[PATCH V4 03/13] perf script: Support data page size

kan.liang
2019-01-31T20:29:48Z

From: Kan Liang <kan.liang@linux.intel.com>

Display the data page size if it is available.

Can be configured by the user, for example:
perf script --fields comm,event,phys_addr,data_page_size
dtlb mem-loads:uP: 3fec82ea8 4K
dtlb mem-loads:uP: 3fec82e90 4K
dtlb mem-loads:uP: 3e23700a4 4K
dtlb mem-loads:uP: 3fec82f20 4K
dtlb mem-loads:uP: 3e23700a4 4K
dtlb mem-loads:uP: 3b4211bec 4K
dtlb mem-loads:uP: 382205dc0 2M
dtlb mem-loads:uP: 36fa082c0 2M
dtlb mem-loads:uP: 377607340 2M
dtlb mem-loads:uP: 330010180 2M
dtlb mem-loads:uP: 33200fd80 2M
dtlb mem-loads:uP: 31b012b80 2M

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---

Changes since V3
- Use the real page size to replace enum.
- Modify the get_page_size_name()

tools/perf/Documentation/perf-script.txt | 5 +++--
tools/perf/builtin-script.c | 19 +++++++++++++++++--
tools/perf/util/event.h | 3 +++
tools/perf/util/session.c | 23 +++++++++++++++++++++++
4 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 9e4def0..14ae84c1 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -116,8 +116,9 @@ OPTIONS
--fields::
Comma separated list of fields to print. Options are:
comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
- srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output, brstackinsn,
- brstackoff, callindent, insn, insnlen, synth, phys_addr, metric, misc, srccode.
+ srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output,
+ brstackinsn, brstackoff, callindent, insn, insnlen, synth, phys_addr,
+ metric, misc, srccode, data_page_size.
Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index d079f36..440ae80 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -27,6 +27,7 @@
#include "util/thread-stack.h"
#include "util/time-utils.h"
#include "util/path.h"
+#include "util/event.h"
#include "print_binary.h"
#include <linux/bitmap.h>
#include <linux/kernel.h>
@@ -97,6 +98,7 @@ enum perf_output_field {
PERF_OUTPUT_METRIC = 1U << 28,
PERF_OUTPUT_MISC = 1U << 29,
PERF_OUTPUT_SRCCODE = 1U << 30,
+ PERF_OUTPUT_DATA_PAGE_SIZE = 1U << 31,
};

struct output_option {
@@ -134,6 +136,7 @@ struct output_option {
{.str = "metric", .field = PERF_OUTPUT_METRIC},
{.str = "misc", .field = PERF_OUTPUT_MISC},
{.str = "srccode", .field = PERF_OUTPUT_SRCCODE},
+ {.str = "data_page_size", .field = PERF_OUTPUT_DATA_PAGE_SIZE},
};

enum {
@@ -204,7 +207,8 @@ static struct {
PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD |
PERF_OUTPUT_ADDR | PERF_OUTPUT_DATA_SRC |
- PERF_OUTPUT_WEIGHT | PERF_OUTPUT_PHYS_ADDR,
+ PERF_OUTPUT_WEIGHT | PERF_OUTPUT_PHYS_ADDR |
+ PERF_OUTPUT_DATA_PAGE_SIZE,

.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -468,6 +472,11 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
PERF_OUTPUT_PHYS_ADDR))
return -EINVAL;

+ if (PRINT_FIELD(DATA_PAGE_SIZE) &&
+ perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_PAGE_SIZE, "DATA_PAGE_SIZE",
+ PERF_OUTPUT_DATA_PAGE_SIZE))
+ return -EINVAL;
+
return 0;
}

@@ -1762,6 +1771,7 @@ static void process_event(struct perf_script *script,
unsigned int type = output_type(attr->type);
struct perf_evsel_script *es = evsel->priv;
FILE *fp = es->fp;
+ char str[PAGE_SIZE_NAME_LEN];

if (output[type].fields == 0)
return;
@@ -1842,6 +1852,10 @@ static void process_event(struct perf_script *script,

if (PRINT_FIELD(PHYS_ADDR))
fprintf(fp, "%16" PRIx64, sample->phys_addr);
+
+ if (PRINT_FIELD(DATA_PAGE_SIZE))
+ fprintf(fp, " %s", get_page_size_name(sample->data_page_size, str));
+
fprintf(fp, "\n");

if (PRINT_FIELD(SRCCODE)) {
@@ -3337,7 +3351,8 @@ int cmd_script(int argc, const char **argv)
"Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
"addr,symoff,srcline,period,iregs,uregs,brstack,"
"brstacksym,flags,bpf-output,brstackinsn,brstackoff,"
- "callindent,insn,insnlen,synth,phys_addr,metric,misc",
+ "callindent,insn,insnlen,synth,phys_addr,metric,misc,"
+ "data_page_size",
parse_output_fields),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 53d1a41..7ef06fc 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -846,4 +846,7 @@ extern int sysctl_perf_event_max_stack;
extern int sysctl_perf_event_max_contexts_per_stack;
extern unsigned int proc_map_timeout;

+#define PAGE_SIZE_NAME_LEN 10
+char *get_page_size_name(u64 size, char *str);
+
#endif /* __PERF_RECORD_H */
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 24fd625..9ad3686 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1082,10 +1082,30 @@ static void dump_event(struct perf_evlist *evlist, union perf_event *event,
event->header.size, perf_event__name(event->header.type));
}

+char *get_page_size_name(u64 size, char *str)
+{
+ const char suffixes[5] = { 'B', 'K', 'M', 'G', 'T' };
+ int i;
+
+ if (size == 0) {
+ snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A");
+ return str;
+ }
+ for (i = 0; i < 5; i++) {
+ if (size < 1024)
+ break;
+ size /= 1024;
+ }
+
+ snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
+ return str;
+}
+
static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *sample)
{
u64 sample_type;
+ char str[PAGE_SIZE_NAME_LEN];

if (!dump_trace)
return;
@@ -1120,6 +1140,9 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
if (sample_type & PERF_SAMPLE_PHYS_ADDR)
printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);

+ if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)
+ printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str));
+
if (sample_type & PERF_SAMPLE_TRANSACTION)
printf("... transaction: %" PRIx64 "\n", sample->transaction);

--
2.7.4