diff mbox series

[2/3] perf arm-spe: Save context ID in record

Message ID 20211102180739.18049-3-german.gomez@arm.com (mailing list archive)
State New, archived
Headers show
Series perf arm-spe: Track pid/tid for Arm SPE samples | expand

Commit Message

German Gomez Nov. 2, 2021, 6:07 p.m. UTC 
This patch is to save context ID in record, this will be used to set TID
for samples.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: German Gomez <german.gomez@arm.com>
---
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 ++
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 +
 2 files changed, 3 insertions(+)

Comments

Leo Yan Nov. 6, 2021, 3:32 a.m. UTC | #1 
On Tue, Nov 02, 2021 at 06:07:38PM +0000, German Gomez wrote:
> This patch is to save context ID in record, this will be used to set TID
> for samples.
> 
> Signed-off-by: Leo Yan <leo.yan@linaro.org>
> Signed-off-by: James Clark <james.clark@arm.com>
> Signed-off-by: German Gomez <german.gomez@arm.com>

Reviewed-by: Leo Yan <leo.yan@linaro.org>

> ---
>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 ++
>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 +
>  2 files changed, 3 insertions(+)
> 
> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> index 32fe41835..1b58859d2 100644
> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> @@ -151,6 +151,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>  	u64 payload, ip;
>  
>  	memset(&decoder->record, 0x0, sizeof(decoder->record));
> +	decoder->record.context_id = -1;
>  
>  	while (1) {
>  		err = arm_spe_get_next_packet(decoder);
> @@ -180,6 +181,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>  		case ARM_SPE_COUNTER:
>  			break;
>  		case ARM_SPE_CONTEXT:
> +			decoder->record.context_id = payload;
>  			break;
>  		case ARM_SPE_OP_TYPE:
>  			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> index 59bdb7309..46a8556a9 100644
> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> @@ -38,6 +38,7 @@ struct arm_spe_record {
>  	u64 timestamp;
>  	u64 virt_addr;
>  	u64 phys_addr;
> +	u64 context_id;
>  };
>  
>  struct arm_spe_insn;
> -- 
> 2.25.1
>
Leo Yan Nov. 6, 2021, 1:47 p.m. UTC | #2 
On Tue, Nov 02, 2021 at 06:07:38PM +0000, German Gomez wrote:
> This patch is to save context ID in record, this will be used to set TID
> for samples.
> 
> Signed-off-by: Leo Yan <leo.yan@linaro.org>
> Signed-off-by: James Clark <james.clark@arm.com>
> Signed-off-by: German Gomez <german.gomez@arm.com>
> ---
>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 ++
>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 +
>  2 files changed, 3 insertions(+)
> 
> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> index 32fe41835..1b58859d2 100644
> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> @@ -151,6 +151,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>  	u64 payload, ip;
>  
>  	memset(&decoder->record, 0x0, sizeof(decoder->record));
> +	decoder->record.context_id = -1;

Since 'context_id' is type u64, here it's good to assign '(u64)-1'.

>  	while (1) {
>  		err = arm_spe_get_next_packet(decoder);
> @@ -180,6 +181,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>  		case ARM_SPE_COUNTER:
>  			break;
>  		case ARM_SPE_CONTEXT:
> +			decoder->record.context_id = payload;
>  			break;
>  		case ARM_SPE_OP_TYPE:
>  			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> index 59bdb7309..46a8556a9 100644
> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
> @@ -38,6 +38,7 @@ struct arm_spe_record {
>  	u64 timestamp;
>  	u64 virt_addr;
>  	u64 phys_addr;
> +	u64 context_id;
>  };
>  
>  struct arm_spe_insn;
> -- 
> 2.25.1
>
German Gomez Nov. 9, 2021, 10:41 a.m. UTC | #3 
On 06/11/2021 13:47, Leo Yan wrote:
> On Tue, Nov 02, 2021 at 06:07:38PM +0000, German Gomez wrote:
>> This patch is to save context ID in record, this will be used to set TID
>> for samples.
>>
>> Signed-off-by: Leo Yan <leo.yan@linaro.org>
>> Signed-off-by: James Clark <james.clark@arm.com>
>> Signed-off-by: German Gomez <german.gomez@arm.com>
>> ---
>>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 2 ++
>>  tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 1 +
>>  2 files changed, 3 insertions(+)
>>
>> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
>> index 32fe41835..1b58859d2 100644
>> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
>> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
>> @@ -151,6 +151,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>>  	u64 payload, ip;
>>  
>>  	memset(&decoder->record, 0x0, sizeof(decoder->record));
>> +	decoder->record.context_id = -1;
> Since 'context_id' is type u64, here it's good to assign '(u64)-1'.

Ack.

Thanks,
German

>
>>  	while (1) {
>>  		err = arm_spe_get_next_packet(decoder);
>> @@ -180,6 +181,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
>>  		case ARM_SPE_COUNTER:
>>  			break;
>>  		case ARM_SPE_CONTEXT:
>> +			decoder->record.context_id = payload;
>>  			break;
>>  		case ARM_SPE_OP_TYPE:
>>  			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
>> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
>> index 59bdb7309..46a8556a9 100644
>> --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
>> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
>> @@ -38,6 +38,7 @@ struct arm_spe_record {
>>  	u64 timestamp;
>>  	u64 virt_addr;
>>  	u64 phys_addr;
>> +	u64 context_id;
>>  };
>>  
>>  struct arm_spe_insn;
>> -- 
>> 2.25.1
>>
diff mbox series

Patch

diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
index 32fe41835..1b58859d2 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -151,6 +151,7 @@  static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 	u64 payload, ip;
 
 	memset(&decoder->record, 0x0, sizeof(decoder->record));
+	decoder->record.context_id = -1;
 
 	while (1) {
 		err = arm_spe_get_next_packet(decoder);
@@ -180,6 +181,7 @@  static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 		case ARM_SPE_COUNTER:
 			break;
 		case ARM_SPE_CONTEXT:
+			decoder->record.context_id = payload;
 			break;
 		case ARM_SPE_OP_TYPE:
 			if (idx == SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC) {
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
index 59bdb7309..46a8556a9 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
@@ -38,6 +38,7 @@  struct arm_spe_record {
 	u64 timestamp;
 	u64 virt_addr;
 	u64 phys_addr;
+	u64 context_id;
 };
 
 struct arm_spe_insn;