diff options
author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-08-30 15:44:46 -0700 |
---|---|---|
committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-10-09 09:39:19 -0700 |
commit | ea845040b6a4d6c54a845e8f366c3c68ab6f3fb1 (patch) | |
tree | eebf418fd12f0bef645e17c02296239cc72bcd67 | |
parent | f1af96c335f1837333e5248a76a329ede8029022 (diff) |
xfs: add debug knobs to control btree bulk load slack factors
Add some debug knobs so that we can control the leaf and node block
slack when rebuilding btrees.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
-rw-r--r-- | fs/xfs/xfs_globals.c | 6 | ||||
-rw-r--r-- | fs/xfs/xfs_sysctl.h | 2 | ||||
-rw-r--r-- | fs/xfs/xfs_sysfs.c | 54 |
3 files changed, 62 insertions, 0 deletions
diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c index fa55ab8b8d80..8f67027c144b 100644 --- a/fs/xfs/xfs_globals.c +++ b/fs/xfs/xfs_globals.c @@ -43,4 +43,10 @@ struct xfs_globals xfs_globals = { #ifdef DEBUG .pwork_threads = -1, /* automatic thread detection */ #endif + + /* Bulk load new btree leaf blocks to 75% full. */ + .bload_leaf_slack = -1, + + /* Bulk load new btree node blocks to 75% full. */ + .bload_node_slack = -1, }; diff --git a/fs/xfs/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h index 8abf4640f1d5..aecccceee4ca 100644 --- a/fs/xfs/xfs_sysctl.h +++ b/fs/xfs/xfs_sysctl.h @@ -85,6 +85,8 @@ struct xfs_globals { #ifdef DEBUG int pwork_threads; /* parallel workqueue threads */ #endif + int bload_leaf_slack; /* btree bulk load leaf slack */ + int bload_node_slack; /* btree bulk load node slack */ int log_recovery_delay; /* log recovery delay (secs) */ int mount_delay; /* mount setup delay (secs) */ bool bug_on_assert; /* BUG() the kernel on assert failure */ diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index f1bc88f4367c..673ad21a9585 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -228,6 +228,58 @@ pwork_threads_show( XFS_SYSFS_ATTR_RW(pwork_threads); #endif /* DEBUG */ +STATIC ssize_t +bload_leaf_slack_store( + struct kobject *kobject, + const char *buf, + size_t count) +{ + int ret; + int val; + + ret = kstrtoint(buf, 0, &val); + if (ret) + return ret; + + xfs_globals.bload_leaf_slack = val; + return count; +} + +STATIC ssize_t +bload_leaf_slack_show( + struct kobject *kobject, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bload_leaf_slack); +} +XFS_SYSFS_ATTR_RW(bload_leaf_slack); + +STATIC ssize_t +bload_node_slack_store( + struct kobject *kobject, + const char *buf, + size_t count) +{ + int ret; + int val; + + ret = kstrtoint(buf, 0, &val); + if (ret) + return ret; + + xfs_globals.bload_node_slack = val; + return count; +} + +STATIC ssize_t +bload_node_slack_show( + struct kobject *kobject, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bload_node_slack); +} +XFS_SYSFS_ATTR_RW(bload_node_slack); + static struct attribute *xfs_dbg_attrs[] = { ATTR_LIST(bug_on_assert), ATTR_LIST(log_recovery_delay), @@ -236,6 +288,8 @@ static struct attribute *xfs_dbg_attrs[] = { #ifdef DEBUG ATTR_LIST(pwork_threads), #endif + ATTR_LIST(bload_leaf_slack), + ATTR_LIST(bload_node_slack), NULL, }; |