membarrier cleanups
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- v1 Latest8 patches 71 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/8 | membarrier: Document why membarrier() workskernel/ | +55 | 3 replies | |
| 2/8 | x86/mm: Handle unlazying membarrier core sync in the arch codearch/ include/ kernel/ | +46 | 4 replies | |
| 3/8 | membarrier: Remove membarrier_arch_switch_mm() prototype in core codeinclude/ | +0 | 2 replies | |
| 4/8 | membarrier: Make the post-switch-mm barrier explicitinclude/ kernel/ kernel/ | +31 | 26 replies | |
| 5/8 | membarrier, kthread: Use _ONCE accessors for task->mmfs/ kernel/ kernel/ | +6 | 3 replies | |
| 6/8 | powerpc/membarrier: Remove special barrier on mm switcharch/ arch/ | +0 | 1 reply | |
| 7/8 | membarrier: Remove arm (32) support for SYNC_COREarch/ | +0 | 27 replies | |
| 8/8 | membarrier: Rewrite sync_core_before_usermode() and improve documentationDocumentation/ arch/ arch/ +12 more | +75 | 16 replies |
Reviews trailers per patch
4 of 8 patches have a Reviewed-by or Acked-by.
| Patch | Nicholas Piggin | Russell King (Oracle) | Will Deacon | Mathieu Desnoyers |
|---|---|---|---|---|
| 1/8 | ||||
| 2/8 | ||||
| 3/8 | A-b | A-b | ||
| 4/8 | ||||
| 5/8 | A-b | |||
| 6/8 | ||||
| 7/8 | A-b | |||
| 8/8 | A-b | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 4 reviewers.
Cover letter [PATCH 0/8] membarrier cleanups
membarrier() is unnecessarily tangled with the core scheduler. Clean it up. While we're at it, remove the documentation and drop the pretence that SYNC_CORE can ever be a well-defined cross-arch operation.
Andy Lutomirski (8):
membarrier: Document why membarrier() works
x86/mm: Handle unlazying membarrier core sync in the arch code
membarrier: Remove membarrier_arch_switch_mm() prototype in core code
membarrier: Make the post-switch-mm barrier explicit membarrier, kthread: Use _ONCE accessors for task->mm powerpc/membarrier: Remove special barrier on mm switch
membarrier: Remove arm (32) support for SYNC_CORE
membarrier: Rewrite sync_core_before_usermode() and improve
documentation
.../membarrier-sync-core/arch-support.txt | 68 +++++------------ arch/arm/Kconfig | 1 - arch/arm64/include/asm/sync_core.h | 19 +++++ arch/powerpc/include/asm/membarrier.h | 27 ------- arch/powerpc/include/asm/sync_core.h | 14 ++++ arch/powerpc/mm/mmu_context.c | 2 - arch/x86/Kconfig | 1 - arch/x86/include/asm/sync_core.h | 7 +- arch/x86/kernel/alternative.c | 2 +- arch/x86/kernel/cpu/mce/core.c | 2 +- arch/x86/mm/tlb.c | 54 ++++++++++--- drivers/misc/sgi-gru/grufault.c | 2 +- drivers/misc/sgi-gru/gruhandles.c | 2 +- drivers/misc/sgi-gru/grukservices.c | 2 +- fs/exec.c | 2 +- include/linux/sched/mm.h | 42 +++++----- include/linux/sync_core.h | 21 ----- init/Kconfig | 3 - kernel/kthread.c | 16 +--- kernel/sched/core.c | 44 +++-------- kernel/sched/membarrier.c | 76 +++++++++++++++++-- 21 files changed, 210 insertions(+), 197 deletions(-) create mode 100644 arch/arm64/include/asm/sync_core.h delete mode 100644 arch/powerpc/include/asm/membarrier.h create mode 100644 arch/powerpc/include/asm/sync_core.h delete mode 100644 include/linux/sync_core.h
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2.31.1