redonkable/alistair23-linux
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alistair23-linux/drivers/media/usb
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Linus Torvalds 7e0fb73c52 Merge branch 'hash' of git://ftp.sciencehorizons.net/linux 
Pull string hash improvements from George Spelvin:
 "This series does several related things:

   - Makes the dcache hash (fs/namei.c) useful for general kernel use.

     (Thanks to Bruce for noticing the zero-length corner case)

   - Converts the string hashes in <linux/sunrpc/svcauth.h> to use the
     above.

   - Avoids 64-bit multiplies in hash_64() on 32-bit platforms.  Two
     32-bit multiplies will do well enough.

   - Rids the world of the bad hash multipliers in hash_32.

     This finishes the job started in commit 689de1d6ca ("Minimal
     fix-up of bad hashing behavior of hash_64()")

     The vast majority of Linux architectures have hardware support for
     32x32-bit multiply and so derive no benefit from "simplified"
     multipliers.

     The few processors that do not (68000, h8/300 and some models of
     Microblaze) have arch-specific implementations added.  Those
     patches are last in the series.

   - Overhauls the dcache hash mixing.

     The patch in commit 0fed3ac866 ("namei: Improve hash mixing if
     CONFIG_DCACHE_WORD_ACCESS") was an off-the-cuff suggestion.
     Replaced with a much more careful design that's simultaneously
     faster and better.  (My own invention, as there was noting suitable
     in the literature I could find.  Comments welcome!)

   - Modify the hash_name() loop to skip the initial HASH_MIX().  This
     would let us salt the hash if we ever wanted to.

   - Sort out partial_name_hash().

     The hash function is declared as using a long state, even though
     it's truncated to 32 bits at the end and the extra internal state
     contributes nothing to the result.  And some callers do odd things:

      - fs/hfs/string.c only allocates 32 bits of state
      - fs/hfsplus/unicode.c uses it to hash 16-bit unicode symbols not bytes

   - Modify bytemask_from_count to handle inputs of 1..sizeof(long)
     rather than 0..sizeof(long)-1.  This would simplify users other
     than full_name_hash"

  Special thanks to Bruce Fields for testing and finding bugs in v1.  (I
  learned some humbling lessons about "obviously correct" code.)

  On the arch-specific front, the m68k assembly has been tested in a
  standalone test harness, I've been in contact with the Microblaze
  maintainers who mostly don't care, as the hardware multiplier is never
  omitted in real-world applications, and I haven't heard anything from
  the H8/300 world"

* 'hash' of git://ftp.sciencehorizons.net/linux:
  h8300: Add <asm/hash.h>
  microblaze: Add <asm/hash.h>
  m68k: Add <asm/hash.h>
  <linux/hash.h>: Add support for architecture-specific functions
  fs/namei.c: Improve dcache hash function
  Eliminate bad hash multipliers from hash_32() and  hash_64()
  Change hash_64() return value to 32 bits
  <linux/sunrpc/svcauth.h>: Define hash_str() in terms of hashlen_string()
  fs/namei.c: Add hashlen_string() function
  Pull out string hash to <linux/stringhash.h>
2016-05-28 16:15:25 -07:00
..
airspy [media] airspy: fix bit set/clean mess on s->flags 2016-03-01 10:48:17 -03:00
as102
au0828 [media] media: au0828 fix au0828_v4l2_device_register() to not unlock and free 2016-05-09 13:20:42 -03:00
b2c2
cpia2 [media] usb/cpia2_core: clean up a min_t() cast 2016-02-19 08:10:32 -02:00
cx231xx Merge branch 'i2c/for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-05-19 17:48:12 -07:00
dvb-usb scripts/spelling.txt: add "fimware" misspelling 2016-05-19 19:12:14 -07:00
dvb-usb-v2 Merge branch 'hash' of git://ftp.sciencehorizons.net/linux 2016-05-28 16:15:25 -07:00
em28xx [media] em28xx: add support for Hauppauge WinTV-dualHD DVB tuner 2016-05-09 14:25:39 -03:00
go7007 [media] v4l2-device.h: add v4l2_device_mask_ variants 2016-04-20 16:08:42 -03:00
gspca [media] touptek: cast char types on %x printk 2016-03-10 13:37:45 -03:00
hackrf
hdpvr
msi2500
pvrusb2 [media] pvrusb2: fix smatch errors 2016-04-20 15:48:29 -03:00
pwc
s2255
siano [media] media_device: move allocation out of media_device_*_init 2016-02-23 07:19:39 -03:00
stk1160
stkwebcam
tm6000
ttusb-budget
ttusb-dec
usbtv
usbvision [media] usbvision: revert commit 588afcc1 2016-04-20 15:58:54 -03:00
uvc [media] UVC: Add support for R200 depth camera 2016-03-03 06:49:20 -03:00
zr364xx
Kconfig
Makefile