diff mbox series

[ndctl] cxl/test: use max_available_extent in cxl-destroy-region

Message ID 20240327184642.2181254-1-alison.schofield@intel.com (mailing list archive)
State Superseded
Headers show
Series [ndctl] cxl/test: use max_available_extent in cxl-destroy-region | expand

Commit Message

Alison Schofield March 27, 2024, 6:46 p.m. UTC
From: Alison Schofield <alison.schofield@intel.com>

Using .size in decoder selection can lead to a set_size failure with
these error messages:

cxl region: create_region: region8: set_size failed: Numerical result out of range

[] cxl_core:alloc_hpa:555: cxl region8: HPA allocation error (-34) for size:0x0000000020000000 in CXL Window 0 [mem 0xf010000000-0xf04fffffff flags 0x200]

Use max_available_extent for decoder selection instead.

The test overlooked the region creation failure because it used a
not 'null' comparison which always succeeds. Use the ! comparator
after create-region and for the ramsize check so that the test fails
or continues as expected.

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
---
 test/cxl-destroy-region.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)


base-commit: e0d0680bd3e554bd5f211e989480c5a13a023b2d

Comments

Verma, Vishal L April 22, 2024, 5:07 p.m. UTC | #1
On Wed, 2024-03-27 at 11:46 -0700, alison.schofield@intel.com wrote:
> From: Alison Schofield <alison.schofield@intel.com>
> 
> Using .size in decoder selection can lead to a set_size failure with
> these error messages:
> 
> cxl region: create_region: region8: set_size failed: Numerical result out of range
> 
> [] cxl_core:alloc_hpa:555: cxl region8: HPA allocation error (-34) for size:0x0000000020000000 in CXL Window 0 [mem 0xf010000000-0xf04fffffff flags 0x200]
> 
> Use max_available_extent for decoder selection instead.
> 
> The test overlooked the region creation failure because it used a
> not 'null' comparison which always succeeds. Use the ! comparator
> after create-region and for the ramsize check so that the test fails
> or continues as expected.
> 
> Signed-off-by: Alison Schofield <alison.schofield@intel.com>
> ---
>  test/cxl-destroy-region.sh | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/test/cxl-destroy-region.sh b/test/cxl-destroy-region.sh
> index cf0a46d6ba58..167fcc4a7ff9 100644
> --- a/test/cxl-destroy-region.sh
> +++ b/test/cxl-destroy-region.sh
> @@ -22,7 +22,7 @@ check_destroy_ram()
>  	decoder=$2
>  
>  	region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
> -	if [ "$region" == "null" ]; then
> +	if [[ ! $region ]]; then
>  		err "$LINENO"
>  	fi
>  	"$CXL" enable-region "$region"
> @@ -38,7 +38,7 @@ check_destroy_devdax()
>  	decoder=$2
>  
>  	region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
> -	if [ "$region" == "null" ]; then
> +	if [[ ! $region ]]; then

While these ! $region changes are correct (because cxl create-region)
doesn't output any json if creation fails)..

>  		err "$LINENO"
>  	fi
>  	"$CXL" enable-region "$region"
> @@ -55,14 +55,14 @@ check_destroy_devdax()
>  readarray -t mems < <("$CXL" list -b "$CXL_TEST_BUS" -M | jq -r '.[].memdev')
>  for mem in "${mems[@]}"; do
>          ramsize="$("$CXL" list -m "$mem" | jq -r '.[].ram_size')"
> -        if [[ $ramsize == "null" ]]; then
> +        if [[ ! $ramsize ]]; then

.. I think this check needs to check for both empty and "null" - a
memdev that doesn't have ram_size but otherwise emits valid json will
result in "null" here. e.g.:

  $ echo "" | jq -r ".region"

  $ echo "{ }" | jq -r ".region"
  null

So this probably wants to be:

  if [[ $ramsize == "null" || ! $ram_size ]]; then
  ...


>                  continue
>          fi
>          decoder="$("$CXL" list -b "$CXL_TEST_BUS" -D -d root -m "$mem" |
>                    jq -r ".[] |
>                    select(.volatile_capable == true) |
>                    select(.nr_targets == 1) |
> -                  select(.size >= ${ramsize}) |
> +                  select(.max_available_extent >= ${ramsize}) |
>                    .decoder")"
>          if [[ $decoder ]]; then
>  		check_destroy_ram "$mem" "$decoder"
> 
> base-commit: e0d0680bd3e554bd5f211e989480c5a13a023b2d
Alison Schofield April 22, 2024, 8:43 p.m. UTC | #2
On Mon, Apr 22, 2024 at 10:07:58AM -0700, Vishal Verma wrote:
> On Wed, 2024-03-27 at 11:46 -0700, alison.schofield@intel.com wrote:
> > From: Alison Schofield <alison.schofield@intel.com>
> >
> > Using .size in decoder selection can lead to a set_size failure with
> > these error messages:
> >
> > cxl region: create_region: region8: set_size failed: Numerical result out of range
> >
> > [] cxl_core:alloc_hpa:555: cxl region8: HPA allocation error (-34) for size:0x0000000020000000 in CXL Window 0 [mem 0xf010000000-0xf04fffffff flags 0x200]
> >
> > Use max_available_extent for decoder selection instead.
> >
> > The test overlooked the region creation failure because it used a
> > not 'null' comparison which always succeeds. Use the ! comparator
> > after create-region and for the ramsize check so that the test fails
> > or continues as expected.
> >
> > Signed-off-by: Alison Schofield <alison.schofield@intel.com>
> > ---
> >  test/cxl-destroy-region.sh | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/test/cxl-destroy-region.sh b/test/cxl-destroy-region.sh
> > index cf0a46d6ba58..167fcc4a7ff9 100644
> > --- a/test/cxl-destroy-region.sh
> > +++ b/test/cxl-destroy-region.sh
> > @@ -22,7 +22,7 @@ check_destroy_ram()
> >       decoder=$2
> >
> >       region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
> > -     if [ "$region" == "null" ]; then
> > +     if [[ ! $region ]]; then
> >               err "$LINENO"
> >       fi
> >       "$CXL" enable-region "$region"
> > @@ -38,7 +38,7 @@ check_destroy_devdax()
> >       decoder=$2
> >
> >       region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
> > -     if [ "$region" == "null" ]; then
> > +     if [[ ! $region ]]; then
> 
> While these ! $region changes are correct (because cxl create-region)
> doesn't output any json if creation fails)..
> 
> >               err "$LINENO"
> >       fi
> >       "$CXL" enable-region "$region"
> > @@ -55,14 +55,14 @@ check_destroy_devdax()
> >  readarray -t mems < <("$CXL" list -b "$CXL_TEST_BUS" -M | jq -r '.[].memdev')
> >  for mem in "${mems[@]}"; do
> >          ramsize="$("$CXL" list -m "$mem" | jq -r '.[].ram_size')"
> > -        if [[ $ramsize == "null" ]]; then
> > +        if [[ ! $ramsize ]]; then
> 
> .. I think this check needs to check for both empty and "null" - a
> memdev that doesn't have ram_size but otherwise emits valid json will
> result in "null" here. e.g.:
> 
>   $ echo "" | jq -r ".region"
> 
>   $ echo "{ }" | jq -r ".region"
>   null
> 
> So this probably wants to be:
> 
>   if [[ $ramsize == "null" || ! $ram_size ]]; then
>   ...
> 

I see now!  Thanks Vishal.

-- Alison
diff mbox series

Patch

diff --git a/test/cxl-destroy-region.sh b/test/cxl-destroy-region.sh
index cf0a46d6ba58..167fcc4a7ff9 100644
--- a/test/cxl-destroy-region.sh
+++ b/test/cxl-destroy-region.sh
@@ -22,7 +22,7 @@  check_destroy_ram()
 	decoder=$2
 
 	region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
-	if [ "$region" == "null" ]; then
+	if [[ ! $region ]]; then
 		err "$LINENO"
 	fi
 	"$CXL" enable-region "$region"
@@ -38,7 +38,7 @@  check_destroy_devdax()
 	decoder=$2
 
 	region="$("$CXL" create-region -d "$decoder" -m "$mem" | jq -r ".region")"
-	if [ "$region" == "null" ]; then
+	if [[ ! $region ]]; then
 		err "$LINENO"
 	fi
 	"$CXL" enable-region "$region"
@@ -55,14 +55,14 @@  check_destroy_devdax()
 readarray -t mems < <("$CXL" list -b "$CXL_TEST_BUS" -M | jq -r '.[].memdev')
 for mem in "${mems[@]}"; do
         ramsize="$("$CXL" list -m "$mem" | jq -r '.[].ram_size')"
-        if [[ $ramsize == "null" ]]; then
+        if [[ ! $ramsize ]]; then
                 continue
         fi
         decoder="$("$CXL" list -b "$CXL_TEST_BUS" -D -d root -m "$mem" |
                   jq -r ".[] |
                   select(.volatile_capable == true) |
                   select(.nr_targets == 1) |
-                  select(.size >= ${ramsize}) |
+                  select(.max_available_extent >= ${ramsize}) |
                   .decoder")"
         if [[ $decoder ]]; then
 		check_destroy_ram "$mem" "$decoder"