Messages in this thread | | | Date | Mon, 27 Feb 2023 15:31:35 +0100 | Subject | Re: [PATCH v2 net-next 3/5] net: dsa: microchip: add eth mac grouping for ethtool statistics | From | Alexander Lobakin <> |
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From: Vladimir Oltean <olteanv@gmail.com> Date: Fri, 24 Feb 2023 23:53:49 +0200
> On Fri, Feb 24, 2023 at 05:07:01PM +0100, Alexander Lobakin wrote: >> It's not so common for people to show up back in the thread after you >> ask them to show godbolt / asm code comparison. > > idk what godbolt is, but if it's some sort of online compiler, then I > suppose it's of limited usefulness for the Linux kernel.
Yeah it's an online compiler, which can spit out assembly code. For testing non-complex stuff or macros it's often enough.
> > Easiest way to see a disassembly (also has C code interleaved) would be > this: > > make drivers/net/dsa/microchip/ksz_ethtool.lst
Oh, nice! I didn't know Kbuild has capability of listing the assembly code built-in. I was adding it manually to Makefiles when needed >_< Thanks! :D
> > This is also useful to see precisely which instruction went boom in case > there's a NULL pointer dereference or something like that.
Thanks, Olek
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