[PATCH AUTOSEL 4.19 088/191] EDAC: Correct DIMM capacity unit symbol

[PATCH AUTOSEL 4.19 088/191] EDAC: Correct DIMM capacity unit symbol

[Sasha Levin]

From: Qiuxu Zhuo <qiuxu.zhuo@intel.com>

[ Upstream commit 6f6da136046294a1e8d2944336eb97412751f653 ]

The {i3200|i7core|sb|skx}_edac drivers show DIMM capacity using the
wrong unit symbol: 'Mb' - megabit. Fix them by replacing 'Mb' with
'MiB' - mebibyte.

[Tony: These are all "edac_dbg()" messages, so this won't break scripts
       that parse console logs.]

Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac@vger.kernel.org
Link: https://lkml.kernel.org/r/20180919003433.16475-1-tony.luck@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/edac/i3200_edac.c  | 2 +-
 drivers/edac/i7core_edac.c | 2 +-
 drivers/edac/sb_edac.c     | 2 +-
 drivers/edac/skx_edac.c    | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/edac/i3200_edac.c b/drivers/edac/i3200_edac.c
index d92d56cee1017..299b441647cd5 100644
--- a/drivers/edac/i3200_edac.c
+++ b/drivers/edac/i3200_edac.c
@@ -399,7 +399,7 @@ static int i3200_probe1(struct pci_dev *pdev, int dev_idx)
 			if (nr_pages == 0)
 				continue;
 
-			edac_dbg(0, "csrow %d, channel %d%s, size = %ld Mb\n", i, j,
+			edac_dbg(0, "csrow %d, channel %d%s, size = %ld MiB\n", i, j,
 				 stacked ? " (stacked)" : "", PAGES_TO_MiB(nr_pages));
 
 			dimm->nr_pages = nr_pages;
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index f1d19504a0281..4a3300c2da333 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -597,7 +597,7 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 			/* DDR3 has 8 I/O banks */
 			size = (rows * cols * banks * ranks) >> (20 - 3);
 
-			edac_dbg(0, "\tdimm %d %d Mb offset: %x, bank: %d, rank: %d, row: %#x, col: %#x\n",
+			edac_dbg(0, "\tdimm %d %d MiB offset: %x, bank: %d, rank: %d, row: %#x, col: %#x\n",
 				 j, size,
 				 RANKOFFSET(dimm_dod[j]),
 				 banks, ranks, rows, cols);
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 72cea3cb86224..acb9db55f5700 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -1622,7 +1622,7 @@ static int __populate_dimms(struct mem_ctl_info *mci,
 				size = ((u64)rows * cols * banks * ranks) >> (20 - 3);
 				npages = MiB_TO_PAGES(size);
 
-				edac_dbg(0, "mc#%d: ha %d channel %d, dimm %d, %lld Mb (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
+				edac_dbg(0, "mc#%d: ha %d channel %d, dimm %d, %lld MiB (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
 					 pvt->sbridge_dev->mc, pvt->sbridge_dev->dom, i, j,
 					 size, npages,
 					 banks, ranks, rows, cols);
diff --git a/drivers/edac/skx_edac.c b/drivers/edac/skx_edac.c
index 4ba92f1dd0f74..dd209e0dd9abb 100644
--- a/drivers/edac/skx_edac.c
+++ b/drivers/edac/skx_edac.c
@@ -364,7 +364,7 @@ static int get_dimm_info(u32 mtr, u32 amap, struct dimm_info *dimm,
 	size = ((1ull << (rows + cols + ranks)) * banks) >> (20 - 3);
 	npages = MiB_TO_PAGES(size);
 
-	edac_dbg(0, "mc#%d: channel %d, dimm %d, %lld Mb (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
+	edac_dbg(0, "mc#%d: channel %d, dimm %d, %lld MiB (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
 		 imc->mc, chan, dimmno, size, npages,
 		 banks, 1 << ranks, rows, cols);
 
@@ -424,7 +424,7 @@ static int get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
 	dimm->mtype = MEM_NVDIMM;
 	dimm->edac_mode = EDAC_SECDED; /* likely better than this */
 
-	edac_dbg(0, "mc#%d: channel %d, dimm %d, %llu Mb (%u pages)\n",
+	edac_dbg(0, "mc#%d: channel %d, dimm %d, %llu MiB (%u pages)\n",
 		 imc->mc, chan, dimmno, size >> 20, dimm->nr_pages);
 
 	snprintf(dimm->label, sizeof(dimm->label), "CPU_SrcID#%u_MC#%u_Chan#%u_DIMM#%u",
-- 
2.20.1

[PATCH AUTOSEL 4.19 150/191] EDAC: Raise the maximum number of memory controllers

[Sasha Levin]

From: Justin Ernst <justin.ernst@hpe.com>

[ Upstream commit 6b58859419554fb824e09cfdd73151a195473cbc ]

We observe an oops in the skx_edac module during boot:

  EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0
  EDAC MC1: Giving out device to module skx_edac controller Skylake Socket#0 IMC#1
  EDAC MC2: Giving out device to module skx_edac controller Skylake Socket#1 IMC#0
  ...
  EDAC MC13: Giving out device to module skx_edac controller Skylake Socket#0 IMC#1
  EDAC MC14: Giving out device to module skx_edac controller Skylake Socket#1 IMC#0
  EDAC MC15: Giving out device to module skx_edac controller Skylake Socket#1 IMC#1
  Too many memory controllers: 16
  EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0

We observe there are two memory controllers per socket, with a limit
of 16. Raise the maximum number of memory controllers from 16 to 2 *
MAX_NUMNODES (1024).

[ bp: This is just a band-aid fix until we've sorted out the whole issue
  with the bus_type association and handling in EDAC and can get rid of
  this arbitrary limit. ]

Signed-off-by: Justin Ernst <justin.ernst@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Russ Anderson <russ.anderson@hpe.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac@vger.kernel.org
Link: https://lkml.kernel.org/r/20180925143449.284634-1-justin.ernst@hpe.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/edac.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/edac.h b/include/linux/edac.h
index bffb97828ed67..958d69332c1d5 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -17,6 +17,7 @@
 #include <linux/completion.h>
 #include <linux/workqueue.h>
 #include <linux/debugfs.h>
+#include <linux/numa.h>
 
 #define EDAC_DEVICE_NAME_LEN	31
 
@@ -670,6 +671,6 @@ struct mem_ctl_info {
 /*
  * Maximum number of memory controllers in the coherent fabric.
  */
-#define EDAC_MAX_MCS	16
+#define EDAC_MAX_MCS	2 * MAX_NUMNODES
 
 #endif
-- 
2.20.1