cifs: simple stats should always be enabled
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>
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Steve French
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@ -49,16 +49,9 @@ config CIFS
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If you need to mount to Samba, Azure, Macs or Windows from this machine, say Y.
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config CIFS_STATS
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bool "CIFS statistics"
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depends on CIFS
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help
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Enabling this option will cause statistics for each server share
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mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
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config CIFS_STATS2
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bool "Extended statistics"
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depends on CIFS_STATS
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depends on CIFS
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help
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Enabling this option will allow more detailed statistics on SMB
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request timing to be displayed in /proc/fs/cifs/DebugData and also
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@ -365,7 +365,6 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
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return 0;
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}
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#ifdef CONFIG_CIFS_STATS
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static ssize_t cifs_stats_proc_write(struct file *file,
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const char __user *buffer, size_t count, loff_t *ppos)
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{
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@ -481,7 +480,6 @@ static const struct file_operations cifs_stats_proc_fops = {
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.release = single_release,
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.write = cifs_stats_proc_write,
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};
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#endif /* STATS */
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#ifdef CONFIG_CIFS_SMB_DIRECT
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#define PROC_FILE_DEFINE(name) \
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@ -539,9 +537,7 @@ cifs_proc_init(void)
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proc_create_single("DebugData", 0, proc_fs_cifs,
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cifs_debug_data_proc_show);
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#ifdef CONFIG_CIFS_STATS
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proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
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#endif /* STATS */
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proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
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proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
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proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
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@ -579,9 +575,7 @@ cifs_proc_clean(void)
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remove_proc_entry("DebugData", proc_fs_cifs);
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remove_proc_entry("cifsFYI", proc_fs_cifs);
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remove_proc_entry("traceSMB", proc_fs_cifs);
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#ifdef CONFIG_CIFS_STATS
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remove_proc_entry("Stats", proc_fs_cifs);
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#endif
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remove_proc_entry("SecurityFlags", proc_fs_cifs);
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remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
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remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
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@ -931,7 +931,6 @@ struct cifs_tcon {
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__u32 tid; /* The 4 byte tree id */
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__u16 Flags; /* optional support bits */
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enum statusEnum tidStatus;
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#ifdef CONFIG_CIFS_STATS
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atomic_t num_smbs_sent;
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union {
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struct {
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@ -965,7 +964,6 @@ struct cifs_tcon {
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__u64 bytes_read;
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__u64 bytes_written;
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spinlock_t stat_lock; /* protects the two fields above */
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#endif /* CONFIG_CIFS_STATS */
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FILE_SYSTEM_DEVICE_INFO fsDevInfo;
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FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
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FILE_SYSTEM_UNIX_INFO fsUnixInfo;
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@ -1331,7 +1329,6 @@ convert_delimiter(char *path, char delim)
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*pos = delim;
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}
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#ifdef CONFIG_CIFS_STATS
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#define cifs_stats_inc atomic_inc
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static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
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@ -1351,13 +1348,6 @@ static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
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tcon->bytes_read += bytes;
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spin_unlock(&tcon->stat_lock);
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}
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#else
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#define cifs_stats_inc(field) do {} while (0)
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#define cifs_stats_bytes_written(tcon, bytes) do {} while (0)
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#define cifs_stats_bytes_read(tcon, bytes) do {} while (0)
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#endif
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/*
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@ -122,9 +122,7 @@ tconInfoAlloc(void)
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mutex_init(&ret_buf->crfid.fid_mutex);
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ret_buf->crfid.fid = kzalloc(sizeof(struct cifs_fid),
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GFP_KERNEL);
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#ifdef CONFIG_CIFS_STATS
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spin_lock_init(&ret_buf->stat_lock);
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#endif
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}
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return ret_buf;
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}
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@ -624,7 +624,6 @@ cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
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static void
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cifs_clear_stats(struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
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atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
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atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
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@ -646,13 +645,11 @@ cifs_clear_stats(struct cifs_tcon *tcon)
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atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
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atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
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atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
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#endif
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}
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static void
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cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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seq_printf(m, " Oplocks breaks: %d",
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atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
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seq_printf(m, "\nReads: %d Bytes: %llu",
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@ -684,7 +681,6 @@ cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
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atomic_read(&tcon->stats.cifs_stats.num_ffirst),
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atomic_read(&tcon->stats.cifs_stats.num_fnext),
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atomic_read(&tcon->stats.cifs_stats.num_fclose));
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#endif
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}
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static void
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@ -900,13 +900,11 @@ smb2_can_echo(struct TCP_Server_Info *server)
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static void
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smb2_clear_stats(struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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int i;
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for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
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atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
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atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
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}
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#endif
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}
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static void
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@ -945,7 +943,6 @@ smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
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static void
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smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
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atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
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@ -995,7 +992,6 @@ smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
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seq_printf(m, "\nOplockBreaks: %d sent %d failed",
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atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
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atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
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#endif
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}
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static void
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@ -360,10 +360,8 @@ smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
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total_len);
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if (tcon != NULL) {
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#ifdef CONFIG_CIFS_STATS
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uint16_t com_code = le16_to_cpu(smb2_command);
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cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]);
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#endif
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cifs_stats_inc(&tcon->num_smbs_sent);
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}
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