From: Louis Sautier <sautier.louis@gmail.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: sashiko-reviews@lists.linux.dev, linux-hwmon@vger.kernel.org
Subject: Re: [PATCH 2/2] scsi: mpt3sas: add hwmon support
Date: Thu, 14 May 2026 21:57:17 +0200 [thread overview]
Message-ID: <agYpHdvQiUtsXeJw@localhost> (raw)
In-Reply-To: <388bb990-3df0-4eb4-983d-59c502397b8c@roeck-us.net>
On Wed, 13 May 2026 22:17:26 -0700, Guenter Roeck wrote:
> If you use a recent kernel, the hwmon subsystem serializes sysfs accesses,
> so hammering it from multiple threads should not substantially increase
> the back-end load. If you have 16 readers, 15 of them will wait for the
> hwmon subsystem lock. All lock contention will happen in the hwmon core.
Right, I wasn't aware of this mechanism. So the amplification
path the bot worried about doesn't actually exist?
next prev parent reply other threads:[~2026-05-14 19:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 21:47 [PATCH 0/2] scsi: mpt3sas: add hwmon support Louis Sautier
2026-05-12 21:47 ` [PATCH 1/2] scsi: mpt3sas: add IO Unit Page 7 config accessor Louis Sautier
2026-05-12 21:47 ` [PATCH 2/2] scsi: mpt3sas: add hwmon support Louis Sautier
2026-05-13 3:57 ` Guenter Roeck
2026-05-14 1:11 ` Louis Sautier
2026-05-14 1:26 ` Guenter Roeck
2026-05-14 1:02 ` sashiko-bot
2026-05-14 3:39 ` Louis Sautier
2026-05-14 5:17 ` Guenter Roeck
2026-05-14 19:57 ` Louis Sautier [this message]
2026-05-14 20:58 ` Guenter Roeck
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