diff options
| author | Thorsten Winkler <twinkler@linux.ibm.com> | 2023-06-21 15:49:21 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-06-23 11:55:55 +0200 |
| commit | 1471d85ffba7d17456670afa1b75e50234caa2c6 (patch) | |
| tree | d98ccc06aa26847aeb4dc1f181edabe9ba8b2b02 /drivers/s390/net/ctcm_sysfs.c | |
| parent | d585e4b7480615031f798ef25e4012bfe53ff135 (diff) | |
s390/ctcm: Convert sprintf/snprintf to scnprintf
This LWN article explains the why scnprintf is preferred over snprintf
in general
https://lwn.net/Articles/69419/
Ie. snprintf() returns what *would* be the resulting length, while
scnprintf() returns the actual length.
Note that ctcm_print_statistics() writes the data into the kernel log
and is therefore not suitable for sysfs_emit(). Observable behavior is
not changed, as there may be dependencies.
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/s390/net/ctcm_sysfs.c')
| -rw-r--r-- | drivers/s390/net/ctcm_sysfs.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c index 98680c2cc4e4..0c5d8a3eaa2e 100644 --- a/drivers/s390/net/ctcm_sysfs.c +++ b/drivers/s390/net/ctcm_sysfs.c @@ -86,24 +86,24 @@ static void ctcm_print_statistics(struct ctcm_priv *priv) return; p = sbuf; - p += sprintf(p, " Device FSM state: %s\n", - fsm_getstate_str(priv->fsm)); - p += sprintf(p, " RX channel FSM state: %s\n", - fsm_getstate_str(priv->channel[CTCM_READ]->fsm)); - p += sprintf(p, " TX channel FSM state: %s\n", - fsm_getstate_str(priv->channel[CTCM_WRITE]->fsm)); - p += sprintf(p, " Max. TX buffer used: %ld\n", - priv->channel[WRITE]->prof.maxmulti); - p += sprintf(p, " Max. chained SKBs: %ld\n", - priv->channel[WRITE]->prof.maxcqueue); - p += sprintf(p, " TX single write ops: %ld\n", - priv->channel[WRITE]->prof.doios_single); - p += sprintf(p, " TX multi write ops: %ld\n", - priv->channel[WRITE]->prof.doios_multi); - p += sprintf(p, " Netto bytes written: %ld\n", - priv->channel[WRITE]->prof.txlen); - p += sprintf(p, " Max. TX IO-time: %u\n", - jiffies_to_usecs(priv->channel[WRITE]->prof.tx_time)); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " Device FSM state: %s\n", + fsm_getstate_str(priv->fsm)); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " RX channel FSM state: %s\n", + fsm_getstate_str(priv->channel[CTCM_READ]->fsm)); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " TX channel FSM state: %s\n", + fsm_getstate_str(priv->channel[CTCM_WRITE]->fsm)); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " Max. TX buffer used: %ld\n", + priv->channel[WRITE]->prof.maxmulti); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " Max. chained SKBs: %ld\n", + priv->channel[WRITE]->prof.maxcqueue); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " TX single write ops: %ld\n", + priv->channel[WRITE]->prof.doios_single); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " TX multi write ops: %ld\n", + priv->channel[WRITE]->prof.doios_multi); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " Netto bytes written: %ld\n", + priv->channel[WRITE]->prof.txlen); + p += scnprintf(p, CTCM_STATSIZE_LIMIT, " Max. TX IO-time: %u\n", + jiffies_to_usecs(priv->channel[WRITE]->prof.tx_time)); printk(KERN_INFO "Statistics for %s:\n%s", priv->channel[CTCM_WRITE]->netdev->name, sbuf); |