+ *sep = '\0';
+
+ if (!strcmp(filename, "??:0"))
+ return -1;
+
+ sep = strchr(filename, ':');
+ if (sep) {
+ *sep++ = '\0';
+ *line_nr = strtoul(sep, NULL, 0);
+ }
+
+ return 0;
+}
+
static int addr2line(const char *dso_name, u64 addr,
char **file, unsigned int *line_nr,
struct dso *dso __maybe_unused,
- bool unwind_inlines __maybe_unused)
+ bool unwind_inlines __maybe_unused,
+ struct inline_node *node __maybe_unused)
{
FILE *fp;
char cmd[PATH_MAX];
char *filename = NULL;
size_t len;
- char *sep;
int ret = 0;
scnprintf(cmd, sizeof(cmd), "addr2line -e %s %016"PRIx64,
@@ -233,23 +322,14 @@ static int addr2line(const char *dso_name, u64 addr,
goto out;
}
- sep = strchr(filename, '\n');
- if (sep)
- *sep = '\0';
-
- if (!strcmp(filename, "??:0")) {
- pr_debug("no debugging info in %s\n", dso_name);
+ if (filename_split(dso_name, filename, line_nr) != 0) {
free(filename);
goto out;
}
- sep = strchr(filename, ':');
- if (sep) {
- *sep++ = '\0';
- *file = filename;
- *line_nr = strtoul(sep, NULL, 0);
- ret = 1;
- }
+ *file = filename;
+ ret = 1;
+
out:
pclose(fp);
return ret;
@@ -259,6 +339,57 @@ void dso__free_a2l(struct dso *dso __maybe_unused)
{
}
+static struct inline_node *addr2inlines(const char *dso_name, u64 addr,
+ struct dso *dso __maybe_unused)
+{
+ FILE *fp;
+ char cmd[PATH_MAX];
+ struct inline_node *node;
+ char *filename = NULL;
+ size_t len;
+ unsigned int line_nr = 0;
+
+ scnprintf(cmd, sizeof(cmd), "addr2line -e %s -i %016"PRIx64,
+ dso_name, addr);
+
+ fp = popen(cmd, "r");
+ if (fp == NULL) {
+ pr_warn("popen failed for %s\n", dso_name);
+ return NULL;
+ }
+
+ node = zalloc(sizeof(*node));
+ if (node == NULL) {
+ perror("not enough memory for the inline node");
+ goto out;
+ }
+
+ INIT_LIST_HEAD(&node->val);
+ node->addr = addr;
+
+ while (getline(&filename, &len, fp) != -1) {
+ if (filename_split(dso_name, filename, &line_nr) != 0) {
+ free(filename);
+ goto out;
+ }
+
+ if (ilist_apend(filename, line_nr, node) != 0)
+ goto out;
+
+ filename = NULL;
+ }
+
+out:
+ pclose(fp);
+
+ if (list_empty(&node->val)) {
+ free_inline_node(node);
+ return NULL;
+ }
+
+ return node;
+}
+
#endif /* HAVE_LIBBFD_SUPPORT */
/*
@@ -278,18 +409,11 @@ char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
if (!dso->has_srcline)
goto out;
- if (dso->symsrc_filename)
- dso_name = dso->symsrc_filename;
- else
- dso_name = dso->long_name;
-
- if (dso_name[0] == '[')
- goto out;
-
- if (!strncmp(dso_name, "/tmp/perf-", 10))
+ dso_name = dso_name_get(dso);
+ if (dso_name == NULL)
goto out;
- if (!addr2line(dso_name, addr, &file, &line, dso, unwind_inlines))
+ if (!addr2line(dso_name, addr, &file, &line, dso, unwind_inlines, NULL))
goto out;
if (asprintf(&srcline, "%s:%u",
@@ -329,3 +453,29 @@ char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
{
return __get_srcline(dso, addr, sym, show_sym, false);
}
+
+struct inline_node *get_inline_node(struct dso *dso, u64 addr)
+{
+ const char *dso_name;
+
+ dso_name = dso_name_get(dso);
+ if (dso_name == NULL)
+ return NULL;
+
+ return addr2inlines(dso_name, addr, dso);
+}
+
+void free_inline_node(struct inline_node *node)
+{
+ struct inline_list *ilist, *tmp;
+
+ list_for_each_entry_safe(ilist, tmp, &node->val, list) {
+ list_del(&ilist->list);
+ if (ilist->filename != NULL)
+ free(ilist->filename);
+
+ free(ilist);
+ }
+
+ free(node);
+}
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 79662d6..febe8d7 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -78,6 +78,7 @@
#include <termios.h>
#include <linux/bitops.h>
#include <termios.h>
+#include <linux/list.h>
#include "strlist.h"
extern const char *graph_line;
@@ -365,4 +366,18 @@ int is_printable_array(char *p, unsigned int len);
int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
+struct inline_list {
+ char *filename;
+ unsigned int line_nr;
+ struct list_head list;
+};
+
+struct inline_node {
+ u64 addr;
+ struct list_head val;
+};
+
+struct inline_node *get_inline_node(struct dso *dso, u64 addr);
+void free_inline_node(struct inline_node *node);
+
#endif /* GIT_COMPAT_UTIL_H */
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v1 1/4] perf report: Find the inline stack for a given address
2016-11-29 14:55 ` [PATCH v1 1/4] perf report: Find the inline stack for a given address Jin Yao
@ 2016-12-06 20:02 ` Arnaldo Carvalho de Melo
0 siblings, 0 replies; 7+ messages in thread
From: Arnaldo Carvalho de Melo @ 2016-12-06 20:02 UTC (permalink / raw)
To: Jin Yao; +Cc: jolsa, Linux-kernel, ak, kan.liang
Em Tue, Nov 29, 2016 at 10:55:41PM +0800, Jin Yao escreveu:
> It would be useful for perf to support a mode to query the
> inline stack for a given callgraph address. This would simplify
> finding the right code in code that does a lot of inlining.
>
> The srcline.c has contained the code which supports to translate
> the address to filename:line_nr. This patch just extends the
> function to let it support getting the inline stacks.
>
> The results (filename:line_nr) would be saved in a list and
> returned to the caller.
You're doing multiple things in this changeset, which makes reviewing
harder than it could be, so please consider breaking it in at least:
1. introduce dso_name_get() out of existing code and use it, renaming
it to dso__name(), as "_get()" is usually reserved for refcount
operations (see dso__get(), thread__get(), etc, for instance), just like
with the kernel sources.
2. introduce the inline_list thing and name the functions handling it
using that prefix, and as well separate the method name from the struct
name using __, as done elsewhere in tools/perf/, i.e. that function:
ilist_apend()
should be renamed to:
inline_list__append()
Better, follow the list_head model and instead call it:
inline_list__add_tail()
But as it also allocates space for the node, maybe inline_list__append()
is appropriate :-\
- Arnaldo
> Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
> ---
> tools/perf/util/srcline.c | 206 +++++++++++++++++++++++++++++++++++++++-------
> tools/perf/util/util.h | 15 ++++
> 2 files changed, 193 insertions(+), 28 deletions(-)
>
> diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
> index b4db3f4..0145625 100644
> --- a/tools/perf/util/srcline.c
> +++ b/tools/perf/util/srcline.c
> @@ -12,6 +12,39 @@
>
> bool srcline_full_filename;
>
> +static const char *dso_name_get(struct dso *dso)
> +{
> + const char *dso_name;
> +
> + if (dso->symsrc_filename)
> + dso_name = dso->symsrc_filename;
> + else
> + dso_name = dso->long_name;
> +
> + if (dso_name[0] == '[')
> + return NULL;
> +
> + if (!strncmp(dso_name, "/tmp/perf-", 10))
> + return NULL;
> +
> + return dso_name;
> +}
> +
> +static int ilist_apend(char *filename, int line_nr, struct inline_node *node)
> +{
> + struct inline_list *ilist;
> +
> + ilist = zalloc(sizeof(*ilist));
> + if (ilist == NULL)
> + return -1;
> +
> + ilist->filename = filename;
> + ilist->line_nr = line_nr;
> + list_add_tail(&ilist->list, &node->val);
> +
> + return 0;
> +}
> +
> #ifdef HAVE_LIBBFD_SUPPORT
>
> /*
> @@ -153,7 +186,7 @@ static void addr2line_cleanup(struct a2l_data *a2l)
>
> static int addr2line(const char *dso_name, u64 addr,
> char **file, unsigned int *line, struct dso *dso,
> - bool unwind_inlines)
> + bool unwind_inlines, struct inline_node *node)
> {
> int ret = 0;
> struct a2l_data *a2l = dso->a2l;
> @@ -178,8 +211,14 @@ static int addr2line(const char *dso_name, u64 addr,
>
> while (bfd_find_inliner_info(a2l->abfd, &a2l->filename,
> &a2l->funcname, &a2l->line) &&
> - cnt++ < MAX_INLINE_NEST)
> - ;
> + cnt++ < MAX_INLINE_NEST) {
> +
> + if (node != NULL) {
> + if (ilist_apend(strdup(a2l->filename),
> + a2l->line, node) != 0)
> + return 0;
> + }
> + }
> }
>
> if (a2l->found && a2l->filename) {
> @@ -205,18 +244,68 @@ void dso__free_a2l(struct dso *dso)
> dso->a2l = NULL;
> }
>
> +static struct inline_node *addr2inlines(const char *dso_name, u64 addr,
> + struct dso *dso)
> +{
> + char *file = NULL;
> + unsigned int line = 0;
> + struct inline_node *node;
> +
> + node = zalloc(sizeof(*node));
> + if (node == NULL) {
> + perror("not enough memory for the inline node");
> + return NULL;
> + }
> +
> + INIT_LIST_HEAD(&node->val);
> + node->addr = addr;
> +
> + if (!addr2line(dso_name, addr, &file, &line, dso, TRUE, node)) {
> + free_inline_node(node);
> + return NULL;
> + }
> +
> + if (list_empty(&node->val)) {
> + free_inline_node(node);
> + return NULL;
> + }
> +
> + return node;
Perhaps have:
out_free_inline_node:
inline_node__delete(node);
return NULL;
and jump to here in those two cases above? That after renaming
free_inline_node(node) to inline_node__delete(node) to follow
convention used in most parts of tools/perf/.
> +}
> +
> #else /* HAVE_LIBBFD_SUPPORT */
>
> +static int filename_split(const char *dso_name, char *filename,
> + unsigned int *line_nr)
> +{
> + char *sep;
> +
> + sep = strchr(filename, '\n');
> + if (sep)
> + *sep = '\0';
> +
> + if (!strcmp(filename, "??:0"))
> + return -1;
> +
> + sep = strchr(filename, ':');
> + if (sep) {
> + *sep++ = '\0';
> + *line_nr = strtoul(sep, NULL, 0);
> + }
> +
> + return 0;
> +}
> +
> static int addr2line(const char *dso_name, u64 addr,
> char **file, unsigned int *line_nr,
> struct dso *dso __maybe_unused,
> - bool unwind_inlines __maybe_unused)
> + bool unwind_inlines __maybe_unused,
> + struct inline_node *node __maybe_unused)
> {
> FILE *fp;
> char cmd[PATH_MAX];
> char *filename = NULL;
> size_t len;
> - char *sep;
> int ret = 0;
>
> scnprintf(cmd, sizeof(cmd), "addr2line -e %s %016"PRIx64,
> @@ -233,23 +322,14 @@ static int addr2line(const char *dso_name, u64 addr,
> goto out;
> }
>
> - sep = strchr(filename, '\n');
> - if (sep)
> - *sep = '\0';
> -
> - if (!strcmp(filename, "??:0")) {
> - pr_debug("no debugging info in %s\n", dso_name);
> + if (filename_split(dso_name, filename, line_nr) != 0) {
> free(filename);
> goto out;
> }
>
> - sep = strchr(filename, ':');
> - if (sep) {
> - *sep++ = '\0';
> - *file = filename;
> - *line_nr = strtoul(sep, NULL, 0);
> - ret = 1;
> - }
> + *file = filename;
> + ret = 1;
> +
> out:
> pclose(fp);
> return ret;
> @@ -259,6 +339,57 @@ void dso__free_a2l(struct dso *dso __maybe_unused)
> {
> }
>
> +static struct inline_node *addr2inlines(const char *dso_name, u64 addr,
> + struct dso *dso __maybe_unused)
> +{
> + FILE *fp;
> + char cmd[PATH_MAX];
> + struct inline_node *node;
> + char *filename = NULL;
> + size_t len;
> + unsigned int line_nr = 0;
> +
> + scnprintf(cmd, sizeof(cmd), "addr2line -e %s -i %016"PRIx64,
> + dso_name, addr);
> +
> + fp = popen(cmd, "r");
> + if (fp == NULL) {
> + pr_warn("popen failed for %s\n", dso_name);
> + return NULL;
> + }
> +
> + node = zalloc(sizeof(*node));
> + if (node == NULL) {
> + perror("not enough memory for the inline node");
> + goto out;
> + }
> +
> + INIT_LIST_HEAD(&node->val);
> + node->addr = addr;
> +
> + while (getline(&filename, &len, fp) != -1) {
> + if (filename_split(dso_name, filename, &line_nr) != 0) {
> + free(filename);
> + goto out;
> + }
> +
> + if (ilist_apend(filename, line_nr, node) != 0)
> + goto out;
> +
> + filename = NULL;
> + }
> +
> +out:
> + pclose(fp);
> +
> + if (list_empty(&node->val)) {
> + free_inline_node(node);
> + return NULL;
> + }
> +
> + return node;
> +}
> +
> #endif /* HAVE_LIBBFD_SUPPORT */
>
> /*
> @@ -278,18 +409,11 @@ char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
> if (!dso->has_srcline)
> goto out;
>
> - if (dso->symsrc_filename)
> - dso_name = dso->symsrc_filename;
> - else
> - dso_name = dso->long_name;
> -
> - if (dso_name[0] == '[')
> - goto out;
> -
> - if (!strncmp(dso_name, "/tmp/perf-", 10))
> + dso_name = dso_name_get(dso);
> + if (dso_name == NULL)
> goto out;
>
> - if (!addr2line(dso_name, addr, &file, &line, dso, unwind_inlines))
> + if (!addr2line(dso_name, addr, &file, &line, dso, unwind_inlines, NULL))
> goto out;
>
> if (asprintf(&srcline, "%s:%u",
> @@ -329,3 +453,29 @@ char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
> {
> return __get_srcline(dso, addr, sym, show_sym, false);
> }
> +
> +struct inline_node *get_inline_node(struct dso *dso, u64 addr)
> +{
Please rename this to dso__parse_addr_inlines().
> + const char *dso_name;
> +
> + dso_name = dso_name_get(dso);
> + if (dso_name == NULL)
> + return NULL;
> +
> + return addr2inlines(dso_name, addr, dso);
> +}
> +
> +void free_inline_node(struct inline_node *node)
void inline_node__delete(struct inline_node *node)
> +{
> + struct inline_list *ilist, *tmp;
> +
> + list_for_each_entry_safe(ilist, tmp, &node->val, list) {
> + list_del(&ilist->list);
list_del_init()
> + if (ilist->filename != NULL)
> + free(ilist->filename);
> +
> + free(ilist);
> + }
> +
> + free(node);
> +}
> diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
> index 79662d6..febe8d7 100644
> --- a/tools/perf/util/util.h
> +++ b/tools/perf/util/util.h
> @@ -78,6 +78,7 @@
> #include <termios.h>
> #include <linux/bitops.h>
> #include <termios.h>
> +#include <linux/list.h>
> #include "strlist.h"
>
> extern const char *graph_line;
> @@ -365,4 +366,18 @@ int is_printable_array(char *p, unsigned int len);
>
> int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
>
> +struct inline_list {
> + char *filename;
> + unsigned int line_nr;
> + struct list_head list;
> +};
> +
> +struct inline_node {
> + u64 addr;
> + struct list_head val;
> +};
> +
> +struct inline_node *get_inline_node(struct dso *dso, u64 addr);
> +void free_inline_node(struct inline_node *node);
> +
> #endif /* GIT_COMPAT_UTIL_H */
> --
> 2.7.4
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v1 2/4] perf report: Create a new option "--inline"
2016-11-29 14:55 [PATCH v1 0/4] perf report: Show inline stack Jin Yao
2016-11-29 14:55 ` [PATCH v1 1/4] perf report: Find the inline stack for a given address Jin Yao
@ 2016-11-29 14:55 ` Jin Yao
2016-11-29 14:55 ` [PATCH v1 3/4] perf report: Show inline stack in stdio mode Jin Yao
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Jin Yao @ 2016-11-29 14:55 UTC (permalink / raw)
To: acme, jolsa; +Cc: Linux-kernel, ak, kan.liang, yao.jin
It takes some time to look for inline stack for callgraph addresses.
So it provides a new option "--inline" to let user decide if enable
this feature.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/Documentation/perf-report.txt | 4 ++++
tools/perf/builtin-report.c | 2 ++
tools/perf/util/symbol.h | 3 ++-
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 2d17462..f1299a7 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -412,6 +412,10 @@ include::itrace.txt[]
--hierarchy::
Enable hierarchical output.
+--inline::
+ If a callgraph address belongs to an inlined function, the inline stack
+ will be printed.
+
include::callchain-overhead-calculation.txt[]
SEE ALSO
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 3dfbfff..ba2f627 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -830,6 +830,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
"'always' (default), 'never' or 'auto' only applicable to --stdio mode",
stdio__config_color, "always"),
+ OPT_BOOLEAN(0, "inline", &symbol_conf.show_inline,
+ "Show inline functions"),
OPT_END()
};
struct perf_data_file file = {
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 1bcbefc..c312759 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -118,7 +118,8 @@ struct symbol_conf {
show_ref_callgraph,
hide_unresolved,
raw_trace,
- report_hierarchy;
+ report_hierarchy,
+ show_inline;
const char *vmlinux_name,
*kallsyms_name,
*source_prefix,
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v1 3/4] perf report: Show inline stack in stdio mode
2016-11-29 14:55 [PATCH v1 0/4] perf report: Show inline stack Jin Yao
2016-11-29 14:55 ` [PATCH v1 1/4] perf report: Find the inline stack for a given address Jin Yao
2016-11-29 14:55 ` [PATCH v1 2/4] perf report: Create a new option "--inline" Jin Yao
@ 2016-11-29 14:55 ` Jin Yao
2016-11-29 14:55 ` [PATCH v1 4/4] perf report: Show inline stack in browser mode Jin Yao
2016-12-06 0:35 ` [PATCH v1 0/4] perf report: Show inline stack Jin, Yao
4 siblings, 0 replies; 7+ messages in thread
From: Jin Yao @ 2016-11-29 14:55 UTC (permalink / raw)
To: acme, jolsa; +Cc: Linux-kernel, ak, kan.liang, yao.jin
If the address belongs to an inlined function, the source information
back to the first non-inlined function will be printed.
For example:
0.05% test2 test2 [.] main
|
---/home/jinyao/perf-dev/test/test2.c:27 (inline)
/home/jinyao/perf-dev/test/test2.c:35 (inline)
/home/jinyao/perf-dev/test/test2.c:45 (inline)
/home/jinyao/perf-dev/test/test2.c:61 (inline)
The tag "inline" indicates these items are the entries in inline stack.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/ui/stdio/hist.c | 56 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 55 insertions(+), 1 deletion(-)
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 668f4ae..e74eda0 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -400,6 +400,53 @@ static size_t hist_entry_callchain__fprintf(struct hist_entry *he,
return 0;
}
+static size_t hist_entry_inline__fprintf(struct hist_entry *he,
+ int left_margin,
+ FILE *fp)
+{
+ struct dso *dso;
+ struct inline_node *node;
+ struct inline_list *ilist;
+ int ret = 0, i = 0;
+
+ if (he->ms.map == NULL)
+ return 0;
+
+ dso = he->ms.map->dso;
+ if (dso == NULL)
+ return 0;
+
+ if (dso->kernel != DSO_TYPE_USER)
+ return 0;
+
+ node = get_inline_node(dso, map__rip_2objdump(he->ms.map, he->ip));
+ if (node == NULL)
+ return 0;
+
+ ret += callchain__fprintf_left_margin(fp, left_margin);
+ ret += fprintf(fp, "|\n");
+ ret += callchain__fprintf_left_margin(fp, left_margin);
+ ret += fprintf(fp, "---");
+ left_margin += 3;
+
+ list_for_each_entry(ilist, &node->val, list) {
+ if (ilist->filename != NULL) {
+ if (i++ > 0)
+ ret = callchain__fprintf_left_margin(fp,
+ left_margin);
+ ret += fprintf(fp, "%s:%d (inline)",
+ ilist->filename, ilist->line_nr);
+ ret += fprintf(fp, "\n");
+ }
+ }
+
+ if (i > 0)
+ ret += fprintf(fp, "\n");
+
+ free_inline_node(node);
+ return ret;
+}
+
int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp,
struct perf_hpp_list *hpp_list)
{
@@ -529,6 +576,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
bool use_callchain)
{
int ret;
+ int callchain_ret = 0;
struct perf_hpp hpp = {
.buf = bf,
.size = size,
@@ -547,7 +595,13 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
ret = fprintf(fp, "%s\n", bf);
if (use_callchain)
- ret += hist_entry_callchain__fprintf(he, total_period, 0, fp);
+ callchain_ret = hist_entry_callchain__fprintf(he, total_period,
+ 0, fp);
+
+ if ((callchain_ret == 0) && symbol_conf.show_inline)
+ ret += hist_entry_inline__fprintf(he, 0, fp);
+ else
+ ret += callchain_ret;
return ret;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v1 4/4] perf report: Show inline stack in browser mode
2016-11-29 14:55 [PATCH v1 0/4] perf report: Show inline stack Jin Yao
` (2 preceding siblings ...)
2016-11-29 14:55 ` [PATCH v1 3/4] perf report: Show inline stack in stdio mode Jin Yao
@ 2016-11-29 14:55 ` Jin Yao
2016-12-06 0:35 ` [PATCH v1 0/4] perf report: Show inline stack Jin, Yao
4 siblings, 0 replies; 7+ messages in thread
From: Jin Yao @ 2016-11-29 14:55 UTC (permalink / raw)
To: acme, jolsa; +Cc: Linux-kernel, ak, kan.liang, yao.jin
For example:
- 0.05% test2 test2 [.] main
/home/jinyao/perf-dev/test/test2.c:27 (inline)
/home/jinyao/perf-dev/test/test2.c:35 (inline)
/home/jinyao/perf-dev/test/test2.c:45 (inline)
/home/jinyao/perf-dev/test/test2.c:61 (inline)
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/ui/browsers/hists.c | 98 ++++++++++++++++++++++++++++++++++++++++--
tools/perf/util/hist.c | 5 +++
tools/perf/util/sort.h | 1 +
3 files changed, 100 insertions(+), 4 deletions(-)
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 641b402..c8c3cae 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -362,6 +362,46 @@ static void hist_entry__init_have_children(struct hist_entry *he)
he->init_have_children = true;
}
+static void hist_entry_init_inline_node(struct hist_entry *he)
+{
+ struct dso *dso;
+
+ if (he->inline_node)
+ return;
+
+ if (he->ms.map == NULL)
+ return;
+
+ dso = he->ms.map->dso;
+ if (dso == NULL)
+ return;
+
+ if (dso->kernel != DSO_TYPE_USER)
+ return;
+
+ he->inline_node = get_inline_node(dso,
+ map__rip_2objdump(he->ms.map, he->ip));
+
+ if (he->inline_node == NULL)
+ return;
+
+ he->has_children = true;
+}
+
+static int inline__count_rows(struct hist_entry *he)
+{
+ struct inline_node *node = he->inline_node;
+ struct inline_list *ilist;
+ int i = 0;
+
+ list_for_each_entry(ilist, &node->val, list) {
+ if (ilist->filename != NULL)
+ i++;
+ }
+
+ return i;
+}
+
static bool hist_browser__toggle_fold(struct hist_browser *browser)
{
struct hist_entry *he = browser->he_selection;
@@ -393,7 +433,11 @@ static bool hist_browser__toggle_fold(struct hist_browser *browser)
if (he->unfolded) {
if (he->leaf)
- he->nr_rows = callchain__count_rows(&he->sorted_chain);
+ if (he->inline_node)
+ he->nr_rows = inline__count_rows(he);
+ else
+ he->nr_rows = callchain__count_rows(
+ &he->sorted_chain);
else
he->nr_rows = hierarchy_count_rows(browser, he, false);
@@ -1091,6 +1135,40 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
return printed;
}
+static int hist_browser__show_inline(struct hist_browser *browser,
+ struct hist_entry *entry,
+ unsigned short row)
+{
+ struct inline_node *node;
+ struct inline_list *ilist;
+ char buf[1024];
+ int color, width, first_row;
+
+ first_row = row;
+ node = entry->inline_node;
+ width = browser->b.width - (LEVEL_OFFSET_STEP + 2);
+
+ list_for_each_entry(ilist, &node->val, list) {
+ if (ilist->filename != NULL) {
+ color = HE_COLORSET_NORMAL;
+ if (ui_browser__is_current_entry(&browser->b, row))
+ color = HE_COLORSET_SELECTED;
+
+ scnprintf(buf, sizeof(buf), "%s:%d (inline)",
+ ilist->filename, ilist->line_nr);
+
+ ui_browser__set_color(&browser->b, color);
+ hist_browser__gotorc(browser, row, 0);
+ ui_browser__write_nstring(&browser->b, " ",
+ LEVEL_OFFSET_STEP + 2);
+ ui_browser__write_nstring(&browser->b, buf, width);
+ row++;
+ }
+ }
+
+ return row - first_row;
+}
+
struct hpp_arg {
struct ui_browser *b;
char folded_sign;
@@ -1204,6 +1282,11 @@ static int hist_browser__show_entry(struct hist_browser *browser,
folded_sign = hist_entry__folded(entry);
}
+ if (symbol_conf.show_inline && (!entry->has_children)) {
+ hist_entry_init_inline_node(entry);
+ folded_sign = hist_entry__folded(entry);
+ }
+
if (row_offset == 0) {
struct hpp_arg arg = {
.b = &browser->b,
@@ -1235,7 +1318,8 @@ static int hist_browser__show_entry(struct hist_browser *browser,
}
if (first) {
- if (symbol_conf.use_callchain) {
+ if (symbol_conf.use_callchain ||
+ symbol_conf.show_inline) {
ui_browser__printf(&browser->b, "%c ", folded_sign);
width -= 2;
}
@@ -1277,8 +1361,14 @@ static int hist_browser__show_entry(struct hist_browser *browser,
.is_current_entry = current_entry,
};
- printed += hist_browser__show_callchain(browser, entry, 1, row,
- hist_browser__show_callchain_entry, &arg,
+ if (entry->inline_node)
+ printed += hist_browser__show_inline(browser,
+ entry, row);
+ else
+ printed += hist_browser__show_callchain(browser,
+ entry, 1, row,
+ hist_browser__show_callchain_entry,
+ &arg,
hist_browser__check_output_full);
}
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6770a96..c18af42 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1122,6 +1122,11 @@ void hist_entry__delete(struct hist_entry *he)
zfree(&he->mem_info);
}
+ if (he->inline_node) {
+ free_inline_node(he->inline_node);
+ he->inline_node = NULL;
+ }
+
zfree(&he->stat_acc);
free_srcline(he->srcline);
if (he->srcfile && he->srcfile[0])
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 7aff317..5dbfdc7 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -122,6 +122,7 @@ struct hist_entry {
};
char *srcline;
char *srcfile;
+ struct inline_node *inline_node;
struct symbol *parent;
struct branch_info *branch_info;
struct hists *hists;
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v1 0/4] perf report: Show inline stack
2016-11-29 14:55 [PATCH v1 0/4] perf report: Show inline stack Jin Yao
` (3 preceding siblings ...)
2016-11-29 14:55 ` [PATCH v1 4/4] perf report: Show inline stack in browser mode Jin Yao
@ 2016-12-06 0:35 ` Jin, Yao
4 siblings, 0 replies; 7+ messages in thread
From: Jin, Yao @ 2016-12-06 0:35 UTC (permalink / raw)
To: acme, jolsa; +Cc: Linux-kernel, ak, kan.liang
Any comments on this patch series?
Thanks
Jin Yao
On 11/29/2016 10:55 PM, Jin Yao wrote:
> It would be useful for perf to support a mode to query the
> inline stack for callgraph addresses. This would simplify
> finding the right code in code that does a lot of inlining.
>
> For example, the c code:
>
> static inline void f3(void)
> {
> int i;
> for (i = 0; i < 1000;) {
>
> if(i%2)
> i++;
> else
> i++;
> }
> printf("hello f3\n"); /* D */
> }
>
> /* < CALLCHAIN: f2 <- f1 > */
> static inline void f2(void)
> {
> int i;
> for (i = 0; i < 100; i++) {
> f3(); /* C */
> }
> }
>
> /* < CALLCHAIN: f1 <- main > */
> static inline void f1(void)
> {
> int i;
> for (i = 0; i < 100; i++) {
> f2(); /* B */
> }
> }
>
> /* < CALLCHAIN: main <- TOP > */
> int main()
> {
> struct timeval tv;
> time_t start, end;
>
> gettimeofday(&tv, NULL);
> start = end = tv.tv_sec;
> while((end - start) < 5) {
> f1(); /* A */
> gettimeofday(&tv, NULL);
> end = tv.tv_sec;
> }
> return 0;
> }
>
> The printed inline stack is:
>
> 0.05% test2 test2 [.] main
> |
> ---/home/perf-dev/lck-2867/test/test2.c:27 (inline)
> /home/perf-dev/lck-2867/test/test2.c:35 (inline)
> /home/perf-dev/lck-2867/test/test2.c:45 (inline)
> /home/perf-dev/lck-2867/test/test2.c:61 (inline)
>
> I tag A/B/C/D in above c code to indicate the source line,
> actually the inline stack is equal to:
>
> 0.05% test2 test2 [.] main
> |
> ---D
> C
> B
> A
>
> Jin Yao (4):
> perf report: Find the inline stack for a given address
> perf report: Create a new option "--inline"
> perf report: Show inline stack in stdio mode
> perf report: Show inline stack in browser mode
>
> tools/perf/Documentation/perf-report.txt | 4 +
> tools/perf/builtin-report.c | 2 +
> tools/perf/ui/browsers/hists.c | 98 ++++++++++++++-
> tools/perf/ui/stdio/hist.c | 56 ++++++++-
> tools/perf/util/hist.c | 5 +
> tools/perf/util/sort.h | 1 +
> tools/perf/util/srcline.c | 206 ++++++++++++++++++++++++++-----
> tools/perf/util/symbol.h | 3 +-
> tools/perf/util/util.h | 15 +++
> 9 files changed, 356 insertions(+), 34 deletions(-)
>
^ permalink raw reply [flat|nested] 7+ messages in thread