From: Oleg Drokin Date: Thu, 21 May 2015 19:32:00 +0000 (-0400) Subject: staging/lustre/ldlm: move namespaces/early_lock_cancel to sysfs X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=87d32094efc208f31e4e3b226d25e58058352208;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git staging/lustre/ldlm: move namespaces/early_lock_cancel to sysfs Move ldlm display of early_lock_cancel from procfs to sysfs Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c index 4bba67874adb..667f2ca383a1 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c @@ -276,23 +276,27 @@ static ssize_t lru_size_store(struct kobject *kobj, struct attribute *attr, } LUSTRE_RW_ATTR(lru_size); -static int lprocfs_elc_seq_show(struct seq_file *m, void *v) +static ssize_t early_lock_cancel_show(struct kobject *kobj, + struct attribute *attr, + char *buf) { - struct ldlm_namespace *ns = m->private; - unsigned int supp = ns_connect_cancelset(ns); + struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace, + ns_kobj); - return lprocfs_rd_uint(m, &supp); + return sprintf(buf, "%d\n", ns_connect_cancelset(ns)); } -static ssize_t lprocfs_elc_seq_write(struct file *file, - const char __user *buffer, - size_t count, loff_t *off) +static ssize_t early_lock_cancel_store(struct kobject *kobj, + struct attribute *attr, + const char *buffer, + size_t count) { - struct ldlm_namespace *ns = ((struct seq_file *)file->private_data)->private; - unsigned int supp = -1; + struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace, + ns_kobj); + unsigned long supp = -1; int rc; - rc = lprocfs_wr_uint(file, buffer, count, &supp); + rc = kstrtoul(buffer, 10, &supp); if (rc < 0) return rc; @@ -302,13 +306,14 @@ static ssize_t lprocfs_elc_seq_write(struct file *file, ns->ns_connect_flags |= OBD_CONNECT_CANCELSET; return count; } -LPROC_SEQ_FOPS(lprocfs_elc); +LUSTRE_RW_ATTR(early_lock_cancel); /* These are for namespaces in /sys/fs/lustre/ldlm/namespaces/ */ static struct attribute *ldlm_ns_attrs[] = { &lustre_attr_resource_count.attr, &lustre_attr_lock_count.attr, &lustre_attr_lru_size.attr, + &lustre_attr_early_lock_cancel.attr, NULL, }; @@ -401,7 +406,6 @@ int ldlm_namespace_proc_register(struct ldlm_namespace *ns) &ldlm_uint_fops); LDLM_NS_ADD_VAR("lru_max_age", &ns->ns_max_age, &ldlm_rw_uint_fops); - LDLM_NS_ADD_VAR("early_lock_cancel", ns, &lprocfs_elc_fops); } else { LDLM_NS_ADD_VAR("ctime_age_limit", &ns->ns_ctime_age_limit, &ldlm_rw_uint_fops); diff --git a/drivers/staging/lustre/sysfs-fs-lustre b/drivers/staging/lustre/sysfs-fs-lustre index 0d379d0a6bb7..e54e4857dd53 100644 --- a/drivers/staging/lustre/sysfs-fs-lustre +++ b/drivers/staging/lustre/sysfs-fs-lustre @@ -222,3 +222,16 @@ Description: namespace. 0 - LRU size is unlimited, controlled by server resources positive number - number of locks to allow in lock LRU list + +What: /sys/fs/lustre/ldlm/namespaces//early_lock_cancel +Date: May 2015 +Contact: "Oleg Drokin" +Description: + Controls "early lock cancellation" feature on this namespace + if supported by the server. + When enabled, tries to preemtively cancel locks that would be + cancelled by verious operations and bundle the cancellation + requests in the same RPC as the main operation, which results + in significant speedups due to reduced lock-pingpong RPCs. + 0 - disabled + 1 - enabled (default)