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Subject[PATCH 05/15 V3] perf, c2c: Rework setup code to prepare for features
Date
A basic patch that re-arranges some of the c2c code and adds a couple
of small features to lay the ground work for the rest of the patch
series.

Changes include:

o reworking the report path
o replace preprocess_sample with simpler calls
o rework raw output to handle separators
o remove phys id gunk
o add some generic options

There isn't much meat in this patch just a bunch of code movement and cleanups.

V2: refresh to latest upstream changes

Signed-off-by: Don Zickus <dzickus@redhat.com>
---
tools/perf/builtin-c2c.c | 125 +++++++++++++++++++++++++++++++++++------------
1 file changed, 93 insertions(+), 32 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 7082913..72dd9d5 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -5,6 +5,7 @@
#include "util/parse-options.h"
#include "util/session.h"
#include "util/tool.h"
+#include "util/debug.h"

#include <linux/compiler.h>
#include <linux/kernel.h>
@@ -105,34 +106,55 @@ static int perf_c2c__fprintf_header(FILE *fp)
}

static int perf_sample__fprintf(struct perf_sample *sample, char tag,
- const char *reason, struct addr_location *al, FILE *fp)
+ const char *reason, struct mem_info *mi, FILE *fp)
{
char data_src[61];
+ const char *fmt, *sep;
+ struct map *map = mi->iaddr.map;

perf_c2c__scnprintf_data_src(data_src, sizeof(data_src), sample->data_src);

- return fprintf(fp, "%c %-16s %6d %6d %4d %#18" PRIx64 " %#18" PRIx64 " %#18" PRIx64 " %6" PRIu64 " %#10" PRIx64 " %-60.60s %s:%s\n",
- tag,
- reason ?: "valid record",
- sample->pid,
- sample->tid,
- sample->cpu,
- sample->ip,
- sample->addr,
- 0UL,
- sample->weight,
- sample->data_src,
- data_src,
- al->map ? (al->map->dso ? al->map->dso->long_name : "???") : "???",
- al->sym ? al->sym->name : "???");
+ if (symbol_conf.field_sep) {
+ fmt = "%c%s%s%s%d%s%d%s%d%s%#"PRIx64"%s%#"PRIx64"%s"
+ "%"PRIu64"%s%#"PRIx64"%s%s%s%s:%s\n";
+ sep = symbol_conf.field_sep;
+ } else {
+ fmt = "%c%s%-16s%s%6d%s%6d%s%4d%s%#18"PRIx64"%s%#18"PRIx64"%s"
+ "%6"PRIu64"%s%#10"PRIx64"%s%-60.60s%s%s:%s\n";
+ sep = " ";
+ }
+
+ return fprintf(fp, fmt,
+ tag, sep,
+ reason ?: "valid record", sep,
+ sample->pid, sep,
+ sample->tid, sep,
+ sample->cpu, sep,
+ sample->ip, sep,
+ sample->addr, sep,
+ sample->weight, sep,
+ sample->data_src, sep,
+ data_src, sep,
+ map ? (map->dso ? map->dso->long_name : "???") : "???",
+ mi->iaddr.sym ? mi->iaddr.sym->name : "???");
}

static int perf_c2c__process_load_store(struct perf_c2c *c2c,
+ struct addr_location *al,
struct perf_sample *sample,
- struct addr_location *al)
+ struct perf_evsel *evsel)
{
- if (c2c->raw_records)
- perf_sample__fprintf(sample, ' ', "raw input", al, stdout);
+ struct mem_info *mi;
+
+ mi = sample__resolve_mem(sample, al);
+ if (!mi)
+ return -ENOMEM;
+
+ if (c2c->raw_records) {
+ perf_sample__fprintf(sample, ' ', "raw input", mi, stdout);
+ free(mi);
+ return 0;
+ }

return 0;
}
@@ -143,8 +165,9 @@ static const struct perf_evsel_str_handler handlers[] = {
};

typedef int (*sample_handler)(struct perf_c2c *c2c,
+ struct addr_location *al,
struct perf_sample *sample,
- struct addr_location *al);
+ struct perf_evsel *evsel);

static int perf_c2c__process_sample(struct perf_tool *tool,
union perf_event *event,
@@ -153,20 +176,51 @@ static int perf_c2c__process_sample(struct perf_tool *tool,
struct machine *machine)
{
struct perf_c2c *c2c = container_of(tool, struct perf_c2c, tool);
- struct addr_location al;
- int err = 0;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct thread *thread;
+ sample_handler f;
+ int err = -1;
+ struct addr_location al = {
+ .machine = machine,
+ .cpu = sample->cpu,
+ .cpumode = cpumode,
+ };
+
+ if (evsel->handler == NULL)
+ return 0;

- if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
- pr_err("problem processing %d event, skipping it.\n",
- event->header.type);
- return -1;
+ thread = machine__find_thread(machine, sample->pid, sample->tid);
+ if (thread == NULL) {
+ printf("Could not find thread for tid %d\n", sample->tid);
+ return 0;
}

- if (evsel->handler != NULL) {
- sample_handler f = evsel->handler;
- err = f(c2c, sample, &al);
+ al.thread = thread;
+
+ f = evsel->handler;
+ err = f(c2c, &al, sample, evsel);
+ if (err)
+ goto err;
+
+ return 0;
+err:
+ if (err > 0)
+ err = 0;
+ return err;
+}
+
+static int perf_c2c__process_events(struct perf_session *session,
+ struct perf_c2c *c2c)
+{
+ int err = -1;
+
+ err = perf_session__process_events(session, &c2c->tool);
+ if (err) {
+ pr_err("Failed to process count events, error %d\n", err);
+ goto err;
}

+err:
return err;
}

@@ -197,9 +251,7 @@ static int perf_c2c__read_events(struct perf_c2c *c2c)
}
}

- err = perf_session__process_events(session, &c2c->tool);
- if (err)
- pr_err("Failed to process events, error %d", err);
+ err = perf_c2c__process_events(session, c2c);

out:
return err;
@@ -221,7 +273,6 @@ static int perf_c2c__record(int argc, const char **argv)
const char **rec_argv;
const char * const record_args[] = {
"record",
- /* "--phys-addr", */
"-W",
"-d",
"-a",
@@ -254,6 +305,8 @@ int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
struct perf_c2c c2c = {
.tool = {
.sample = perf_c2c__process_sample,
+ .mmap2 = perf_event__process_mmap2,
+ .mmap = perf_event__process_mmap,
.comm = perf_event__process_comm,
.exit = perf_event__process_exit,
.fork = perf_event__process_fork,
@@ -263,6 +316,14 @@ int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
};
const struct option c2c_options[] = {
OPT_BOOLEAN('r', "raw_records", &c2c.raw_records, "dump raw events"),
+ OPT_INCR('v', "verbose", &verbose,
+ "be more verbose (show counter open errors, etc)"),
+ OPT_STRING('i', "input", &input_name, "file",
+ "the input file to process"),
+ OPT_STRING('x', "field-separator", &symbol_conf.field_sep,
+ "separator",
+ "separator for columns, no spaces will be added"
+ " between columns '.' is reserved."),
OPT_END()
};
const char * const c2c_usage[] = {
--
1.7.11.7


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