linux-kernel - RE: [PATCH] x86/mce: Increase maximum number of banks to 64

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Date:   Thu, 20 Aug 2020 18:15:15 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Yazen Ghannam <yazen.ghannam@....com>,
        Borislav Petkov <bp@...en8.de>
CC:     "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "Smita.KoralahalliChannabasappa@....com" 
        <Smita.KoralahalliChannabasappa@....com>
Subject: RE: [PATCH] x86/mce: Increase maximum number of banks to 64

>> How much does vmlinux size grow with your change?
>>
>
> It seems to get smaller.
>
> -rwxrwxr-x   1 yghannam yghannam 807634088 Aug 20 17:51 vmlinux-32banks
> -rwxrwxr-x   1 yghannam yghannam 807634072 Aug 20 17:50 vmlinux-64banks

You need to run:

$ size vmlinux
   text    data     bss     dec     hex filename
20334755        12569682        14798924        47703361        2d7e541 vmlinux

Likely the extra space is added to the third element ("bss"). That doesn't show
up in the vmlinux file, but does add to memory footprint while running.

-Tony