#include <linux/file.h>
#include <linux/list.h>
-#include <linux/proc_fs.h>
#include <linux/sysctl.h>
+#include <linux/debugfs.h>
# define DEBUG_SUBSYSTEM S_LNET
MODULE_DESCRIPTION("Portals v3.1");
MODULE_LICENSE("GPL");
-extern struct miscdevice libcfs_dev;
-extern struct rw_semaphore cfs_tracefile_sem;
-extern struct mutex cfs_trace_thread_mutex;
-extern struct cfs_wi_sched *cfs_sched_rehash;
-extern void libcfs_init_nidstrings(void);
+static struct dentry *lnet_debugfs_root;
-static int insert_proc(void);
-static void remove_proc(void);
-
-static struct ctl_table_header *lnet_table_header;
-extern char lnet_upcall[1024];
-/**
- * The path of debug log dump upcall script.
- */
-extern char lnet_debug_log_upcall[1024];
-
-#define CTL_LNET (0x100)
-
-enum {
- PSDEV_DEBUG = 1, /* control debugging */
- PSDEV_SUBSYSTEM_DEBUG, /* control debugging */
- PSDEV_PRINTK, /* force all messages to console */
- PSDEV_CONSOLE_RATELIMIT, /* ratelimit console messages */
- PSDEV_CONSOLE_MAX_DELAY_CS, /* maximum delay over which we skip messages */
- PSDEV_CONSOLE_MIN_DELAY_CS, /* initial delay over which we skip messages */
- PSDEV_CONSOLE_BACKOFF, /* delay increase factor */
- PSDEV_DEBUG_PATH, /* crashdump log location */
- PSDEV_DEBUG_DUMP_PATH, /* crashdump tracelog location */
- PSDEV_CPT_TABLE, /* information about cpu partitions */
- PSDEV_LNET_UPCALL, /* User mode upcall script */
- PSDEV_LNET_MEMUSED, /* bytes currently PORTAL_ALLOCated */
- PSDEV_LNET_CATASTROPHE, /* if we have LBUGged or panic'd */
- PSDEV_LNET_PANIC_ON_LBUG, /* flag to panic on LBUG */
- PSDEV_LNET_DUMP_KERNEL, /* snapshot kernel debug buffer to file */
- PSDEV_LNET_DAEMON_FILE, /* spool kernel debug buffer to file */
- PSDEV_LNET_DEBUG_MB, /* size of debug buffer */
- PSDEV_LNET_DEBUG_LOG_UPCALL, /* debug log upcall script */
- PSDEV_LNET_WATCHDOG_RATELIMIT, /* ratelimit watchdog messages */
- PSDEV_LNET_FORCE_LBUG, /* hook to force an LBUG */
- PSDEV_LNET_FAIL_LOC, /* control test failures instrumentation */
- PSDEV_LNET_FAIL_VAL, /* userdata for fail loc */
-};
-
-static void kportal_memhog_free (struct libcfs_device_userstate *ldu)
+static void kportal_memhog_free(struct libcfs_device_userstate *ldu)
{
struct page **level0p = &ldu->ldu_memhog_root_page;
struct page **level1p;
*level0p = NULL;
}
- LASSERT (ldu->ldu_memhog_pages == 0);
+ LASSERT(ldu->ldu_memhog_pages == 0);
}
static int kportal_memhog_alloc(struct libcfs_device_userstate *ldu, int npages,
int count1;
int count2;
- LASSERT (ldu->ldu_memhog_pages == 0);
- LASSERT (ldu->ldu_memhog_root_page == NULL);
+ LASSERT(ldu->ldu_memhog_pages == 0);
+ LASSERT(ldu->ldu_memhog_root_page == NULL);
if (npages < 0)
return -EINVAL;
return 0;
}
-static struct rw_semaphore ioctl_list_sem;
-static struct list_head ioctl_list;
+static DECLARE_RWSEM(ioctl_list_sem);
+static LIST_HEAD(ioctl_list);
int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand)
{
}
break;
- case IOC_LIBCFS_PING_TEST: {
- extern void (kping_client)(struct libcfs_ioctl_data *);
- void (*ping)(struct libcfs_ioctl_data *);
-
- CDEBUG(D_IOCTL, "doing %d pings to nid %s (%s)\n",
- data->ioc_count, libcfs_nid2str(data->ioc_nid),
- libcfs_nid2str(data->ioc_nid));
- ping = symbol_get(kping_client);
- if (!ping)
- CERROR("symbol_get failed\n");
- else {
- ping(data);
- symbol_put(kping_client);
- }
- return 0;
- }
-
default: {
struct libcfs_ioctl_handler *hand;
+
err = -EINVAL;
down_read(&ioctl_list_sem);
list_for_each_entry(hand, &ioctl_list, item) {
if (err != -EINVAL) {
if (err == 0)
err = libcfs_ioctl_popdata(arg,
- data, sizeof (*data));
+ data, sizeof(*data));
break;
}
}
struct libcfs_ioctl_data *data;
int err = 0;
- LIBCFS_ALLOC_GFP(buf, 1024, GFP_IOFS);
+ LIBCFS_ALLOC_GFP(buf, 1024, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
/* 'cmd' and permissions get checked in our arch-specific caller */
- if (libcfs_ioctl_getdata(buf, buf + 800, (void *)arg)) {
+ if (libcfs_ioctl_getdata(buf, buf + 800, arg)) {
CERROR("PORTALS ioctl: data error\n");
err = -EINVAL;
goto out;
return err;
}
-
struct cfs_psdev_ops libcfs_psdev_ops = {
libcfs_psdev_open,
libcfs_psdev_release,
libcfs_ioctl
};
-static int init_libcfs_module(void)
-{
- int rc;
-
- libcfs_arch_init();
- libcfs_init_nidstrings();
- init_rwsem(&cfs_tracefile_sem);
- mutex_init(&cfs_trace_thread_mutex);
- init_rwsem(&ioctl_list_sem);
- INIT_LIST_HEAD(&ioctl_list);
- init_waitqueue_head(&cfs_race_waitq);
-
- rc = libcfs_debug_init(5 * 1024 * 1024);
- if (rc < 0) {
- pr_err("LustreError: libcfs_debug_init: %d\n", rc);
- return rc;
- }
-
- rc = cfs_cpu_init();
- if (rc != 0)
- goto cleanup_debug;
-
- rc = misc_register(&libcfs_dev);
- if (rc) {
- CERROR("misc_register: error %d\n", rc);
- goto cleanup_cpu;
- }
-
- rc = cfs_wi_startup();
- if (rc) {
- CERROR("initialize workitem: error %d\n", rc);
- goto cleanup_deregister;
- }
-
- /* max to 4 threads, should be enough for rehash */
- rc = min(cfs_cpt_weight(cfs_cpt_table, CFS_CPT_ANY), 4);
- rc = cfs_wi_sched_create("cfs_rh", cfs_cpt_table, CFS_CPT_ANY,
- rc, &cfs_sched_rehash);
- if (rc != 0) {
- CERROR("Startup workitem scheduler: error: %d\n", rc);
- goto cleanup_deregister;
- }
-
- rc = cfs_crypto_register();
- if (rc) {
- CERROR("cfs_crypto_register: error %d\n", rc);
- goto cleanup_wi;
- }
-
-
- rc = insert_proc();
- if (rc) {
- CERROR("insert_proc: error %d\n", rc);
- goto cleanup_crypto;
- }
-
- CDEBUG (D_OTHER, "portals setup OK\n");
- return 0;
- cleanup_crypto:
- cfs_crypto_unregister();
- cleanup_wi:
- cfs_wi_shutdown();
- cleanup_deregister:
- misc_deregister(&libcfs_dev);
-cleanup_cpu:
- cfs_cpu_fini();
- cleanup_debug:
- libcfs_debug_cleanup();
- return rc;
-}
-
-static void exit_libcfs_module(void)
-{
- int rc;
-
- remove_proc();
-
- CDEBUG(D_MALLOC, "before Portals cleanup: kmem %d\n",
- atomic_read(&libcfs_kmemory));
-
- if (cfs_sched_rehash != NULL) {
- cfs_wi_sched_destroy(cfs_sched_rehash);
- cfs_sched_rehash = NULL;
- }
-
- cfs_crypto_unregister();
- cfs_wi_shutdown();
-
- rc = misc_deregister(&libcfs_dev);
- if (rc)
- CERROR("misc_deregister error %d\n", rc);
-
- cfs_cpu_fini();
-
- if (atomic_read(&libcfs_kmemory) != 0)
- CERROR("Portals memory leaked: %d bytes\n",
- atomic_read(&libcfs_kmemory));
-
- rc = libcfs_debug_cleanup();
- if (rc)
- pr_err("LustreError: libcfs_debug_cleanup: %d\n", rc);
-
- libcfs_arch_cleanup();
-}
-
static int proc_call_handler(void *data, int write, loff_t *ppos,
void __user *buffer, size_t *lenp,
int (*handler)(void *data, int write,
__proc_dobitmasks);
}
-static int min_watchdog_ratelimit; /* disable ratelimiting */
-static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */
-
static int __proc_dump_kernel(void *data, int write,
loff_t pos, void __user *buffer, int nob)
{
__proc_daemon_file);
}
-static int __proc_debug_mb(void *data, int write,
- loff_t pos, void __user *buffer, int nob)
-{
- if (!write) {
- char tmpstr[32];
- int len = snprintf(tmpstr, sizeof(tmpstr), "%d",
- cfs_trace_get_debug_mb());
-
- if (pos >= len)
- return 0;
-
- return cfs_trace_copyout_string(buffer, nob, tmpstr + pos,
- "\n");
- }
-
- return cfs_trace_set_debug_mb_usrstr(buffer, nob);
-}
-
-static int proc_debug_mb(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- return proc_call_handler(table->data, write, ppos, buffer, lenp,
- __proc_debug_mb);
-}
-
-static int proc_console_max_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- int rc, max_delay_cs;
- struct ctl_table dummy = *table;
- long d;
-
- dummy.data = &max_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- max_delay_cs = cfs_duration_sec(libcfs_console_max_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- max_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (max_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(max_delay_cs) / 100;
- if (d == 0 || d < libcfs_console_min_delay)
- return -EINVAL;
- libcfs_console_max_delay = d;
-
- return rc;
-}
-
-static int proc_console_min_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- int rc, min_delay_cs;
- struct ctl_table dummy = *table;
- long d;
-
- dummy.data = &min_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- min_delay_cs = cfs_duration_sec(libcfs_console_min_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- min_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (min_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(min_delay_cs) / 100;
- if (d == 0 || d > libcfs_console_max_delay)
- return -EINVAL;
- libcfs_console_min_delay = d;
-
- return rc;
-}
-
-static int proc_console_backoff(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc, backoff;
- struct ctl_table dummy = *table;
-
- dummy.data = &backoff;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- backoff = libcfs_console_backoff;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- backoff = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (backoff <= 0)
- return -EINVAL;
-
- libcfs_console_backoff = backoff;
-
- return rc;
-}
-
static int libcfs_force_lbug(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
.mode = 0644,
.proc_handler = &proc_dobitmasks,
},
- {
- .procname = "console_ratelimit",
- .data = &libcfs_console_ratelimit,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- },
- {
- .procname = "console_max_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_max_delay_cs
- },
- {
- .procname = "console_min_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_min_delay_cs
- },
- {
- .procname = "console_backoff",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_backoff
- },
-
- {
- .procname = "debug_path",
- .data = libcfs_debug_file_path_arr,
- .maxlen = sizeof(libcfs_debug_file_path_arr),
- .mode = 0644,
- .proc_handler = &proc_dostring,
- },
-
{
.procname = "cpu_partition_table",
.maxlen = 128,
.mode = 0644,
.proc_handler = &proc_dostring,
},
- {
- .procname = "lnet_memused",
- .data = (int *)&libcfs_kmemory.counter,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = &proc_dointvec,
- },
{
.procname = "catastrophe",
.data = &libcfs_catastrophe,
.mode = 0444,
.proc_handler = &proc_dointvec,
},
- {
- .procname = "panic_on_lbug",
- .data = &libcfs_panic_on_lbug,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
{
.procname = "dump_kernel",
.maxlen = 256,
.maxlen = 256,
.proc_handler = &proc_daemon_file,
},
- {
- .procname = "debug_mb",
- .mode = 0644,
- .proc_handler = &proc_debug_mb,
- },
- {
- .procname = "watchdog_ratelimit",
- .data = &libcfs_watchdog_ratelimit,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .extra1 = &min_watchdog_ratelimit,
- .extra2 = &max_watchdog_ratelimit,
- },
{
.procname = "force_lbug",
.data = NULL,
}
};
-static struct ctl_table top_table[] = {
- {
- .procname = "lnet",
- .mode = 0555,
- .data = NULL,
- .maxlen = 0,
- .child = lnet_table,
- },
- {
- }
+static const struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
+ { "console_ratelimit",
+ "/sys/module/libcfs/parameters/libcfs_console_ratelimit"},
+ { "debug_path",
+ "/sys/module/libcfs/parameters/libcfs_debug_file_path"},
+ { "panic_on_lbug",
+ "/sys/module/libcfs/parameters/libcfs_panic_on_lbug"},
+ { "libcfs_console_backoff",
+ "/sys/module/libcfs/parameters/libcfs_console_backoff"},
+ { "debug_mb",
+ "/sys/module/libcfs/parameters/libcfs_debug_mb"},
+ { "console_min_delay_centisecs",
+ "/sys/module/libcfs/parameters/libcfs_console_min_delay"},
+ { "console_max_delay_centisecs",
+ "/sys/module/libcfs/parameters/libcfs_console_max_delay"},
+ {},
+};
+
+static ssize_t lnet_debugfs_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ctl_table *table = filp->private_data;
+ int error;
+
+ error = table->proc_handler(table, 0, (void __user *)buf, &count, ppos);
+ if (!error)
+ error = count;
+
+ return error;
+}
+
+static ssize_t lnet_debugfs_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ctl_table *table = filp->private_data;
+ int error;
+
+ error = table->proc_handler(table, 1, (void __user *)buf, &count, ppos);
+ if (!error)
+ error = count;
+
+ return error;
+}
+
+static const struct file_operations lnet_debugfs_file_operations = {
+ .open = simple_open,
+ .read = lnet_debugfs_read,
+ .write = lnet_debugfs_write,
+ .llseek = default_llseek,
};
-static int insert_proc(void)
+void lustre_insert_debugfs(struct ctl_table *table,
+ const struct lnet_debugfs_symlink_def *symlinks)
+{
+ struct dentry *entry;
+
+ if (lnet_debugfs_root == NULL)
+ lnet_debugfs_root = debugfs_create_dir("lnet", NULL);
+
+ /* Even if we cannot create, just ignore it altogether) */
+ if (IS_ERR_OR_NULL(lnet_debugfs_root))
+ return;
+
+ for (; table->procname; table++)
+ entry = debugfs_create_file(table->procname, table->mode,
+ lnet_debugfs_root, table,
+ &lnet_debugfs_file_operations);
+
+ for (; symlinks && symlinks->name; symlinks++)
+ entry = debugfs_create_symlink(symlinks->name,
+ lnet_debugfs_root,
+ symlinks->target);
+
+}
+EXPORT_SYMBOL_GPL(lustre_insert_debugfs);
+
+static void lustre_remove_debugfs(void)
{
- if (lnet_table_header == NULL)
- lnet_table_header = register_sysctl_table(top_table);
+ if (lnet_debugfs_root != NULL)
+ debugfs_remove_recursive(lnet_debugfs_root);
+
+ lnet_debugfs_root = NULL;
+}
+
+static int init_libcfs_module(void)
+{
+ int rc;
+
+ rc = libcfs_debug_init(5 * 1024 * 1024);
+ if (rc < 0) {
+ pr_err("LustreError: libcfs_debug_init: %d\n", rc);
+ return rc;
+ }
+
+ rc = cfs_cpu_init();
+ if (rc != 0)
+ goto cleanup_debug;
+
+ rc = misc_register(&libcfs_dev);
+ if (rc) {
+ CERROR("misc_register: error %d\n", rc);
+ goto cleanup_cpu;
+ }
+
+ rc = cfs_wi_startup();
+ if (rc) {
+ CERROR("initialize workitem: error %d\n", rc);
+ goto cleanup_deregister;
+ }
+
+ /* max to 4 threads, should be enough for rehash */
+ rc = min(cfs_cpt_weight(cfs_cpt_table, CFS_CPT_ANY), 4);
+ rc = cfs_wi_sched_create("cfs_rh", cfs_cpt_table, CFS_CPT_ANY,
+ rc, &cfs_sched_rehash);
+ if (rc != 0) {
+ CERROR("Startup workitem scheduler: error: %d\n", rc);
+ goto cleanup_deregister;
+ }
+
+ rc = cfs_crypto_register();
+ if (rc) {
+ CERROR("cfs_crypto_register: error %d\n", rc);
+ goto cleanup_wi;
+ }
+
+ lustre_insert_debugfs(lnet_table, lnet_debugfs_symlinks);
+
+ CDEBUG(D_OTHER, "portals setup OK\n");
return 0;
+ cleanup_wi:
+ cfs_wi_shutdown();
+ cleanup_deregister:
+ misc_deregister(&libcfs_dev);
+cleanup_cpu:
+ cfs_cpu_fini();
+ cleanup_debug:
+ libcfs_debug_cleanup();
+ return rc;
}
-static void remove_proc(void)
+static void exit_libcfs_module(void)
{
- if (lnet_table_header != NULL)
- unregister_sysctl_table(lnet_table_header);
+ int rc;
+
+ lustre_remove_debugfs();
+
+ if (cfs_sched_rehash) {
+ cfs_wi_sched_destroy(cfs_sched_rehash);
+ cfs_sched_rehash = NULL;
+ }
+
+ cfs_crypto_unregister();
+ cfs_wi_shutdown();
- lnet_table_header = NULL;
+ misc_deregister(&libcfs_dev);
+
+ cfs_cpu_fini();
+
+ rc = libcfs_debug_cleanup();
+ if (rc)
+ pr_err("LustreError: libcfs_debug_cleanup: %d\n", rc);
}
MODULE_VERSION("1.0.0");
Code Review / kvmfornfv.git / blobdiff