On Wed, Feb 23, 2022 at 10:50:19PM +0000, David Laight wrote: > From: 'Andy Shevchenko' > > Sent: 23 February 2022 22:30 > > On Wed, Feb 23, 2022 at 09:44:32PM +0000, David Laight wrote: > > > From: Andy Shevchenko > > > > Sent: 23 February 2022 18:54 ... > > Either way it wastes cycles, the outcome depends on the actual distribution of > > the interrupts across the bitmap. If it gathered closer to the beginning of the > > bitmap, my code wins, otherwise the original ones. > > The loop in bitmap_empty() will kill you - even if the first word in non-zero. What loop? Did you really look into implementation of bitmap_empty()? -- With Best Regards, Andy Shevchenko
