* [tip:perf/core] perf evsel: Require that callchains be resolved before calling fprintf_{sym,callchain}
@ 2016-04-16 9:17 tip-bot for Arnaldo Carvalho de Melo
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From: tip-bot for Arnaldo Carvalho de Melo @ 2016-04-16 9:17 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, namhyung, mingo, jolsa, tglx, hpa, acme, dsahern,
wangnan0, adrian.hunter
Commit-ID: 6f736735e30f51805f6be31d20a4bf5b0ae91bae
Gitweb: http://git.kernel.org/tip/6f736735e30f51805f6be31d20a4bf5b0ae91bae
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Thu, 14 Apr 2016 17:45:51 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 14 Apr 2016 19:46:56 -0300
perf evsel: Require that callchains be resolved before calling fprintf_{sym,callchain}
This way the print routine merely does printing, not requiring access to
the resolving machinery, which helps disentangling the object files and
easing creating subsets with a limited functionality set.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2ti2jbra8fypdfawwwm3aee3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-script.c | 36 ++++++++++++++++++++----------------
tools/perf/builtin-trace.c | 8 +++++---
tools/perf/util/evsel.c | 39 ++++++++++++++-------------------------
tools/perf/util/evsel.h | 19 +++++++++----------
4 files changed, 48 insertions(+), 54 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 717ba02..875d84e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -569,19 +569,23 @@ static void print_sample_bts(struct perf_sample *sample,
/* print branch_from information */
if (PRINT_FIELD(IP)) {
unsigned int print_opts = output[attr->type].print_ip_opts;
+ struct callchain_cursor *cursor = NULL, cursor_callchain;
- if (symbol_conf.use_callchain && sample->callchain) {
- printf("\n");
- } else {
- printf(" ");
+ if (symbol_conf.use_callchain && sample->callchain &&
+ thread__resolve_callchain(al->thread, &cursor_callchain, evsel,
+ sample, NULL, NULL, scripting_max_stack) == 0)
+ cursor = &cursor_callchain;
+
+ if (cursor == NULL) {
+ putchar(' ');
if (print_opts & EVSEL__PRINT_SRCLINE) {
print_srcline_last = true;
print_opts &= ~EVSEL__PRINT_SRCLINE;
}
- }
- perf_evsel__fprintf_sym(evsel, sample, al, 0, print_opts,
- symbol_conf.use_callchain,
- scripting_max_stack, stdout);
+ } else
+ putchar('\n');
+
+ sample__fprintf_sym(sample, al, 0, print_opts, cursor, stdout);
}
/* print branch_to information */
@@ -784,15 +788,15 @@ static void process_event(struct perf_script *script,
printf("%16" PRIu64, sample->weight);
if (PRINT_FIELD(IP)) {
- if (!symbol_conf.use_callchain)
- printf(" ");
- else
- printf("\n");
+ struct callchain_cursor *cursor = NULL, cursor_callchain;
+
+ if (symbol_conf.use_callchain &&
+ thread__resolve_callchain(al->thread, &cursor_callchain, evsel,
+ sample, NULL, NULL, scripting_max_stack) == 0)
+ cursor = &cursor_callchain;
- perf_evsel__fprintf_sym(evsel, sample, al, 0,
- output[attr->type].print_ip_opts,
- symbol_conf.use_callchain,
- scripting_max_stack, stdout);
+ putchar(cursor ? '\n' : ' ');
+ sample__fprintf_sym(sample, al, 0, output[attr->type].print_ip_opts, cursor, stdout);
}
if (PRINT_FIELD(IREGS))
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index e5f0cc1..0e2a82b 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1890,14 +1890,16 @@ static int trace__fprintf_callchain(struct trace *trace, struct perf_evsel *evse
if (sample->callchain == NULL)
return 0;
- if (machine__resolve(trace->host, &al, sample) < 0) {
+ if (machine__resolve(trace->host, &al, sample) < 0 ||
+ thread__resolve_callchain(al.thread, &callchain_cursor, evsel,
+ sample, NULL, NULL, scripting_max_stack)) {
pr_err("Problem processing %s callchain, skipping...\n",
perf_evsel__name(evsel));
return 0;
}
- return perf_evsel__fprintf_callchain(evsel, sample, &al, 38, print_opts,
- scripting_max_stack, trace->output);
+ return sample__fprintf_callchain(sample, &al, 38, print_opts,
+ &callchain_cursor, trace->output);
}
static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 60bba67..35c5a52 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2343,13 +2343,12 @@ out:
return ++printed;
}
-int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample *sample,
- struct addr_location *al, int left_alignment,
- unsigned int print_opts, unsigned int stack_depth,
- FILE *fp)
+int sample__fprintf_callchain(struct perf_sample *sample,
+ struct addr_location *al, int left_alignment,
+ unsigned int print_opts, struct callchain_cursor *cursor,
+ FILE *fp)
{
int printed = 0;
- struct callchain_cursor cursor;
struct callchain_cursor_node *node;
int print_ip = print_opts & EVSEL__PRINT_IP;
int print_sym = print_opts & EVSEL__PRINT_SYM;
@@ -2363,22 +2362,15 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample *
if (sample->callchain) {
struct addr_location node_al;
- if (thread__resolve_callchain(al->thread, &cursor, evsel,
- sample, NULL, NULL,
- stack_depth) != 0) {
- if (verbose)
- error("Failed to resolve callchain. Skipping\n");
- return printed;
- }
- callchain_cursor_commit(&cursor);
+ callchain_cursor_commit(cursor);
if (print_symoffset)
node_al = *al;
- while (stack_depth) {
+ while (1) {
u64 addr = 0;
- node = callchain_cursor_current(&cursor);
+ node = callchain_cursor_current(cursor);
if (!node)
break;
@@ -2418,20 +2410,17 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample *
if (!print_oneline)
printed += fprintf(fp, "\n");
-
- stack_depth--;
next:
- callchain_cursor_advance(&cursor);
+ callchain_cursor_advance(cursor);
}
}
return printed;
}
-int perf_evsel__fprintf_sym(struct perf_evsel *evsel, struct perf_sample *sample,
- struct addr_location *al, int left_alignment,
- unsigned int print_opts, bool print_callchain,
- unsigned int stack_depth, FILE *fp)
+int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
+ int left_alignment, unsigned int print_opts,
+ struct callchain_cursor *cursor, FILE *fp)
{
int printed = 0;
int print_ip = print_opts & EVSEL__PRINT_IP;
@@ -2441,9 +2430,9 @@ int perf_evsel__fprintf_sym(struct perf_evsel *evsel, struct perf_sample *sample
int print_srcline = print_opts & EVSEL__PRINT_SRCLINE;
int print_unknown_as_addr = print_opts & EVSEL__PRINT_UNKNOWN_AS_ADDR;
- if (print_callchain && sample->callchain) {
- printed += perf_evsel__fprintf_callchain(evsel, sample, al, left_alignment,
- print_opts, stack_depth, fp);
+ if (cursor != NULL) {
+ printed += sample__fprintf_callchain(sample, al, left_alignment,
+ print_opts, cursor, fp);
} else if (!(al->sym && al->sym->ignore)) {
printed += fprintf(fp, "%-*.*s", left_alignment, left_alignment, " ");
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 013f361..abadfea 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -395,16 +395,15 @@ int perf_evsel__fprintf(struct perf_evsel *evsel,
#define EVSEL__PRINT_SRCLINE (1<<5)
#define EVSEL__PRINT_UNKNOWN_AS_ADDR (1<<6)
-int perf_evsel__fprintf_callchain(struct perf_evsel *evsel,
- struct perf_sample *sample,
- struct addr_location *al, int left_alignment,
- unsigned int print_opts,
- unsigned int stack_depth, FILE *fp);
-
-int perf_evsel__fprintf_sym(struct perf_evsel *evsel, struct perf_sample *sample,
- struct addr_location *al, int left_alignment,
- unsigned int print_opts, bool print_callchain,
- unsigned int stack_depth, FILE *fp);
+struct callchain_cursor;
+
+int sample__fprintf_callchain(struct perf_sample *sample, struct addr_location *al,
+ int left_alignment, unsigned int print_opts,
+ struct callchain_cursor *cursor, FILE *fp);
+
+int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
+ int left_alignment, unsigned int print_opts,
+ struct callchain_cursor *cursor, FILE *fp);
bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
char *msg, size_t msgsize);
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