On Thu, 2009-11-26 at 21:15 +0300, Sergei Shtylyov wrote: > Hello, I wrote: > > >> From: Wu Zhangjin <wuzhangjin@xxxxxxxxx> > > >> (This v5 revision incorporates with the feedbacks from Ingo.) > > >> This patch adds a cnt32_to_63() and MIPS c0 count based sched_clock(), > >> which provides high resolution. and also, one new kernel option > >> (HR_SCHED_CLOCK) is added to enable/disable this sched_clock(). > > >> Without it, the Ftrace for MIPS will give useless timestamp information. > > >> Because cnt32_to_63() needs to be called at least once per half period > >> to work properly, Differ from the old version, this v2 revision set up a > >> kernel timer to ensure the requirement of some MIPSs which have short c0 > >> count period. > > >> Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx> > > >> diff --git a/arch/mips/kernel/csrc-r4k-hres.c > >> b/arch/mips/kernel/csrc-r4k-hres.c > >> new file mode 100644 > >> index 0000000..2fe8be7 > >> --- /dev/null > >> +++ b/arch/mips/kernel/csrc-r4k-hres.c > > > > > > I don't think this is really good name for this file (one might think > > that this is another implementation of clocksource instead of some > > sched_clock() code tied to this particular clocksource), and I don't > > Seriously, if this file have to live a life of its own, name it like > sched-r4k.c but not the way you named it -- this is not another clocksource > module... > > WBR, Sergei okay, later. Thanks, Wu Zhangjin
