user/sven/linux.git/include/uapi/linux, branch v3.12.13

pkt_sched: fq: fix pacing for small frames

2013-12-08T15:29:13Z

[ 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

2013-12-08T15:29:12Z

[ 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

2013-10-29T11:01:19Z

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

2013-10-02T20:39:11Z

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'

2013-09-20T07:45:11Z

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

perf: Update ABI comment

2013-09-20T04:54:34Z

For some mysterious reason the sample_id field of PERF_RECORD_MMAP went AWOL. Reported-by: Vince Weaver Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-09-18T16:22:53Z

Pull perf fixes from Ingo Molnar: "Two small fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix UAPI export of PERF_EVENT_IOC_ID perf/x86/intel: Fix Silvermont offcore masks

perf: Fix UAPI export of PERF_EVENT_IOC_ID

2013-09-18T09:29:07Z

Without the following patch I have problems compiling code using the new PERF_EVENT_IOC_ID ioctl(). It looks like u64 was used instead of __u64 Signed-off-by: Vince Weaver Acked-by: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1309171450380.11444@vincent-weaver-1.um.maine.edu Signed-off-by: Ingo Molnar

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2013-09-15T11:13:39Z

Pull input update from Dmitry Torokhov: "The only change is David Hermann's new EVIOCREVOKE evdev ioctl that allows safely passing file descriptors to input devices to session processes and later being able to stop delivery of events through these fds so that inactive sessions will no longer receive user input that does not belong to them" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: evdev - add EVIOCREVOKE ioctl

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-09-12T22:01:38Z

Pull vfs pile 4 from Al Viro: "list_lru pile, mostly" This came out of Andrew's pile, Al ended up doing the merge work so that Andrew didn't have to. Additionally, a few fixes. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (42 commits) super: fix for destroy lrus list_lru: dynamically adjust node arrays shrinker: Kill old ->shrink API. shrinker: convert remaining shrinkers to count/scan API staging/lustre/libcfs: cleanup linux-mem.h staging/lustre/ptlrpc: convert to new shrinker API staging/lustre/obdclass: convert lu_object shrinker to count/scan API staging/lustre/ldlm: convert to shrinkers to count/scan API hugepage: convert huge zero page shrinker to new shrinker API i915: bail out earlier when shrinker cannot acquire mutex drivers: convert shrinkers to new count/scan API fs: convert fs shrinkers to new scan/count API xfs: fix dquot isolation hang xfs-convert-dquot-cache-lru-to-list_lru-fix xfs: convert dquot cache lru to list_lru xfs: rework buffer dispose list tracking xfs-convert-buftarg-lru-to-generic-code-fix xfs: convert buftarg LRU to generic code fs: convert inode and dentry shrinking to be node aware vmscan: per-node deferred work ...