/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * 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. * * 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). * * 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 * * 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) 2002, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2012, Whamcloud, Inc. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_LLITE #include #include #include #include #include #include "llite_internal.h" struct proc_dir_entry *proc_lustre_fs_root; #ifdef LPROCFS /* /proc/lustre/llite mount point registration */ extern struct file_operations vvp_dump_pgcache_file_ops; struct file_operations ll_rw_extents_stats_fops; struct file_operations ll_rw_extents_stats_pp_fops; struct file_operations ll_rw_offset_stats_fops; static int ll_rd_blksize(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { *eof = 1; rc = snprintf(page, count, "%u\n", osfs.os_bsize); } return rc; } static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { __u32 blk_size = osfs.os_bsize >> 10; __u64 result = osfs.os_blocks; while (blk_size >>= 1) result <<= 1; *eof = 1; rc = snprintf(page, count, LPU64"\n", result); } return rc; } static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { __u32 blk_size = osfs.os_bsize >> 10; __u64 result = osfs.os_bfree; while (blk_size >>= 1) result <<= 1; *eof = 1; rc = snprintf(page, count, LPU64"\n", result); } return rc; } static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { __u32 blk_size = osfs.os_bsize >> 10; __u64 result = osfs.os_bavail; while (blk_size >>= 1) result <<= 1; *eof = 1; rc = snprintf(page, count, LPU64"\n", result); } return rc; } static int ll_rd_filestotal(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { *eof = 1; rc = snprintf(page, count, LPU64"\n", osfs.os_files); } return rc; } static int ll_rd_filesfree(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; struct obd_statfs osfs; int rc; LASSERT(sb != NULL); rc = ll_statfs_internal(sb, &osfs, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), OBD_STATFS_NODELAY); if (!rc) { *eof = 1; rc = snprintf(page, count, LPU64"\n", osfs.os_ffree); } return rc; } static int ll_rd_client_type(char *page, char **start, off_t off, int count, int *eof, void *data) { struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)data); int rc; LASSERT(sbi != NULL); *eof = 1; if (sbi->ll_flags & LL_SBI_RMT_CLIENT) rc = snprintf(page, count, "remote client\n"); else rc = snprintf(page, count, "local client\n"); return rc; } static int ll_rd_fstype(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block*)data; LASSERT(sb != NULL); *eof = 1; return snprintf(page, count, "%s\n", sb->s_type->name); } static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = (struct super_block *)data; LASSERT(sb != NULL); *eof = 1; return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid); } static int ll_rd_site_stats(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; /* * See description of statistical counters in struct cl_site, and * struct lu_site. */ return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), page, count); } static int ll_rd_max_readahead_mb(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); long pages_number; int mult; cfs_spin_lock(&sbi->ll_lock); pages_number = sbi->ll_ra_info.ra_max_pages; cfs_spin_unlock(&sbi->ll_lock); mult = 1 << (20 - PAGE_CACHE_SHIFT); return lprocfs_read_frac_helper(page, count, pages_number, mult); } static int ll_wr_max_readahead_mb(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int mult, rc, pages_number; mult = 1 << (20 - CFS_PAGE_SHIFT); rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); if (rc) return rc; if (pages_number < 0 || pages_number > cfs_num_physpages / 2) { CERROR("can't set file readahead more than %lu MB\n", cfs_num_physpages >> (20 - CFS_PAGE_SHIFT + 1)); /*1/2 of RAM*/ return -ERANGE; } cfs_spin_lock(&sbi->ll_lock); sbi->ll_ra_info.ra_max_pages = pages_number; cfs_spin_unlock(&sbi->ll_lock); return count; } static int ll_rd_max_readahead_per_file_mb(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); long pages_number; int mult; cfs_spin_lock(&sbi->ll_lock); pages_number = sbi->ll_ra_info.ra_max_pages_per_file; cfs_spin_unlock(&sbi->ll_lock); mult = 1 << (20 - CFS_PAGE_SHIFT); return lprocfs_read_frac_helper(page, count, pages_number, mult); } static int ll_wr_max_readahead_per_file_mb(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int mult, rc, pages_number; mult = 1 << (20 - CFS_PAGE_SHIFT); rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); if (rc) return rc; if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) { CERROR("can't set file readahead more than" "max_read_ahead_mb %lu MB\n", sbi->ll_ra_info.ra_max_pages); return -ERANGE; } cfs_spin_lock(&sbi->ll_lock); sbi->ll_ra_info.ra_max_pages_per_file = pages_number; cfs_spin_unlock(&sbi->ll_lock); return count; } static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); long pages_number; int mult; cfs_spin_lock(&sbi->ll_lock); pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages; cfs_spin_unlock(&sbi->ll_lock); mult = 1 << (20 - CFS_PAGE_SHIFT); return lprocfs_read_frac_helper(page, count, pages_number, mult); } static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int mult, rc, pages_number; mult = 1 << (20 - CFS_PAGE_SHIFT); rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); if (rc) return rc; /* Cap this at the current max readahead window size, the readahead * algorithm does this anyway so it's pointless to set it larger. */ if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages_per_file) { CERROR("can't set max_read_ahead_whole_mb more than " "max_read_ahead_per_file_mb: %lu\n", sbi->ll_ra_info.ra_max_pages_per_file >> (20 - CFS_PAGE_SHIFT)); return -ERANGE; } cfs_spin_lock(&sbi->ll_lock); sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number; cfs_spin_unlock(&sbi->ll_lock); return count; } static int ll_rd_max_cached_mb(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); struct cl_client_lru *lru = &sbi->ll_lru; int shift = 20 - CFS_PAGE_SHIFT; int max_cached_mb; int unused_mb; *eof = 1; max_cached_mb = lru->ccl_page_max >> shift; unused_mb = cfs_atomic_read(&lru->ccl_page_left) >> shift; return snprintf(page, count, "users: %d\n" "max_cached_mb: %d\n" "used_mb: %d\n" "unused_mb: %d\n" "reclaim_count: %u\n", cfs_atomic_read(&lru->ccl_users), max_cached_mb, max_cached_mb - unused_mb, unused_mb, lru->ccl_reclaim_count); } static int ll_wr_max_cached_mb(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); struct cl_client_lru *lru = &sbi->ll_lru; int mult, rc, pages_number; int diff = 0; int nrpages = 0; ENTRY; mult = 1 << (20 - CFS_PAGE_SHIFT); buffer = lprocfs_find_named_value(buffer, "max_cached_mb:", &count); rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); if (rc) RETURN(rc); if (pages_number < 0 || pages_number > cfs_num_physpages) { CERROR("%s: can't set max cache more than %lu MB\n", ll_get_fsname(sb, NULL, 0), cfs_num_physpages >> (20 - CFS_PAGE_SHIFT)); RETURN(-ERANGE); } if (sbi->ll_dt_exp == NULL) RETURN(-ENODEV); cfs_spin_lock(&sbi->ll_lock); diff = pages_number - lru->ccl_page_max; cfs_spin_unlock(&sbi->ll_lock); /* easy - add more LRU slots. */ if (diff >= 0) { cfs_atomic_add(diff, &lru->ccl_page_left); GOTO(out, rc = 0); } diff = -diff; while (diff > 0) { int tmp; /* reduce LRU budget from free slots. */ do { int ov, nv; ov = cfs_atomic_read(&lru->ccl_page_left); if (ov == 0) break; nv = ov > diff ? ov - diff : 0; rc = cfs_atomic_cmpxchg(&lru->ccl_page_left, ov, nv); if (likely(ov == rc)) { diff -= ov - nv; nrpages += ov - nv; break; } } while (1); if (diff <= 0) break; /* difficult - have to ask OSCs to drop LRU slots. */ tmp = diff << 1; rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_LRU_SHRINK), KEY_LRU_SHRINK, sizeof(tmp), &tmp, NULL); if (rc < 0) break; } out: if (rc >= 0) { cfs_spin_lock(&sbi->ll_lock); lru->ccl_page_max = pages_number; cfs_spin_unlock(&sbi->ll_lock); rc = count; } else { cfs_atomic_add(nrpages, &lru->ccl_page_left); } return rc; } static int ll_rd_checksum(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); return snprintf(page, count, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0); } static int ll_wr_checksum(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int val, rc; if (!sbi->ll_dt_exp) /* Not set up yet */ return -EAGAIN; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; if (val) sbi->ll_flags |= LL_SBI_CHECKSUM; else sbi->ll_flags &= ~LL_SBI_CHECKSUM; rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM), KEY_CHECKSUM, sizeof(val), &val, NULL); if (rc) CWARN("Failed to set OSC checksum flags: %d\n", rc); return count; } static int ll_rd_max_rw_chunk(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk); } static int ll_wr_max_rw_chunk(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; int rc, val; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; ll_s2sbi(sb)->ll_max_rw_chunk = val; return count; } static int ll_rd_track_id(char *page, int count, void *data, enum stats_track_type type) { struct super_block *sb = data; if (ll_s2sbi(sb)->ll_stats_track_type == type) { return snprintf(page, count, "%d\n", ll_s2sbi(sb)->ll_stats_track_id); } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) { return snprintf(page, count, "0 (all)\n"); } else { return snprintf(page, count, "untracked\n"); } } static int ll_wr_track_id(const char *buffer, unsigned long count, void *data, enum stats_track_type type) { struct super_block *sb = data; int rc, pid; rc = lprocfs_write_helper(buffer, count, &pid); if (rc) return rc; ll_s2sbi(sb)->ll_stats_track_id = pid; if (pid == 0) ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL; else ll_s2sbi(sb)->ll_stats_track_type = type; lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats); return count; } static int ll_rd_track_pid(char *page, char **start, off_t off, int count, int *eof, void *data) { return (ll_rd_track_id(page, count, data, STATS_TRACK_PID)); } static int ll_wr_track_pid(struct file *file, const char *buffer, unsigned long count, void *data) { return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID)); } static int ll_rd_track_ppid(char *page, char **start, off_t off, int count, int *eof, void *data) { return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID)); } static int ll_wr_track_ppid(struct file *file, const char *buffer, unsigned long count, void *data) { return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID)); } static int ll_rd_track_gid(char *page, char **start, off_t off, int count, int *eof, void *data) { return (ll_rd_track_id(page, count, data, STATS_TRACK_GID)); } static int ll_wr_track_gid(struct file *file, const char *buffer, unsigned long count, void *data) { return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID)); } static int ll_rd_statahead_max(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); return snprintf(page, count, "%u\n", sbi->ll_sa_max); } static int ll_wr_statahead_max(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int val, rc; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; if (val >= 0 && val <= LL_SA_RPC_MAX) sbi->ll_sa_max = val; else CERROR("Bad statahead_max value %d. Valid values are in the " "range [0, %d]\n", val, LL_SA_RPC_MAX); return count; } static int ll_rd_statahead_agl(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); return snprintf(page, count, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0); } static int ll_wr_statahead_agl(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int val, rc; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; if (val) sbi->ll_flags |= LL_SBI_AGL_ENABLED; else sbi->ll_flags &= ~LL_SBI_AGL_ENABLED; return count; } static int ll_rd_statahead_stats(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); return snprintf(page, count, "statahead total: %u\n" "statahead wrong: %u\n" "agl total: %u\n", atomic_read(&sbi->ll_sa_total), atomic_read(&sbi->ll_sa_wrong), atomic_read(&sbi->ll_agl_total)); } static int ll_rd_lazystatfs(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); return snprintf(page, count, "%u\n", (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0); } static int ll_wr_lazystatfs(struct file *file, const char *buffer, unsigned long count, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); int val, rc; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; if (val) sbi->ll_flags |= LL_SBI_LAZYSTATFS; else sbi->ll_flags &= ~LL_SBI_LAZYSTATFS; return count; } static int ll_rd_maxea_size(char *page, char **start, off_t off, int count, int *eof, void *data) { struct super_block *sb = data; struct ll_sb_info *sbi = ll_s2sbi(sb); unsigned int ealen; int rc; rc = ll_get_max_mdsize(sbi, &ealen); if (rc) return rc; return snprintf(page, count, "%u\n", ealen); } static struct lprocfs_vars lprocfs_llite_obd_vars[] = { { "uuid", ll_rd_sb_uuid, 0, 0 }, //{ "mntpt_path", ll_rd_path, 0, 0 }, { "fstype", ll_rd_fstype, 0, 0 }, { "site", ll_rd_site_stats, 0, 0 }, { "blocksize", ll_rd_blksize, 0, 0 }, { "kbytestotal", ll_rd_kbytestotal, 0, 0 }, { "kbytesfree", ll_rd_kbytesfree, 0, 0 }, { "kbytesavail", ll_rd_kbytesavail, 0, 0 }, { "filestotal", ll_rd_filestotal, 0, 0 }, { "filesfree", ll_rd_filesfree, 0, 0 }, { "client_type", ll_rd_client_type, 0, 0 }, //{ "filegroups", lprocfs_rd_filegroups, 0, 0 }, { "max_read_ahead_mb", ll_rd_max_readahead_mb, ll_wr_max_readahead_mb, 0 }, { "max_read_ahead_per_file_mb", ll_rd_max_readahead_per_file_mb, ll_wr_max_readahead_per_file_mb, 0 }, { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb, ll_wr_max_read_ahead_whole_mb, 0 }, { "max_cached_mb", ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 }, { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 }, { "max_rw_chunk", ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 }, { "stats_track_pid", ll_rd_track_pid, ll_wr_track_pid, 0 }, { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 }, { "stats_track_gid", ll_rd_track_gid, ll_wr_track_gid, 0 }, { "statahead_max", ll_rd_statahead_max, ll_wr_statahead_max, 0 }, { "statahead_agl", ll_rd_statahead_agl, ll_wr_statahead_agl, 0 }, { "statahead_stats", ll_rd_statahead_stats, 0, 0 }, { "lazystatfs", ll_rd_lazystatfs, ll_wr_lazystatfs, 0 }, { "max_easize", ll_rd_maxea_size, 0, 0 }, { 0 } }; #define MAX_STRING_SIZE 128 struct llite_file_opcode { __u32 opcode; __u32 type; const char *opname; } llite_opcode_table[LPROC_LL_FILE_OPCODES] = { /* file operation */ { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" }, { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" }, { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, "read_bytes" }, { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, "write_bytes" }, { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, "brw_read" }, { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, "brw_write" }, { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, "osc_read" }, { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, "osc_write" }, { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" }, { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" }, { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" }, { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" }, { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" }, { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" }, { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" }, /* inode operation */ { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" }, { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" }, { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" }, { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" }, /* dir inode operation */ { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" }, { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" }, { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" }, { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" }, { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" }, { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" }, { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" }, { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" }, /* special inode operation */ { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" }, { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" }, { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" }, { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" }, { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" }, { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" }, { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" }, }; void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) { if (!sbi->ll_stats) return; if (sbi->ll_stats_track_type == STATS_TRACK_ALL) lprocfs_counter_add(sbi->ll_stats, op, count); else if (sbi->ll_stats_track_type == STATS_TRACK_PID && sbi->ll_stats_track_id == current->pid) lprocfs_counter_add(sbi->ll_stats, op, count); else if (sbi->ll_stats_track_type == STATS_TRACK_PPID && sbi->ll_stats_track_id == current->parent->pid) lprocfs_counter_add(sbi->ll_stats, op, count); else if (sbi->ll_stats_track_type == STATS_TRACK_GID && sbi->ll_stats_track_id == cfs_curproc_gid()) lprocfs_counter_add(sbi->ll_stats, op, count); } EXPORT_SYMBOL(ll_stats_ops_tally); static const char *ra_stat_string[] = { [RA_STAT_HIT] = "hits", [RA_STAT_MISS] = "misses", [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive", [RA_STAT_MISS_IN_WINDOW] = "miss inside window", [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page", [RA_STAT_FAILED_MATCH] = "failed lock match", [RA_STAT_DISCARDED] = "read but discarded", [RA_STAT_ZERO_LEN] = "zero length file", [RA_STAT_ZERO_WINDOW] = "zero size window", [RA_STAT_EOF] = "read-ahead to EOF", [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue", [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page", }; int lprocfs_register_mountpoint(struct proc_dir_entry *parent, struct super_block *sb, char *osc, char *mdc) { struct lprocfs_vars lvars[2]; struct lustre_sb_info *lsi = s2lsi(sb); struct ll_sb_info *sbi = ll_s2sbi(sb); struct obd_device *obd; char name[MAX_STRING_SIZE + 1], *ptr; int err, id, len, rc; ENTRY; memset(lvars, 0, sizeof(lvars)); name[MAX_STRING_SIZE] = '\0'; lvars[0].name = name; LASSERT(sbi != NULL); LASSERT(mdc != NULL); LASSERT(osc != NULL); /* Get fsname */ len = strlen(lsi->lsi_lmd->lmd_profile); ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-'); if (ptr && (strcmp(ptr, "-client") == 0)) len -= 7; /* Mount info */ snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len, lsi->lsi_lmd->lmd_profile, sb); sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL); if (IS_ERR(sbi->ll_proc_root)) { err = PTR_ERR(sbi->ll_proc_root); sbi->ll_proc_root = NULL; RETURN(err); } rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444, &vvp_dump_pgcache_file_ops, sbi); if (rc) CWARN("Error adding the dump_page_cache file\n"); rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644, &ll_rw_extents_stats_fops, sbi); if (rc) CWARN("Error adding the extent_stats file\n"); rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process", 0644, &ll_rw_extents_stats_pp_fops, sbi); if (rc) CWARN("Error adding the extents_stats_per_process file\n"); rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644, &ll_rw_offset_stats_fops, sbi); if (rc) CWARN("Error adding the offset_stats file\n"); /* File operations stats */ sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES, LPROCFS_STATS_FLAG_NONE); if (sbi->ll_stats == NULL) GOTO(out, err = -ENOMEM); /* do counter init */ for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) { __u32 type = llite_opcode_table[id].type; void *ptr = NULL; if (type & LPROCFS_TYPE_REGS) ptr = "regs"; else if (type & LPROCFS_TYPE_BYTES) ptr = "bytes"; else if (type & LPROCFS_TYPE_PAGES) ptr = "pages"; lprocfs_counter_init(sbi->ll_stats, llite_opcode_table[id].opcode, (type & LPROCFS_CNTR_AVGMINMAX), llite_opcode_table[id].opname, ptr); } err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats); if (err) GOTO(out, err); sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string), LPROCFS_STATS_FLAG_NONE); if (sbi->ll_ra_stats == NULL) GOTO(out, err = -ENOMEM); for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++) lprocfs_counter_init(sbi->ll_ra_stats, id, 0, ra_stat_string[id], "pages"); err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats", sbi->ll_ra_stats); if (err) GOTO(out, err); err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb); if (err) GOTO(out, err); /* MDC info */ obd = class_name2obd(mdc); LASSERT(obd != NULL); LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); LASSERT(obd->obd_type->typ_name != NULL); snprintf(name, MAX_STRING_SIZE, "%s/common_name", obd->obd_type->typ_name); lvars[0].read_fptr = lprocfs_rd_name; err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); if (err) GOTO(out, err); snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name); lvars[0].read_fptr = lprocfs_rd_uuid; err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); if (err) GOTO(out, err); /* OSC */ obd = class_name2obd(osc); LASSERT(obd != NULL); LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); LASSERT(obd->obd_type->typ_name != NULL); snprintf(name, MAX_STRING_SIZE, "%s/common_name", obd->obd_type->typ_name); lvars[0].read_fptr = lprocfs_rd_name; err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); if (err) GOTO(out, err); snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name); lvars[0].read_fptr = lprocfs_rd_uuid; err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); out: if (err) { lprocfs_remove(&sbi->ll_proc_root); lprocfs_free_stats(&sbi->ll_ra_stats); lprocfs_free_stats(&sbi->ll_stats); } RETURN(err); } void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) { if (sbi->ll_proc_root) { lprocfs_remove(&sbi->ll_proc_root); lprocfs_free_stats(&sbi->ll_ra_stats); lprocfs_free_stats(&sbi->ll_stats); } } #undef MAX_STRING_SIZE #define pct(a,b) (b ? a * 100 / b : 0) static void ll_display_extents_info(struct ll_rw_extents_info *io_extents, struct seq_file *seq, int which) { unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum; unsigned long start, end, r, w; char *unitp = "KMGTPEZY"; int i, units = 10; struct per_process_info *pp_info = &io_extents->pp_extents[which]; read_cum = 0; write_cum = 0; start = 0; for(i = 0; i < LL_HIST_MAX; i++) { read_tot += pp_info->pp_r_hist.oh_buckets[i]; write_tot += pp_info->pp_w_hist.oh_buckets[i]; } for(i = 0; i < LL_HIST_MAX; i++) { r = pp_info->pp_r_hist.oh_buckets[i]; w = pp_info->pp_w_hist.oh_buckets[i]; read_cum += r; write_cum += w; end = 1 << (i + LL_HIST_START - units); seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | " "%14lu %4lu %4lu\n", start, *unitp, end, *unitp, (i == LL_HIST_MAX - 1) ? '+' : ' ', r, pct(r, read_tot), pct(read_cum, read_tot), w, pct(w, write_tot), pct(write_cum, write_tot)); start = end; if (start == 1<<10) { start = 1; units += 10; unitp++; } if (read_cum == read_tot && write_cum == write_tot) break; } } static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v) { struct timeval now; struct ll_sb_info *sbi = seq->private; struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; int k; cfs_gettimeofday(&now); if (!sbi->ll_rw_stats_on) { seq_printf(seq, "disabled\n" "write anything in this file to activate, " "then 0 or \"[D/d]isabled\" to deactivate\n"); return 0; } seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", now.tv_sec, now.tv_usec); seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write"); seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n", "extents", "calls", "%", "cum%", "calls", "%", "cum%"); cfs_spin_lock(&sbi->ll_pp_extent_lock); for(k = 0; k < LL_PROCESS_HIST_MAX; k++) { if(io_extents->pp_extents[k].pid != 0) { seq_printf(seq, "\nPID: %d\n", io_extents->pp_extents[k].pid); ll_display_extents_info(io_extents, seq, k); } } cfs_spin_unlock(&sbi->ll_pp_extent_lock); return 0; } static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file, const char *buf, size_t len, loff_t *off) { struct seq_file *seq = file->private_data; struct ll_sb_info *sbi = seq->private; struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; int i; int value = 1, rc = 0; rc = lprocfs_write_helper(buf, len, &value); if (rc < 0 && (strcmp(buf, "disabled") == 0 || strcmp(buf, "Disabled") == 0)) value = 0; if (value == 0) sbi->ll_rw_stats_on = 0; else sbi->ll_rw_stats_on = 1; cfs_spin_lock(&sbi->ll_pp_extent_lock); for(i = 0; i < LL_PROCESS_HIST_MAX; i++) { io_extents->pp_extents[i].pid = 0; lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist); lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist); } cfs_spin_unlock(&sbi->ll_pp_extent_lock); return len; } LPROC_SEQ_FOPS(ll_rw_extents_stats_pp); static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v) { struct timeval now; struct ll_sb_info *sbi = seq->private; struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; cfs_gettimeofday(&now); if (!sbi->ll_rw_stats_on) { seq_printf(seq, "disabled\n" "write anything in this file to activate, " "then 0 or \"[D/d]isabled\" to deactivate\n"); return 0; } seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", now.tv_sec, now.tv_usec); seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write"); seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n", "extents", "calls", "%", "cum%", "calls", "%", "cum%"); cfs_spin_lock(&sbi->ll_lock); ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX); cfs_spin_unlock(&sbi->ll_lock); return 0; } static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf, size_t len, loff_t *off) { struct seq_file *seq = file->private_data; struct ll_sb_info *sbi = seq->private; struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; int i; int value = 1, rc = 0; rc = lprocfs_write_helper(buf, len, &value); if (rc < 0 && (strcmp(buf, "disabled") == 0 || strcmp(buf, "Disabled") == 0)) value = 0; if (value == 0) sbi->ll_rw_stats_on = 0; else sbi->ll_rw_stats_on = 1; cfs_spin_lock(&sbi->ll_pp_extent_lock); for(i = 0; i <= LL_PROCESS_HIST_MAX; i++) { io_extents->pp_extents[i].pid = 0; lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist); lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist); } cfs_spin_unlock(&sbi->ll_pp_extent_lock); return len; } LPROC_SEQ_FOPS(ll_rw_extents_stats); void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct ll_file_data *file, loff_t pos, size_t count, int rw) { int i, cur = -1; struct ll_rw_process_info *process; struct ll_rw_process_info *offset; int *off_count = &sbi->ll_rw_offset_entry_count; int *process_count = &sbi->ll_offset_process_count; struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; if(!sbi->ll_rw_stats_on) return; process = sbi->ll_rw_process_info; offset = sbi->ll_rw_offset_info; cfs_spin_lock(&sbi->ll_pp_extent_lock); /* Extent statistics */ for(i = 0; i < LL_PROCESS_HIST_MAX; i++) { if(io_extents->pp_extents[i].pid == pid) { cur = i; break; } } if (cur == -1) { /* new process */ sbi->ll_extent_process_count = (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX; cur = sbi->ll_extent_process_count; io_extents->pp_extents[cur].pid = pid; lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist); lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist); } for(i = 0; (count >= (1 << LL_HIST_START << i)) && (i < (LL_HIST_MAX - 1)); i++); if (rw == 0) { io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++; io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++; } else { io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++; io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++; } cfs_spin_unlock(&sbi->ll_pp_extent_lock); cfs_spin_lock(&sbi->ll_process_lock); /* Offset statistics */ for (i = 0; i < LL_PROCESS_HIST_MAX; i++) { if (process[i].rw_pid == pid) { if (process[i].rw_last_file != file) { process[i].rw_range_start = pos; process[i].rw_last_file_pos = pos + count; process[i].rw_smallest_extent = count; process[i].rw_largest_extent = count; process[i].rw_offset = 0; process[i].rw_last_file = file; cfs_spin_unlock(&sbi->ll_process_lock); return; } if (process[i].rw_last_file_pos != pos) { *off_count = (*off_count + 1) % LL_OFFSET_HIST_MAX; offset[*off_count].rw_op = process[i].rw_op; offset[*off_count].rw_pid = pid; offset[*off_count].rw_range_start = process[i].rw_range_start; offset[*off_count].rw_range_end = process[i].rw_last_file_pos; offset[*off_count].rw_smallest_extent = process[i].rw_smallest_extent; offset[*off_count].rw_largest_extent = process[i].rw_largest_extent; offset[*off_count].rw_offset = process[i].rw_offset; process[i].rw_op = rw; process[i].rw_range_start = pos; process[i].rw_smallest_extent = count; process[i].rw_largest_extent = count; process[i].rw_offset = pos - process[i].rw_last_file_pos; } if(process[i].rw_smallest_extent > count) process[i].rw_smallest_extent = count; if(process[i].rw_largest_extent < count) process[i].rw_largest_extent = count; process[i].rw_last_file_pos = pos + count; cfs_spin_unlock(&sbi->ll_process_lock); return; } } *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX; process[*process_count].rw_pid = pid; process[*process_count].rw_op = rw; process[*process_count].rw_range_start = pos; process[*process_count].rw_last_file_pos = pos + count; process[*process_count].rw_smallest_extent = count; process[*process_count].rw_largest_extent = count; process[*process_count].rw_offset = 0; process[*process_count].rw_last_file = file; cfs_spin_unlock(&sbi->ll_process_lock); } static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v) { struct timeval now; struct ll_sb_info *sbi = seq->private; struct ll_rw_process_info *offset = sbi->ll_rw_offset_info; struct ll_rw_process_info *process = sbi->ll_rw_process_info; int i; cfs_gettimeofday(&now); if (!sbi->ll_rw_stats_on) { seq_printf(seq, "disabled\n" "write anything in this file to activate, " "then 0 or \"[D/d]isabled\" to deactivate\n"); return 0; } cfs_spin_lock(&sbi->ll_process_lock); seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", now.tv_sec, now.tv_usec); seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n", "R/W", "PID", "RANGE START", "RANGE END", "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET"); /* We stored the discontiguous offsets here; print them first */ for(i = 0; i < LL_OFFSET_HIST_MAX; i++) { if (offset[i].rw_pid != 0) seq_printf(seq,"%3c %10d %14Lu %14Lu %17lu %17lu %14Lu", offset[i].rw_op ? 'W' : 'R', offset[i].rw_pid, offset[i].rw_range_start, offset[i].rw_range_end, (unsigned long)offset[i].rw_smallest_extent, (unsigned long)offset[i].rw_largest_extent, offset[i].rw_offset); } /* Then print the current offsets for each process */ for(i = 0; i < LL_PROCESS_HIST_MAX; i++) { if (process[i].rw_pid != 0) seq_printf(seq,"%3c %10d %14Lu %14Lu %17lu %17lu %14Lu", process[i].rw_op ? 'W' : 'R', process[i].rw_pid, process[i].rw_range_start, process[i].rw_last_file_pos, (unsigned long)process[i].rw_smallest_extent, (unsigned long)process[i].rw_largest_extent, process[i].rw_offset); } cfs_spin_unlock(&sbi->ll_process_lock); return 0; } static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf, size_t len, loff_t *off) { struct seq_file *seq = file->private_data; struct ll_sb_info *sbi = seq->private; struct ll_rw_process_info *process_info = sbi->ll_rw_process_info; struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info; int value = 1, rc = 0; rc = lprocfs_write_helper(buf, len, &value); if (rc < 0 && (strcmp(buf, "disabled") == 0 || strcmp(buf, "Disabled") == 0)) value = 0; if (value == 0) sbi->ll_rw_stats_on = 0; else sbi->ll_rw_stats_on = 1; cfs_spin_lock(&sbi->ll_process_lock); sbi->ll_offset_process_count = 0; sbi->ll_rw_offset_entry_count = 0; memset(process_info, 0, sizeof(struct ll_rw_process_info) * LL_PROCESS_HIST_MAX); memset(offset_info, 0, sizeof(struct ll_rw_process_info) * LL_OFFSET_HIST_MAX); cfs_spin_unlock(&sbi->ll_process_lock); return len; } LPROC_SEQ_FOPS(ll_rw_offset_stats); void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars) { lvars->module_vars = NULL; lvars->obd_vars = lprocfs_llite_obd_vars; } #endif /* LPROCFS */