Commit Graph

17 Commits

Author SHA1 Message Date
Eric Dumazet 1ae5dc342a net: trans_start cleanups
Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Drivers can avoid one cache miss
(on dev->trans_start) in their start_xmit() handler.

Exceptions are NETIF_F_LLTX drivers

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-10 05:01:31 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Stephen Hemminger d71a674922 wan: convert drivers to netdev_tx_t
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 01:13:28 -07:00
Joe Perches ad361c9884 Remove multiple KERN_ prefixes from printk formats
Commit 5fd29d6ccb ("printk: clean up
handling of log-levels and newlines") changed printk semantics.  printk
lines with multiple KERN_<level> prefixes are no longer emitted as
before the patch.

<level> is now included in the output on each additional use.

Remove all uses of multiple KERN_<level>s in formats.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-08 10:30:03 -07:00
Ben Hutchings 288379f050 net: Remove redundant NAPI functions
Following the removal of the unused struct net_device * parameter from
the NAPI functions named *netif_rx_* in commit 908a7a1, they are
exactly equivalent to the corresponding *napi_* functions and are
therefore redundant.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-21 14:33:50 -08:00
Neil Horman 908a7a16b8 net: Remove unused netdev arg from some NAPI interfaces.
When the napi api was changed to separate its 1:1 binding to the net_device
struct, the netif_rx_[prep|schedule|complete] api failed to remove the now
vestigual net_device structure parameter.  This patch cleans up that api by
properly removing it..

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-22 20:43:12 -08:00
Krzysztof Hałasa e1f024eb5d WAN: Simplify sca_init_port() in HD64572 driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:48 +01:00
Krzysztof Hałasa fcfe9ff3e2 WAN: Correct comments in hd6457[02].c
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:48 +01:00
Krzysztof Hałasa 0b59cef885 WAN: HD64572 drivers don't use next_desc() anymore.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:48 +01:00
Krzysztof Hałasa 61e0a6a268 WAN: Simplify HD64572 drivers.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:48 +01:00
Krzysztof Hałasa 0954ed8269 WAN: Simplify HD64572 status handling.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa 0446c3b1e6 WAN: rework HD64572 interrupts a bit.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa b0942f78dd WAN: HD64572 already handles TX underruns with DMAC.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa 09fd65aa8a WAN: TX-done handler now uses the ownership bit in HD64572 drivers.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa abc9d91a35 WAN: convert HD64572-based drivers to NAPI.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa 302243922b WAN: remove SCA support from SCA-II drivers
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00
Krzysztof Hałasa 6b40aba304 WAN: split hd6457x.c into hd64570.c and hd64572.c
Supporting both original SCA and SCA-II in one file was nice at some
point but now it's increasingly painful.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-11-22 02:49:47 +01:00