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  1. 23 3月, 2016 1 次提交
  3. 18 3月, 2016 1 次提交
    • J
      mm: introduce page reference manipulation functions · fe896d18
      由 Joonsoo Kim 提交于 
      The success of CMA allocation largely depends on the success of
migration and key factor of it is page reference count.  Until now, page
reference is manipulated by direct calling atomic functions so we cannot
follow up who and where manipulate it.  Then, it is hard to find actual
reason of CMA allocation failure.  CMA allocation should be guaranteed
to succeed so finding offending place is really important.

In this patch, call sites where page reference is manipulated are
converted to introduced wrapper function.  This is preparation step to
add tracepoint to each page reference manipulation function.  With this
facility, we can easily find reason of CMA allocation failure.  There is
no functional change in this patch.

In addition, this patch also converts reference read sites.  It will
help a second step that renames page._count to something else and
prevents later attempt to direct access to it (Suggested by Andrew).
Signed-off-by: NJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: NMichal Nazarewicz <mina86@mina86.com>
Acked-by: NVlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      fe896d18
  5. 15 3月, 2016 1 次提交
  7. 07 3月, 2016 2 次提交
  9. 04 3月, 2016 1 次提交
  11. 26 2月, 2016 2 次提交
  13. 25 2月, 2016 3 次提交
  15. 17 2月, 2016 1 次提交
  17. 11 2月, 2016 8 次提交
  19. 26 1月, 2016 3 次提交
    • J
      net: fec: use CONFIG_ARM instead of CONFIG_ARCH_MXC/SOC_IMX28 · 05f3b50e
      由 Johannes Berg 提交于 
      As Arnd Bergmann points out, using CONFIG_ARCH_MXC and/or SOC_IMX28
is wrong if some other ARM platform uses this device - the operation
of the driver would depend on an unrelated ARM platform that might
or might not be set for multi-platform kernels.

Prior to my previous patch, any other platforms using it would have
been broken already due to having the cbd_datlen/cbd_sc fields in
the wrong order, but byte ordering correctly, so no such platforms
can exist and work today.

In any case, it seems likely that only Freescale SoCs use this part,
and those are little-endian on ARM, so CONFIG_ARM is safe for them.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      05f3b50e
    • J
      net: fec: make driver endian-safe · 5cfa3039
      由 Johannes Berg 提交于 
      The driver treats the device descriptors as CPU-endian, which appears
to be correct with the default endianness on both ARM (typically LE)
and PowerPC (typically BE) SoCs, indicating that the hardware block
is generated differently. Add endianness annotations and byteswaps as
necessary.

It's not clear that the ifdef there really is correct and shouldn't
just be #ifdef CONFIG_ARM, but I also can't test on anything but the
i.MX6 HummingBoard where this gets it working with a BE kernel.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5cfa3039
    • M
      82xx: FCC: Fixing a bug causing to FCC port lock-up (second try) · 426f0468
      由 Martin Roth 提交于 
      This is an additional patch to the one already submitted recently.
The previous patch was not complete, and the FCC port lock-up scenario
has been reproduced in lab.
I had an opportunity to check the current patch in lab and the FCC
port lock no longer freezes, while the previous patch still locks-up the
FCC port.
The current patch fixes a pointer arithmetic bug (second bug in the same
line), which leads FCC port lock-up during underrun/collision handling.
Within the tx_startup() function in mac-fcc.c, the address of last BD is
not calculated correctly. As a result of wrong calculation of the last BD
address, the next transmitted BD may be set to an area out of the transmit
BD ring. This actually causes to port lock-up and it is not recoverable.
Signed-off-by: NMartin Roth <martin.roth@motorolasolutions.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      426f0468
  21. 15 1月, 2016 1 次提交
  23. 12 1月, 2016 2 次提交
  25. 08 1月, 2016 4 次提交
  27. 07 1月, 2016 2 次提交
  29. 05 1月, 2016 1 次提交
    • A
      fsl/fman: allow modular build · 46678612
      由 Arnd Bergmann 提交于 
      ARM allmodconfig fails because of the addition of the FMAN driver:

drivers/built-in.o: In function `dtsec_restart_autoneg':
binder.c:(.text+0x173328): undefined reference to `mdiobus_read'
binder.c:(.text+0x173348): undefined reference to `mdiobus_write'
drivers/built-in.o: In function `dtsec_config':
binder.c:(.text+0x173d24): undefined reference to `of_phy_find_device'
drivers/built-in.o: In function `init_phy':
binder.c:(.text+0x1763b0): undefined reference to `of_phy_connect'
drivers/built-in.o: In function `stop':
binder.c:(.text+0x176014): undefined reference to `phy_stop'
drivers/built-in.o: In function `start':
binder.c:(.text+0x176078): undefined reference to `phy_start'

The reason is that the driver uses PHYLIB, but that is a loadable
module here, and fman itself is built-in.

This patch makes it possible to configure fman as a module as well
so we don't change the status of PHYLIB in an allmodconfig kernel,
and it adds a 'select PHYLIB' statement to ensure that phylib is
always built-in when fman is.

The driver uses "builtin_platform_driver(fman_driver);", which means
it cannot be unloaded, but it's still possible to have it as a loadable
module that gets loaded once and never removed.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Fixes: 5adae51a ("fsl/fman: Add FMan MURAM support")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      46678612
  31. 28 12月, 2015 6 次提交
  33. 23 12月, 2015 1 次提交