Re: [PATCH v7] lib: optimize cpumask_local_spread()

Hi Dave, Apologies for the late reply. 在 2020/12/1 1:08, Dave Hansen 写道: { - int cpu, hk_flags; + static DEFINE_SPINLOCK(spread_lock); + static bool used[MAX_NUMNODES]; >>> >>> I thought I mentioned this last time. How large is this array? How >>> large would it be if it

Re: [PATCH v7] lib: optimize cpumask_local_spread()

>>> { >>> - int cpu, hk_flags; >>> + static DEFINE_SPINLOCK(spread_lock); >>> + static bool used[MAX_NUMNODES]; >> >> I thought I mentioned this last time. How large is this array? How >> large would it be if it were a nodemask_t? Would this be less code if > > Apologies that I forgot to

Re: [PATCH v7] lib: optimize cpumask_local_spread()

Hi Dave, Apologies for later reply. 在 2020/11/21 1:48, Dave Hansen 写道: > On 11/17/20 6:54 PM, Shaokun Zhang wrote: >> From: Yuqi Jin >> >> In multi-processor and NUMA system, I/O driver will find cpu cores that >> which shall be bound IRQ. When cpu cores in the local numa have been >> used up, i

Re: [PATCH v7] lib: optimize cpumask_local_spread()

On 11/17/20 6:54 PM, Shaokun Zhang wrote: > From: Yuqi Jin > > In multi-processor and NUMA system, I/O driver will find cpu cores that > which shall be bound IRQ. When cpu cores in the local numa have been > used up, it is better to find the node closest to the local numa node > for performance,