diff mbox series

[v3] usertools: show valid hugepage sizes if user requests an invalid hugepage size

Message ID 20210210061605.30648-1-sarosh.arif@emumba.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show
Series [v3] usertools: show valid hugepage sizes if user requests an invalid hugepage size | expand

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/iol-mellanox-Functional success Functional Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-testing warning Testing issues
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/intel-Testing success Testing PASS
ci/Intel-compilation success Compilation OK

Commit Message

Sarosh Arif Feb. 10, 2021, 6:16 a.m. UTC
If user requests a hugepage size which is not supported by the system,
currently user gets an error message saying that the requested size
is not a valid system huge page size. In addition to this if we display
the valid hugepage sizes it will be convenient for the user to request
the right size next time.

Signed-off-by: Sarosh Arif <sarosh.arif@emumba.com>
---
v2:
pass string in sys.exit() to remove pylint warning
v3:
modify get_valid_page_sizes() 
---

 usertools/dpdk-hugepages.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

Comments

Anatoly Burakov Feb. 10, 2021, 5:41 p.m. UTC | #1
On 10-Feb-21 6:16 AM, Sarosh Arif wrote:
> If user requests a hugepage size which is not supported by the system,
> currently user gets an error message saying that the requested size
> is not a valid system huge page size. In addition to this if we display
> the valid hugepage sizes it will be convenient for the user to request
> the right size next time.
> 
> Signed-off-by: Sarosh Arif <sarosh.arif@emumba.com>
> ---
> v2:
> pass string in sys.exit() to remove pylint warning
> v3:
> modify get_valid_page_sizes()
> ---
> 
>   usertools/dpdk-hugepages.py | 11 ++++++++---
>   1 file changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/usertools/dpdk-hugepages.py b/usertools/dpdk-hugepages.py
> index 70432f9cd..57ae9f391 100755
> --- a/usertools/dpdk-hugepages.py
> +++ b/usertools/dpdk-hugepages.py
> @@ -43,6 +43,12 @@ def is_numa():
>       return os.path.exists('/sys/devices/system/node')
>   
>   
> +def get_valid_page_sizes(path):
> +    '''Extract valid hugepage sizes'''
> +    dir = os.path.dirname(path)
> +    pg_sizes = (d.split("-")[1] for d in os.listdir(dir))
> +    return " ".join(pg_sizes)
> +
>   def get_hugepages(path):
>       '''Read number of reserved pages'''
>       with open(path + '/nr_hugepages') as nr_hugepages:
> @@ -59,9 +65,8 @@ def set_hugepages(path, pages):
>       except PermissionError:
>           sys.exit('Permission denied: need to be root!')
>       except FileNotFoundError:
> -        filename = os.path.basename(path)
> -        size = filename[10:]
> -        sys.exit('{} is not a valid system huge page size'.format(size))
> +        sys.exit("Invalid page size. Valid page sizes: {}".format(
> +                                get_valid_page_sizes(path)))

Nitpicking, but i think this indentation wouldn't be OK with a PEP-8 
style checker. This should be better:

sys.exit("Invalid page size. Valid page sizes: {}"
          .format(get_validpage_sizes(path))

(note the alignment of .format with the quote)

Otherwise, LGTM

Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

>       if get_hugepages(path) != pages:
>           sys.exit('Unable to reserve required pages.')
>   
>
diff mbox series

Patch

diff --git a/usertools/dpdk-hugepages.py b/usertools/dpdk-hugepages.py
index 70432f9cd..57ae9f391 100755
--- a/usertools/dpdk-hugepages.py
+++ b/usertools/dpdk-hugepages.py
@@ -43,6 +43,12 @@  def is_numa():
     return os.path.exists('/sys/devices/system/node')
 
 
+def get_valid_page_sizes(path):
+    '''Extract valid hugepage sizes'''
+    dir = os.path.dirname(path)
+    pg_sizes = (d.split("-")[1] for d in os.listdir(dir))
+    return " ".join(pg_sizes)
+
 def get_hugepages(path):
     '''Read number of reserved pages'''
     with open(path + '/nr_hugepages') as nr_hugepages:
@@ -59,9 +65,8 @@  def set_hugepages(path, pages):
     except PermissionError:
         sys.exit('Permission denied: need to be root!')
     except FileNotFoundError:
-        filename = os.path.basename(path)
-        size = filename[10:]
-        sys.exit('{} is not a valid system huge page size'.format(size))
+        sys.exit("Invalid page size. Valid page sizes: {}".format(
+                                get_valid_page_sizes(path)))
     if get_hugepages(path) != pages:
         sys.exit('Unable to reserve required pages.')