From b76bff5557ccc92df456fd7b1cd13c8b061cda07 Mon Sep 17 00:00:00 2001
From: Charles Manning <cdhmanning@gmail.com>
Date: Wed, 18 Aug 2010 12:47:29 +1200
Subject: [PATCH] yaffs  Add gc block counter

Extra stats for counting how many blocks get selected for gc.

Signed-off-by: Charles Manning <cdhmanning@gmail.com>
---
 yaffs_fs.c   | 1 +
 yaffs_guts.c | 2 ++
 yaffs_guts.h | 1 +
 3 files changed, 4 insertions(+)

diff --git a/yaffs_fs.c b/yaffs_fs.c
index 7b55f18..a372ddf 100644
--- a/yaffs_fs.c
+++ b/yaffs_fs.c
@@ -3194,6 +3194,7 @@ static char *yaffs_dump_dev_part1(char *buf, yaffs_Device * dev)
 	buf += sprintf(buf, "allGCs............. %u\n", dev->allGCs);
 	buf += sprintf(buf, "passiveGCs......... %u\n", dev->passiveGCs);
 	buf += sprintf(buf, "oldestDirtyGCs..... %u\n", dev->oldestDirtyGCs);
+	buf += sprintf(buf, "nGCBlocks.......... %u\n", dev->nGCBlocks);
 	buf += sprintf(buf, "backgroundGCs...... %u\n", dev->backgroundGCs);
 	buf += sprintf(buf, "nRetriedWrites..... %u\n", dev->nRetriedWrites);
 	buf += sprintf(buf, "nRetireBlocks...... %u\n", dev->nRetiredBlocks);
diff --git a/yaffs_guts.c b/yaffs_guts.c
index a1782e7..389a57c 100644
--- a/yaffs_guts.c
+++ b/yaffs_guts.c
@@ -2500,8 +2500,10 @@ static unsigned yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
 		  dev->param.nChunksPerBlock - dev->gcPagesInUse,
 		  prioritised));
 
+		dev->nGCBlocks++;
 		if(background)
 			dev->backgroundGCs++;
+
 		dev->gcDirtiest = 0;
 		dev->gcPagesInUse = 0;
 		dev->gcNotDone = 0;
diff --git a/yaffs_guts.h b/yaffs_guts.h
index 6d4ae46..f9b5ac1 100644
--- a/yaffs_guts.h
+++ b/yaffs_guts.h
@@ -759,6 +759,7 @@ struct yaffs_DeviceStruct {
 	__u32 allGCs;
 	__u32 passiveGCs;
 	__u32 oldestDirtyGCs;
+	__u32 nGCBlocks;
 	__u32 backgroundGCs;
 	__u32 nRetriedWrites;
 	__u32 nRetiredBlocks;
-- 
2.30.2