From: Steve French <stfrench@microsoft.com>
Date: Tue, 31 Jul 2018 01:21:37 -0500
Subject: [PATCH] cifs: simple stats should always be enabled
Git-commit: fcabb89299d79010eb923afdd26de04afcc0527f
Patch-mainline: v4.18
References: bsc#1144333
CONFIG_CIFS_STATS should always be enabled as Pavel recently
noted. Simple statistics are not a significant performance hit,
and removing the ifdef simplifies the code slightly.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Acked-by: Aurelien Aptel <aaptel@suse.com>
---
fs/cifs/Kconfig | 9 +--------
fs/cifs/cifs_debug.c | 6 ------
fs/cifs/cifsglob.h | 10 ----------
fs/cifs/misc.c | 2 --
fs/cifs/smb1ops.c | 4 ----
fs/cifs/smb2ops.c | 4 ----
fs/cifs/smb2pdu.c | 2 --
7 files changed, 1 insertion(+), 36 deletions(-)
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -49,16 +49,9 @@ config CIFS
If you need to mount to Samba, Azure, Macs or Windows from this machine, say Y.
-config CIFS_STATS
- bool "CIFS statistics"
- depends on CIFS
- help
- Enabling this option will cause statistics for each server share
- mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
-
config CIFS_STATS2
bool "Extended statistics"
- depends on CIFS_STATS
+ depends on CIFS
help
Enabling this option will allow more detailed statistics on SMB
request timing to be displayed in /proc/fs/cifs/DebugData and also
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -377,7 +377,6 @@ static const struct file_operations cifs
.release = single_release,
};
-#ifdef CONFIG_CIFS_STATS
static ssize_t cifs_stats_proc_write(struct file *file,
const char __user *buffer, size_t count, loff_t *ppos)
{
@@ -493,7 +492,6 @@ static const struct file_operations cifs
.release = single_release,
.write = cifs_stats_proc_write,
};
-#endif /* STATS */
#ifdef CONFIG_CIFS_SMB_DIRECT
#define PROC_FILE_DEFINE(name) \
@@ -550,9 +548,7 @@ cifs_proc_init(void)
proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
-#ifdef CONFIG_CIFS_STATS
proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
-#endif /* STATS */
proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
@@ -590,9 +586,7 @@ cifs_proc_clean(void)
remove_proc_entry("DebugData", proc_fs_cifs);
remove_proc_entry("cifsFYI", proc_fs_cifs);
remove_proc_entry("traceSMB", proc_fs_cifs);
-#ifdef CONFIG_CIFS_STATS
remove_proc_entry("Stats", proc_fs_cifs);
-#endif
remove_proc_entry("SecurityFlags", proc_fs_cifs);
remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -931,7 +931,6 @@ struct cifs_tcon {
__u32 tid; /* The 4 byte tree id */
__u16 Flags; /* optional support bits */
enum statusEnum tidStatus;
-#ifdef CONFIG_CIFS_STATS
atomic_t num_smbs_sent;
union {
struct {
@@ -965,7 +964,6 @@ struct cifs_tcon {
__u64 bytes_read;
__u64 bytes_written;
spinlock_t stat_lock; /* protects the two fields above */
-#endif /* CONFIG_CIFS_STATS */
FILE_SYSTEM_DEVICE_INFO fsDevInfo;
FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
FILE_SYSTEM_UNIX_INFO fsUnixInfo;
@@ -1331,7 +1329,6 @@ convert_delimiter(char *path, char delim
*pos = delim;
}
-#ifdef CONFIG_CIFS_STATS
#define cifs_stats_inc atomic_inc
static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
@@ -1351,13 +1348,6 @@ static inline void cifs_stats_bytes_read
tcon->bytes_read += bytes;
spin_unlock(&tcon->stat_lock);
}
-#else
-
-#define cifs_stats_inc(field) do {} while (0)
-#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
-#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
-
-#endif
/*
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -122,9 +122,7 @@ tconInfoAlloc(void)
mutex_init(&ret_buf->crfid.fid_mutex);
ret_buf->crfid.fid = kzalloc(sizeof(struct cifs_fid),
GFP_KERNEL);
-#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
-#endif
}
return ret_buf;
}
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -624,7 +624,6 @@ cifs_query_file_info(const unsigned int
static void
cifs_clear_stats(struct cifs_tcon *tcon)
{
-#ifdef CONFIG_CIFS_STATS
atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
@@ -646,13 +645,11 @@ cifs_clear_stats(struct cifs_tcon *tcon)
atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
-#endif
}
static void
cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
{
-#ifdef CONFIG_CIFS_STATS
seq_printf(m, " Oplocks breaks: %d",
atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
seq_printf(m, "\nReads: %d Bytes: %llu",
@@ -684,7 +681,6 @@ cifs_print_stats(struct seq_file *m, str
atomic_read(&tcon->stats.cifs_stats.num_ffirst),
atomic_read(&tcon->stats.cifs_stats.num_fnext),
atomic_read(&tcon->stats.cifs_stats.num_fclose));
-#endif
}
static void
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -900,13 +900,11 @@ smb2_can_echo(struct TCP_Server_Info *se
static void
smb2_clear_stats(struct cifs_tcon *tcon)
{
-#ifdef CONFIG_CIFS_STATS
int i;
for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
}
-#endif
}
static void
@@ -945,7 +943,6 @@ smb2_dump_share_caps(struct seq_file *m,
static void
smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
{
-#ifdef CONFIG_CIFS_STATS
atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
@@ -995,7 +992,6 @@ smb2_print_stats(struct seq_file *m, str
seq_printf(m, "\nOplockBreaks: %d sent %d failed",
atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
-#endif
}
static void
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -360,10 +360,8 @@ smb2_plain_req_init(__le16 smb2_command,
total_len);
if (tcon != NULL) {
-#ifdef CONFIG_CIFS_STATS
uint16_t com_code = le16_to_cpu(smb2_command);
cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]);
-#endif
cifs_stats_inc(&tcon->num_smbs_sent);
}