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path: root/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
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Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c')
-rw-r--r--drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c374
1 files changed, 81 insertions, 293 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
index 54f0a81f7b51..1515163a81a5 100644
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
+++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
@@ -50,331 +50,119 @@
#include "../../include/obd_support.h"
#include "../../include/lprocfs_status.h"
-#ifdef CONFIG_SYSCTL
-static struct ctl_table_header *obd_table_header;
-#endif
+struct static_lustre_uintvalue_attr {
+ struct {
+ struct attribute attr;
+ ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
+ char *buf);
+ ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t len);
+ } u;
+ int *value;
+};
-#ifdef CONFIG_SYSCTL
-static int proc_set_timeout(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static ssize_t static_uintvalue_show(struct kobject *kobj,
+ struct attribute *attr,
+ char *buf)
{
- int rc;
+ struct static_lustre_uintvalue_attr *lattr = (void *)attr;
- rc = proc_dointvec(table, write, buffer, lenp, ppos);
- if (ldlm_timeout >= obd_timeout)
- ldlm_timeout = max(obd_timeout / 3, 1U);
- return rc;
+ return sprintf(buf, "%d\n", *lattr->value);
}
-static int proc_memory_alloc(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static ssize_t static_uintvalue_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buffer, size_t count)
{
- char buf[22];
- int len;
-
- if (!*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
- }
- if (write)
- return -EINVAL;
+ struct static_lustre_uintvalue_attr *lattr = (void *)attr;
+ int rc;
+ unsigned int val;
- len = snprintf(buf, sizeof(buf), "%llu\n", obd_memory_sum());
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
- *ppos += *lenp;
- return 0;
-}
+ rc = kstrtouint(buffer, 10, &val);
+ if (rc)
+ return rc;
-static int proc_pages_alloc(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- char buf[22];
- int len;
+ *lattr->value = val;
- if (!*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
- }
- if (write)
- return -EINVAL;
-
- len = snprintf(buf, sizeof(buf), "%llu\n", obd_pages_sum());
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
- *ppos += *lenp;
- return 0;
+ return count;
}
-static int proc_mem_max(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
-{
- char buf[22];
- int len;
+#define LUSTRE_STATIC_UINT_ATTR(name, value) \
+static struct static_lustre_uintvalue_attr lustre_sattr_##name = \
+ {__ATTR(name, 0644, \
+ static_uintvalue_show, \
+ static_uintvalue_store),\
+ value }
- if (!*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
- }
- if (write)
- return -EINVAL;
+LUSTRE_STATIC_UINT_ATTR(timeout, &obd_timeout);
- len = snprintf(buf, sizeof(buf), "%llu\n", obd_memory_max());
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
- *ppos += *lenp;
- return 0;
+static ssize_t max_dirty_mb_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%ul\n",
+ obd_max_dirty_pages / (1 << (20 - PAGE_CACHE_SHIFT)));
}
-static int proc_pages_max(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static ssize_t max_dirty_mb_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer, size_t count)
{
- char buf[22];
- int len;
+ int rc;
+ unsigned long val;
- if (!*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
- }
- if (write)
- return -EINVAL;
+ rc = kstrtoul(buffer, 10, &val);
+ if (rc)
+ return rc;
- len = snprintf(buf, sizeof(buf), "%llu\n", obd_pages_max());
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
- *ppos += *lenp;
- return 0;
-}
+ val *= 1 << (20 - PAGE_CACHE_SHIFT); /* convert to pages */
-static int proc_max_dirty_pages_in_mb(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc = 0;
-
- if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
+ if (val > ((totalram_pages / 10) * 9)) {
+ /* Somebody wants to assign too much memory to dirty pages */
+ return -EINVAL;
}
- if (write) {
- rc = lprocfs_write_frac_helper(buffer, *lenp,
- (unsigned int *)table->data,
- 1 << (20 - PAGE_CACHE_SHIFT));
- /* Don't allow them to let dirty pages exceed 90% of system
- * memory and set a hard minimum of 4MB. */
- if (obd_max_dirty_pages > ((totalram_pages / 10) * 9)) {
- CERROR("Refusing to set max dirty pages to %u, which is more than 90%% of available RAM; setting to %lu\n",
- obd_max_dirty_pages,
- ((totalram_pages / 10) * 9));
- obd_max_dirty_pages = (totalram_pages / 10) * 9;
- } else if (obd_max_dirty_pages < 4 << (20 - PAGE_CACHE_SHIFT)) {
- obd_max_dirty_pages = 4 << (20 - PAGE_CACHE_SHIFT);
- }
- } else {
- char buf[21];
- int len;
- len = lprocfs_read_frac_helper(buf, sizeof(buf),
- *(unsigned int *)table->data,
- 1 << (20 - PAGE_CACHE_SHIFT));
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
+ if (val < 4 << (20 - PAGE_CACHE_SHIFT)) {
+ /* Less than 4 Mb for dirty cache is also bad */
+ return -EINVAL;
}
- *ppos += *lenp;
- return rc;
-}
-static int proc_alloc_fail_rate(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc = 0;
+ obd_max_dirty_pages = val;
- if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
- *lenp = 0;
- return 0;
- }
- if (write) {
- rc = lprocfs_write_frac_helper(buffer, *lenp,
- (unsigned int *)table->data,
- OBD_ALLOC_FAIL_MULT);
- } else {
- char buf[21];
- int len;
-
- len = lprocfs_read_frac_helper(buf, 21,
- *(unsigned int *)table->data,
- OBD_ALLOC_FAIL_MULT);
- if (len > *lenp)
- len = *lenp;
- buf[len] = '\0';
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
- *lenp = len;
- }
- *ppos += *lenp;
- return rc;
+ return count;
}
-
-static struct ctl_table obd_table[] = {
- {
- .procname = "timeout",
- .data = &obd_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_set_timeout
- },
- {
- .procname = "debug_peer_on_timeout",
- .data = &obd_debug_peer_on_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- },
- {
- .procname = "dump_on_timeout",
- .data = &obd_dump_on_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- },
- {
- .procname = "dump_on_eviction",
- .data = &obd_dump_on_eviction,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- },
- {
- .procname = "memused",
- .data = NULL,
- .maxlen = 0,
- .mode = 0444,
- .proc_handler = &proc_memory_alloc
- },
- {
- .procname = "pagesused",
- .data = NULL,
- .maxlen = 0,
- .mode = 0444,
- .proc_handler = &proc_pages_alloc
- },
- {
- .procname = "memused_max",
- .data = NULL,
- .maxlen = 0,
- .mode = 0444,
- .proc_handler = &proc_mem_max
- },
- {
- .procname = "pagesused_max",
- .data = NULL,
- .maxlen = 0,
- .mode = 0444,
- .proc_handler = &proc_pages_max
- },
- {
- .procname = "ldlm_timeout",
- .data = &ldlm_timeout,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_set_timeout
- },
- {
- .procname = "alloc_fail_rate",
- .data = &obd_alloc_fail_rate,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_alloc_fail_rate
- },
- {
- .procname = "max_dirty_mb",
- .data = &obd_max_dirty_pages,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_max_dirty_pages_in_mb
- },
- {
- .procname = "at_min",
- .data = &at_min,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "at_max",
- .data = &at_max,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "at_extra",
- .data = &at_extra,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "at_early_margin",
- .data = &at_early_margin,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "at_history",
- .data = &at_history,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {}
+LUSTRE_RW_ATTR(max_dirty_mb);
+
+LUSTRE_STATIC_UINT_ATTR(debug_peer_on_timeout, &obd_debug_peer_on_timeout);
+LUSTRE_STATIC_UINT_ATTR(dump_on_timeout, &obd_dump_on_timeout);
+LUSTRE_STATIC_UINT_ATTR(dump_on_eviction, &obd_dump_on_eviction);
+LUSTRE_STATIC_UINT_ATTR(at_min, &at_min);
+LUSTRE_STATIC_UINT_ATTR(at_max, &at_max);
+LUSTRE_STATIC_UINT_ATTR(at_extra, &at_extra);
+LUSTRE_STATIC_UINT_ATTR(at_early_margin, &at_early_margin);
+LUSTRE_STATIC_UINT_ATTR(at_history, &at_history);
+
+static struct attribute *lustre_attrs[] = {
+ &lustre_sattr_timeout.u.attr,
+ &lustre_attr_max_dirty_mb.attr,
+ &lustre_sattr_debug_peer_on_timeout.u.attr,
+ &lustre_sattr_dump_on_timeout.u.attr,
+ &lustre_sattr_dump_on_eviction.u.attr,
+ &lustre_sattr_at_min.u.attr,
+ &lustre_sattr_at_max.u.attr,
+ &lustre_sattr_at_extra.u.attr,
+ &lustre_sattr_at_early_margin.u.attr,
+ &lustre_sattr_at_history.u.attr,
+ NULL,
};
-static struct ctl_table parent_table[] = {
- {
- .procname = "lustre",
- .data = NULL,
- .maxlen = 0,
- .mode = 0555,
- .child = obd_table
- },
- {}
+static struct attribute_group lustre_attr_group = {
+ .attrs = lustre_attrs,
};
-#endif
-void obd_sysctl_init(void)
+int obd_sysctl_init(void)
{
-#ifdef CONFIG_SYSCTL
- if (!obd_table_header)
- obd_table_header = register_sysctl_table(parent_table);
-#endif
+ return sysfs_create_group(lustre_kobj, &lustre_attr_group);
}
void obd_sysctl_clean(void)
{
-#ifdef CONFIG_SYSCTL
- if (obd_table_header)
- unregister_sysctl_table(obd_table_header);
- obd_table_header = NULL;
-#endif
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.