diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2021-10-26 16:29:13 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-10-27 18:20:29 -0700 |
| commit | 5823fc96d754d824bb298622055e8dd5e1252122 (patch) | |
| tree | 4580981d96cdbb330324800e1ba98989a7ec0c2f /include/net/sock.h | |
| parent | 9dfc685e0262d4c5e44e13302f89841fa75173ca (diff) | |
| download | linux-5823fc96d754d824bb298622055e8dd5e1252122.tar.gz | |
tcp: define macros for a couple reclaim thresholds
A following patch is going to implement a similar reclaim schema
for the MPTCP protocol, with different locking.
Let's define a couple of macros for the used thresholds, so
that the latter code will be more easily maintainable.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index ff4e62aa62e51a..df0e0efb18826a 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1573,6 +1573,11 @@ static inline void sk_mem_charge(struct sock *sk, int size) sk->sk_forward_alloc -= size; } +/* the following macros control memory reclaiming in sk_mem_uncharge() + */ +#define SK_RECLAIM_THRESHOLD (1 << 21) +#define SK_RECLAIM_CHUNK (1 << 20) + static inline void sk_mem_uncharge(struct sock *sk, int size) { int reclaimable; @@ -1589,8 +1594,8 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) * If we reach 2 MBytes, reclaim 1 MBytes right now, there is * no need to hold that much forward allocation anyway. */ - if (unlikely(reclaimable >= 1 << 21)) - __sk_mem_reclaim(sk, 1 << 20); + if (unlikely(reclaimable >= SK_RECLAIM_THRESHOLD)) + __sk_mem_reclaim(sk, SK_RECLAIM_CHUNK); } static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) |