Re: [PATCH 02/26] perf: Introduce mmap3 version of mmap event

[peterz]

On Sun, Sep 13, 2020 at 11:02:49PM +0200, Jiri Olsa wrote:
> Add new version of mmap event. The MMAP3 record is an
> augmented version of MMAP2, it adds build id value to
> identify the exact binary object behind memory map:
> 
>   struct {
>     struct perf_event_header header;
> 
>     u32                      pid, tid;
>     u64                      addr;
>     u64                      len;
>     u64                      pgoff;
>     u32                      maj;
>     u32                      min;
>     u64                      ino;
>     u64                      ino_generation;
>     u32                      prot, flags;
>     u32                      reserved;
>     u8                       buildid[20];
>     char                     filename[];
>     struct sample_id         sample_id;
>   };
> 

So weren't there still open problems with mmap2 that also needed
addressing? I seem to have forgotten :/