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2014-01-12arch: Clean up asm/barrier.h implementations using asm-generic/barrier.hPeter Zijlstra
We're going to be adding a few new barrier primitives, and in order to avoid endless duplication make more agressive use of asm-generic/barrier.h. Change the asm-generic/barrier.h such that it allows partial barrier definitions and fills out the rest with defaults. There are a few architectures (m32r, m68k) that could probably do away with their barrier.h file entirely but are kept for now due to their unconventional nop() implementation. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Michael Neuling <mikey@neuling.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Victor Kaplansky <VICTORK@il.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/20131213150640.846368594@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-04-04avr32: fix nop compile fails from system.h split upPaul Gortmaker
To fix: In file included from kernel/exit.c:61: arch/avr32/include/asm/mmu_context.h: In function 'enable_mmu': arch/avr32/include/asm/mmu_context.h:135: error: implicit declaration of function 'nop' It needs an include of the new file created in commit ae4739465866 ("Disintegrate asm/system.h for AVR32"), but since that file only contains "nop", and since other arch already have precedent of putting nop in asm/barrier.h we should just delete the new file and put nop in barrier.h Suggested-and-acked-by: David Howells <dhowells@redhat.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-28Disintegrate asm/system.h for AVR32David Howells
Disintegrate asm/system.h for AVR32. This has not been compiled at all. Signed-off-by: David Howells <dhowells@redhat.com> cc: Haavard Skinnemoen <hskinnemoen@gmail.com>