linux-kernel - Re: [PATCH v3 08/26] objtool: Optimize find_section_by

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Date:   Wed, 25 Mar 2020 11:12:57 +0100 (CET)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Peter Zijlstra <peterz@...radead.org>
cc:     tglx@...utronix.de, jpoimboe@...hat.com,
        linux-kernel@...r.kernel.org, x86@...nel.org, mhiramat@...nel.org,
        brgerst@...il.com
Subject: Re: [PATCH v3 08/26] objtool: Optimize find_section_by_index()

On Tue, 24 Mar 2020, Peter Zijlstra wrote:

> In order to avoid a linear search (over 20k entries), add an
> section_hash to the elf object.
> 
> This reduces objtool on vmlinux.o from a few minutes to around 45
> seconds.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Acked-by: Josh Poimboeuf <jpoimboe@...hat.com>

Reviewed-by: Miroslav Benes <mbenes@...e.cz>

M