On Tue, Aug 30, 2022 at 02:48:52PM -0700, Suren Baghdasaryan wrote: > From: Kent Overstreet <kent.overstreet@xxxxxxxxx> > > This patch adds lib/lazy-percpu-counter.c, which implements counters > that start out as atomics, but lazily switch to percpu mode if the > update rate crosses some threshold (arbitrarily set at 256 per second). > > Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx> Why not use percpu_counter? It has a per-cpu counter that is synchronised when a batch threshold (default 32) is exceeded and can explicitly sync the counters when required assuming the synchronised count is only needed when reading debugfs. -- Mel Gorman SUSE Labs
