[PATCH v5 0/2] perf tool: 'config3' attribute support

[PATCH v5 0/2] perf tool: 'config3' attribute support

[Rob Herring]

This series adds the perf tool support for 'config3' attr. This is 
the last part to enable Arm SPEv1.2 support. The necessary kernel side 
changes are pending for v6.3[1].

[1] https://lore.kernel.org/all/20230207124250.GA12385@willie-the-truck/

---
Changes in v5:
- Rebase on v6.2-rc1
- Drop applied config attr fix
- Link to v4: https://lore.kernel.org/r/20220914-arm-perf-tool-spe1-2-v2-v4-0-83c098e6212e@kernel.org

Changes in v4:
- Fix event parsing test segfault
- Add 'config3' in event parsing tests
- Link to v3: https://lore.kernel.org/r/20220914-arm-perf-tool-spe1-2-v2-v3-0-8189fc04dcc6@kernel.org

---
Rob Herring (2):
      perf tools: Sync perf_event_attr::config3 addition
      perf: Add support for perf_event_attr::config3

 tools/include/uapi/linux/perf_event.h |  3 +++
 tools/perf/tests/parse-events.c       | 13 ++++++++++++-
 tools/perf/util/parse-events.c        |  6 ++++++
 tools/perf/util/parse-events.h        |  1 +
 tools/perf/util/parse-events.l        |  1 +
 tools/perf/util/pmu.c                 |  3 +++
 tools/perf/util/pmu.h                 |  1 +
 7 files changed, 27 insertions(+), 1 deletion(-)
---
base-commit: 9abf2313adc1ca1b6180c508c25f22f9395cc780
change-id: 20220914-arm-perf-tool-spe1-2-v2-cab789c5d598

Best regards,
-- 
Rob Herring <robh@kernel.org>

[PATCH v5 1/2] perf tools: Sync perf_event_attr::config3 addition

[Rob Herring]

Arm SPEv1.2 adds another 64-bits of event filtering control. As the
existing perf_event_attr::configN fields are all used up for SPE PMU, an
additional field is needed. Add a new 'config3' field.

Signed-off-by: Rob Herring <robh@kernel.org>
---
This matches commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
for the kernel queued in linux-next.
---
 tools/include/uapi/linux/perf_event.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index ea6defacc1a7..a38814ce9485 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -365,6 +365,7 @@ enum perf_event_read_format {
 #define PERF_ATTR_SIZE_VER5	112	/* add: aux_watermark */
 #define PERF_ATTR_SIZE_VER6	120	/* add: aux_sample_size */
 #define PERF_ATTR_SIZE_VER7	128	/* add: sig_data */
+#define PERF_ATTR_SIZE_VER8	136	/* add: config3 */
 
 /*
  * Hardware event_id to monitor via a performance monitoring event:
@@ -506,6 +507,8 @@ struct perf_event_attr {
 	 * truncated accordingly on 32 bit architectures.
 	 */
 	__u64	sig_data;
+
+	__u64	config3; /* extension of config2 */
 };
 
 /*

-- 
2.39.1

Re: [PATCH v5 1/2] perf tools: Sync perf_event_attr::config3 addition

[Arnaldo Carvalho de Melo]

Em Fri, Feb 17, 2023 at 04:32:10PM -0600, Rob Herring escreveu:
> Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> existing perf_event_attr::configN fields are all used up for SPE PMU, an
> additional field is needed. Add a new 'config3' field.
> 
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> This matches commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
> for the kernel queued in linux-next.

When you mention linux-next where was it that it picked this from?

For me to get this merged into the perf tools "next" (perf/core) it must
already have been merged in the kernel counterpart (tip/perf/core).

Ok so it is not in tip/perf/core, but got in next yesterday, and PeterZ
acked it, good, will process it soon.

- Arnaldo

⬢[acme@toolbox perf]$ git show 09519ec3b19e
commit 09519ec3b19e4144b5f6e269c54fbb9c294a9fcb
Author: Rob Herring <robh@kernel.org>
Date:   Mon Jan 9 13:26:23 2023 -0600

    perf: Add perf_event_attr::config3

    Arm SPEv1.2 adds another 64-bits of event filtering control. As the
    existing perf_event_attr::configN fields are all used up for SPE PMU, an
    additional field is needed. Add a new 'config3' field.

    Tested-by: James Clark <james.clark@arm.com>
    Signed-off-by: Rob Herring <robh@kernel.org>
    Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Link: https://lore.kernel.org/r/20220825-arm-spe-v8-7-v4-7-327f860daf28@kernel.org
    Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index ccb7f5dad59be96b..37675437b76860ae 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -374,6 +374,7 @@ enum perf_event_read_format {
 #define PERF_ATTR_SIZE_VER5    112     /* add: aux_watermark */
 #define PERF_ATTR_SIZE_VER6    120     /* add: aux_sample_size */
 #define PERF_ATTR_SIZE_VER7    128     /* add: sig_data */
+#define PERF_ATTR_SIZE_VER8    136     /* add: config3 */

 /*
  * Hardware event_id to monitor via a performance monitoring event:
@@ -515,6 +516,8 @@ struct perf_event_attr {
         * truncated accordingly on 32 bit architectures.
         */
        __u64   sig_data;
+
+       __u64   config3; /* extension of config2 */
 };

 /*
⬢[acme@toolbox perf]$
⬢[acme@toolbox perf]$
⬢[acme@toolbox perf]$
⬢[acme@toolbox perf]$
⬢[acme@toolbox perf]$ git tag --contains 09519ec3b19e4144b5f6e269c54fbb9c294a9fcb
next-20230217
⬢[acme@toolbox perf]$


> ---
>  tools/include/uapi/linux/perf_event.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
> index ea6defacc1a7..a38814ce9485 100644
> --- a/tools/include/uapi/linux/perf_event.h
> +++ b/tools/include/uapi/linux/perf_event.h
> @@ -365,6 +365,7 @@ enum perf_event_read_format {
>  #define PERF_ATTR_SIZE_VER5	112	/* add: aux_watermark */
>  #define PERF_ATTR_SIZE_VER6	120	/* add: aux_sample_size */
>  #define PERF_ATTR_SIZE_VER7	128	/* add: sig_data */
> +#define PERF_ATTR_SIZE_VER8	136	/* add: config3 */
>  
>  /*
>   * Hardware event_id to monitor via a performance monitoring event:
> @@ -506,6 +507,8 @@ struct perf_event_attr {
>  	 * truncated accordingly on 32 bit architectures.
>  	 */
>  	__u64	sig_data;
> +
> +	__u64	config3; /* extension of config2 */
>  };
>  
>  /*
> 
> -- 
> 2.39.1
> 

Re: [PATCH v5 1/2] perf tools: Sync perf_event_attr::config3 addition

[Rob Herring]

On Sat, Feb 18, 2023 at 7:21 AM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> Em Fri, Feb 17, 2023 at 04:32:10PM -0600, Rob Herring escreveu:
> > Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> > existing perf_event_attr::configN fields are all used up for SPE PMU, an
> > additional field is needed. Add a new 'config3' field.
> >
> > Signed-off-by: Rob Herring <robh@kernel.org>
> > ---
> > This matches commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
> > for the kernel queued in linux-next.
>
> When you mention linux-next where was it that it picked this from?
>
> For me to get this merged into the perf tools "next" (perf/core) it must
> already have been merged in the kernel counterpart (tip/perf/core).
>
> Ok so it is not in tip/perf/core, but got in next yesterday, and PeterZ
> acked it, good, will process it soon.

Hi Arnaldo, Are you going to apply this or are you expecting something from me?

Rob

Re: [PATCH v5 1/2] perf tools: Sync perf_event_attr::config3 addition

[Arnaldo Carvalho de Melo]

Em Mon, Mar 20, 2023 at 01:21:10PM -0500, Rob Herring escreveu:
> On Sat, Feb 18, 2023 at 7:21 AM Arnaldo Carvalho de Melo
> <acme@kernel.org> wrote:
> >
> > Em Fri, Feb 17, 2023 at 04:32:10PM -0600, Rob Herring escreveu:
> > > Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> > > existing perf_event_attr::configN fields are all used up for SPE PMU, an
> > > additional field is needed. Add a new 'config3' field.
> > >
> > > Signed-off-by: Rob Herring <robh@kernel.org>
> > > ---
> > > This matches commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
> > > for the kernel queued in linux-next.
> >
> > When you mention linux-next where was it that it picked this from?
> >
> > For me to get this merged into the perf tools "next" (perf/core) it must
> > already have been merged in the kernel counterpart (tip/perf/core).
> >
> > Ok so it is not in tip/perf/core, but got in next yesterday, and PeterZ
> > acked it, good, will process it soon.
> 
> Hi Arnaldo, Are you going to apply this or are you expecting something from me?

Sorry for the delay, applied.

- Arnaldo

Re: [PATCH v5 1/2] perf tools: Sync perf_event_attr::config3 addition

[kajoljain]

On 2/18/23 04:02, Rob Herring wrote:
> Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> existing perf_event_attr::configN fields are all used up for SPE PMU, an
> additional field is needed. Add a new 'config3' field.
> 
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> This matches commit 09519ec3b19e ("perf: Add perf_event_attr::config3")
> for the kernel queued in linux-next.
> ---
>  tools/include/uapi/linux/perf_event.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
> index ea6defacc1a7..a38814ce9485 100644
> --- a/tools/include/uapi/linux/perf_event.h
> +++ b/tools/include/uapi/linux/perf_event.h
> @@ -365,6 +365,7 @@ enum perf_event_read_format {
>  #define PERF_ATTR_SIZE_VER5	112	/* add: aux_watermark */
>  #define PERF_ATTR_SIZE_VER6	120	/* add: aux_sample_size */
>  #define PERF_ATTR_SIZE_VER7	128	/* add: sig_data */
> +#define PERF_ATTR_SIZE_VER8	136	/* add: config3 */
>  
>  /*
>   * Hardware event_id to monitor via a performance monitoring event:
> @@ -506,6 +507,8 @@ struct perf_event_attr {
>  	 * truncated accordingly on 32 bit architectures.
>  	 */
>  	__u64	sig_data;
> +
> +	__u64	config3; /* extension of config2 */

Patch looks fine to me.

Reviewed-by: Kajol Jain <kjain@linux.ibm.com>

Thanks,
Kajol Jain
>  };
>  
>  /*
> 

[PATCH v5 2/2] perf: Add support for perf_event_attr::config3

[Rob Herring]

perf_event_attr has gained a new field, config3, so add support for it
extending the existing configN support.

Signed-off-by: Rob Herring <robh@kernel.org>
---
v5:
 - Rebase on v6.2-rc1

v4:
 - Add config3 to event parsing tests
---
 tools/perf/tests/parse-events.c | 13 ++++++++++++-
 tools/perf/util/parse-events.c  |  6 ++++++
 tools/perf/util/parse-events.h  |  1 +
 tools/perf/util/parse-events.l  |  1 +
 tools/perf/util/pmu.c           |  3 +++
 tools/perf/util/pmu.h           |  1 +
 6 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 459afdb256a1..ddd5bdfe5723 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -444,6 +444,7 @@ static int test__checkevent_pmu(struct evlist *evlist)
 	TEST_ASSERT_VAL("wrong config",    10 == evsel->core.attr.config);
 	TEST_ASSERT_VAL("wrong config1",    1 == evsel->core.attr.config1);
 	TEST_ASSERT_VAL("wrong config2",    3 == evsel->core.attr.config2);
+	TEST_ASSERT_VAL("wrong config3",    0 == evsel->core.attr.config3);
 	/*
 	 * The period value gets configured within evlist__config,
 	 * while this test executes only parse events method.
@@ -464,6 +465,7 @@ static int test__checkevent_list(struct evlist *evlist)
 	TEST_ASSERT_VAL("wrong config", 1 == evsel->core.attr.config);
 	TEST_ASSERT_VAL("wrong config1", 0 == evsel->core.attr.config1);
 	TEST_ASSERT_VAL("wrong config2", 0 == evsel->core.attr.config2);
+	TEST_ASSERT_VAL("wrong config3", 0 == evsel->core.attr.config3);
 	TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user);
 	TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel);
 	TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv);
@@ -625,6 +627,15 @@ static int test__checkterms_simple(struct list_head *terms)
 	TEST_ASSERT_VAL("wrong val", term->val.num == 3);
 	TEST_ASSERT_VAL("wrong config", !strcmp(term->config, "config2"));
 
+	/* config3=4 */
+	term = list_entry(term->list.next, struct parse_events_term, list);
+	TEST_ASSERT_VAL("wrong type term",
+			term->type_term == PARSE_EVENTS__TERM_TYPE_CONFIG3);
+	TEST_ASSERT_VAL("wrong type val",
+			term->type_val == PARSE_EVENTS__TERM_TYPE_NUM);
+	TEST_ASSERT_VAL("wrong val", term->val.num == 4);
+	TEST_ASSERT_VAL("wrong config", !strcmp(term->config, "config3"));
+
 	/* umask=1*/
 	term = list_entry(term->list.next, struct parse_events_term, list);
 	TEST_ASSERT_VAL("wrong type term",
@@ -1983,7 +1994,7 @@ struct terms_test {
 
 static const struct terms_test test__terms[] = {
 	[0] = {
-		.str   = "config=10,config1,config2=3,umask=1,read,r0xead",
+		.str   = "config=10,config1,config2=3,config3=4,umask=1,read,r0xead",
 		.check = test__checkterms_simple,
 	},
 };
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 5973f46c2375..a2ae92736aac 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -944,6 +944,7 @@ static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
 	[PARSE_EVENTS__TERM_TYPE_CONFIG]		= "config",
 	[PARSE_EVENTS__TERM_TYPE_CONFIG1]		= "config1",
 	[PARSE_EVENTS__TERM_TYPE_CONFIG2]		= "config2",
+	[PARSE_EVENTS__TERM_TYPE_CONFIG3]		= "config3",
 	[PARSE_EVENTS__TERM_TYPE_NAME]			= "name",
 	[PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD]		= "period",
 	[PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ]		= "freq",
@@ -983,6 +984,7 @@ config_term_avail(int term_type, struct parse_events_error *err)
 	case PARSE_EVENTS__TERM_TYPE_CONFIG:
 	case PARSE_EVENTS__TERM_TYPE_CONFIG1:
 	case PARSE_EVENTS__TERM_TYPE_CONFIG2:
+	case PARSE_EVENTS__TERM_TYPE_CONFIG3:
 	case PARSE_EVENTS__TERM_TYPE_NAME:
 	case PARSE_EVENTS__TERM_TYPE_METRIC_ID:
 	case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
@@ -1028,6 +1030,10 @@ do {									   \
 		CHECK_TYPE_VAL(NUM);
 		attr->config2 = term->val.num;
 		break;
+	case PARSE_EVENTS__TERM_TYPE_CONFIG3:
+		CHECK_TYPE_VAL(NUM);
+		attr->config3 = term->val.num;
+		break;
 	case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
 		CHECK_TYPE_VAL(NUM);
 		break;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 07df7bb7b042..34db4870a56b 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -60,6 +60,7 @@ enum {
 	PARSE_EVENTS__TERM_TYPE_CONFIG,
 	PARSE_EVENTS__TERM_TYPE_CONFIG1,
 	PARSE_EVENTS__TERM_TYPE_CONFIG2,
+	PARSE_EVENTS__TERM_TYPE_CONFIG3,
 	PARSE_EVENTS__TERM_TYPE_NAME,
 	PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
 	PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ,
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 3a9ce96c8bce..51fe0a9fb3de 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -285,6 +285,7 @@ modifier_bp	[rwx]{1,3}
 config			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
 config1			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
 config2			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
+config3			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG3); }
 name			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
 period			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
 freq			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 03284059175f..2d9a0c35c6c3 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1278,6 +1278,9 @@ static int pmu_config_term(const char *pmu_name,
 	case PERF_PMU_FORMAT_VALUE_CONFIG2:
 		vp = &attr->config2;
 		break;
+	case PERF_PMU_FORMAT_VALUE_CONFIG3:
+		vp = &attr->config3;
+		break;
 	default:
 		return -EINVAL;
 	}
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 68e15c38ae71..2e6bd1bf304a 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -17,6 +17,7 @@ enum {
 	PERF_PMU_FORMAT_VALUE_CONFIG,
 	PERF_PMU_FORMAT_VALUE_CONFIG1,
 	PERF_PMU_FORMAT_VALUE_CONFIG2,
+	PERF_PMU_FORMAT_VALUE_CONFIG3,
 	PERF_PMU_FORMAT_VALUE_CONFIG_END,
 };
 

-- 
2.39.1