linux-kernel - Re: [PATCH v3 09/26] objtool: Optimize find_section_by

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Message-ID: <alpine.LSU.2.21.2003251118040.12098@pobox.suse.cz>
Date:   Wed, 25 Mar 2020 11:18:22 +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 09/26] objtool: Optimize find_section_by_name()

On Tue, 24 Mar 2020, Peter Zijlstra wrote:

> In order to avoid yet another linear search of (20k) sections, add a
> name based hash.
> 
> This reduces objtool runtime on vmlinux.o by some 10s to around 35s.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Acked-by: Josh Poimboeuf <jpoimboe@...hat.com>

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

M