2023-05-23 10:41:59

by Huacai Chen

[permalink] [raw]
Subject: Re: [PATCH v2] perf symbol: Add LoongArch case in get_plt_sizes()

Acked-by: Huacai Chen <[email protected]>

On Tue, May 23, 2023 at 5:57 PM Tiezhu Yang <[email protected]> wrote:
>
> We can see the following definitions in bfd/elfnn-loongarch.c:
>
> #define PLT_HEADER_INSNS 8
> #define PLT_HEADER_SIZE (PLT_HEADER_INSNS * 4)
>
> #define PLT_ENTRY_INSNS 4
> #define PLT_ENTRY_SIZE (PLT_ENTRY_INSNS * 4)
>
> so plt header size is 32 and plt entry size is 16 on LoongArch,
> let us add LoongArch case in get_plt_sizes().
>
> Link: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=bfd/elfnn-loongarch.c
> Signed-off-by: Tiezhu Yang <[email protected]>
> ---
>
> v2: Add EM_LOONGARCH definition to avoid build error
>
> tools/perf/util/symbol-elf.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
> index b2ed9cc..b3dbf6c 100644
> --- a/tools/perf/util/symbol-elf.c
> +++ b/tools/perf/util/symbol-elf.c
> @@ -35,6 +35,10 @@
> #define EM_AARCH64 183 /* ARM 64 bit */
> #endif
>
> +#ifndef EM_LOONGARCH
> +#define EM_LOONGARCH 258
> +#endif
> +
> #ifndef ELF32_ST_VISIBILITY
> #define ELF32_ST_VISIBILITY(o) ((o) & 0x03)
> #endif
> @@ -411,6 +415,10 @@ static bool get_plt_sizes(struct dso *dso, GElf_Ehdr *ehdr, GElf_Shdr *shdr_plt,
> *plt_header_size = 32;
> *plt_entry_size = 16;
> return true;
> + case EM_LOONGARCH:
> + *plt_header_size = 32;
> + *plt_entry_size = 16;
> + return true;
> case EM_SPARC:
> *plt_header_size = 48;
> *plt_entry_size = 12;
> --
> 2.1.0
>
>


2023-06-08 07:12:09

by Tiezhu Yang

[permalink] [raw]
Subject: Re: [PATCH v2] perf symbol: Add LoongArch case in get_plt_sizes()

Hi Arnaldo,

On 05/23/2023 06:26 PM, Huacai Chen wrote:
> Acked-by: Huacai Chen <[email protected]>
>
> On Tue, May 23, 2023 at 5:57 PM Tiezhu Yang <[email protected]> wrote:
>>
>> We can see the following definitions in bfd/elfnn-loongarch.c:
>>
>> #define PLT_HEADER_INSNS 8
>> #define PLT_HEADER_SIZE (PLT_HEADER_INSNS * 4)
>>
>> #define PLT_ENTRY_INSNS 4
>> #define PLT_ENTRY_SIZE (PLT_ENTRY_INSNS * 4)
>>
>> so plt header size is 32 and plt entry size is 16 on LoongArch,
>> let us add LoongArch case in get_plt_sizes().
>>
>> Link: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=bfd/elfnn-loongarch.c
>> Signed-off-by: Tiezhu Yang <[email protected]>
>> ---
>>
>> v2: Add EM_LOONGARCH definition to avoid build error
>>
>> tools/perf/util/symbol-elf.c | 8 ++++++++
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
>> index b2ed9cc..b3dbf6c 100644
>> --- a/tools/perf/util/symbol-elf.c
>> +++ b/tools/perf/util/symbol-elf.c
>> @@ -35,6 +35,10 @@
>> #define EM_AARCH64 183 /* ARM 64 bit */
>> #endif
>>
>> +#ifndef EM_LOONGARCH
>> +#define EM_LOONGARCH 258
>> +#endif
>> +
>> #ifndef ELF32_ST_VISIBILITY
>> #define ELF32_ST_VISIBILITY(o) ((o) & 0x03)
>> #endif
>> @@ -411,6 +415,10 @@ static bool get_plt_sizes(struct dso *dso, GElf_Ehdr *ehdr, GElf_Shdr *shdr_plt,
>> *plt_header_size = 32;
>> *plt_entry_size = 16;
>> return true;
>> + case EM_LOONGARCH:
>> + *plt_header_size = 32;
>> + *plt_entry_size = 16;
>> + return true;
>> case EM_SPARC:
>> *plt_header_size = 48;
>> *plt_entry_size = 12;
>> --
>> 2.1.0

Are you OK with this change?
Could you please pick it up in your tree?

Thanks,
Tiezhu


2023-06-21 04:54:55

by Tiezhu Yang

[permalink] [raw]
Subject: Re: [PATCH v2] perf symbol: Add LoongArch case in get_plt_sizes()



On 06/08/2023 03:01 PM, Tiezhu Yang wrote:
> Hi Arnaldo,
>
> On 05/23/2023 06:26 PM, Huacai Chen wrote:
>> Acked-by: Huacai Chen <[email protected]>
>>
>> On Tue, May 23, 2023 at 5:57 PM Tiezhu Yang <[email protected]>
>> wrote:
>>>
>>> We can see the following definitions in bfd/elfnn-loongarch.c:

...

>
> Are you OK with this change?
> Could you please pick it up in your tree?

Ping. What is the status of this patch? Any more comments?
Is there a chance to merge it for this coming merge window?

Thanks,
Tiezhu


2023-06-22 22:53:28

by Namhyung Kim

[permalink] [raw]
Subject: Re: [PATCH v2] perf symbol: Add LoongArch case in get_plt_sizes()

Hello,

On Tue, Jun 20, 2023 at 9:36 PM Tiezhu Yang <[email protected]> wrote:
>
>
>
> On 06/08/2023 03:01 PM, Tiezhu Yang wrote:
> > Hi Arnaldo,
> >
> > On 05/23/2023 06:26 PM, Huacai Chen wrote:
> >> Acked-by: Huacai Chen <[email protected]>
> >>
> >> On Tue, May 23, 2023 at 5:57 PM Tiezhu Yang <[email protected]>
> >> wrote:
> >>>
> >>> We can see the following definitions in bfd/elfnn-loongarch.c:
>
> ...
>
> >
> > Are you OK with this change?
> > Could you please pick it up in your tree?
>
> Ping. What is the status of this patch? Any more comments?
> Is there a chance to merge it for this coming merge window?

Sorry for the late reply, I'll apply it to the perf-tools-next tree.

Thanks,
Namhyung

2023-06-23 18:32:28

by Namhyung Kim

[permalink] [raw]
Subject: Re: [PATCH v2] perf symbol: Add LoongArch case in get_plt_sizes()

On Thu, Jun 22, 2023 at 3:33 PM Namhyung Kim <[email protected]> wrote:
>
> Hello,
>
> On Tue, Jun 20, 2023 at 9:36 PM Tiezhu Yang <[email protected]> wrote:
> >
> >
> >
> > On 06/08/2023 03:01 PM, Tiezhu Yang wrote:
> > > Hi Arnaldo,
> > >
> > > On 05/23/2023 06:26 PM, Huacai Chen wrote:
> > >> Acked-by: Huacai Chen <[email protected]>
> > >>
> > >> On Tue, May 23, 2023 at 5:57 PM Tiezhu Yang <[email protected]>
> > >> wrote:
> > >>>
> > >>> We can see the following definitions in bfd/elfnn-loongarch.c:
> >
> > ...
> >
> > >
> > > Are you OK with this change?
> > > Could you please pick it up in your tree?
> >
> > Ping. What is the status of this patch? Any more comments?
> > Is there a chance to merge it for this coming merge window?
>
> Sorry for the late reply, I'll apply it to the perf-tools-next tree.

Applied to perf-tools-next, thanks!