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Subject[tip:perf/urgent] perf tools: Support new sample type for physical address
Commit-ID:  3b0a5daa061076b2b75ffc294e74483ad9bf241a
Gitweb: http://git.kernel.org/tip/3b0a5daa061076b2b75ffc294e74483ad9bf241a
Author: Kan Liang <kan.liang@intel.com>
AuthorDate: Tue, 29 Aug 2017 13:11:08 -0400
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 1 Sep 2017 14:46:00 -0300

perf tools: Support new sample type for physical address

Support new sample type PERF_SAMPLE_PHYS_ADDR for physical address.

Add new option --phys-data to record sample physical address.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1504026672-7304-2-git-send-email-kan.liang@intel.com
[ Added missing printing in evsel.c patch sent by Jiri Olsa ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/include/uapi/linux/perf_event.h | 4 +++-
tools/perf/Documentation/perf-record.txt | 5 ++++-
tools/perf/builtin-record.c | 2 ++
tools/perf/perf.h | 1 +
tools/perf/util/event.h | 1 +
tools/perf/util/evsel.c | 19 ++++++++++++++++++-
6 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 2a37ae9..140ae63 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -139,8 +139,9 @@ enum perf_event_sample_format {
PERF_SAMPLE_IDENTIFIER = 1U << 16,
PERF_SAMPLE_TRANSACTION = 1U << 17,
PERF_SAMPLE_REGS_INTR = 1U << 18,
+ PERF_SAMPLE_PHYS_ADDR = 1U << 19,

- PERF_SAMPLE_MAX = 1U << 19, /* non-ABI */
+ PERF_SAMPLE_MAX = 1U << 20, /* non-ABI */
};

/*
@@ -814,6 +815,7 @@ enum perf_event_type {
* { u64 transaction; } && PERF_SAMPLE_TRANSACTION
* { u64 abi; # enum perf_sample_regs_abi
* u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR
+ * { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR
* };
*/
PERF_RECORD_SAMPLE = 9,
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 9bdea04..e397453 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -249,7 +249,10 @@ OPTIONS

-d::
--data::
- Record the sample addresses.
+ Record the sample virtual addresses.
+
+--phys-data::
+ Record the sample physical addresses.

-T::
--timestamp::
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 36d7117..56f8142 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1604,6 +1604,8 @@ static struct option __record_options[] = {
OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat,
"per thread counts"),
OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"),
+ OPT_BOOLEAN(0, "phys-data", &record.opts.sample_phys_addr,
+ "Record the sample physical addresses"),
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/perf.h b/tools/perf/perf.h
index 2c010dd..dc442ba 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -43,6 +43,7 @@ struct record_opts {
bool no_samples;
bool raw_samples;
bool sample_address;
+ bool sample_phys_addr;
bool sample_weight;
bool sample_time;
bool sample_time_set;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 423ac82..ee7bcc8 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -200,6 +200,7 @@ struct perf_sample {
u32 cpu;
u32 raw_size;
u64 data_src;
+ u64 phys_addr;
u32 flags;
u16 insn_len;
u8 cpumode;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index d9bd632..4bb8937 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -955,6 +955,9 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
if (opts->sample_address)
perf_evsel__set_sample_bit(evsel, DATA_SRC);

+ if (opts->sample_phys_addr)
+ perf_evsel__set_sample_bit(evsel, PHYS_ADDR);
+
if (opts->no_buffering) {
attr->watermark = 0;
attr->wakeup_events = 1;
@@ -1464,7 +1467,7 @@ static void __p_sample_type(char *buf, size_t size, u64 value)
bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
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(WEIGHT), bit_name(PHYS_ADDR),
{ .name = NULL, }
};
#undef bit_name
@@ -2206,6 +2209,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
}
}

+ data->phys_addr = 0;
+ if (type & PERF_SAMPLE_PHYS_ADDR) {
+ data->phys_addr = *array;
+ array++;
+ }
+
return 0;
}

@@ -2311,6 +2320,9 @@ size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
}
}

+ if (type & PERF_SAMPLE_PHYS_ADDR)
+ result += sizeof(u64);
+
return result;
}

@@ -2500,6 +2512,11 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
}
}

+ if (type & PERF_SAMPLE_PHYS_ADDR) {
+ *array = sample->phys_addr;
+ array++;
+ }
+
return 0;
}

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