Hi, All On Mon, 2009-11-09 at 23:31 +0800, Wu Zhangjin wrote: [...] > > And to support module tracing, we need to enable -mlong-calls for the > long call from modules space to kernel space. -mlong-calls load the > address of _mcount to a register and then jump to it, so, the address is > allowed to be 32bit long, but without -mlong-calls, for the instruction > "jal _mcount" only left 26bit for the address of _mcount, which is not > enough for jumping from the module space to kernel space. [...] > diff --git a/arch/mips/Makefile b/arch/mips/Makefile [...] > +else > +cflags-y := -mlong-calls > +endif Just made dynamic ftracer work without the above patch. Will send it out as v8 later. any more feedbacks to this v7 patchset? Thanks & Regards, Wu Zhangjin
