linux-kernel - Re: [PATCH v5 0/3] perf report: Support annotation of code without symbols

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Date:   Mon, 2 Mar 2020 13:51:23 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jin Yao <yao.jin@...ux.intel.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v5 0/3] perf report: Support annotation of code without
 symbols

On Thu, Feb 27, 2020 at 12:39:36PM +0800, Jin Yao wrote:
> For perf report on stripped binaries it is currently impossible to do
> annotation. The annotation state is all tied to symbols, but there are
> either no symbols, or symbols are not covering all the code.
> 
> We should support the annotation functionality even without symbols.
> 
> The first patch uses al_addr to print because it's easy to dump
> the instructions from this address in binary for branch mode.
> 
> The second patch supports the annotation on stripped binary.
> 
> The third patch supports the hotkey 'a' on address for annotation.
> 
>  v5:
>  ---
>  Separate the hotkey 'a' implementation to a new patch
>  "perf report: Support hotkey 'a' on address for annotation"

Acked-by: Jiri Olsa <jolsa@...hat.com>

thanks,
jirka

> 
>  v4:
>  ---
>  1. Support the hotkey 'a'. When we press 'a' on address,
>     now it supports the annotation.
> 
>  2. Change the patch title from
>     "Support interactive annotation of code without symbols" to
>     "perf report: Support interactive annotation of code without symbols"
> 
>  v3:
>  ---
>  Keep just the ANNOTATION_DUMMY_LEN, and remove the
>  opts->annotate_dummy_len since it's the "maybe in future
>  we will provide" feature.
> 
>  v2:
>  ---
>  Fix a crash issue when annotating an address in "unknown" object.
> 
> Jin Yao (3):
>   perf util: Print al_addr when symbol is not found
>   perf report: Support interactive annotation of code without symbols
>   perf report: Support hotkey 'a' on address for annotation
> 
>  tools/perf/ui/browsers/hists.c | 90 +++++++++++++++++++++++++++-------
>  tools/perf/util/annotate.h     |  1 +
>  tools/perf/util/sort.c         |  6 ++-
>  3 files changed, 78 insertions(+), 19 deletions(-)
> 
> -- 
> 2.17.1
>