linux/arch/tile
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
..
configs md: remove CONFIG_MULTICORE_RAID456 entirely 2013-03-20 13:21:14 +11:00
gxio arch/tile: provide kernel support for the tilegx USB shim 2012-07-18 16:40:24 -04:00
include tile: comment assumption about __insn_mtspr for <asm/irqflags.h> 2013-04-09 10:08:14 -07:00
kernel tile: expect new initramfs name from hypervisor file system 2013-03-29 15:11:49 -04:00
kvm arch/tile/kvm: remove depends on CONFIG_EXPERIMENTAL 2013-01-17 12:11:26 -08:00
lib tile: export a handful of symbols appropriately 2013-02-08 13:20:36 -05:00
mm swap: add per-partition lock for swapfile 2013-02-23 17:50:17 -08:00
Kbuild
Kconfig Select VIRT_TO_BUS directly where needed 2013-03-12 11:16:40 -07:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Makefile arch/tile: avoid generating .eh_frame information in modules 2012-10-23 10:21:43 -04:00