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[PATCH] staging/panel: Prevent double-calling of parport_release - fix oops.
From: Peter Huewe <peterhuewe(a)gmx.de> This patch prevents the code from calling parport_release and parport_unregister_device twice with the same arguments - and thus fixes an oops. Rationale: After the first call the parport is already released and the handle isn't valid anymore and calling parport_release an... 6 Jul 2010 23:19
2.6.35-rc3: Load average climbing to 3+ with no apparent reason: CPU 98% idle, with hardly no I/O
On Thu, 1 Jul 2010 10:40:22 +0300 T__r__k Edwin <edwintorok(a)gmail.com> wrote: Hi, I just noticed that my load average is 2.99 and climbing (it is 3.11 right now). CPU is 98% idle, with hardly any I/O at all so I don't know what is causing this: 10:32:55 up 1:01, 5 users, load average: 3.28, ... 10 Jul 2010 07:17
[PATCH] acerhdf: fix resource reclaim in error path
This patch fix resource reclaim in below cases: 1. acerhdf_register_platform() does not properly handle platform_device_alloc() failure and platform_device_add() failure. This patch adds error handling for acerhdf_register_platform(). 2. acerhdf_register_platform() return err with acerhdf_dev == NULL. as ... 6 Jul 2010 23:19
block: remove BKL from partition code
On Sat, Jul 03, 2010 at 11:47:19PM +0200, Arnd Bergmann wrote: I don't see any reason why we need the BKL here. The functions blkdev_get, blkdev_put, blkpg_ioctl and blkdev_reread_part are the only remaining users of the big kernel lock in the block layer, and they all access the same fields of the bdev ... 6 Jul 2010 22:14
scsi/sd: remove big kernel lock
This looks fine, although relying on the bd_mutex held in the caller for ->openers seems a bit fragile. At least add a big comment about this fact. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.... 7 Jul 2010 10:08
block: remove BKL from BLKROSET and BLKFLSBUF
On Sat, Jul 03, 2010 at 11:47:18PM +0200, Arnd Bergmann wrote: We only call the functions set_device_ro(), invalidate_bdev(), sync_filesystem() and sync_blockdev() while holding the BKL in these commands. All of these are also done in other code paths without the BKL, which leads me to the conclusion tha... 6 Jul 2010 22:14
block: push BKL into blktrace ioctls
On Sat, Jul 03, 2010 at 11:47:17PM +0200, Arnd Bergmann wrote: The blktrace driver currently needs the BKL, but we should not need to take that in the block layer, so just push it down into the driver itself. Does blktrace actually need it? Anyway, pushing it down is a good start. Reviewed-by: Christ... 7 Jul 2010 10:08
shmem: reduce one time of locking in pagefault
On Wed, Jul 07, 2010 at 09:32:54AM +0800, Andrew Morton wrote: On Wed, 07 Jul 2010 09:15:46 +0800 Shaohua Li <shaohua.li(a)intel.com> wrote: I'm running a shmem pagefault test case (see attached file) under a 64 CPU system. Profile shows shmem_inode_info->lock is heavily contented and 100% CPUs time... 8 Jul 2010 23:38
Oops after unloading staging/panel/panel.ko
Hi, I just tried to get the driver working with my lcd display (hd44780 compatible) and the kernel oops'ed - but unfortunately I can't figure out why. Steps to reproduce: 1) compile panel driver with CONFIG_PANEL=m CONFIG_PANEL_PARPORT=0 CONFIG_PANEL_PROFILE=0 CONFIG_PANEL_KEYPAD=0 CONFIG_PANEL_LCD=1 CON... 6 Jul 2010 23:19
[PATCH]shmem: reduce one time of locking in pagefault
I'm running a shmem pagefault test case (see attached file) under a 64 CPU system. Profile shows shmem_inode_info->lock is heavily contented and 100% CPUs time are trying to get the lock. In the pagefault (no swap) case, shmem_getpage gets the lock twice, the last one is avoidable if we prealloc a page so we could ... 6 Jul 2010 22:14
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