From: Alexander Lobakin <aleksander.lobakin@intel.com>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: "Alexander Lobakin" <aleksander.lobakin@intel.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"John Fastabend" <john.fastabend@gmail.com>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Maciej Fijalkowski" <maciej.fijalkowski@intel.com>,
"Stanislav Fomichev" <sdf@fomichev.me>,
"Magnus Karlsson" <magnus.karlsson@intel.com>,
nex.sw.ncis.osdt.itp.upstreaming@intel.com, bpf@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH net-next v4 01/19] jump_label: export static_key_slow_{inc,dec}_cpuslocked()
Date: Thu, 7 Nov 2024 17:10:08 +0100 [thread overview]
Message-ID: <20241107161026.2903044-2-aleksander.lobakin@intel.com> (raw)
In-Reply-To: <20241107161026.2903044-1-aleksander.lobakin@intel.com>
Sometimes, there's a need to modify a lot of static keys or modify the
same key multiple times in a loop. In that case, it seems more optimal
to lock cpu_read_lock once and then call _cpuslocked() variants.
The enable/disable functions are already exported, the refcounted
counterparts however are not. Fix that to allow modules to save some
cycles.
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
---
kernel/jump_label.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 93a822d3c468..1034c0348995 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -182,6 +182,7 @@ bool static_key_slow_inc_cpuslocked(struct static_key *key)
}
return true;
}
+EXPORT_SYMBOL_GPL(static_key_slow_inc_cpuslocked);
bool static_key_slow_inc(struct static_key *key)
{
@@ -342,6 +343,7 @@ void static_key_slow_dec_cpuslocked(struct static_key *key)
STATIC_KEY_CHECK_USE(key);
__static_key_slow_dec_cpuslocked(key);
}
+EXPORT_SYMBOL_GPL(static_key_slow_dec_cpuslocked);
void __static_key_slow_dec_deferred(struct static_key *key,
struct delayed_work *work,
--
2.47.0
next prev parent reply other threads:[~2024-11-07 16:13 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-07 16:10 [PATCH net-next v4 00/19] xdp: a fistful of generic changes (+libeth_xdp) Alexander Lobakin
2024-11-07 16:10 ` Alexander Lobakin [this message]
2024-11-07 16:10 ` [PATCH net-next v4 02/19] skbuff: allow 2-4-argument skb_frag_dma_map() Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 03/19] unroll: add generic loop unroll helpers Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 04/19] bpf, xdp: constify some bpf_prog * function arguments Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 05/19] xdp, xsk: constify read-only arguments of some static inline helpers Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 06/19] xdp: allow attaching already registered memory model to xdp_rxq_info Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 07/19] xdp: register system page pool as an XDP memory model Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 08/19] page_pool: make page_pool_put_page_bulk() actually handle array of pages Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 09/19] page_pool: allow mixing PPs within one bulk Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 10/19] xdp: get rid of xdp_frame::mem.id Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 11/19] xdp: add generic xdp_buff_add_frag() Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 12/19] xdp: add generic xdp_build_skb_from_buff() Alexander Lobakin
2024-11-11 16:39 ` Toke Høiland-Jørgensen
2024-11-12 15:20 ` Alexander Lobakin
2024-11-13 11:13 ` Toke Høiland-Jørgensen
2024-11-13 11:13 ` Toke Høiland-Jørgensen
2024-11-07 16:10 ` [PATCH net-next v4 13/19] xsk: align &xdp_buff_xsk harder Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 14/19] xsk: allow attaching XSk pool via xdp_rxq_info_reg_mem_model() Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 15/19] xsk: make xsk_buff_add_frag really add a frag via __xdp_buff_add_frag() Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 16/19] xsk: add generic XSk &xdp_buff -> skb conversion Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 17/19] xsk: add helper to get &xdp_desc's DMA and meta pointer in one go Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 18/19] libeth: support native XDP and register memory model Alexander Lobakin
2024-11-07 16:10 ` [PATCH net-next v4 19/19] libeth: add a couple of XDP helpers (libeth_xdp) Alexander Lobakin
2024-11-08 16:27 ` [PATCH net-next v4 00/19] xdp: a fistful of generic changes (+libeth_xdp) Jakub Kicinski
2024-11-12 15:23 ` Alexander Lobakin
2024-11-13 2:05 ` Jakub Kicinski
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