[PATCH v2 0/2] minor fixes for perf cs-etm

[PATCH v2 0/2] minor fixes for perf cs-etm

[Yue Haibing]

From: YueHaibing <yuehaibing@huawei.com>

v2:
- patch 1 fix commilt log
- patch 2 use correct Fixes tag

This patch series fixes two issue:
1. fix pass-zero-to-ERR_PTR warning
2. return correct errcode to upstream callers

YueHaibing (2):
  perf cs-etm: Remove errnoeous ERR_PTR() usage in in
    cs_etm__process_auxtrace_info
  perf cs-etm: return errcode in cs_etm__process_auxtrace_info()

 tools/perf/util/cs-etm.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

-- 
2.7.0

[PATCH v2 1/2] perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info

[Yue Haibing]

From: YueHaibing <yuehaibing@huawei.com>

intlist__findnew() doesn't uses ERR_PTR() as a return mechanism
so its callers shouldn't try to extract the error using PTR_ERR(
ret) from intlist__findnew(), make cs_etm__process_auxtrace_info
return -ENOMEM instead.

Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 tools/perf/util/cs-etm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 1108049..fd7f1da 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -1908,7 +1908,7 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 
 		/* Something went wrong, no need to continue */
 		if (!inode) {
-			err = PTR_ERR(inode);
+			err = -ENOMEM;
 			goto err_free_metadata;
 		}
 
-- 
2.7.0

[PATCH v2 2/2] perf cs-etm: return errcode in cs_etm__process_auxtrace_info()

[Yue Haibing]

From: YueHaibing <yuehaibing@huawei.com>

'err' is set in err path, but it's not returned to callers.
Don't always return -EINVAL, return err.

Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 tools/perf/util/cs-etm.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index fd7f1da..2cc773a 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -1965,8 +1965,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	session->auxtrace = &etm->auxtrace;
 
 	etm->unknown_thread = thread__new(999999999, 999999999);
-	if (!etm->unknown_thread)
+	if (!etm->unknown_thread) {
+		err = -ENOMEM;
 		goto err_free_queues;
+	}
 
 	/*
 	 * Initialize list node so that at thread__zput() we can avoid
@@ -1978,8 +1980,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	if (err)
 		goto err_delete_thread;
 
-	if (thread__init_map_groups(etm->unknown_thread, etm->machine))
+	if (thread__init_map_groups(etm->unknown_thread, etm->machine)) {
+		err = -ENOMEM;
 		goto err_delete_thread;
+	}
 
 	if (dump_trace) {
 		cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
@@ -2023,5 +2027,5 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 err_free_hdr:
 	zfree(&hdr);
 
-	return -EINVAL;
+	return err;
 }
-- 
2.7.0

Re: [PATCH v2 1/2] perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info

[Mathieu Poirier]

On Wed, 20 Mar 2019 at 20:31, Yue Haibing <yuehaibing@huawei.com> wrote:
>
> From: YueHaibing <yuehaibing@huawei.com>
>
> intlist__findnew() doesn't uses ERR_PTR() as a return mechanism
> so its callers shouldn't try to extract the error using PTR_ERR(
> ret) from intlist__findnew(), make cs_etm__process_auxtrace_info
> return -ENOMEM instead.
>
> Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>  tools/perf/util/cs-etm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> index 1108049..fd7f1da 100644
> --- a/tools/perf/util/cs-etm.c
> +++ b/tools/perf/util/cs-etm.c
> @@ -1908,7 +1908,7 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
>
>                 /* Something went wrong, no need to continue */
>                 if (!inode) {
> -                       err = PTR_ERR(inode);
> +                       err = -ENOMEM;
>                         goto err_free_metadata;
>                 }
>
> --
> 2.7.0

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Arnaldo, please consider adding to your tally.

>
>

Re: [PATCH v2 2/2] perf cs-etm: return errcode in cs_etm__process_auxtrace_info()

[Mathieu Poirier]

On Wed, 20 Mar 2019 at 20:32, Yue Haibing <yuehaibing@huawei.com> wrote:
>
> From: YueHaibing <yuehaibing@huawei.com>
>
> 'err' is set in err path, but it's not returned to callers.
> Don't always return -EINVAL, return err.
>
> Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>  tools/perf/util/cs-etm.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> index fd7f1da..2cc773a 100644
> --- a/tools/perf/util/cs-etm.c
> +++ b/tools/perf/util/cs-etm.c
> @@ -1965,8 +1965,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
>         session->auxtrace = &etm->auxtrace;
>
>         etm->unknown_thread = thread__new(999999999, 999999999);
> -       if (!etm->unknown_thread)
> +       if (!etm->unknown_thread) {
> +               err = -ENOMEM;
>                 goto err_free_queues;
> +       }
>
>         /*
>          * Initialize list node so that at thread__zput() we can avoid
> @@ -1978,8 +1980,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
>         if (err)
>                 goto err_delete_thread;
>
> -       if (thread__init_map_groups(etm->unknown_thread, etm->machine))
> +       if (thread__init_map_groups(etm->unknown_thread, etm->machine)) {
> +               err = -ENOMEM;
>                 goto err_delete_thread;
> +       }
>
>         if (dump_trace) {
>                 cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
> @@ -2023,5 +2027,5 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
>  err_free_hdr:
>         zfree(&hdr);
>
> -       return -EINVAL;
> +       return err;
>  }
> --
> 2.7.0

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Same here Arnaldo, please consider.

>
>

Re: [PATCH v2 0/2] minor fixes for perf cs-etm

[Yuehaibing]

Hi,

Friendly ping:

Arnaldo, will you take this serial?

On 2019/3/21 10:31, Yue Haibing wrote:
> From: YueHaibing <yuehaibing@huawei.com>
> 
> v2:
> - patch 1 fix commilt log
> - patch 2 use correct Fixes tag
> 
> This patch series fixes two issue:
> 1. fix pass-zero-to-ERR_PTR warning
> 2. return correct errcode to upstream callers
> 
> YueHaibing (2):
>   perf cs-etm: Remove errnoeous ERR_PTR() usage in in
>     cs_etm__process_auxtrace_info
>   perf cs-etm: return errcode in cs_etm__process_auxtrace_info()
> 
>  tools/perf/util/cs-etm.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 

Re: [PATCH v2 0/2] minor fixes for perf cs-etm

[Yuehaibing]

Arnaldo, can you pick this?

On 2019/6/4 16:50, Yuehaibing wrote:
> Hi,
> 
> Friendly ping:
> 
> Arnaldo, will you take this serial?
> 
> On 2019/3/21 10:31, Yue Haibing wrote:
>> From: YueHaibing <yuehaibing@huawei.com>
>>
>> v2:
>> - patch 1 fix commilt log
>> - patch 2 use correct Fixes tag
>>
>> This patch series fixes two issue:
>> 1. fix pass-zero-to-ERR_PTR warning
>> 2. return correct errcode to upstream callers
>>
>> YueHaibing (2):
>>   perf cs-etm: Remove errnoeous ERR_PTR() usage in in
>>     cs_etm__process_auxtrace_info
>>   perf cs-etm: return errcode in cs_etm__process_auxtrace_info()
>>
>>  tools/perf/util/cs-etm.c | 12 ++++++++----
>>  1 file changed, 8 insertions(+), 4 deletions(-)
>>
> 
> 
> .
> 

Re: [PATCH v2 0/2] minor fixes for perf cs-etm

[Arnaldo Carvalho de Melo]

Em Thu, Jul 11, 2019 at 10:33:09PM +0800, Yuehaibing escreveu:
> 
> Arnaldo, can you pick this?
 

Thanks, and sorry for the delay, fell thru the cracks.

- Arnaldo

[tip:perf/urgent] perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info

[tip-bot for YueHaibing]

Commit-ID:  edc82a99437a93c36b0ae18eb6daac0097fc6bd3
Gitweb:     https://git.kernel.org/tip/edc82a99437a93c36b0ae18eb6daac0097fc6bd3
Author:     YueHaibing <yuehaibing@huawei.com>
AuthorDate: Thu, 21 Mar 2019 10:31:21 +0800
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 11 Jul 2019 12:42:46 -0300

perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info

intlist__findnew() doesn't uses ERR_PTR() as a return mechanism
so its callers shouldn't try to extract the error using PTR_ERR(
ret) from intlist__findnew(), make cs_etm__process_auxtrace_info
return -ENOMEM instead.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
Link: http://lkml.kernel.org/r/20190321023122.21332-2-yuehaibing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/cs-etm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 67b88b599a53..2e9f5bc45550 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2460,7 +2460,7 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 
 		/* Something went wrong, no need to continue */
 		if (!inode) {
-			err = PTR_ERR(inode);
+			err = -ENOMEM;
 			goto err_free_metadata;
 		}
 

[tip:perf/urgent] perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()

[tip-bot for YueHaibing]

Commit-ID:  6285bd151b95aa28d6de9b8b9249702681f059d2
Gitweb:     https://git.kernel.org/tip/6285bd151b95aa28d6de9b8b9249702681f059d2
Author:     YueHaibing <yuehaibing@huawei.com>
AuthorDate: Thu, 21 Mar 2019 10:31:22 +0800
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 11 Jul 2019 12:45:02 -0300

perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()

The 'err' variable is set in the error path, but it's not returned to
callers.  Don't always return -EINVAL, return err.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
Link: http://lkml.kernel.org/r/20190321023122.21332-3-yuehaibing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/cs-etm.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 2e9f5bc45550..3d1c34fc4d68 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2517,8 +2517,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	session->auxtrace = &etm->auxtrace;
 
 	etm->unknown_thread = thread__new(999999999, 999999999);
-	if (!etm->unknown_thread)
+	if (!etm->unknown_thread) {
+		err = -ENOMEM;
 		goto err_free_queues;
+	}
 
 	/*
 	 * Initialize list node so that at thread__zput() we can avoid
@@ -2530,8 +2532,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	if (err)
 		goto err_delete_thread;
 
-	if (thread__init_map_groups(etm->unknown_thread, etm->machine))
+	if (thread__init_map_groups(etm->unknown_thread, etm->machine)) {
+		err = -ENOMEM;
 		goto err_delete_thread;
+	}
 
 	if (dump_trace) {
 		cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
@@ -2575,5 +2579,5 @@ err_free_traceid_list:
 err_free_hdr:
 	zfree(&hdr);
 
-	return -EINVAL;
+	return err;
 }