linux-kernel - [PATCH] edac: Cleanup the logs for i7core and sb edac drivers

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Message-Id: <1331121944-28307-1-git-send-email-mchehab@redhat.com>
Date:	Wed,  7 Mar 2012 09:05:44 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Linux Edac Mailing List <linux-edac@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] edac: Cleanup the logs for i7core and sb edac drivers

Remove some information that it is duplicated at the MCE log,
and don't have much usage for the error. Those data will be
added again, when creating a trace function that outputs both
memory errors and MCE fields.

Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
---

PS.: This patch requires the FB-DIMM/modern Intel DDR2/DDR3 memory controller
     fixes to be applied before it.

 drivers/edac/i7core_edac.c |    9 ++-------
 drivers/edac/sb_edac.c     |   29 ++++++++++++++---------------
 2 files changed, 16 insertions(+), 22 deletions(-)

diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index edb6bac..b47910e 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1627,7 +1627,7 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
 				    const struct mce *m)
 {
 	struct i7core_pvt *pvt = mci->pvt_info;
-	char *type, *optype, *err, *msg;
+	char *type, *optype, *err, msg[80];
 	enum hw_event_mc_err_type tp_event;
 	unsigned long error = m->status & 0x1ff0000l;
 	bool uncorrected_error = m->mcgstatus & 1ll << 61;
@@ -1705,10 +1705,7 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
 		err = "unknown";
 	}
 
-	msg = kasprintf(GFP_ATOMIC,
-		"addr=0x%08llx cpu=%d count=%d Err=%08llx:%08llx (%s: %s))\n",
-		(long long) m->addr, m->cpu, core_err_cnt,
-		(long long)m->status, (long long)m->misc, optype, err);
+	snprintf(msg, sizeof(msg), "count=%d %s", core_err_cnt, optype);
 
 	/*
 	 * Call the helper to output message
@@ -1722,8 +1719,6 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
 				     syndrome,
 				     channel, dimm, -1,
 				     err, msg, m);
-
-	kfree(msg);
 }
 
 /*
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 4752a7f..5a3a1f6 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -1423,23 +1423,22 @@ static void sbridge_mce_output_error(struct mem_ctl_info *mci,
 		recoverable_msg = "";
 
 	/*
-	 * FIXME: What should we do with "channel" information on mcelog?
-	 * Probably, we can just discard it, as the channel information
-	 * comes from the get_memory_error_data() address decoding
+	 * FIXME: On some memory configurations (mirror, lockstep), the
+	 * Memory Controller can't point the error to a single DIMM. The
+	 * EDAC core should be handling the channel mask, in order to point
+	 * to the group of dimm's where the error may be happening.
 	 */
 	snprintf(msg, sizeof(msg),
-			"%d error(s)%s: %s%s: cpu=%d Err=%04x:%04x addr = 0x%08llx socket=%d Channel=%ld(mask=%ld), rank=%d\n",
-			core_err_cnt,
-			overflow ? " OVERFLOW" : "",
-			area_type,
-			recoverable_msg,
-			m->cpu,
-			mscod, errcode,
-			(long long) m->addr,
-			socket,
-			first_channel,		/* This is the real channel on SB */
-			channel_mask,
-			rank);
+		 "%d error(s)%s: %s%s: Err=%04x:%04x socket=%d channel=%ld/mask=%ld rank=%d",
+		 core_err_cnt,
+		 overflow ? " OVERFLOW" : "",
+		 area_type,
+		 recoverable_msg,
+		 mscod, errcode,
+		 socket,
+		 first_channel,
+		 channel_mask,
+		 rank);
 
 	debugf0("%s", msg);
 
-- 
1.7.8

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