From: Joe Damato <jdamato@fastly.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
chuck.lever@oracle.com, jlayton@kernel.org,
linux-api@vger.kernel.org, brauner@kernel.org,
edumazet@google.com, davem@davemloft.net,
alexander.duyck@gmail.com, sridhar.samudrala@intel.com,
willemdebruijn.kernel@gmail.com, weiwan@google.com,
David.Laight@ACULAB.COM, arnd@arndb.de, sdf@google.com,
amritha.nambiar@intel.com,
Alexander Viro <viro@zeniv.linux.org.uk>, Jan Kara <jack@suse.cz>,
"open list:FILESYSTEMS (VFS and infrastructure)"
<linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH net-next v6 1/4] eventpoll: support busy poll per epoll instance
Date: Wed, 7 Feb 2024 12:23:23 -0800 [thread overview]
Message-ID: <20240207202323.GA1283@fastly.com> (raw)
In-Reply-To: <20240207121124.12941ed9@kernel.org>
On Wed, Feb 07, 2024 at 12:11:24PM -0800, Jakub Kicinski wrote:
> On Wed, 7 Feb 2024 11:14:08 -0800 Joe Damato wrote:
> > > Why do we need u64 for usecs? I think u16 would do, and u32 would give
> > > a very solid "engineering margin". If it was discussed in previous
> > > versions I think it's worth explaining in the commit message.
> >
> > In patch 4/4 the value is limited to U32_MAX, but if you prefer I use a u32
> > here instead, I can make that change.
>
> Unless you have a clear reason not to, I think using u32 would be more
> natural? If my head math is right the range for u32 is 4096 sec,
> slightly over an hour? I'd use u32 and limit it to S32_MAX.
OK, that seems fine. Sorry for the noob question, but since that represents
a fucntional change to patch 4/4, I believe I would need to drop Jiri's
Reviewed-by, is that right?
next prev parent reply other threads:[~2024-02-07 20:23 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-05 21:04 [PATCH net-next v6 0/4] Per epoll context busy poll support Joe Damato
2024-02-05 21:04 ` [PATCH net-next v6 1/4] eventpoll: support busy poll per epoll instance Joe Damato
2024-02-07 19:04 ` Jakub Kicinski
2024-02-07 19:14 ` Joe Damato
2024-02-07 20:11 ` Jakub Kicinski
2024-02-07 20:23 ` Joe Damato [this message]
2024-02-07 20:56 ` Jakub Kicinski
2024-02-08 17:46 ` Eric Dumazet
2024-02-08 18:06 ` Joe Damato
2024-02-05 21:04 ` [PATCH net-next v6 2/4] eventpoll: Add per-epoll busy poll packet budget Joe Damato
2024-02-07 19:04 ` Jakub Kicinski
2024-02-08 17:47 ` Eric Dumazet
2024-02-05 21:04 ` [PATCH net-next v6 3/4] eventpoll: Add per-epoll prefer busy poll option Joe Damato
2024-02-07 19:04 ` Jakub Kicinski
2024-02-08 17:49 ` Eric Dumazet
2024-02-05 21:04 ` [PATCH net-next v6 4/4] eventpoll: Add epoll ioctl for epoll_params Joe Damato
2024-02-07 8:37 ` Jiri Slaby
2024-02-07 18:50 ` Joe Damato
2024-02-07 19:07 ` Jakub Kicinski
2024-02-07 19:16 ` Joe Damato
2024-02-07 20:18 ` Jakub Kicinski
2024-02-06 18:51 ` [PATCH net-next v6 0/4] Per epoll context busy poll support Stanislav Fomichev
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