Re: [PATCH v3 0/4] sched_clock: Optimize and avoid deadlock during read from NMI

2015-02-09 Thread Stephen Boyd
On 02/08/15 04:09, Daniel Thompson wrote: > On 05/02/15 17:05, Daniel Thompson wrote: >> On 05/02/15 00:50, Stephen Boyd wrote: >>> On 01/30, Daniel Thompson wrote: This patchset optimizes the generic sched_clock implementation to significantly reduce the data cache profile. It also makes

Re: [PATCH v3 0/4] sched_clock: Optimize and avoid deadlock during read from NMI

2015-02-08 Thread Daniel Thompson
On 05/02/15 17:05, Daniel Thompson wrote: > On 05/02/15 00:50, Stephen Boyd wrote: >> On 01/30, Daniel Thompson wrote: >>> This patchset optimizes the generic sched_clock implementation to >>> significantly reduce the data cache profile. It also makes it safe to call >>> sched_clock() from NMI (or

Re: [PATCH v3 0/4] sched_clock: Optimize and avoid deadlock during read from NMI

2015-02-05 Thread Daniel Thompson
On 05/02/15 00:50, Stephen Boyd wrote: > On 01/30, Daniel Thompson wrote: >> This patchset optimizes the generic sched_clock implementation to >> significantly reduce the data cache profile. It also makes it safe to call >> sched_clock() from NMI (or FIQ on ARM). >> >> The data cache profile of sch

Re: [PATCH v3 0/4] sched_clock: Optimize and avoid deadlock during read from NMI

2015-02-04 Thread Stephen Boyd
On 01/30, Daniel Thompson wrote: > This patchset optimizes the generic sched_clock implementation to > significantly reduce the data cache profile. It also makes it safe to call > sched_clock() from NMI (or FIQ on ARM). > > The data cache profile of sched_clock() in both the original code and > my

[PATCH v3 0/4] sched_clock: Optimize and avoid deadlock during read from NMI

2015-01-30 Thread Daniel Thompson
This patchset optimizes the generic sched_clock implementation to significantly reduce the data cache profile. It also makes it safe to call sched_clock() from NMI (or FIQ on ARM). The data cache profile of sched_clock() in both the original code and my previous patch was somewhere between 2 and 3