> On Mar 6, 2018, at 10:25 AM, Peter Zijlstra wrote:
>
> On Tue, Mar 06, 2018 at 10:09:13AM -0800, Song Liu wrote:
>> +/* Parse build ID of ELF file mapped to vma */
>> +static int stack_map_get_build_id(struct vm_area_struct *vma,
>> + unsigned char *build_id)
>> +
On Tue, Mar 06, 2018 at 10:09:13AM -0800, Song Liu wrote:
> +/* Parse build ID of ELF file mapped to vma */
> +static int stack_map_get_build_id(struct vm_area_struct *vma,
> + unsigned char *build_id)
> +{
> + Elf32_Ehdr *ehdr;
> + struct page *page;
> + i
Currently, bpf stackmap store address for each entry in the call trace.
To map these addresses to user space files, it is necessary to maintain
the mapping from these virtual address to symbols in the binary. Usually,
the user space profiler (such as perf) has to scan /proc/pid/maps at the
beginnin
