diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-06-30 09:35:39 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-02 14:22:02 -0700 |
| commit | 83081337419cb692eca4ee475d936b1fdcfd49f6 (patch) | |
| tree | 306d7b12294131e5db495b773f9eb5bbddb936cf /net/ipv6/tcp_ipv6.c | |
| parent | 998642e999d23324c5dbf38149606d09cec2c377 (diff) | |
tcp: move tcp_memory_allocated into net_aligned_data
____cacheline_aligned_in_smp attribute only makes sure to align
a field to a cache line. It does not prevent the linker to use
the remaining of the cache line for other variables, causing
potential false sharing.
Move tcp_memory_allocated into a dedicated cache line.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250630093540.3052835-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 9fb614e17bde..ed0b891885d8 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -41,6 +41,7 @@ #include <linux/random.h> #include <linux/indirect_call_wrapper.h> +#include <net/aligned_data.h> #include <net/tcp.h> #include <net/ndisc.h> #include <net/inet6_hashtables.h> @@ -2356,7 +2357,7 @@ struct proto tcpv6_prot = { .stream_memory_free = tcp_stream_memory_free, .sockets_allocated = &tcp_sockets_allocated, - .memory_allocated = &tcp_memory_allocated, + .memory_allocated = &net_aligned_data.tcp_memory_allocated, .per_cpu_fw_alloc = &tcp_memory_per_cpu_fw_alloc, .memory_pressure = &tcp_memory_pressure, |