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Linus Torvalds 5dfb75e842 RCU Changes for 6.4: 
o  MAINTAINERS files additions and changes.
  o  Fix hotplug warning in nohz code.
  o  Tick dependency changes by Zqiang.
  o  Lazy-RCU shrinker fixes by Zqiang.
  o  rcu-tasks stall reporting improvements by Neeraj.
  o  Initial changes for renaming of k[v]free_rcu() to its new k[v]free_rcu_mightsleep()
     name for robustness.
  o  Documentation Updates:
  o  Significant changes to srcu_struct size.
  o  Deadlock detection for srcu_read_lock() vs synchronize_srcu() from Boqun.
  o  rcutorture and rcu-related tool, which are targeted for v6.4 from Boqun's tree.
  o  Other misc changes.
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Merge tag 'rcu.6.4.april5.2023.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux

Pull RCU updates from Joel Fernandes:

 - Updates and additions to MAINTAINERS files, with Boqun being added to
   the RCU entry and Zqiang being added as an RCU reviewer.

   I have also transitioned from reviewer to maintainer; however, Paul
   will be taking over sending RCU pull-requests for the next merge
   window.

 - Resolution of hotplug warning in nohz code, achieved by fixing
   cpu_is_hotpluggable() through interaction with the nohz subsystem.

   Tick dependency modifications by Zqiang, focusing on fixing usage of
   the TICK_DEP_BIT_RCU_EXP bitmask.

 - Avoid needless calls to the rcu-lazy shrinker for CONFIG_RCU_LAZY=n
   kernels, fixed by Zqiang.

 - Improvements to rcu-tasks stall reporting by Neeraj.

 - Initial renaming of k[v]free_rcu() to k[v]free_rcu_mightsleep() for
   increased robustness, affecting several components like mac802154,
   drbd, vmw_vmci, tracing, and more.

   A report by Eric Dumazet showed that the API could be unknowingly
   used in an atomic context, so we'd rather make sure they know what
   they're asking for by being explicit:

      https://lore.kernel.org/all/20221202052847.2623997-1-edumazet@google.com/

 - Documentation updates, including corrections to spelling,
   clarifications in comments, and improvements to the srcu_size_state
   comments.

 - Better srcu_struct cache locality for readers, by adjusting the size
   of srcu_struct in support of SRCU usage by Christoph Hellwig.

 - Teach lockdep to detect deadlocks between srcu_read_lock() vs
   synchronize_srcu() contributed by Boqun.

   Previously lockdep could not detect such deadlocks, now it can.

 - Integration of rcutorture and rcu-related tools, targeted for v6.4
   from Boqun's tree, featuring new SRCU deadlock scenarios, test_nmis
   module parameter, and more

 - Miscellaneous changes, various code cleanups and comment improvements

* tag 'rcu.6.4.april5.2023.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux: (71 commits)
  checkpatch: Error out if deprecated RCU API used
  mac802154: Rename kfree_rcu() to kvfree_rcu_mightsleep()
  rcuscale: Rename kfree_rcu() to kfree_rcu_mightsleep()
  ext4/super: Rename kfree_rcu() to kfree_rcu_mightsleep()
  net/mlx5: Rename kfree_rcu() to kfree_rcu_mightsleep()
  net/sysctl: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
  lib/test_vmalloc.c: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
  tracing: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
  misc: vmw_vmci: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
  drbd: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
  rcu: Protect rcu_print_task_exp_stall() ->exp_tasks access
  rcu: Avoid stack overflow due to __rcu_irq_enter_check_tick() being kprobe-ed
  rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan()
  rcu: Permit start_poll_synchronize_rcu_expedited() to be invoked early
  rcu: Remove never-set needwake assignment from rcu_report_qs_rdp()
  rcu: Register rcu-lazy shrinker only for CONFIG_RCU_LAZY=y kernels
  rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check
  rcu: Fix set/clear TICK_DEP_BIT_RCU_EXP bitmask race
  rcu/trace: use strscpy() to instead of strncpy()
  tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
  ...
2023-04-24 12:16:14 -07:00
..
Kconfig kvm: Remove "select SRCU" 2023-04-05 13:47:42 +00:00
main.c KVM/riscv changes for 6.3 2023-02-15 12:33:28 -05:00
Makefile RISC-V: KVM: Add SBI PMU extension support 2023-02-07 20:35:53 +05:30
mmu.c KVM/riscv changes for 6.3 2023-02-15 12:33:28 -05:00
tlb.c ARM: 2023-02-25 11:30:21 -08:00
vcpu_exit.c RISC-V: KVM: Redirect illegal instruction traps to guest 2023-02-07 20:35:28 +05:30
vcpu_fp.c RISC-V: KVM: Improve ISA extension by using a bitmap 2022-07-29 17:14:11 +05:30
vcpu_insn.c RISC-V: KVM: Implement trap & emulate for hpmcounters 2023-02-07 20:36:01 +05:30
vcpu_pmu.c RISC-V: KVM: Support firmware events 2023-02-07 20:36:06 +05:30
vcpu_sbi_base.c RISC-V: KVM: Modify SBI extension handler to return SBI error code 2023-02-07 20:35:45 +05:30
vcpu_sbi_hsm.c RISC-V: KVM: Modify SBI extension handler to return SBI error code 2023-02-07 20:35:45 +05:30
vcpu_sbi_pmu.c RISC-V: KVM: Add SBI PMU extension support 2023-02-07 20:35:53 +05:30
vcpu_sbi_replace.c RISC-V: KVM: Increment firmware pmu events 2023-02-07 20:36:08 +05:30
vcpu_sbi_v01.c RISC-V: KVM: Modify SBI extension handler to return SBI error code 2023-02-07 20:35:45 +05:30
vcpu_sbi.c RISC-V: KVM: Add SBI PMU extension support 2023-02-07 20:35:53 +05:30
vcpu_switch.S RISC-V: KVM: Refine __kvm_riscv_switch_to() implementation 2022-03-11 19:02:22 +05:30
vcpu_timer.c riscv/kvm: Fix VM hang in case of timer delta being zero. 2023-03-17 13:32:54 +05:30
vcpu.c RISC-V: KVM: Add skeleton support for perf 2023-02-07 20:35:51 +05:30
vm.c RISC-V: KVM: Make kvm_riscv_guest_timer_init a void function 2022-07-29 17:14:26 +05:30
vmid.c KVM: RISC-V: Tag init functions and data with __init, __ro_after_init 2022-12-29 15:41:18 -05:00