diff options
| author | Olga Kornievskaia <kolga@netapp.com> | 2021-06-08 22:59:21 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-07-08 21:03:24 +0300 |
| commit | 0e5590358770ae779f3a8f5c36a3fbde40e344dc (patch) | |
| tree | 216ee45ffeb8de637135f1f32bbc458047efb2e5 /net/sunrpc/sysfs.c | |
| parent | 4a09651a6b28748af401a1dd5cf9cea06c3aa329 (diff) | |
| download | linux-0e5590358770ae779f3a8f5c36a3fbde40e344dc.tar.xz | |
sunrpc: provide multipath info in the sysfs directory
Allow to query xrpt_switch attributes. Currently showing the following
fields of the rpc_xprt_switch structure: xps_nxprts, xps_nactive,
xps_queuelen.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net/sunrpc/sysfs.c')
| -rw-r--r-- | net/sunrpc/sysfs.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c index f770eb7301b5..b3bc76bbc2a0 100644 --- a/net/sunrpc/sysfs.c +++ b/net/sunrpc/sysfs.c @@ -67,6 +67,15 @@ rpc_sysfs_xprt_kobj_get_xprt(struct kobject *kobj) return xprt_get(x->xprt); } +static inline struct rpc_xprt_switch * +rpc_sysfs_xprt_switch_kobj_get_xprt(struct kobject *kobj) +{ + struct rpc_sysfs_xprt_switch *x = container_of(kobj, + struct rpc_sysfs_xprt_switch, kobject); + + return xprt_switch_get(x->xprt_switch); +} + static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) @@ -102,6 +111,23 @@ static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj, return ret + 1; } +static ssize_t rpc_sysfs_xprt_switch_info_show(struct kobject *kobj, + struct kobj_attribute *attr, + char *buf) +{ + struct rpc_xprt_switch *xprt_switch = + rpc_sysfs_xprt_switch_kobj_get_xprt(kobj); + ssize_t ret; + + if (!xprt_switch) + return 0; + ret = sprintf(buf, "num_xprts=%u\nnum_active=%u\nqueue_len=%ld\n", + xprt_switch->xps_nxprts, xprt_switch->xps_nactive, + atomic_long_read(&xprt_switch->xps_queuelen)); + xprt_switch_put(xprt_switch); + return ret + 1; +} + static ssize_t rpc_sysfs_xprt_dstaddr_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) @@ -235,6 +261,14 @@ static struct attribute *rpc_sysfs_xprt_attrs[] = { NULL, }; +static struct kobj_attribute rpc_sysfs_xprt_switch_info = + __ATTR(xprt_switch_info, 0444, rpc_sysfs_xprt_switch_info_show, NULL); + +static struct attribute *rpc_sysfs_xprt_switch_attrs[] = { + &rpc_sysfs_xprt_switch_info.attr, + NULL, +}; + static struct kobj_type rpc_sysfs_client_type = { .release = rpc_sysfs_client_release, .sysfs_ops = &kobj_sysfs_ops, @@ -243,6 +277,7 @@ static struct kobj_type rpc_sysfs_client_type = { static struct kobj_type rpc_sysfs_xprt_switch_type = { .release = rpc_sysfs_xprt_switch_release, + .default_attrs = rpc_sysfs_xprt_switch_attrs, .sysfs_ops = &kobj_sysfs_ops, .namespace = rpc_sysfs_xprt_switch_namespace, }; |