X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fobdclass%2Flinux%2Flinux-sysctl.c;h=0c19fa9706233b384db523b0635739d497a43d7d;hb=1cd2189806c82c31256c5ef9756d1dbf97784844;hp=bbb4769c081190c47f1bf6c4d983a08959eddb03;hpb=113303973ec9f8484eb2355a1a6ef3c4c7fd6a56;p=fs%2Flustre-release.git diff --git a/lustre/obdclass/linux/linux-sysctl.c b/lustre/obdclass/linux/linux-sysctl.c index bbb4769..0c19fa9 100644 --- a/lustre/obdclass/linux/linux-sysctl.c +++ b/lustre/obdclass/linux/linux-sysctl.c @@ -1,120 +1,320 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2001, 2002 Cluster File Systems, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of the Lustre file system, http://www.lustre.org - * Lustre is a trademark of Cluster File Systems, Inc. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. * - * You may have signed or agreed to another license before downloading - * this software. If so, you are bound by the terms and conditions - * of that agreement, and the following does not apply to you. See the - * LICENSE file included with this distribution for more information. + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). * - * If you did not agree to a different license, then this copy of Lustre - * is open source software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * - * In either case, Lustre is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * license text for more details. + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. * + * GPL HEADER END + */ +/* + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2015, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #include -#include #include #include #include #include #include -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) -#include -#endif #include #include #include #include #include -#include #include #include #define DEBUG_SUBSYSTEM S_CLASS #include +#include +#include -struct ctl_table_header *obd_table_header = NULL; - -#define OBD_SYSCTL 300 - -enum { - OBD_FAIL_LOC = 1, /* control test failures instrumentation */ - OBD_TIMEOUT, /* RPC timeout before recovery/intr */ - OBD_DUMP_ON_TIMEOUT, /* dump kernel debug log upon eviction */ - OBD_MEMUSED, /* bytes currently OBD_ALLOCated */ - OBD_SYNCFILTER, /* XXX temporary, as we play with sync osts.. */ - OBD_LDLM_TIMEOUT, /* LDLM timeout for ASTs before client eviction */ - OBD_DUMP_ON_EVICTION, /* dump kernel debug log upon eviction */ -}; +#ifdef CONFIG_SYSCTL +static struct ctl_table_header *obd_table_header; +#endif -int LL_PROC_PROTO(proc_fail_loc) +static int +proc_set_timeout(struct ctl_table *table, int write, void __user *buffer, + size_t *lenp, loff_t *ppos) { int rc; - int old_fail_loc = obd_fail_loc; - rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos); - if (old_fail_loc != obd_fail_loc) - wake_up(&obd_race_waitq); + rc = proc_dointvec(table, write, buffer, lenp, ppos); + if (ldlm_timeout >= obd_timeout) + ldlm_timeout = max(obd_timeout / 3, 1U); return rc; } -int LL_PROC_PROTO(proc_set_timeout) +static int +proc_memory_alloc(struct ctl_table *table, int write, void __user *buffer, + size_t *lenp, loff_t *ppos) { - int rc; + char buf[22]; + int len; - rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos); - if (ldlm_timeout >= obd_timeout) - ldlm_timeout = max(obd_timeout / 3, 1U); - return rc; + if (!*lenp || (*ppos && !write)) { + *lenp = 0; + return 0; + } + if (write) + return -EINVAL; + + len = snprintf(buf, sizeof(buf), LPU64"\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; } -static ctl_table obd_table[] = { - {OBD_FAIL_LOC, "fail_loc", &obd_fail_loc, sizeof(int), 0644, NULL, - &proc_fail_loc}, - {OBD_TIMEOUT, "timeout", &obd_timeout, sizeof(int), 0644, NULL, - &proc_set_timeout}, - {OBD_DUMP_ON_TIMEOUT, "dump_on_timeout", &obd_dump_on_timeout, - sizeof(int), 0644, NULL, &proc_dointvec}, - {OBD_DUMP_ON_EVICTION, "dump_on_eviction", &obd_dump_on_eviction, - sizeof(int), 0644, NULL, &proc_dointvec}, - {OBD_MEMUSED, "memused", (int *)&obd_memory.counter, - sizeof(int), 0644, NULL, &proc_dointvec}, - {OBD_LDLM_TIMEOUT, "ldlm_timeout", &ldlm_timeout, sizeof(int), 0644, - NULL, &proc_set_timeout}, - { 0 } +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; + + if (!*lenp || (*ppos && !write)) { + *lenp = 0; + return 0; + } + if (write) + return -EINVAL; + + len = snprintf(buf, sizeof(buf), LPU64"\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 int +proc_max_dirty_pages_in_mb(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + __s64 val; + int rc = 0; + + if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) { + *lenp = 0; + return 0; + } + if (write) { + rc = lprocfs_str_with_units_to_s64(buffer, *lenp, &val, 'M'); + if (rc) + return rc; + + if (val < 0) + return -ERANGE; + + val >>= PAGE_CACHE_SHIFT; + + /* Don't allow them to let dirty pages exceed 90% of system + * memory and set a hard minimum of 4MB. */ + if (val > ((totalram_pages / 10) * 9)) { + CERROR("Refusing to set max dirty pages to "LPD64", " + "which is more than 90%% of available RAM; " + "setting to %lu\n", val, + ((totalram_pages / 10) * 9)); + obd_max_dirty_pages = ((totalram_pages / 10) * 9); + } else if (val < 4 << (20 - PAGE_CACHE_SHIFT)) { + obd_max_dirty_pages = 4 << (20 - PAGE_CACHE_SHIFT); + } else { + obd_max_dirty_pages = val; + } + } else { + char buf[21]; + int len; + + len = lprocfs_read_frac_helper(buf, sizeof(buf), + *(unsigned long *)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; + } + *ppos += *lenp; + return rc; +} + +#ifdef CONFIG_SYSCTL +static struct ctl_table obd_table[] = { + { + INIT_CTL_NAME + .procname = "timeout", + .data = &obd_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_set_timeout + }, + { + INIT_CTL_NAME + .procname = "debug_peer_on_timeout", + .data = &obd_debug_peer_on_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "dump_on_timeout", + .data = &obd_dump_on_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "dump_on_eviction", + .data = &obd_dump_on_eviction, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "memused", + .data = NULL, + .maxlen = 0, + .mode = 0444, + .proc_handler = &proc_memory_alloc + }, + { + INIT_CTL_NAME + .procname = "memused_max", + .data = NULL, + .maxlen = 0, + .mode = 0444, + .proc_handler = &proc_mem_max + }, + { + INIT_CTL_NAME + .procname = "ldlm_timeout", + .data = &ldlm_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_set_timeout + }, + { + INIT_CTL_NAME + .procname = "max_dirty_mb", + .data = &obd_max_dirty_pages, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_max_dirty_pages_in_mb + }, + { + INIT_CTL_NAME + .procname = "bulk_timeout", + .data = &bulk_timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "at_min", + .data = &at_min, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "at_max", + .data = &at_max, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "at_extra", + .data = &at_extra, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "at_early_margin", + .data = &at_early_margin, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + INIT_CTL_NAME + .procname = "at_history", + .data = &at_history, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { 0 } }; -static ctl_table parent_table[] = { - {OBD_SYSCTL, "lustre", NULL, 0, 0555, obd_table}, - {0} +static struct ctl_table parent_table[] = { + { + INIT_CTL_NAME + .procname = "lustre", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = obd_table + }, + { 0 } }; +#endif void obd_sysctl_init (void) { #ifdef CONFIG_SYSCTL - if ( !obd_table_header ) - obd_table_header = register_sysctl_table(parent_table, 0); + if ( !obd_table_header ) + obd_table_header = register_sysctl_table(parent_table); #endif } void obd_sysctl_clean (void) { #ifdef CONFIG_SYSCTL - if ( obd_table_header ) - unregister_sysctl_table(obd_table_header); - obd_table_header = NULL; + if ( obd_table_header ) + unregister_sysctl_table(obd_table_header); + obd_table_header = NULL; #endif }