aarch64 lacks HP_TIMING support in glibc
Adhemerval Zanella
adhemerval.zanella@linaro.org
Tue Jun 22 19:53:44 GMT 2021
On 22/06/2021 16:27, Andreas Schwab wrote:
> On Jun 22 2021, Adhemerval Zanella via Libc-alpha wrote:
>
>> It should be possible support hp-timing.h on aarch64 to use cntvct_el0
>> if the minimum supported kernel also supports it (3.2). Afaik the
>> hp-timing will be used only for LD_DEBUG=statistics, so default usage
>> would not be penalized.
>
> But then, why is it such a big deal?
Do you mean support hp-timing on aarch64 or eventually trap on kernel
on such usage?
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