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Message-Id: <20230328235543.1082207-7-irogers@google.com>
Date: Tue, 28 Mar 2023 16:55:43 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Tom Rix <trix@...hat.com>, James Clark <james.clark@....com>,
Andi Kleen <ak@...ux.intel.com>,
Kan Liang <kan.liang@...ux.intel.com>,
German Gomez <german.gomez@....com>,
Sandipan Das <sandipan.das@....com>,
Andres Freund <andres@...razel.de>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
llvm@...ts.linux.dev
Subject: [PATCH v1 6/6] perf symbol: Add command line support for addr2line path
Allow addr2line to be set either on the command line or via the
perfconfig file. This doesn't currently work with llvm-addr2line as
the addr2line code emits two things:
1) the address to decode,
2) a bogus ',' value.
The expectation is the bogus value will generate:
??
??:0
that terminates the addr2line reading. However, the output from
llvm-addr2line is a single line with just the input ',' locking up the
addr2line reading that is expecting a second line.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/Documentation/perf-annotate.txt | 3 +++
tools/perf/Documentation/perf-config.txt | 3 +++
tools/perf/Documentation/perf-report.txt | 3 +++
tools/perf/Documentation/perf-top.txt | 6 +++++
tools/perf/builtin-annotate.c | 9 +++++++-
tools/perf/builtin-report.c | 9 +++++++-
tools/perf/builtin-top.c | 10 +++++++--
tools/perf/util/annotate.c | 6 +++++
tools/perf/util/srcline.c | 26 +++++++++++++---------
tools/perf/util/symbol_conf.h | 1 +
10 files changed, 62 insertions(+), 14 deletions(-)
diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
index 980fe2c29275..fe168e8165c8 100644
--- a/tools/perf/Documentation/perf-annotate.txt
+++ b/tools/perf/Documentation/perf-annotate.txt
@@ -116,6 +116,9 @@ include::itrace.txt[]
-M::
--disassembler-style=:: Set disassembler style for objdump.
+--addr2line=<path>::
+ Path to addr2line binary.
+
--objdump=<path>::
Path to objdump binary.
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 697f7f924545..e56ae54805a8 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -250,6 +250,9 @@ annotate.*::
These are in control of addresses, jump function, source code
in lines of assembly code from a specific program.
+ annotate.addr2line::
+ addr2line binary to use for file names and line numbers.
+
annotate.objdump::
objdump binary to use for disassembly and annotations.
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index cfd502f7e6da..af068b4f1e5a 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -381,6 +381,9 @@ OPTIONS
This allows to examine the path the program took to each sample.
The data collection must have used -b (or -j) and -g.
+--addr2line=<path>::
+ Path to addr2line binary.
+
--objdump=<path>::
Path to objdump binary.
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index c60e615b7183..619cc8143ad5 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -161,6 +161,12 @@ Default is to monitor all CPUS.
-M::
--disassembler-style=:: Set disassembler style for objdump.
+--addr2line=<path>::
+ Path to addr2line binary.
+
+--objdump=<path>::
+ Path to objdump binary.
+
--prefix=PREFIX::
--prefix-strip=N::
Remove first N entries from source file path names in executables
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index d781639b644f..ec276db3e5dd 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -516,7 +516,7 @@ int cmd_annotate(int argc, const char **argv)
struct itrace_synth_opts itrace_synth_opts = {
.set = 0,
};
- const char *disassembler_style = NULL, *objdump_path = NULL;
+ const char *disassembler_style = NULL, *objdump_path = NULL, *addr2line_path = NULL;
struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
@@ -569,6 +569,8 @@ int cmd_annotate(int argc, const char **argv)
"Strip first N entries of source file path name in programs (with --prefix)"),
OPT_STRING(0, "objdump", &objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
+ OPT_STRING(0, "addr2line", &addr2line_path, "path",
+ "addr2line binary to use for line numbers"),
OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
"Enable symbol demangling"),
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
@@ -628,6 +630,11 @@ int cmd_annotate(int argc, const char **argv)
if (!annotate.opts.objdump_path)
return -ENOMEM;
}
+ if (addr2line_path) {
+ symbol_conf.addr2line_path = strdup(addr2line_path);
+ if (!symbol_conf.addr2line_path)
+ return -ENOMEM;
+ }
if (annotate_check_args(&annotate.opts) < 0)
return -EINVAL;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 15b0cf649e1a..4011abc03d0d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1226,7 +1226,7 @@ int cmd_report(int argc, const char **argv)
};
char *sort_order_help = sort_help("sort by key(s):");
char *field_order_help = sort_help("output field(s): overhead period sample ");
- const char *disassembler_style = NULL, *objdump_path = NULL;
+ const char *disassembler_style = NULL, *objdump_path = NULL, *addr2line_path = NULL;
const struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
@@ -1344,6 +1344,8 @@ int cmd_report(int argc, const char **argv)
"add last branch records to call history"),
OPT_STRING(0, "objdump", &objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
+ OPT_STRING(0, "addr2line", &addr2line_path, "path",
+ "addr2line binary to use for line numbers"),
OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
"Disable symbol demangling"),
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
@@ -1430,6 +1432,11 @@ int cmd_report(int argc, const char **argv)
if (!report.annotation_opts.objdump_path)
return -ENOMEM;
}
+ if (addr2line_path) {
+ symbol_conf.addr2line_path = strdup(addr2line_path);
+ if (!symbol_conf.addr2line_path)
+ return -ENOMEM;
+ }
if (annotate_check_args(&report.annotation_opts) < 0) {
ret = -EINVAL;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 57a273cd03de..82c6c065830d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1439,7 +1439,7 @@ int cmd_top(int argc, const char **argv)
};
struct record_opts *opts = &top.record_opts;
struct target *target = &opts->target;
- const char *disassembler_style = NULL, *objdump_path = NULL;
+ const char *disassembler_style = NULL, *objdump_path = NULL, *addr2line_path = NULL;
const struct option options[] = {
OPT_CALLBACK('e', "event", &top.evlist, "event",
"event selector. use 'perf list' to list available events",
@@ -1527,6 +1527,8 @@ int cmd_top(int argc, const char **argv)
OPT_BOOLEAN(0, "no-bpf-event", &top.record_opts.no_bpf_event, "do not record bpf events"),
OPT_STRING(0, "objdump", &objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
+ OPT_STRING(0, "addr2line", &addr2line_path, "path",
+ "addr2line binary to use for line numbers"),
OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
"Specify disassembler style (e.g. -M intel for intel syntax)"),
OPT_STRING(0, "prefix", &top.annotation_opts.prefix, "prefix",
@@ -1629,7 +1631,11 @@ int cmd_top(int argc, const char **argv)
if (!top.annotation_opts.objdump_path)
return -ENOMEM;
}
-
+ if (addr2line_path) {
+ symbol_conf.addr2line_path = strdup(addr2line_path);
+ if (!symbol_conf.addr2line_path)
+ return -ENOMEM;
+ }
status = symbol__validate_sym_arguments();
if (status)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 3eaa9b2df6c4..3e5df90e11f8 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -3217,6 +3217,12 @@ static int annotation__config(const char *var, const char *value, void *data)
pr_err("Not enough memory for annotate.objdump\n");
return -1;
}
+ } else if (!strcmp(var, "annotate.addr2line")) {
+ symbol_conf.addr2line_path = strdup(value);
+ if (!symbol_conf.addr2line_path) {
+ pr_err("Not enough memory for annotate.addr2line\n");
+ return -1;
+ }
} else if (!strcmp(var, "annotate.demangle")) {
symbol_conf.demangle = perf_config_bool("demangle", value);
} else if (!strcmp(var, "annotate.demangle_kernel")) {
diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index 33321867416b..f0a96a834e4b 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -414,9 +414,14 @@ static void addr2line_subprocess_cleanup(struct a2l_subprocess *a2l)
free(a2l);
}
-static struct a2l_subprocess *addr2line_subprocess_init(const char *path)
-{
- const char *argv[] = { "addr2line", "-e", path, "-i", "-f", NULL };
+static struct a2l_subprocess *addr2line_subprocess_init(const char *addr2line_path,
+ const char *binary_path)
+{
+ const char *argv[] = {
+ addr2line_path ?: "addr2line",
+ "-e", binary_path,
+ "-i", "-f", NULL
+ };
struct a2l_subprocess *a2l = zalloc(sizeof(*a2l));
int start_command_status = 0;
@@ -436,21 +441,22 @@ static struct a2l_subprocess *addr2line_subprocess_init(const char *path)
a2l->addr2line.argv = NULL; /* it's not used after start_command; avoid dangling pointers */
if (start_command_status != 0) {
- pr_warning("could not start addr2line for %s: start_command return code %d\n",
- path,
- start_command_status);
+ pr_warning("could not start addr2line (%s) for %s: start_command return code %d\n",
+ addr2line_path, binary_path, start_command_status);
goto out;
}
a2l->to_child = fdopen(a2l->addr2line.in, "w");
if (a2l->to_child == NULL) {
- pr_warning("could not open write-stream to addr2line of %s\n", path);
+ pr_warning("could not open write-stream to addr2line (%s) of %s\n",
+ addr2line_path, binary_path);
goto out;
}
a2l->from_child = fdopen(a2l->addr2line.out, "r");
if (a2l->from_child == NULL) {
- pr_warning("could not open read-stream from addr2line of %s\n", path);
+ pr_warning("could not open read-stream from addr2line (%s) of %s\n",
+ addr2line_path, binary_path);
goto out;
}
@@ -490,7 +496,6 @@ static int read_addr2line_record(struct a2l_subprocess *a2l,
if (getline(&line, &line_len, a2l->from_child) < 0 || !line_len)
goto error;
-
if (function != NULL)
*function = strdup(strim(line));
@@ -553,7 +558,8 @@ static int addr2line(const char *dso_name, u64 addr,
if (!filename__has_section(dso_name, ".debug_line"))
goto out;
- dso->a2l = addr2line_subprocess_init(dso_name);
+ dso->a2l = addr2line_subprocess_init(symbol_conf.addr2line_path,
+ dso_name);
a2l = dso->a2l;
}
diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h
index bc3d046fbb63..5accd8e69ad2 100644
--- a/tools/perf/util/symbol_conf.h
+++ b/tools/perf/util/symbol_conf.h
@@ -61,6 +61,7 @@ struct symbol_conf {
*sym_list_str,
*col_width_list_str,
*bt_stop_list_str;
+ char *addr2line_path;
unsigned long time_quantum;
struct strlist *dso_list,
*comm_list,
--
2.40.0.348.gf938b09366-goog
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