user/sven/linux.git/kernel, branch v4.7

Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2016-07-15T21:36:55Z

Pull workqueue fix from Tejun Heo: "The optimization for setting unbound worker affinity masks collided with recent scheduler changes triggering warning messages. This late pull request fixes the bug by removing the optimization" * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Fix setting affinity of unbound worker threads

Merge branch 'akpm' (patches from Andrew)

2016-07-15T07:00:18Z

Merge misc fixes from Andrew Morton: "20 fixes" * emailed patches from Andrew Morton : m32r: fix build warning about putc mm: workingset: printk missing log level, use pr_info() mm: thp: refix false positive BUG in page_move_anon_rmap() mm: rmap: call page_check_address() with sync enabled to avoid racy check mm: thp: move pmd check inside ptl for freeze_page() vmlinux.lds: account for destructor sections gcov: add support for gcc version >= 6 mm, meminit: ensure node is online before checking whether pages are uninitialised mm, meminit: always return a valid node from early_pfn_to_nid kasan/quarantine: fix bugs on qlist_move_cache() uapi: export lirc.h header madvise_free, thp: fix madvise_free_huge_pmd return value after splitting Revert "scripts/gdb: add documentation example for radix tree" Revert "scripts/gdb: add a Radix Tree Parser" scripts/gdb: Perform path expansion to lx-symbol's arguments scripts/gdb: add constants.py to .gitignore scripts/gdb: rebuild constants.py on dependancy change scripts/gdb: silence 'nothing to do' message kasan: add newline to messages mm, compaction: prevent VM_BUG_ON when terminating freeing scanner

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

2016-07-15T06:02:49Z

Pull scheduler fix from Ingo Molnar: "Fix a CPU hotplug related corruption of the load average that got introduced in this merge window" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/core: Correct off by one bug in load migration calculation

gcov: add support for gcc version >= 6

2016-07-15T05:54:27Z

Link: http://lkml.kernel.org/r/20160701130914.GA23225@styxhp Signed-off-by: Florian Meier Reviewed-by: Peter Oberparleiter Tested-by: Peter Oberparleiter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

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

2016-07-13T20:44:47Z

Pull perf and timer fixes from Ingo Molnar: "A fix for a posix CPU timers bug, and a perf printk message fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Fix bogus kernel printk, again * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix_cpu_timer: Exit early when process has been reaped

sched/core: Correct off by one bug in load migration calculation

2016-07-13T12:58:20Z

The move of calc_load_migrate() from CPU_DEAD to CPU_DYING did not take into account that the function is now called from a thread running on the outgoing CPU. As a result a cpu unplug leakes a load of 1 into the global load accounting mechanism. Fix it by adjusting for the currently running thread which calls calc_load_migrate(). Reported-by: Anton Blanchard Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Cc: Linus Torvalds Cc: Michael Ellerman Cc: Vaidyanathan Srinivasan Cc: rt@linutronix.de Cc: shreyas@linux.vnet.ibm.com Fixes: e9cd8fa4fcfd: ("sched/migration: Move calc_load_migrate() into CPU_DYING") Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1607121744350.4083@nanos Signed-off-by: Ingo Molnar

cpu/hotplug: Keep enough storage space if SMP=n to avoid array out of bounds scribble

2016-07-13T07:29:39Z

Xiaolong Ye reported lock debug warnings triggered by the following commit: 8de4a0066106 ("perf/x86: Convert the core to the hotplug state machine") The bug is the following: the cpuhp_bp_states[] array is cut short when CONFIG_SMP=n, but the dynamically registered callbacks are stored nevertheless and happily scribble outside of the array bounds... We need to store them in case that the state is unregistered so we can invoke the teardown function. That's independent of CONFIG_SMP. Make sure the array is large enough. Reported-by: kernel test robot Signed-off-by: Thomas Gleixner Cc: Adam Borowski Cc: Alexander Shishkin Cc: Anna-Maria Gleixner Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Jiri Olsa Cc: Kan Liang Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Sebastian Andrzej Siewior Cc: Stephane Eranian Cc: Vince Weaver Cc: lkp@01.org Cc: stable@vger.kernel.org Cc: tipbuild@zytor.com Fixes: cff7d378d3fd "cpu/hotplug: Convert to a state machine for the control processor" Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1607122144560.4083@nanos Signed-off-by: Ingo Molnar

posix_cpu_timer: Exit early when process has been reaped

2016-07-11T15:20:12Z

Variable "now" seems to be genuinely used unintialized if branch if (CPUCLOCK_PERTHREAD(timer->it_clock)) { is not taken and branch if (unlikely(sighand == NULL)) { is taken. In this case the process has been reaped and the timer is marked as disarmed anyway. So none of the postprocessing of the sample is required. Return right away. Signed-off-by: Alexey Dobriyan Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160707223911.GA26483@p183.telecom.by Signed-off-by: Thomas Gleixner

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

2016-07-08T16:04:34Z

Pull scheduler fixes from Ingo Molnar: "Two load-balancing fixes for cgroups-intense workloads" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion sched/fair: Fix effective_load() to consistently use smoothed load

perf/core: Fix pmu::filter_match for SW-led groups

2016-07-07T06:57:57Z

The following commit: 66eb579e66ec ("perf: allow for PMU-specific event filtering") added the pmu::filter_match() callback. This was intended to avoid HW constraints on events from resulting in extremely pessimistic scheduling. However, pmu::filter_match() is only called for the leader of each event group. When the leader is a SW event, we do not filter the groups, and may fail at pmu::add() time, and when this happens we'll give up on scheduling any event groups later in the list until they are rotated ahead of the failing group. This can result in extremely sub-optimal event scheduling behaviour, e.g. if running the following on a big.LITTLE platform: $ taskset -c 0 ./perf stat \ -e 'a57{context-switches,armv8_cortex_a57/config=0x11/}' \ -e 'a53{context-switches,armv8_cortex_a53/config=0x11/}' \ ls context-switches (0.00%) armv8_cortex_a57/config=0x11/ (0.00%) 24 context-switches (37.36%) 57589154 armv8_cortex_a53/config=0x11/ (37.36%) Here the 'a53' event group was always eligible to be scheduled, but the 'a57' group never eligible to be scheduled, as the task was always affine to a Cortex-A53 CPU. The SW (group leader) event in the 'a57' group was eligible, but the HW event failed at pmu::add() time, resulting in ctx_flexible_sched_in giving up on scheduling further groups with HW events. One way of avoiding this is to check pmu::filter_match() on siblings as well as the group leader. If any of these fail their pmu::filter_match() call, we must skip the entire group before attempting to add any events. Signed-off-by: Mark Rutland Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Fixes: 66eb579e66ec ("perf: allow for PMU-specific event filtering") Link: http://lkml.kernel.org/r/1465917041-15339-1-git-send-email-mark.rutland@arm.com [ Small readability edits. ] Signed-off-by: Ingo Molnar