Date: Thu, 13 Aug 2009 13:10:44 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: Andrew Thompson <thompsa@freebsd.org> Cc: current@freebsd.org, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: usb kthreads Message-ID: <20090813101044.GV1884@deviant.kiev.zoral.com.ua> In-Reply-To: <1280352d0908130209m21ae1d48ud2881e84b5e18a78@mail.gmail.com> References: <20090813073002.GA66860@citylink.fud.org.nz> <20090813082318.GP1884@deviant.kiev.zoral.com.ua> <1280352d0908130209m21ae1d48ud2881e84b5e18a78@mail.gmail.com>
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--Z+65snTBT714SHJP Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 13, 2009 at 10:09:37AM +0100, Andrew Thompson wrote: > 2009/8/13 Kostik Belousov <kostikbel@gmail.com> > > > > On Thu, Aug 13, 2009 at 12:30:02AM -0700, Andrew Thompson wrote: > > > Hi, > > > > > > > > > Here is an aesthetic patch to change the usb kernel processes to thre= ads, > > > this hides them from the usual 'ps' output. Please test and review. > > > > > > =9A1290 =9A?? =9ADL =9A =9A 0:00.00 [usbus0] > > > =9A[lots and lots more...] > > > =9A1309 =9A?? =9ADL =9A =9A 0:00.00 [usbus4] > > > > > > After the patch they can be seen as kernel threads. > > > > > > =9A PID =9A =9ATID COMM =9A =9A =9A =9A =9A =9A TDNAME =9A =9A =9A = =9A =9A CPU =9APRI STATE =9A WCHAN > > > =9A =9A 0 100000 kernel =9A =9A =9A =9A =9A swapper =9A =9A =9A =9A = =9A =9A0 =9A 68 sleep =9A sched > > > =9A =9A 0 100009 kernel =9A =9A =9A =9A =9A firmware taskq =9A =9A 0 = =9A 92 sleep =9A - > > > =9A =9A 0 100020 kernel =9A =9A =9A =9A =9A kqueue taskq =9A =9A =9A = 0 =9A 92 sleep =9A - > > > =9A =9A 0 100021 kernel =9A =9A =9A =9A =9A acpi_task_0 =9A =9A =9A = =9A0 =9A 92 sleep =9A - > > > =9A =9A 0 100022 kernel =9A =9A =9A =9A =9A acpi_task_1 =9A =9A =9A = =9A0 =9A 92 sleep =9A - > > > =9A =9A 0 100023 kernel =9A =9A =9A =9A =9A acpi_task_2 =9A =9A =9A = =9A0 =9A 92 sleep =9A - > > > =9A =9A 0 100027 kernel =9A =9A =9A =9A =9A thread taskq =9A =9A =9A = 0 =9A 92 sleep =9A - > > > =9A =9A 0 100031 kernel =9A =9A =9A =9A =9A bwi0 taskq =9A =9A =9A = =9A 0 =9A 16 sleep =9A - > > > =9A =9A 0 100032 kernel =9A =9A =9A =9A =9A bwi0 taskq =9A =9A =9A = =9A 0 =9A 16 sleep =9A - > > > =9A =9A 0 100106 kernel =9A =9A =9A =9A =9A usbus0 =9A =9A =9A =9A = =9A =9A 0 =9A 20 sleep =9A wmsg > > > =9A =9A 0 100107 kernel =9A =9A =9A =9A =9A usbus0 =9A =9A =9A =9A = =9A =9A 0 =9A 16 sleep =9A wmsg > > > =9A =9A 0 100108 kernel =9A =9A =9A =9A =9A usbus0 =9A =9A =9A =9A = =9A =9A 0 =9A 20 sleep =9A wmsg > > > =9A =9A 0 100109 kernel =9A =9A =9A =9A =9A usbus0 =9A =9A =9A =9A = =9A =9A 0 =9A 20 sleep =9A wmsg > > > =9A =9A [ ... ] > > > =9A =9A 0 100127 kernel =9A =9A =9A =9A =9A usbus4 =9A =9A =9A =9A = =9A =9A 0 =9A 20 sleep =9A wmsg > > > > > Can you use this opportunity to change "wmsg" wait channel name > > to something having "usb" in the name ? >=20 > When the thread is idle this should be `-` ? Taskqueue loop uses "-" as a name for the wait channel used when no work is scheduled, see subr_taskqueue.c:404.=20 --Z+65snTBT714SHJP Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkqD5qQACgkQC3+MBN1Mb4jyCQCgo8hN03Ml70gDzPr6Fm1XJXWU 6HgAoPYIBvI1xoXgTXPbCvAM5nyx4lmC =zk82 -----END PGP SIGNATURE----- --Z+65snTBT714SHJP--
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