Re: [PATCH v2] lib: optimize cpumask_next_and()

Hi Clement, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc6 next-20171018] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH v2] lib: optimize cpumask_next_and()

Hi Clement, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc6 next-20171018] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH v2] lib: optimize cpumask_next_and()

Hi Clement, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc6 next-20171018] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: [PATCH v2] lib: optimize cpumask_next_and()

Hi Clement, [auto build test ERROR on linus/master] [also build test ERROR on v4.14-rc6 next-20171018] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url:

Re: Re [PATCH v2] lib: optimize cpumask_next_and()

On Wed, Oct 25, 2017 at 06:50:14PM +0300, Yury Norov wrote: > On Wed, Oct 25, 2017 at 05:28:41PM +0200, Clement Courbet wrote: > > Thanks for the comments Yury. > > > > > But I'd like also to keep _find_next_bit() consistent with > > > _find_next_bit_le() > > > > Not sure I understand what

Re: Re [PATCH v2] lib: optimize cpumask_next_and()

On Wed, Oct 25, 2017 at 06:50:14PM +0300, Yury Norov wrote: > On Wed, Oct 25, 2017 at 05:28:41PM +0200, Clement Courbet wrote: > > Thanks for the comments Yury. > > > > > But I'd like also to keep _find_next_bit() consistent with > > > _find_next_bit_le() > > > > Not sure I understand what

Re: Re [PATCH v2] lib: optimize cpumask_next_and()

On Wed, Oct 25, 2017 at 05:28:41PM +0200, Clement Courbet wrote: > Thanks for the comments Yury. > > > But I'd like also to keep _find_next_bit() consistent with > > _find_next_bit_le() > > Not sure I understand what you're suggesting here: Do you want a > find_next_and_bit_le() or do you want

Re: Re [PATCH v2] lib: optimize cpumask_next_and()

On Wed, Oct 25, 2017 at 05:28:41PM +0200, Clement Courbet wrote: > Thanks for the comments Yury. > > > But I'd like also to keep _find_next_bit() consistent with > > _find_next_bit_le() > > Not sure I understand what you're suggesting here: Do you want a > find_next_and_bit_le() or do you want

Re [PATCH v2] lib: optimize cpumask_next_and()

Thanks for the comments Yury. > But I'd like also to keep _find_next_bit() consistent with > _find_next_bit_le() Not sure I understand what you're suggesting here: Do you want a find_next_and_bit_le() or do you want to make _find_next_bit_le() more like _find_next_bit() ? In the latter case we

Re [PATCH v2] lib: optimize cpumask_next_and()

Thanks for the comments Yury. > But I'd like also to keep _find_next_bit() consistent with > _find_next_bit_le() Not sure I understand what you're suggesting here: Do you want a find_next_and_bit_le() or do you want to make _find_next_bit_le() more like _find_next_bit() ? In the latter case we

Re: [PATCH v2] lib: optimize cpumask_next_and()

On Tue, Oct 24, 2017 at 12:51:59PM +0200, Clement Courbet wrote: > We've measured that we spend ~0.6% of sys cpu time in cpumask_next_and(). > It's essentially a joined iteration in search for a non-zero bit, which > is currently implemented as a lookup join (find a nonzero bit on the > lhs,

Re: [PATCH v2] lib: optimize cpumask_next_and()

On Tue, Oct 24, 2017 at 12:51:59PM +0200, Clement Courbet wrote: > We've measured that we spend ~0.6% of sys cpu time in cpumask_next_and(). > It's essentially a joined iteration in search for a non-zero bit, which > is currently implemented as a lookup join (find a nonzero bit on the > lhs,

RE: [PATCH v2] lib: optimize cpumask_next_and()

Reviewed-by: Matthew Wilcox > -Original Message- > From: Clement Courbet [mailto:cour...@google.com] > Sent: Tuesday, October 24, 2017 6:52 AM > To: Arnd Bergmann ; Rasmus Villemoes > ; Andrew Morton

RE: [PATCH v2] lib: optimize cpumask_next_and()

Reviewed-by: Matthew Wilcox > -Original Message- > From: Clement Courbet [mailto:cour...@google.com] > Sent: Tuesday, October 24, 2017 6:52 AM > To: Arnd Bergmann ; Rasmus Villemoes > ; Andrew Morton ; > Matthew Wilcox ; Yury Norov > > Cc: Clement Courbet ; Ingo Molnar > ;