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edef7e685d
linux/drivers/char
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Chris Wilson edef7e685d agp/intel: Use a write-combining map for updating PTEs 
Rewriting the PTE entries using an WC mapping is roughly an order of
magnitude faster than through the uncached mapping. This makes an
observable difference on workloads that cycle through large numbers of
buffers, for example Chromium using ShmPixmaps where virtually all the
CPU time is currently spent rebinding the userptr.

v2: Limit the WC mapping to older generations as we have observed that
the TLB invalidation on SandyBridge+ is unreliable with WC updates.
See i-g-t/tests/gem_gtt_cpu_tlb

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-09-20 14:23:07 +02:00
..
agp agp/intel: Use a write-combining map for updating PTEs 2012-09-20 14:23:07 +02:00
hw_random omap-rng: fix use of SIMPLE_DEV_PM_OPS 2012-08-10 12:28:05 +02:00
ipmi char/ipmi: remove local ioctl defines replaced by generic ones 2012-07-23 12:48:04 +02:00
mwave Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
pcmcia Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
tpm tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP 2012-08-10 14:29:50 +02:00
xilinx_hwicap xilinx_hwicap: reset XHI_MAX_RETRIES 2012-04-19 19:09:18 -07:00
apm-emulation.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm 2012-04-05 17:34:30 -07:00
applicom.c drivers/char/applicom.c: fix information leak to userland 2010-10-27 18:03:14 -07:00
applicom.h
bfin-otp.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
bsr.c powerpc/BSR: cleanup the error path of bsr_init 2012-07-17 10:27:38 -07:00
ds1302.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ds1620.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
dsp56k.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
dtlk.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
efirtc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
generic_nvram.c drivers: fix up various ->llseek() implementations 2011-07-20 20:47:58 -04:00
genrtc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
hangcheck-timer.c
hpet.c printk(): add KERN_CONT where needed in hpet and vt code 2012-04-09 10:30:39 -07:00
i8k.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
Kconfig ramoops: Move to fs/pstore/ram.c 2012-05-16 08:06:37 -07:00
lp.c Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
Makefile ramoops: Move to fs/pstore/ram.c 2012-05-16 08:06:37 -07:00
mbcs.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mbcs.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mem.c powerpc: Disable /dev/port interface on systems without an ISA bridge 2012-07-11 18:22:32 +10:00
misc.c switch device_get_devnode() and ->devnode() to umode_t * 2012-01-03 22:54:55 -05:00
mmtimer.c posix-timers: Cleanup namespace 2011-02-02 15:28:19 +01:00
msm_smd_pkt.c drivers/char/msm_smd_pkt.c: don't use IS_ERR() 2011-08-25 16:25:33 -07:00
mspec.c [IA64] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts 2012-07-26 10:55:26 -07:00
nsc_gpio.c
nvram.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nwbutton.c Fix common misspellings 2011-03-31 11:26:23 -03:00
nwbutton.h
nwflash.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
pc8736x_gpio.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
ppdev.c drivers/char/ppdev.c: put gotten port value 2011-05-26 17:12:37 -07:00
ps3flash.c drivers/char: Add module.h to those who were using it implicitly 2011-10-31 19:31:40 -04:00
random.c random: mix in architectural randomness in extract_buf() 2012-07-27 22:37:20 -04:00
raw.c switch device_get_devnode() and ->devnode() to umode_t * 2012-01-03 22:54:55 -05:00
rtc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
scx200_gpio.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
snsc_event.c
snsc.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
snsc.h headers: kobject.h redux 2011-01-10 08:51:44 -08:00
sonypi.c sonypi: Use struct dev_pm_ops for power management 2012-07-01 13:31:14 +02:00
tb0219.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
tile-srom.c tile-srom.c driver: minor code cleanup 2012-04-02 12:14:10 -04:00
tlclk.c char: Fix typo in tlclk.c 2012-02-09 23:09:37 +01:00
toshiba.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
ttyprintk.c TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
uv_mmtimer.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
virtio_console.c virtio: console: tell host of open ports after resume from s3/s4 2012-05-17 12:14:33 +03:00