[tip:perf/core] perf report/top: Add --raw-trace option

From: tip-bot for Namhyung Kim
Date: Sat Jan 09 2016 - 11:25:43 EST

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Commit-ID: 053a3989e12fdf3be45c00ec1cb0ce09fba0ee4a
Gitweb: http://git.kernel.org/tip/053a3989e12fdf3be45c00ec1cb0ce09fba0ee4a
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Wed, 23 Dec 2015 02:07:05 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 6 Jan 2016 20:11:12 -0300

perf report/top: Add --raw-trace option

The --raw-trace option allows disabling pretty printing by the event's
print_fmt or plugin. Besides that, each dynamic sort key now can
receive a 'raw' suffix separated by '/' to ask for the raw trace of a
specific field.

$ perf report -s comm,kmem:kmalloc.gfp_flags
...
# Overhead Command gfp_flags
# ........ ....... ...................
#
99.89% perf GFP_NOFS|GFP_ZERO
0.06% sleep GFP_KERNEL
0.03% perf GFP_KERNEL|GFP_ZERO
0.01% perf GFP_KERNEL

Now

$ perf report -s comm,kmem:kmalloc.gfp_flags --raw-trace
or
$ perf report -s comm,kmem:kmalloc.gfp_flags/raw
...
# Overhead Command gfp_flags
# ........ ....... ..........
#
99.89% perf 32848
0.06% sleep 208
0.03% perf 32976
0.01% perf 208

Suggested-and-Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1450804030-29193-9-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/Documentation/perf-report.txt | 3 +++
tools/perf/Documentation/perf-top.txt | 3 +++
tools/perf/builtin-report.c | 2 ++
tools/perf/builtin-top.c | 2 ++
tools/perf/util/sort.c | 32 +++++++++++++++++++++++++++++---
tools/perf/util/symbol.h | 3 ++-
6 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index dab99ed..ae7cd91 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -371,6 +371,9 @@ include::itrace.txt[]
--socket-filter::
Only report the samples on the processor socket that match with this filter

+--raw-trace::
+ When displaying traceevent output, do not use print fmt or plugins.
+
include::callchain-overhead-calculation.txt[]

SEE ALSO
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 556cec0..b0e60e1 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -230,6 +230,9 @@ Default is to monitor all CPUS.
The various filters must be specified as a comma separated list: --branch-filter any_ret,u,k
Note that this feature may not be available on all processors.

+--raw-trace::
+ When displaying traceevent output, do not use print fmt or plugins.
+
INTERACTIVE PROMPTING KEYS
--------------------------

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ea53c81..f10c663 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -788,6 +788,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
"Show callgraph from reference event"),
OPT_INTEGER(0, "socket-filter", &report.socket_filter,
"only show processor socket that match with this filter"),
+ OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
+ "Show raw trace event output (do not use print fmt or plugins)"),
OPT_END()
};
struct perf_data_file file = {
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 0058259..bf01cbb 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1210,6 +1210,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_CALLBACK('j', "branch-filter", &opts->branch_stack,
"branch filter mask", "branch stack filter modes",
parse_branch_stack),
+ OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
+ "Show raw trace event output (do not use print fmt or plugins)"),
OPT_END()
};
const char * const top_usage[] = {
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index db8476a..3477685 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -459,7 +459,12 @@ static char *get_trace_output(struct hist_entry *he)
evsel = hists_to_evsel(he->hists);

trace_seq_init(&seq);
- pevent_event_info(&seq, evsel->tp_format, &rec);
+ if (symbol_conf.raw_trace) {
+ pevent_print_fields(&seq, he->raw_data, he->raw_size,
+ evsel->tp_format);
+ } else {
+ pevent_event_info(&seq, evsel->tp_format, &rec);
+ }
return seq.buffer;
}

@@ -1596,6 +1601,7 @@ struct hpp_dynamic_entry {
struct perf_evsel *evsel;
struct format_field *field;
unsigned dynamic_len;
+ bool raw_trace;
};

static int hde_width(struct hpp_dynamic_entry *hde)
@@ -1628,6 +1634,9 @@ static void update_dynamic_len(struct hpp_dynamic_entry *hde,
size_t namelen;
bool last = false;

+ if (hde->raw_trace)
+ return;
+
/* parse pretty print result and update max length */
if (!he->trace_output)
he->trace_output = get_trace_output(he);
@@ -1708,8 +1717,10 @@ static int __sort__hde_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
if (hists_to_evsel(he->hists) != hde->evsel)
return scnprintf(hpp->buf, hpp->size, "%*.*s", len, len, "N/A");

- field = hde->field;
+ if (hde->raw_trace)
+ goto raw_field;

+ field = hde->field;
namelen = strlen(field->name);
str = he->trace_output;

@@ -1738,6 +1749,7 @@ static int __sort__hde_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,

if (str == NULL) {
struct trace_seq seq;
+raw_field:
trace_seq_init(&seq);
pevent_print_field(&seq, he->raw_data, hde->field);
str = seq.buffer;
@@ -1818,10 +1830,11 @@ __alloc_dynamic_entry(struct perf_evsel *evsel, struct format_field *field)

static int add_dynamic_entry(struct perf_evlist *evlist, const char *tok)
{
- char *str, *event_name, *field_name;
+ char *str, *event_name, *field_name, *raw_opt;
struct perf_evsel *evsel, *pos;
struct format_field *field;
struct hpp_dynamic_entry *hde;
+ bool raw_trace = symbol_conf.raw_trace;
int ret = 0;

if (evlist == NULL)
@@ -1839,6 +1852,18 @@ static int add_dynamic_entry(struct perf_evlist *evlist, const char *tok)
}
*field_name++ = '\0';

+ raw_opt = strchr(field_name, '/');
+ if (raw_opt) {
+ *raw_opt++ = '\0';
+
+ if (strcmp(raw_opt, "raw")) {
+ pr_err("Unsupported field option %s\n", raw_opt);
+ ret = -EINVAL;
+ goto out;
+ }
+ raw_trace = true;
+ }
+
evsel = NULL;
evlist__for_each(evlist, pos) {
if (!strcmp(pos->name, event_name)) {
@@ -1872,6 +1897,7 @@ static int add_dynamic_entry(struct perf_evlist *evlist, const char *tok)
ret = -ENOMEM;
goto out;
}
+ hde->raw_trace = raw_trace;

perf_hpp__register_sort_field(&hde->hpp);

diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 857f707..ccd1caa 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -109,7 +109,8 @@ struct symbol_conf {
branch_callstack,
has_filter,
show_ref_callgraph,
- hide_unresolved;
+ hide_unresolved,
+ raw_trace;
const char *vmlinux_name,
*kallsyms_name,
*source_prefix,

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