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Re: [GIT, RFC] Killing the Big Kernel Lock

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From: Andi Kleen
Subject: Re: [GIT, RFC] Killing the Big Kernel Lock
Date: Sunday, March 28, 2010 - 2:58 pm

Jiri Kosina <jkosina@suse.cz> writes:


From a quick grep at least EHCI doesn't seem to need it?

Except for those two guys in core/*.c:

                        /* keep API that guarantees BKL */
                        lock_kernel();
                        retval = driver->ioctl(intf, ctl->ioctl_code, buf);
                        unlock_kernel();
                        if (retval == -ENOIOCTLCMD)
                                retval = -ENOTTY;

I guess that could be just moved into the low level modules with unlocked_ioctl

And one use in the usbfs which seems quite bogus and can be probably removed.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.
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Messages in current thread:
Re: [GIT, RFC] Killing the Big Kernel Lock, Andrew Morton, (Wed Mar 24, 2:07 pm)
[GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Wed Mar 24, 2:40 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Roland Dreier, (Wed Mar 24, 2:53 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Wed Mar 24, 2:59 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Alan Cox, (Wed Mar 24, 3:10 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Ingo Molnar, (Wed Mar 24, 3:23 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Wed Mar 24, 3:25 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Mar 25, 3:26 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Jiri Kosina, (Thu Mar 25, 5:55 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Mar 25, 6:06 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Mar 25, 6:38 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Dan Carpenter, (Thu Mar 25, 6:40 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Mar 25, 7:14 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Stefan Richter, (Fri Mar 26, 4:47 pm)
[PATCH] firewire: char device files are not seekable (BKL ..., Stefan Richter, (Sat Mar 27, 2:16 am)
[PATCH] ieee1394: char device files are not seekable (BKL ..., Stefan Richter, (Sat Mar 27, 2:20 am)
[PATCH RFC] DVB: add dvb_generic_nonseekable_open, dvb_gen ..., Stefan Richter, (Sat Mar 27, 3:40 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Sat Mar 27, 7:37 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Stefan Richter, (Sun Mar 28, 5:27 am)
[PATCH RFC v2] DVB: add dvb_generic_nonseekable_open, dvb_ ..., Stefan Richter, (Sun Mar 28, 7:47 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 1:04 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Sun Mar 28, 1:05 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 1:11 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 1:15 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 1:33 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Sun Mar 28, 2:34 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Andi Kleen, (Sun Mar 28, 2:58 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 4:18 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 4:24 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Sun Mar 28, 4:38 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock II, Andi Kleen, (Sun Mar 28, 6:07 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Mon Mar 29, 4:04 am)
Re: [GIT, RFC] Killing the Big Kernel Lock II, Arnd Bergmann, (Mon Mar 29, 4:48 am)
Re: [GIT, RFC] Killing the Big Kernel Lock II, Andi Kleen, (Mon Mar 29, 5:30 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, John Kacur, (Mon Mar 29, 5:45 am)
Re: [GIT, RFC] Killing the Big Kernel Lock II, Arnd Bergmann, (Mon Mar 29, 7:43 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Mon Mar 29, 10:59 am)
Re: [GIT, RFC] Killing the Big Kernel Lock II, Andi Kleen, (Mon Mar 29, 1:11 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Mon Mar 29, 2:18 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Roland Dreier, (Tue Mar 30, 10:22 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Roland Dreier, (Wed Mar 31, 3:11 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Wed Mar 31, 3:20 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Apr 1, 1:50 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Jan Blunck, (Thu Apr 8, 1:45 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Arnd Bergmann, (Thu Apr 8, 2:27 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Frederic Weisbecker, (Thu Apr 8, 2:30 pm)
Re: [GIT, RFC] Killing the Big Kernel Lock, Jan Blunck, (Fri Apr 9, 4:02 am)
Re: [GIT, RFC] Killing the Big Kernel Lock, Stefan Richter, (Sat Apr 10, 8:13 am)