AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/tile/include
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Chris Metcalf 3e2e0d2c22 tile: comment assumption about __insn_mtspr for <asm/irqflags.h> 
The arch_local_irq_save(), etc., routines are required to function
as compiler barriers.  They do, but it's subtle and requires knowing
that the gcc builtin __insn_mtspr() is marked as a memory clobber.
Provide a comment explaining the assumption.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
[ This came about from me wondering about the synchronization rules of
  __insn_mtspr()   - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-09 10:08:14 -07:00
..
arch UAPI: Place comments in empty arch Kbuilds to make them non-empty 2012-10-17 12:31:16 +01:00
asm tile: comment assumption about __insn_mtspr for <asm/irqflags.h> 2013-04-09 10:08:14 -07:00
gxio UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
hv UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
uapi tile: avoid defining INT_MASK macro in <arch/interrupts.h> 2013-02-04 12:53:15 -05:00