linux-toradex.git/include/uapi/linux, branch v3.12.25

USB: cdc-wdm: properly include types.h

2014-06-20T15:34:09+00:00

commit 7ac3764fcafc06e72e1a79a9d998b9fdd900b2a6 upstream.

The file include/uapi/linux/usb/cdc-wdm.h uses a __u16 so it needs to
include types.h as well to make the build system happy.

Fixes: 3edce1cf813a ("USB: cdc-wdm: implement IOCTL_WDM_MAX_COMMAND")
Cc: Bjørn Mork 
Signed-off-by: Jiri Slaby

usb: cdc-wdm: export cdc-wdm uapi header

2014-06-20T15:34:08+00:00

commit 7d1896360f4d055d68565ef8ed56a677580f1a39 upstream.

The include/uapi/linux/usb/cdc-wdm.h header defines cdc-wdm
userspace APIs and should be exported by make headers_install.

Fixes: 3edce1cf813a ("USB: cdc-wdm: implement IOCTL_WDM_MAX_COMMAND")
Signed-off-by: Bjørn Mork 
Signed-off-by: Jiri Slaby

xattr: guard against simultaneous glibc header inclusion

2014-05-15T07:55:38+00:00

commit ea1a8217b06b41b31a2b60b0b83f75c77ef9c873 upstream.

If the glibc xattr.h header is included after the uapi header,
compilation fails due to an enum re-using a #define from the uapi
header.

Protect against this by guarding the define and enum inclusions against
each other.

(See https://lists.debian.org/debian-glibc/2014/03/msg00029.html
and https://sourceware.org/glibc/wiki/Synchronizing_Headers
for more information.)

Signed-off-by: Serge Hallyn 
Cc: Andrew Morton 
Cc: Allan McRae 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Jiri Slaby

media: videodev2.h: add parenthesis around macro arguments

2014-05-15T07:55:25+00:00

commit aee786acfc0a12bcd37a1c60f3198fb25cf7181a upstream.

bt->width should be (bt)->width, and same for the other fields.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Jiri Slaby

floppy: bail out in open() if drive is not responding to block0 read

2014-04-18T08:58:54+00:00

commit 7b7b68bba5ef23734c35ffb0d8d82079ed604d33 upstream.

In case reading of block 0 during open() fails, it is not the right thing
to let open() succeed.

Fix this by introducing FD_OPEN_SHOULD_FAIL_BIT flag, and setting it in
case the bio callback encounters an error while trying to read block 0.

As a bonus, this works around certain broken userspace (blkid), which is
not able to properly handle read()s returning IO errors. Hence be nice to
those, and bail out during open() already; if block 0 is not readable,
read()s are not going to provide any meaningful data anyway.

Signed-off-by: Jiri Kosina 
Signed-off-by: Jiri Slaby

pkt_sched: fq: fix pacing for small frames

2013-12-08T15:29:13+00:00

[ Upstream commit f52ed89971adbe79b6438c459814034707b8ab91 ]

For performance reasons, sch_fq tried hard to not setup timers for every
sent packet, using a quantum based heuristic : A delay is setup only if
the flow exhausted its credit.

Problem is that application limited flows can refill their credit
for every queued packet, and they can evade pacing.

This problem can also be triggered when TCP flows use small MSS values,
as TSO auto sizing builds packets that are smaller than the default fq
quantum (3028 bytes)

This patch adds a 40 ms delay to guard flow credit refill.

Fixes: afe4fd062416 ("pkt_sched: fq: Fair Queue packet scheduler")
Signed-off-by: Eric Dumazet 
Cc: Maciej Żenczykowski 
Cc: Willem de Bruijn 
Cc: Yuchung Cheng 
Cc: Neal Cardwell 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

pkt_sched: fq: warn users using defrate

2013-12-08T15:29:12+00:00

[ Upstream commit 65c5189a2b57b9aa1d89e4b79da39928257c9505 ]

Commit 7eec4174ff29 ("pkt_sched: fq: fix non TCP flows pacing")
obsoleted TCA_FQ_FLOW_DEFAULT_RATE without notice for the users.

Suggested by David Miller

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

perf: Fix perf ring buffer memory ordering

2013-10-29T11:01:19+00:00

The PPC64 people noticed a missing memory barrier and crufty old
comments in the perf ring buffer code. So update all the comments and
add the missing barrier.

When the architecture implements local_t using atomic_long_t there
will be double barriers issued; but short of introducing more
conditional barrier primitives this is the best we can do.

Reported-by: Victor Kaplansky 
Tested-by: Victor Kaplansky 
Signed-off-by: Peter Zijlstra 
Cc: Mathieu Desnoyers 
Cc: michael@ellerman.id.au
Cc: Paul McKenney 
Cc: Michael Neuling 
Cc: Frederic Weisbecker 
Cc: anton@samba.org
Cc: benh@kernel.crashing.org
Link: http://lkml.kernel.org/r/20131025173749.GG19466@laptop.lan
Signed-off-by: Ingo Molnar

tc: export tc_defact.h to userspace

2013-10-02T20:39:11+00:00

Jamal sent patch to add tc user simple actions to iproute2
but required header was not being exported.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

perf: Fix capabilities bitfield compatibility in 'struct perf_event_mmap_page'

2013-09-20T07:45:11+00:00

Solve the problems around the broken definition of perf_event_mmap_page::
cap_usr_time and cap_usr_rdpmc fields which used to overlap, partially
fixed by:

  860f085b74e9 ("perf: Fix broken union in 'struct perf_event_mmap_page'")

The problem with the fix (merged in v3.12-rc1 and not yet released
officially), noticed by Vince Weaver is that the new behavior is
not detectable by new user-space, and that due to the reuse of the
field names it's easy to mis-compile a binary if old headers are used
on a new kernel or new headers are used on an old kernel.

To solve all that make this change explicit, detectable and self-contained,
by iterating the ABI the following way:

 - Always clear bit 0, and rename it to usrpage->cap_bit0, to at least not
   confuse old user-space binaries. RDPMC will be marked as unavailable
   to old binaries but that's within the ABI, this is a capability bit.

 - Rename bit 1 to ->cap_bit0_is_deprecated and always set it to 1, so new
   libraries can reliably detect that bit 0 is deprecated and perma-zero
   without having to check the kernel version.

 - Use bits 2, 3, 4 for the newly defined, correct functionality:

	cap_user_rdpmc		: 1, /* The RDPMC instruction can be used to read counts */
	cap_user_time		: 1, /* The time_* fields are used */
	cap_user_time_zero	: 1, /* The time_zero field is used */

 - Rename all the bitfield names in perf_event.h to be different from the
   old names, to make sure it's not possible to mis-compile it
   accidentally with old assumptions.

The 'size' field can then be used in the future to add new fields and it
will act as a natural ABI version indicator as well.

Also adjust tools/perf/ userspace for the new definitions, noticed by
Adrian Hunter.

Reported-by: Vince Weaver 
Signed-off-by: Peter Zijlstra 
Also-Fixed-by: Adrian Hunter 
Link: http://lkml.kernel.org/n/tip-zr03yxjrpXesOzzupszqglbv@git.kernel.org
Signed-off-by: Ingo Molnar