On Sat, May 30, 2020 at 06:11:17PM -0400, Brian Gerst wrote: > The core percpu operations already have a switch on the width of the > data type, which resulted in an extra amount of dead code being > generated with the x86 operations having another switch. This patch set > rewrites the x86 ops to remove the switch. Additional cleanups are to > use named assembly operands, and to cast variables to the width used in > the assembly to make Clang happy. > > Changes from v1: > - Add separate patch for XADD constraint fix > - Fixed sparse truncation warning > - Add cleanup of percpu_stable_op() > - Add patch to Remove PER_CPU() > > Brian Gerst (10): > x86/percpu: Introduce size abstraction macros > x86/percpu: Clean up percpu_to_op() > x86/percpu: Clean up percpu_from_op() > x86/percpu: Clean up percpu_add_op() > x86/percpu: Remove "e" constraint from XADD > x86/percpu: Clean up percpu_add_return_op() > x86/percpu: Clean up percpu_xchg_op() > x86/percpu: Clean up percpu_cmpxchg_op() > x86/percpu: Clean up percpu_stable_op() > x86/percpu: Remove unused PER_CPU() macro > > arch/x86/include/asm/percpu.h | 510 ++++++++++++---------------------- > 1 file changed, 172 insertions(+), 338 deletions(-)
Nice! Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org>
