Improve objpool (used heavily in kretprobe hot path) performance with two improvements: - inlining performance critical objpool_push()/objpool_pop() operations; - avoiding re-calculating relatively expensive nr_possible_cpus(). These opportunities were found when benchmarking and profiling kprobes and kretprobes with BPF-based benchmarks. See individual patches for details and results. Andrii Nakryiko (2): objpool: enable inlining objpool_push() and objpool_pop() operations objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids include/linux/objpool.h | 105 +++++++++++++++++++++++++++++++++++-- lib/objpool.c | 112 +++------------------------------------- 2 files changed, 107 insertions(+), 110 deletions(-) -- 2.43.0
