I noticed that the O(n log n) behaviour of free_lpi_range could easily be made O(n) (patch 4), though I don't suppose n is ever large enough to actually matter. While there, I also stumbled on two other micro-optimizations (2 and 3).
Then while writing the commit log for the last patch, I noticed that the cmp callback I was removing was actually buggy, so I went back and added a patch in front suitable for -stable. I'll leave it to others to decide if it's important enough for that. Please note that this is only compile-tested. Rasmus Villemoes (4): irqchip/gic-v3-its: fix comparison logic in lpi_range_cmp irqchip/gic-v3-its: move allocation outside mutex irqchip/gic-v3-its: drop redundant initialization in mk_lpi_range irqchip/gic-v3-its: make free_lpi_range a little cheaper drivers/irqchip/irq-gic-v3-its.c | 75 +++++++++++++++----------------- 1 file changed, 36 insertions(+), 39 deletions(-) -- 2.20.1
