lkml.org 
[lkml]   [2019]   [Jun]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2 4/7] perf diff: Use hists to manage basic blocks per symbol
From
Date


On 6/8/2019 7:41 PM, Jin, Yao wrote:
>
>
> On 6/5/2019 7:44 PM, Jiri Olsa wrote:
>> On Mon, Jun 03, 2019 at 10:36:14PM +0800, Jin Yao wrote:
>>
>> SNIP
>>
>>> diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
>>> index 43623fa..d1641da 100644
>>> --- a/tools/perf/util/sort.h
>>> +++ b/tools/perf/util/sort.h
>>> @@ -79,6 +79,9 @@ struct hist_entry_diff {
>>>           /* HISTC_WEIGHTED_DIFF */
>>>           s64    wdiff;
>>> +
>>> +        /* PERF_HPP_DIFF__CYCLES */
>>> +        s64    cycles;
>>>       };
>>>   };
>>> @@ -143,6 +146,9 @@ struct hist_entry {
>>>       struct branch_info    *branch_info;
>>>       long            time;
>>>       struct hists        *hists;
>>> +    void            *block_hists;
>>> +    int            block_idx;
>>> +    int            block_num;
>>>       struct mem_info        *mem_info;
>>>       struct block_info    *block_info;
>>
>> could you please not add the new block* stuff in here,
>> and instead use the "c2c model" and use yourr own struct
>> on top of hist_entry? we are trying to librarize this
>> stuff and keep only necessary things in here..
>>
>> you're already using hist_entry_ops, so should be easy
>>
>> something like:
>>
>>     struct block_hist_entry {
>>         void            *block_hists;
>>         int            block_idx;
>>         int            block_num;
>>         struct block_info    *block_info;
>>
>>         struct hist_entry    he;
>>     };
>>
>>
>>
>> jirka
>>
>
> Hi Jiri,
>
> After more considerations, maybe I can't move these stuffs from
> hist_entry to block_hist_entry.
>
> Actually we use 2 kinds of hist_entry in this patch series. On kind of
> hist_entry is for symbol/function. The other kind of hist_entry is for
> basic block.
>
> @@ -143,6 +146,9 @@ struct hist_entry {
>       struct branch_info    *branch_info;
>       long            time;
>       struct hists        *hists;
> +    void            *block_hists;
> +    int            block_idx;
> +    int            block_num;
>       struct mem_info        *mem_info;
>       struct block_info    *block_info;
>
> The above hist_entry is actually for symbol/function. This patch series
> collects all basic blocks in a symbol/function, so it needs a hists in
> struct hist_entry (block_hists) to point to the hists of basic blocks.
>
> Correct me if I'm wrong.
>
> Thanks
> Jin Yao
>

Hi Jiri,

Either adding a new pointer 'priv' in 'struct map_symbol'?

struct map_symbol {
struct map *map;
struct symbol *sym;
+ void *priv;
};

We create a struct outside and assign the pointer to priv. Logically it
should make sense since the symbol/function may have private data for
processing.

Any idea?

Thanks
Jin Yao




\
 
 \ /
  Last update: 2019-06-11 04:23    [W:0.119 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site