Messages in this thread | | | Date | Thu, 07 Jan 2021 09:13:40 +0000 | From | Alexander Lobakin <> | Subject | Re: [PATCH net-next] net: sysctl: cleanup net_sysctl_init() |
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From: Jakub Kicinski <kuba@kernel.org> Date: Wed, 6 Jan 2021 16:30:56 -0800
> On Wed, 06 Jan 2021 20:40:28 +0000 Alexander Lobakin wrote: >> 'net_header' is not used outside of this function, so can be moved >> from BSS onto the stack. >> Declarations of one-element arrays are discouraged, and there's no >> need to store 'empty' in BSS. Simply allocate it from heap at init. > > Are you sure? It's passed as an argument to register_sysctl() > so it may well need to be valid for the lifetime of net_header.
I just moved it from BSS to the heap and allocate it using kzalloc(), it's still valid through the lifetime of the kernel.
Al
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