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Subject[PATCH RFC 3/7] perf script: Support page size
Date
From: Kan Liang <kan.liang@linux.intel.com>

Display the page size if it is available.

Can be configured by the user, for example:
perf script --fields comm,event,phys_addr,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>
---
tools/perf/Documentation/perf-script.txt | 2 +-
tools/perf/builtin-script.c | 18 ++++++++++++++++--
tools/perf/util/event.h | 2 ++
tools/perf/util/session.c | 19 +++++++++++++++++++
4 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index afdafe2..c7cd34d 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -117,7 +117,7 @@ OPTIONS
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.
+ brstackoff, callindent, insn, insnlen, synth, phys_addr, metric, misc, 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 568ddfa..fa8e487 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>
@@ -95,6 +96,7 @@ enum perf_output_field {
PERF_OUTPUT_UREGS = 1U << 27,
PERF_OUTPUT_METRIC = 1U << 28,
PERF_OUTPUT_MISC = 1U << 29,
+ PERF_OUTPUT_PAGE_SIZE = 1U << 30,
};

struct output_option {
@@ -131,6 +133,7 @@ struct output_option {
{.str = "phys_addr", .field = PERF_OUTPUT_PHYS_ADDR},
{.str = "metric", .field = PERF_OUTPUT_METRIC},
{.str = "misc", .field = PERF_OUTPUT_MISC},
+ {.str = "page_size", .field = PERF_OUTPUT_PAGE_SIZE},
};

enum {
@@ -201,7 +204,8 @@ 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_PAGE_SIZE,

.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -465,6 +469,11 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
PERF_OUTPUT_PHYS_ADDR))
return -EINVAL;

+ if (PRINT_FIELD(PAGE_SIZE) &&
+ perf_evsel__check_stype(evsel, PERF_SAMPLE_PAGE_SIZE, "PAGE_SIZE",
+ PERF_OUTPUT_PAGE_SIZE))
+ return -EINVAL;
+
return 0;
}

@@ -1706,6 +1715,10 @@ static void process_event(struct perf_script *script,

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

if (PRINT_FIELD(METRIC))
@@ -3150,7 +3163,8 @@ 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,"
+ "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 51456b8..7e7a820 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -831,4 +831,6 @@ int perf_event_paranoid(void);
extern int sysctl_perf_event_max_stack;
extern int sysctl_perf_event_max_contexts_per_stack;

+const char *get_page_size_name(u64 level);
+
#endif /* __PERF_RECORD_H */
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 8b93693..5c61820 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1080,6 +1080,22 @@ static void dump_event(struct perf_evlist *evlist, union perf_event *event,
event->header.size, perf_event__name(event->header.type));
}

+const char *get_page_size_name(u64 level)
+{
+ switch (level) {
+ case PERF_MEM_PAGE_SIZE_4K:
+ return "4K";
+ case PERF_MEM_PAGE_SIZE_2M:
+ return "2M";
+ case PERF_MEM_PAGE_SIZE_1G:
+ return "1G";
+ case PERF_MEM_PAGE_SIZE_512G:
+ return "512G";
+ default:
+ return "N/A";
+ }
+}
+
static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *sample)
{
@@ -1118,6 +1134,9 @@ 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_PAGE_SIZE)
+ printf(" .. page size: %s\n", get_page_size_name(sample->page_size));
+
if (sample_type & PERF_SAMPLE_TRANSACTION)
printf("... transaction: %" PRIx64 "\n", sample->transaction);

--
2.7.4
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