max workqueue name length

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello,


When creating a workqueue, workqueue name is limited to 10 chars
(kernel/workqueue.c , function is __create_workqueue, test is done in a BUG_ON).

Why has this length be limited to 10 chars ?
Can I safely increase this max length (13 chars should be enough...) ?



Some comments about these questions:

In SCSI layer, HBA kernel ID is incremented after each modprobe/rmmod.

Then, when a scsi driver is managing a working queue and HBA kernel ID is greater than 99 (let's assume that you have modprobe/rmmod the scsi driver to get this ID to 99, or you may have play with 'scsi_debug' module), an oops is generated when loading again the driver (and the driver is frozen).

This is because working queue name format is "scsi_wq_%d" (drivers/scsi/hosts.c , function scsi_add_host, %d is the HBA ID), and so working queue name length is greater than 10 chars when HBA kernel ID is > 99...


Best regards


--
Frederic TEMPORELLI
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux