In a few places bitmap API is called with such a combination of parameters that makes the call unneeded, or there's a trivial cheaper alternative. For example, cpumask_copy(dst, src) where dst == src is simply a no-op. This series addresses such cases spotted on x86_64 with LTP. All the patches are independent and may be applied separately in corresponding subsystems. Or I can take them in bitmap branch, if it's more convenient. Yury Norov (6): smp: optimize smp_call_function_many_cond() sched/topology: optimize topology_span_sane() driver core: cpu: optimize print_cpus_isolated() genirq: optimze irq_do_set_affinity() cgroup/cpuset: optimize cpuset_mems_allowed_intersects() tick/common: optimize cpumask_equal() usage drivers/base/cpu.c | 6 ++++-- kernel/cgroup/cpuset.c | 3 +++ kernel/irq/manage.c | 3 ++- kernel/sched/topology.c | 2 +- kernel/smp.c | 5 ++++- kernel/time/tick-common.c | 15 +++++++++++---- 6 files changed, 25 insertions(+), 9 deletions(-) -- 2.40.1
