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authorBorislav Petkov <bp@suse.de>2015-05-21 19:59:31 +0200
committerBorislav Petkov <bp@suse.de>2015-05-28 15:31:53 +0200
commitb01aec9b2c7d32f17a37553df63efa9f7c0fdaa0 (patch)
treec824c935c92b9dbbbfd2dc7405aec2e4063eacc9 /drivers/edac
parent30c7469ba6f5eccf33ac33ec7cb19414f50cf3bf (diff)
downloadlinux-b01aec9b2c7d32f17a37553df63efa9f7c0fdaa0.tar.bz2
EDAC: Cleanup atomic_scrub mess
So first of all, this atomic_scrub() function's naming is bad. It looks like an atomic_t helper. Change it to edac_atomic_scrub(). The bigger problem is that this function is arch-specific and every new arch which doesn't necessarily need that functionality still needs to define it, otherwise EDAC doesn't compile. So instead of doing that and including arch-specific headers, have each arch define an EDAC_ATOMIC_SCRUB symbol which can be used in edac_mc.c for ifdeffery. Much cleaner. And we already are doing this with another symbol - EDAC_SUPPORT. This is also much cleaner than having CONFIG_EDAC enumerate all the arches which need/have EDAC support and drivers. This way I can kill the useless edac.h header in tile too. Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Chris Metcalf <cmetcalf@ezchip.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Doug Thompson <dougthompson@xmission.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linuxppc-dev@lists.ozlabs.org Cc: "Maciej W. Rozycki" <macro@codesourcery.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Paul Mackerras <paulus@samba.org> Cc: "Steven J. Hill" <Steven.Hill@imgtec.com> Cc: x86@kernel.org Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/Kconfig7
-rw-r--r--drivers/edac/edac_mc.c9
2 files changed, 11 insertions, 5 deletions
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 2d2530cdf99d..a90e06ac1631 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -2,15 +2,16 @@
# EDAC Kconfig
# Copyright (c) 2008 Doug Thompson www.softwarebitmaker.com
# Licensed and distributed under the GPL
-#
+
+config EDAC_ATOMIC_SCRUB
+ bool
config EDAC_SUPPORT
bool
menuconfig EDAC
bool "EDAC (Error Detection And Correction) reporting"
- depends on HAS_IOMEM
- depends on X86 || PPC || TILE || ARM || EDAC_SUPPORT
+ depends on HAS_IOMEM && EDAC_SUPPORT
help
EDAC is designed to report errors in the core system.
These are low-level errors that are reported in the CPU or
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index af3be1914dbb..943ed8cf71b9 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -30,11 +30,16 @@
#include <linux/bitops.h>
#include <asm/uaccess.h>
#include <asm/page.h>
-#include <asm/edac.h>
#include "edac_core.h"
#include "edac_module.h"
#include <ras/ras_event.h>
+#ifdef CONFIG_EDAC_ATOMIC_SCRUB
+#include <asm/edac.h>
+#else
+#define edac_atomic_scrub(va, size) do { } while (0)
+#endif
+
/* lock to memory controller's control array */
static DEFINE_MUTEX(mem_ctls_mutex);
static LIST_HEAD(mc_devices);
@@ -874,7 +879,7 @@ static void edac_mc_scrub_block(unsigned long page, unsigned long offset,
virt_addr = kmap_atomic(pg);
/* Perform architecture specific atomic scrub operation */
- atomic_scrub(virt_addr + offset, size);
+ edac_atomic_scrub(virt_addr + offset, size);
/* Unmap and complete */
kunmap_atomic(virt_addr);