Messages in this thread | | | Subject | Re: [PATCH v8 10/18] RISC-V: Init and Halt Code | From | Dmitriy Cherkasov <> | Date | Sat, 16 Sep 2017 14:38:26 -0700 |
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On 09/16/2017 06:28 AM, Daniel Lezcano wrote: > On 16/09/2017 08:23, Dmitriy Cherkasov wrote: >> On 09/13/2017 11:15 AM, Daniel Lezcano wrote:
>>> >>> Where is get_cycles64() ? >> >> This is in asm/timex.h. Should this be split into a separate asm header >> ala arm64? > > No, it is fine but may be it is get_cycles(), no get_cycles64(), right? >
get_cycles() returns a 32 or 64-bit value depending on machine register width, using one assembly instruction to retrieve it.
get_cycles64() always returns a 64-bit value at the expense of a few more instructions on 32-bit systems.
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