linux-kernel - [PATCH v2] EDAC/mc: Create new function edac_inc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200214141757.8976-1-rrichter@marvell.com>
Date:   Fri, 14 Feb 2020 15:17:56 +0100
From:   Robert Richter <rrichter@...vell.com>
To:     Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>
CC:     James Morse <james.morse@....com>,
        Aristeu Rozanski <aris@...hat.com>,
        Robert Richter <rrichter@...vell.com>,
        <linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] EDAC/mc: Create new function edac_inc_csrow()

Have a separate function to count errors in csrow/channel. This better
separates code and reduces the indentation level.

Implementation note: Function edac_inc_csrow() counts the same as
before, ->ce_count is only incremented if row >= 0. This is esp. true
for the case of (!e->enable_per_layer_report). Here, a DIMM was not
found, variable row still has a value of -1 and ->ce_count is not
incremented.

Signed-off-by: Robert Richter <rrichter@...vell.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@...nel.org>
Acked-by: Aristeu Rozanski <aris@...hat.com>
---
v2:
 * updated patch description to address the case fir
   (!e->enable_per_layer_report),
 * reordered variable declarations
---
 drivers/edac/edac_mc.c | 40 +++++++++++++++++++++++++---------------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index e817a710739f..31ba988359d2 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -1089,6 +1089,26 @@ static void edac_ue_error(struct mem_ctl_info *mci,
 	edac_inc_ue_error(mci, enable_per_layer_report, pos, error_count);
 }
 
+static void edac_inc_csrow(struct edac_raw_error_desc *e, int row, int chan)
+{
+	struct mem_ctl_info *mci = error_desc_to_mci(e);
+	enum hw_event_mc_err_type type = e->type;
+	u16 count = e->error_count;
+
+	if (row < 0)
+		return;
+
+	edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan);
+
+	if (type == HW_EVENT_ERR_CORRECTED) {
+		mci->csrows[row]->ce_count += count;
+		if (chan >= 0)
+			mci->csrows[row]->channels[chan]->ce_count += count;
+	} else {
+		mci->csrows[row]->ue_count += count;
+	}
+}
+
 void edac_raw_mc_handle_error(struct edac_raw_error_desc *e)
 {
 	struct mem_ctl_info *mci = error_desc_to_mci(e);
@@ -1256,22 +1276,12 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
 			chan = -2;
 	}
 
-	if (!e->enable_per_layer_report) {
+	if (!e->enable_per_layer_report)
 		strcpy(e->label, "any memory");
-	} else {
-		edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan);
-		if (p == e->label)
-			strcpy(e->label, "unknown memory");
-		if (type == HW_EVENT_ERR_CORRECTED) {
-			if (row >= 0) {
-				mci->csrows[row]->ce_count += error_count;
-				if (chan >= 0)
-					mci->csrows[row]->channels[chan]->ce_count += error_count;
-			}
-		} else
-			if (row >= 0)
-				mci->csrows[row]->ue_count += error_count;
-	}
+	else if (!*e->label)
+		strcpy(e->label, "unknown memory");
+
+	edac_inc_csrow(e, row, chan);
 
 	/* Fill the RAM location data */
 	p = e->location;
-- 
2.20.1