X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fstaging%2Flustre%2Flustre%2Flibcfs%2Fmodule.c;h=e7c2b26156b9d36026a4a64a4e0565804bcc1312;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=f0ee76abfd5a4ad8d2d34096688fbafb5c7e3f90;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/kernel/drivers/staging/lustre/lustre/libcfs/module.c b/kernel/drivers/staging/lustre/lustre/libcfs/module.c index f0ee76abf..e7c2b2615 100644 --- a/kernel/drivers/staging/lustre/lustre/libcfs/module.c +++ b/kernel/drivers/staging/lustre/lustre/libcfs/module.c @@ -49,8 +49,8 @@ #include #include -#include #include +#include # define DEBUG_SUBSYSTEM S_LNET @@ -66,50 +66,9 @@ MODULE_AUTHOR("Peter J. Braam "); 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; @@ -149,7 +108,7 @@ static void kportal_memhog_free (struct libcfs_device_userstate *ldu) *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, @@ -161,8 +120,8 @@ 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; @@ -249,8 +208,8 @@ static int libcfs_psdev_release(unsigned long flags, void *args) 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) { @@ -315,25 +274,9 @@ static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, unsigned long cmd, } 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) { @@ -341,7 +284,7 @@ static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, unsigned long cmd, if (err != -EINVAL) { if (err == 0) err = libcfs_ioctl_popdata(arg, - data, sizeof (*data)); + data, sizeof(*data)); break; } } @@ -359,12 +302,12 @@ static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *a 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; @@ -378,7 +321,6 @@ out: return err; } - struct cfs_psdev_ops libcfs_psdev_ops = { libcfs_psdev_open, libcfs_psdev_release, @@ -387,111 +329,6 @@ struct cfs_psdev_ops libcfs_psdev_ops = { 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, @@ -559,9 +396,6 @@ static int proc_dobitmasks(struct ctl_table *table, 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) { @@ -601,125 +435,6 @@ static int proc_daemon_file(struct ctl_table *table, int write, __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) @@ -816,40 +531,6 @@ static struct ctl_table lnet_table[] = { .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, @@ -871,13 +552,6 @@ static struct ctl_table lnet_table[] = { .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, @@ -885,13 +559,6 @@ static struct ctl_table lnet_table[] = { .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, @@ -904,20 +571,6 @@ static struct ctl_table lnet_table[] = { .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, @@ -943,31 +596,167 @@ static struct ctl_table lnet_table[] = { } }; -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");