Hi Santosh,
Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
Hi Christophe,
Christophe Leroy writes:
__get_datapage() is only a few instructions to retrieve the
address of the page where the kernel stores data to the VDSO.
By inlining this function into its users, a bl/blr pair and
a
Christophe Leroy writes:
> Le 13/09/2019 à 15:31, Santosh Sivaraj a écrit :
>> Christophe Leroy writes:
>>
>>> Hi Santosh,
>>>
>>> Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
Hi Christophe,
Christophe Leroy writes:
> __get_datapage() is only a few instructions to
Le 13/09/2019 à 15:31, Santosh Sivaraj a écrit :
Christophe Leroy writes:
Hi Santosh,
Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
Hi Christophe,
Christophe Leroy writes:
__get_datapage() is only a few instructions to retrieve the
address of the page where the kernel stores data
Christophe Leroy writes:
> Hi Santosh,
>
> Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
>> Hi Christophe,
>>
>> Christophe Leroy writes:
>>
>>> __get_datapage() is only a few instructions to retrieve the
>>> address of the page where the kernel stores data to the VDSO.
>>>
>>> By inlining
Hi Santosh,
Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
Hi Christophe,
Christophe Leroy writes:
__get_datapage() is only a few instructions to retrieve the
address of the page where the kernel stores data to the VDSO.
By inlining this function into its users, a bl/blr pair and
a
Hi Christophe,
Christophe Leroy writes:
> __get_datapage() is only a few instructions to retrieve the
> address of the page where the kernel stores data to the VDSO.
>
> By inlining this function into its users, a bl/blr pair and
> a mflr/mtlr pair is avoided, plus a few reg moves.
>
> The
__get_datapage() is only a few instructions to retrieve the
address of the page where the kernel stores data to the VDSO.
By inlining this function into its users, a bl/blr pair and
a mflr/mtlr pair is avoided, plus a few reg moves.
The improvement is noticeable (about 55 nsec/call on an 8xx)
