On Thursday, June 04, 2015 12:06:36 PM Viresh Kumar wrote: > On 04-06-15, 14:25, [email protected] wrote: > > From: Tang Yuantian <[email protected]> > > > > Each time the CPU switches its frequency, the clock nodes in > > DTS are walked through to find proper clock source. This is > > very time-consuming, for example, it is up to 500+ us on T4240. > > Besides, switching time varies from clock to clock. > > To optimize this, each input clock of CPU is buffered, so that > > it can be picked up instantly when needed. > > > > Since for each CPU each input clock is stored in a pointer > > which takes 4 or 8 bytes memory and normally there are several > > input clocks per CPU, that will not take much memory as well. > > Not sure how it got included in this form in the first place. :) > > > Signed-off-by: Tang Yuantian <[email protected]> > > --- > > drivers/cpufreq/qoriq-cpufreq.c | 32 +++++++++++++++++++++----------- > > 1 file changed, 21 insertions(+), 11 deletions(-) > > Acked-by: Viresh Kumar <[email protected]>
Queued up for 4.2, thanks! -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
