[lustre-devel] [PATCH 07/18] lnet: libcfs: Add checksum speed under /sys/fs
James Simmons
jsimmons at infradead.org
Mon Jul 19 05:32:02 PDT 2021
From: Arshad Hussain <arshad.hussain at aeoncomputing.com>
This patch adds total of registered checksum and all
registered checksum names along with their speed under
/sys/kernel/debug/lustre/checksum_speed
TestCase sanity/77m added.
Sample output:
$ lctl get_param checksum_speed
checksum_speed=adler32: 1955
crc32: 2423
crc32c: 14035
WC-bug-id: https://jira.whamcloud.com/browse/LU-11698
Lustre-commit: d775f9ae37975c85 ("LU-11698 libcfs: Add checksum speed under /sys/fs")
Signed-off-by: Arshad Hussain <arshad.hussain at aeoncomputing.com>
Reviewed-on: https://review.whamcloud.com/43943
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: James Simmons <jsimmons at infradead.org>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
fs/lustre/obdclass/obd_sysfs.c | 61 ++++++++++++++++++++++++++++++++++++
include/linux/libcfs/libcfs_crypto.h | 3 ++
net/lnet/libcfs/linux-crypto.c | 3 +-
3 files changed, 66 insertions(+), 1 deletion(-)
diff --git a/fs/lustre/obdclass/obd_sysfs.c b/fs/lustre/obdclass/obd_sysfs.c
index 43bbbe9..93d2abc 100644
--- a/fs/lustre/obdclass/obd_sysfs.c
+++ b/fs/lustre/obdclass/obd_sysfs.c
@@ -59,6 +59,7 @@
#include <linux/seq_file.h>
#include <linux/kobject.h>
+#include <linux/libcfs/libcfs_crypto.h>
#include <uapi/linux/lnet/lnetctl.h>
#include <obd_support.h>
#include <obd_class.h>
@@ -420,6 +421,63 @@ static int obd_device_list_open(struct inode *inode, struct file *file)
.release = seq_release,
};
+/* checksum_speed */
+static void *checksum_speed_start(struct seq_file *p, loff_t *pos)
+{
+ return pos;
+}
+
+static void checksum_speed_stop(struct seq_file *p, void *v)
+{
+}
+
+static void *checksum_speed_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ ++(*pos);
+ if (*pos >= CFS_HASH_ALG_SPEED_MAX - 1)
+ return NULL;
+
+ return pos;
+}
+
+static int checksum_speed_show(struct seq_file *p, void *v)
+{
+ loff_t index = *(loff_t *)v;
+
+ if (!index || index > CFS_HASH_ALG_SPEED_MAX - 1)
+ return 0;
+
+ seq_printf(p, "%s: %d\n", cfs_crypto_hash_name(index),
+ cfs_crypto_hash_speeds[index]);
+
+ return 0;
+}
+
+static const struct seq_operations checksum_speed_sops = {
+ .start = checksum_speed_start,
+ .stop = checksum_speed_stop,
+ .next = checksum_speed_next,
+ .show = checksum_speed_show,
+};
+
+static int checksum_speed_open(struct inode *inode, struct file *file)
+{
+ int rc = seq_open(file, &checksum_speed_sops);
+
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
+static const struct file_operations checksum_speed_fops = {
+ .owner = THIS_MODULE,
+ .open = checksum_speed_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static int
health_check_seq_show(struct seq_file *m, void *unused)
{
@@ -507,6 +565,9 @@ int class_procfs_init(void)
debugfs_create_file("health_check", 0444, debugfs_lustre_root,
NULL, &health_check_fops);
+
+ debugfs_create_file("checksum_speed", 0444, debugfs_lustre_root,
+ NULL, &checksum_speed_fops);
out:
return rc;
}
diff --git a/include/linux/libcfs/libcfs_crypto.h b/include/linux/libcfs/libcfs_crypto.h
index ef099e9..fc60220 100644
--- a/include/linux/libcfs/libcfs_crypto.h
+++ b/include/linux/libcfs/libcfs_crypto.h
@@ -135,6 +135,9 @@ enum cfs_crypto_hash_alg {
return NULL;
}
+/* Array of hash algorithm speed in MByte per second */
+extern int cfs_crypto_hash_speeds[CFS_HASH_ALG_MAX];
+
/**
* Return hash name for hash algorithm identifier
*
diff --git a/net/lnet/libcfs/linux-crypto.c b/net/lnet/libcfs/linux-crypto.c
index aeaa623..7b4338a 100644
--- a/net/lnet/libcfs/linux-crypto.c
+++ b/net/lnet/libcfs/linux-crypto.c
@@ -39,7 +39,8 @@
/**
* Array of hash algorithm speed in MByte per second
*/
-static int cfs_crypto_hash_speeds[CFS_HASH_ALG_MAX];
+int cfs_crypto_hash_speeds[CFS_HASH_ALG_MAX];
+EXPORT_SYMBOL(cfs_crypto_hash_speeds);
/**
* Initialize the state descriptor for the specified hash algorithm.
--
1.8.3.1
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