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MFC r351594 (by kib): Centralize __pcpu definitions.

Description

MFC r351594 (by kib): Centralize __pcpu definitions.

Many extern struct pcpu <something>pcpu declarations were
copied/pasted in sources. The issue is that the definition is MD, but
it cannot be provided by machine/pcpu.h due to actual struct pcpu
defined in sys/pcpu.h later than the inclusion of machine/pcpu.h.
This forced the copying when other code needed direct access to
pcpu. There is no way around it, due to machine/pcpu.h supplying
part of struct pcpu fields.

To work around the problem, add a new machine/pcpu_aux.h header, which
should fill any needed MD definitions after struct pcpu definition is
completed. This allows to remove copies of __pcpu spread around the
source. Also on x86 it makes it possible to remove work arounds like
OFFSETOF_CURTHREAD or clang specific warnings supressions.

Details

Committed
mavOct 25 2019, 6:56 PM
Parents
rS354092: Properly set VNET when nuking recvif from fragment queues.
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