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SubjectRe: [RFC patch 07/19] bpf: Provide BPF_PROG_RUN_PIN_ON_CPU() macro
On 14-Feb-2020 02:39:24 PM, Thomas Gleixner wrote:
[...]
> +#define BPF_PROG_RUN_PIN_ON_CPU(prog, ctx) ({ \
> + u32 ret; \
> + migrate_disable(); \
> + ret = __BPF_PROG_RUN(prog, ctx, bpf_dispatcher_nopfunc); \
> + migrate_enable(); \
> + ret; })

Does it really have to be a statement expression with a local variable ?

If so, we should consider renaming "ret" to "__ret" to minimize the
chances of a caller issuing BPF_PROG_RUN_PIN_ON_CPU with "ret" as
prog or ctx argument, which would lead to unexpected results.

Thanks,

Mathieu

--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

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