From: Jakub Kicinski <kuba@kernel.org>
To: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>, <davem@davemloft.net>,
<pabeni@redhat.com>, <edumazet@google.com>,
<netdev@vger.kernel.org>, <magnus.karlsson@intel.com>,
<aleksander.lobakin@intel.com>, <ast@kernel.org>,
<daniel@iogearbox.net>, <hawk@kernel.org>,
<john.fastabend@gmail.com>, <bpf@vger.kernel.org>,
Shannon Nelson <shannon.nelson@amd.com>,
Chandan Kumar Rout <chandanx.rout@intel.com>
Subject: Re: [PATCH net 6/8] ice: improve updating ice_{t, r}x_ring::xsk_pool
Date: Thu, 25 Jul 2024 16:07:00 -0700 [thread overview]
Message-ID: <20240725160700.449e5b5f@kernel.org> (raw)
In-Reply-To: <ZqKaAz8rNOx/Sz5E@boxer>
On Thu, 25 Jul 2024 20:31:31 +0200 Maciej Fijalkowski wrote:
> Does that make any sense now?
Could be brain fog due to post-netdev.conf covid but no, not really.
The _ONCE() helpers basically give you the ability to store the pointer
to a variable on the stack, and that variable won't change behind your
back. But the only reason to READ_ONCE(ptr->thing) something multiple
times is to tell KCSAN that "I know what I'm doing", it just silences
potential warnings :S
next prev parent reply other threads:[~2024-07-25 23:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-08 22:14 [PATCH net 0/8][pull request] ice: fix AF_XDP ZC timeout and concurrency issues Tony Nguyen
2024-07-08 22:14 ` [PATCH net 1/8] ice: respect netif readiness in AF_XDP ZC related ndo's Tony Nguyen
2024-07-08 22:14 ` [PATCH net 2/8] ice: don't busy wait for Rx queue disable in ice_qp_dis() Tony Nguyen
2024-07-08 22:14 ` [PATCH net 3/8] ice: replace synchronize_rcu with synchronize_net Tony Nguyen
2024-07-08 22:14 ` [PATCH net 4/8] ice: modify error handling when setting XSK pool in ndo_bpf Tony Nguyen
2024-07-08 22:14 ` [PATCH net 5/8] ice: toggle netif_carrier when setting up XSK pool Tony Nguyen
2024-07-08 22:14 ` [PATCH net 6/8] ice: improve updating ice_{t, r}x_ring::xsk_pool Tony Nguyen
2024-07-10 1:45 ` Jakub Kicinski
2024-07-23 23:46 ` Maciej Fijalkowski
2024-07-24 14:57 ` Jakub Kicinski
2024-07-24 15:49 ` Maciej Fijalkowski
2024-07-25 13:38 ` Jakub Kicinski
2024-07-25 18:31 ` Maciej Fijalkowski
2024-07-25 23:07 ` Jakub Kicinski [this message]
2024-07-26 13:43 ` Maciej Fijalkowski
2024-07-26 14:37 ` Jakub Kicinski
2024-07-08 22:14 ` [PATCH net 7/8] ice: add missing WRITE_ONCE when clearing ice_rx_ring::xdp_prog Tony Nguyen
2024-07-08 22:14 ` [PATCH net 8/8] ice: xsk: fix txq interrupt mapping Tony Nguyen
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