Re: [PATCH V2] MIPS: perf: Add hardware perf events support for new Loongson-3

[Thomas Bogendoerfer <tsbogend@alpha.franken.de>]

On Thu, Apr 30, 2020 at 05:42:43PM +0800, Huacai Chen wrote:
> On Thu, Apr 30, 2020 at 4:16 PM Thomas Bogendoerfer
> <tsbogend@alpha.franken.de> wrote:
> > that is fine. Could you check how much size increase you get for
> > a non loongson64 target with your patch ?
> I have build an IP28 kernel (ip28_defconfig+perf):
> 
> size of vmlinux with this perf patch: 10913440
> size of vmlinux without this perf patch:10913296
> 
> readelf -a vmlinux with this perf patch:
>   Type           Offset             VirtAddr           PhysAddr
>                  FileSiz            MemSiz              Flags  Align
>   LOAD           0x0000000000001000 0xa800000020004000 0xa800000020004000
>                  0x0000000000800c0c 0x0000000000830dc0  RWE    0x1000
>   NOTE           0x000000000070d020 0xa800000020710020 0xa800000020710020
>                  0x000000000000003c 0x000000000000003c  R      0x4
> 
> readelf -a vmlinux without this perf patch:
>   Type           Offset             VirtAddr           PhysAddr
>                  FileSiz            MemSiz              Flags  Align
>   LOAD           0x0000000000001000 0xa800000020004000 0xa800000020004000
>                  0x0000000000800c0c 0x0000000000830dc0  RWE    0x1000
>   NOTE           0x000000000070cff0 0xa80000002070fff0 0xa80000002070fff0
>                  0x000000000000003c 0x000000000000003c  R      0x4

this looks the same, are you sure you used the right images ?

Nevertheless it's not much. I've applied your new patch. Thank you
for checking.

Thomas.

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