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

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Pull RCU updates from Ingo Molnar:
 "The main RCU changes in this cycle were:

   - Updates to use cond_resched() instead of cond_resched_rcu_qs()
     where feasible (currently everywhere except in kernel/rcu and in
     kernel/torture.c). Also a couple of fixes to avoid sending IPIs to
     offline CPUs.

   - Updates to simplify RCU's dyntick-idle handling.

   - Updates to remove almost all uses of smp_read_barrier_depends() and
     read_barrier_depends().

   - Torture-test updates.

   - Miscellaneous fixes"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
  torture: Save a line in stutter_wait(): while -> for
  torture: Eliminate torture_runnable and perf_runnable
  torture: Make stutter less vulnerable to compilers and races
  locking/locktorture: Fix num reader/writer corner cases
  locking/locktorture: Fix rwsem reader_delay
  torture: Place all torture-test modules in one MAINTAINERS group
  rcutorture/kvm-build.sh: Skip build directory check
  rcutorture: Simplify functions.sh include path
  rcutorture: Simplify logging
  rcutorture/kvm-recheck-*: Improve result directory readability check
  rcutorture/kvm.sh: Support execution from any directory
  rcutorture/kvm.sh: Use consistent help text for --qemu-args
  rcutorture/kvm.sh: Remove unused variable, `alldone`
  rcutorture: Remove unused script, config2frag.sh
  rcutorture/configinit: Fix build directory error message
  rcutorture: Preempt RCU-preempt readers more vigorously
  torture: Reduce #ifdefs for preempt_schedule()
  rcu: Remove have_rcu_nocb_mask from tree_plugin.h
  rcu: Add comment giving debug strategy for double call_rcu()
  tracing, rcu: Hide trace event rcu_nocb_wake when not used
  ...
This commit is contained in:
Linus Torvalds 2018-01-30 10:15:30 -08:00
commit d772794637
81 changed files with 501 additions and 748 deletions
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2
drivers/dma/ioat/dma.c
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@ -597,7 +597,6 @@ static void __cleanup(struct ioatdma_chan *ioat_chan, dma_addr_t phys_complete)
for (i = 0; i < active && !seen_current; i++) {
struct dma_async_tx_descriptor *tx;
smp_read_barrier_depends();
prefetch(ioat_get_ring_ent(ioat_chan, idx + i + 1));
desc = ioat_get_ring_ent(ioat_chan, idx + i);
dump_desc_dbg(ioat_chan, desc);
@ -715,7 +714,6 @@ static void ioat_abort_descs(struct ioatdma_chan *ioat_chan)
for (i = 1; i < active; i++) {
struct dma_async_tx_descriptor *tx;
smp_read_barrier_depends();
prefetch(ioat_get_ring_ent(ioat_chan, idx + i + 1));
desc = ioat_get_ring_ent(ioat_chan, idx + i);