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| author | Joe Damato <jdamato@fastly.com> | 2022-03-02 08:55:48 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-03 10:55:28 +0100 |
| commit | ad6fa1e1ab1b8164f1ba296b1b4dc556a483bcad (patch) | |
| tree | b6d7fe2b361eb191e1df90be5980fbbd7e112c90 /include/net/page_pool.h | |
| parent | page_pool: Add allocation stats (diff) | |
| download | linux-ad6fa1e1ab1b8164f1ba296b1b4dc556a483bcad.tar.xz linux-ad6fa1e1ab1b8164f1ba296b1b4dc556a483bcad.zip | |
page_pool: Add recycle stats
Add per-cpu stats tracking page pool recycling events:
- cached: recycling placed page in the page pool cache
- cache_full: page pool cache was full
- ring: page placed into the ptr ring
- ring_full: page released from page pool because the ptr ring was full
- released_refcnt: page released (and not recycled) because refcnt > 1
Signed-off-by: Joe Damato <jdamato@fastly.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/page_pool.h')
| -rw-r--r-- | include/net/page_pool.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/net/page_pool.h b/include/net/page_pool.h index 1f27e8a48830..298af95bbf96 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -95,6 +95,18 @@ struct page_pool_alloc_stats { u64 refill; /* allocations via successful refill */ u64 waive; /* failed refills due to numa zone mismatch */ }; + +struct page_pool_recycle_stats { + u64 cached; /* recycling placed page in the cache. */ + u64 cache_full; /* cache was full */ + u64 ring; /* recycling placed page back into ptr ring */ + u64 ring_full; /* page was released from page-pool because + * PTR ring was full. + */ + u64 released_refcnt; /* page released because of elevated + * refcnt + */ +}; #endif struct page_pool { @@ -144,6 +156,10 @@ struct page_pool { */ struct ptr_ring ring; +#ifdef CONFIG_PAGE_POOL_STATS + /* recycle stats are per-cpu to avoid locking */ + struct page_pool_recycle_stats __percpu *recycle_stats; +#endif atomic_t pages_state_release_cnt; /* A page_pool is strictly tied to a single RX-queue being |