Messages in this thread | | | From | Will Deacon <> | Subject | [PATCH v4 00/10] Rework REFCOUNT_FULL using atomic_fetch_* operations | Date | Wed, 30 Oct 2019 14:30:25 +0000 |
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Hi all,
This is version four of the patches I previously posted here:
v1: https://lkml.kernel.org/r/20190802101000.12958-1-will@kernel.org v2: https://lkml.kernel.org/r/20190827163204.29903-1-will@kernel.org v3: https://lkml.kernel.org/r/20191007154703.5574-1-will@kernel.org
Changes since v3 include:
- Add description of racy behaviour include/linux/refcount.h - Fix saturation behaviour in refcount_sub_and_test() - Added Acks and Tested-bys
Cheers,
Will
Cc: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Jan Glauber <jglauber@marvell.com>
--->8
Will Deacon (10): lib/refcount: Define constants for saturation and max refcount values lib/refcount: Ensure integer operands are treated as signed lib/refcount: Remove unused refcount_*_checked() variants lib/refcount: Move bulk of REFCOUNT_FULL implementation into header lib/refcount: Improve performance of generic REFCOUNT_FULL code lib/refcount: Move saturation warnings out of line lib/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions refcount: Consolidate implementations of refcount_t lib/refcount: Remove unused 'refcount_error_report()' function drivers/lkdtm: Remove references to CONFIG_REFCOUNT_FULL
arch/Kconfig | 21 --- arch/arm/Kconfig | 1 - arch/arm64/Kconfig | 1 - arch/s390/configs/debug_defconfig | 1 - arch/x86/Kconfig | 1 - arch/x86/include/asm/asm.h | 6 - arch/x86/include/asm/refcount.h | 126 -------------- arch/x86/mm/extable.c | 49 ------ drivers/gpu/drm/i915/Kconfig.debug | 1 - drivers/misc/lkdtm/refcount.c | 11 +- include/linux/kernel.h | 7 - include/linux/refcount.h | 269 ++++++++++++++++++++++++----- kernel/panic.c | 11 -- lib/refcount.c | 255 +++------------------------ 14 files changed, 257 insertions(+), 503 deletions(-) delete mode 100644 arch/x86/include/asm/refcount.h
-- 2.24.0.rc0.303.g954a862665-goog
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