On Tue, 31 Jul 2018, Andy Lutomirski wrote:
> On Tue, Jul 31, 2018 at 2:22 PM, Thomas Gleixner wrote:
> >> u64 start = __vdso_read_art_ns();
> >
> > Errm. No. You can't read ART. ART is only used by decives to which it is
> > distributed. You can only read TSC here and convert that to nsecs.
>
>
On Tue, Jul 31, 2018 at 2:22 PM, Thomas Gleixner wrote:
> On Mon, 23 Jul 2018, Andy Lutomirski wrote:
>> On 07/23/2018 05:55 AM, Fenghua Yu wrote:
>> > static void __init init_vdso_funcs_data(void)
>> > {
>> > + struct system_counterval_t sys_counterval;
>> > +
>> > if (static_cpu_has(
On Mon, 23 Jul 2018, Andy Lutomirski wrote:
> On 07/23/2018 05:55 AM, Fenghua Yu wrote:
> > static void __init init_vdso_funcs_data(void)
> > {
> > + struct system_counterval_t sys_counterval;
> > +
> > if (static_cpu_has(X86_FEATURE_MOVDIRI))
> > vdso_funcs_data.movdiri_sup
On Mon, Jul 23, 2018 at 7:11 PM, Andy Lutomirski wrote:
> On 07/23/2018 05:55 AM, Fenghua Yu wrote:
>>
>> User wants to query if user wait instructions (umonitor, umwait, and
>> tpause) are supported and use the instructions. The vDSO functions
>> provides fast interface for user to check the supp
On 07/23/2018 05:55 AM, Fenghua Yu wrote:
User wants to query if user wait instructions (umonitor, umwait, and
tpause) are supported and use the instructions. The vDSO functions
provides fast interface for user to check the support and use the
instructions.
waitpkg_supported and its alias __vdso
User wants to query if user wait instructions (umonitor, umwait, and
tpause) are supported and use the instructions. The vDSO functions
provides fast interface for user to check the support and use the
instructions.
waitpkg_supported and its alias __vdso_waitpkg_supported check if
user wait instru
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