Miscellaneous fixes for 3.19
Get series with b4
b4 am [email protected]Versions newest first
- v1 Latest9 patches 9 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/9 | rcu: Remove CONFIG_RCU_CPU_STALL_VERBOSEDocumentation/ kernel/ lib/ +12 more | +1 | 0 replies | |
| 2/9 | compiler: Allow 1- and 2-byte smp_load_acquire() and smp_store_release()include/ | +1 | 0 replies | |
| 3/9 | drivers/md: Use rcu_dereference() for accessing rcu pointerdrivers/ | +4 | 11 replies | |
| 4/9 | dm: sparse: Annotate field with __rcu for checkingdrivers/ | +1 | 0 replies | |
| 5/9 | rcu: Add sparse check for RCU_INIT_POINTER()include/ | +1 | 0 replies | |
| 6/9 | rcu: Optimize cond_resched_rcu_qs()include/ | +2 | 0 replies | |
| 7/9 | rcu: More info about potential deadlocks with rcu_read_unlock()include/ | +3 | 0 replies | |
| 8/9 | rcu: Fix FIXME in rcu_tasks_kthread()kernel/ | +2 | 0 replies | |
| 9/9 | rcu: Provide counterpart to rcu_dereference() for non-RCU situationsinclude/ | +15 | 4 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.
Cover letter [PATCH tip/core/rcu 0/9] Miscellaneous fixes for 3.19
Hello!
This series provides miscellaneous fixes:
1. Removes the CONFIG_RCU_CPU_STALL_VERBOSE, so that RCU CPU stall
warnings are henceforth unconditionally verbose. (Another RCU Kconfig variable bites the dust!)
2. Allow 1- and 2-byte smp_load_acquire() and smp_store_release().
This has the side effect of removing support for pre-EV56 Alpha CPUs, and the official Alpha maintainers have thus far been silent on this issue.
3. Use rcu_dereference() for accessing struct mapped_device,
courtesy of Pranith Kumar.
4. Annotate the dm_table's ->map field with __rcu, courtesy of
Pranith Kumar.
5. Add sparse checking for use of RCU_INIT_POINTER() on a non-__rcu
pointer, courtesy of Pranith Kumar.
6. Prevent cond_resched_rcu_qs() from doing gratuitous call to
rcu_note_voluntary_context_switch().
7. Update the list of rcu_read_unlock() potential deadlocks, courtesy
of Oleg Nesterov.
8. Bind rcu_tasks_kthread() to housekeeping CPUs in CONFIG_NO_HZ_FULL
builds.
9. Provide lockless_dereference() for times when you want
rcu_dereference(), but without the sparse and lockdep-RCU noise.
Thanx, Paul
------------------------------------------------------------------------
b/Documentation/RCU/stallwarn.txt | 6 -- b/drivers/md/dm.c | 10 ++-- b/include/linux/compiler.h | 2 b/include/linux/rcupdate.h | 24 ++++++++-- b/kernel/rcu/tree_plugin.h | 13 ----- b/kernel/rcu/update.c | 3 - b/lib/Kconfig.debug | 12 ----- b/tools/testing/selftests/rcutorture/configs/rcu/TREE01 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE07 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08 | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T | 1 b/tools/testing/selftests/rcutorture/configs/rcu/TREE09 | 1 b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 3 - 19 files changed, 30 insertions(+), 54 deletions(-)