| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20201130172803.2676-10-kan.liang@linux.intel.com>
Date: Mon, 30 Nov 2020 09:28:00 -0800
From: kan.liang@...ux.intel.com
To: acme@...nel.org, mingo@...nel.org, jolsa@...hat.com
Cc: linux-kernel@...r.kernel.org, namhyung@...nel.org,
eranian@...gle.com, ak@...ux.intel.com, mark.rutland@....com,
will@...nel.org, mpe@...erman.id.au
Subject: [PATCH V2 09/12] perf tools: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
From: Stephane Eranian <eranian@...gle.com>
Adds the infrastructure to sample the code address page size.
Introduce a new --code-page-size option for perf record.
Acked-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Stephane Eranian <eranian@...gle.com>
---
tools/perf/Documentation/perf-record.txt | 3 +++
tools/perf/builtin-record.c | 2 ++
tools/perf/util/event.h | 1 +
tools/perf/util/evsel.c | 9 +++++++++
tools/perf/util/perf_event_attr_fprintf.c | 2 +-
tools/perf/util/record.h | 1 +
tools/perf/util/synthetic-events.c | 8 ++++++++
7 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index e6605b2ecd55..4d1531289124 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -296,6 +296,9 @@ OPTIONS
--data-page-size::
Record the sampled data address data page size
+--code-page-size::
+ Record the sampled code address (ip) page size
+
-T::
--timestamp::
Record the sample timestamps. Use it with 'perf report -D' to see the
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 29901f6a51bb..50c2593623e3 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -2478,6 +2478,8 @@ static struct option __record_options[] = {
"Record the sample physical addresses"),
OPT_BOOLEAN(0, "data-page-size", &record.opts.sample_data_page_size,
"Record the sampled data address data page size"),
+ OPT_BOOLEAN(0, "code-page-size", &record.opts.sample_code_page_size,
+ "Record the sampled code address (ip) page size"),
OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"),
OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time,
&record.opts.sample_time_set,
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index ff403ea578e1..2afea7247dd3 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -136,6 +136,7 @@ struct perf_sample {
u64 data_src;
u64 phys_addr;
u64 data_page_size;
+ u64 code_page_size;
u64 cgroup;
u32 flags;
u16 insn_len;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 3190cb165183..806b39b7988d 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1193,6 +1193,9 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts,
if (opts->sample_data_page_size)
evsel__set_sample_bit(evsel, DATA_PAGE_SIZE);
+ if (opts->sample_code_page_size)
+ evsel__set_sample_bit(evsel, CODE_PAGE_SIZE);
+
if (opts->record_switch_events)
attr->context_switch = track;
@@ -2374,6 +2377,12 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
array++;
}
+ data->code_page_size = 0;
+ if (type & PERF_SAMPLE_CODE_PAGE_SIZE) {
+ data->code_page_size = *array;
+ array++;
+ }
+
if (type & PERF_SAMPLE_AUX) {
OVERFLOW_CHECK_u64(array);
sz = *array++;
diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c
index fb0bb6684438..3a2eb25d07a7 100644
--- a/tools/perf/util/perf_event_attr_fprintf.c
+++ b/tools/perf/util/perf_event_attr_fprintf.c
@@ -35,7 +35,7 @@ static void __p_sample_type(char *buf, size_t size, u64 value)
bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
bit_name(WEIGHT), bit_name(PHYS_ADDR), bit_name(AUX),
- bit_name(CGROUP), bit_name(DATA_PAGE_SIZE),
+ bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), bit_name(CODE_PAGE_SIZE),
{ .name = NULL, }
};
#undef bit_name
diff --git a/tools/perf/util/record.h b/tools/perf/util/record.h
index 694b351dcd27..22dc86b1dab5 100644
--- a/tools/perf/util/record.h
+++ b/tools/perf/util/record.h
@@ -23,6 +23,7 @@ struct record_opts {
bool sample_address;
bool sample_phys_addr;
bool sample_data_page_size;
+ bool sample_code_page_size;
bool sample_weight;
bool sample_time;
bool sample_time_set;
diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index 0884a19f313b..81bc174f83f3 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -1409,6 +1409,9 @@ size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
if (type & PERF_SAMPLE_DATA_PAGE_SIZE)
result += sizeof(u64);
+ if (type & PERF_SAMPLE_CODE_PAGE_SIZE)
+ result += sizeof(u64);
+
if (type & PERF_SAMPLE_AUX) {
result += sizeof(u64);
result += sample->aux_sample.size;
@@ -1593,6 +1596,11 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type, u64 read_fo
array++;
}
+ if (type & PERF_SAMPLE_CODE_PAGE_SIZE) {
+ *array = sample->code_page_size;
+ array++;
+ }
+
if (type & PERF_SAMPLE_AUX) {
sz = sample->aux_sample.size;
*array++ = sz;
--
2.17.1
Powered by blists - more mailing lists