Hi Thomas,
On 2021/9/23 下午10:33, Zhou Yanjie wrote:
Hi Thomas,
On 2021/9/21 下午11:57, Thomas Bogendoerfer wrote:
On Tue, Sep 14, 2021 at 05:30:14PM +0800, Feiyang Chen wrote:
On Tue, 14 Sept 2021 at 16:54, Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
wrote:
在 2021/9/14 2:50, Feiyang Chen 写道:
Convert MIPS to use the generic entry infrastructure from
kernel/entry/*.
v2: Use regs->regs[27] to mark whether to restore all registers in
handle_sys and enable IRQ stack.
Hi Feiyang,
Thanks for your patch, could you please expand how could this improve
the performance?
Hi, Jiaxun,
We always restore all registers in handle_sys in the v1 of the
patchset. Since regs->regs[27] is marked where we need to restore all
registers, now we simply use it as the return value of do_syscall to
determine whether we can only restore partial registers in handle_sys.
can people, who provided performance numbers for v1 do the same for v2 ?
Sure, I will test the v2 in the next few days.
Sorry for the delay, It took a lot of time to migrate the environment to
my new computer, here is the results:
Score Without Patches Score With Patches Performance Change SoC Model
105.9 102.1 -3.6% JZ4775
132.4 124.1 -6.3% JZ4780(SMP off)
170.2 155.7 -8.5% JZ4780(SMP on)
101.3 91.5 -9.7% X1000E
187.1 179.4 -4.1% X1830
324.9 314.3 -3.3% X2000(SMT off)
394.6 373.9 -5.2% X2000(SMT off)
Compared with the V1 version, there are some improvements, but the
performance loss is still a bit obvious
Thanks and best regards!
Thanks and best regards!
Thomas,
