diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-11-27 00:07:37 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-11-28 15:48:39 +0100 |
| commit | 69cb4952b6f6a226c1c0a7ca400398aaa8f75cf2 (patch) | |
| tree | bb1f869ffd9a3ee34f17db0b5111e327d8e17541 /Documentation/netlink | |
| parent | net: page_pool: report amount of memory held by page pools (diff) | |
| download | linux-69cb4952b6f6a226c1c0a7ca400398aaa8f75cf2.tar.xz linux-69cb4952b6f6a226c1c0a7ca400398aaa8f75cf2.zip | |
net: page_pool: report when page pool was destroyed
Report when page pool was destroyed. Together with the inflight
/ memory use reporting this can serve as a replacement for the
warning about leaked page pools we currently print to dmesg.
Example output for a fake leaked page pool using some hacks
in netdevsim (one "live" pool, and one "leaked" on the same dev):
$ ./cli.py --no-schema --spec netlink/specs/netdev.yaml \
--dump page-pool-get
[{'id': 2, 'ifindex': 3},
{'id': 1, 'ifindex': 3, 'destroyed': 133, 'inflight': 1}]
Tested-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'Documentation/netlink')
| -rw-r--r-- | Documentation/netlink/specs/netdev.yaml | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml index b76623ff2932..b5f715cf9e06 100644 --- a/Documentation/netlink/specs/netdev.yaml +++ b/Documentation/netlink/specs/netdev.yaml @@ -127,6 +127,18 @@ attribute-sets: type: uint doc: | Amount of memory held by inflight pages. + - + name: detach-time + type: uint + doc: | + Seconds in CLOCK_BOOTTIME of when Page Pool was detached by + the driver. Once detached Page Pool can no longer be used to + allocate memory. + Page Pools wait for all the memory allocated from them to be freed + before truly disappearing. "Detached" Page Pools cannot be + "re-attached", they are just waiting to disappear. + Attribute is absent if Page Pool has not been detached, and + can still be used to allocate new memory. operations: list: @@ -178,6 +190,7 @@ operations: - napi-id - inflight - inflight-mem + - detach-time dump: reply: *pp-reply config-cond: page-pool |