^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) ** Copyright (C) 2005-2009 Red Hat, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "dlm_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "lock.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define DLM_DEBUG_BUF_LEN 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static char debug_buf[DLM_DEBUG_BUF_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static struct mutex debug_buf_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct dentry *dlm_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static char *print_lockmode(int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) switch (mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) case DLM_LOCK_IV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return "--";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) case DLM_LOCK_NL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return "NL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) case DLM_LOCK_CR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return "CR";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) case DLM_LOCK_CW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return "CW";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) case DLM_LOCK_PR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return "PR";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) case DLM_LOCK_PW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return "PW";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) case DLM_LOCK_EX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return "EX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return "??";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct dlm_rsb *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (lkb->lkb_status == DLM_LKSTS_CONVERT ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) lkb->lkb_status == DLM_LKSTS_WAITING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) seq_printf(s, " (%s)", print_lockmode(lkb->lkb_rqmode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (lkb->lkb_nodeid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (lkb->lkb_nodeid != res->res_nodeid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) seq_printf(s, " Remote: %3d %08x", lkb->lkb_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) lkb->lkb_remid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) seq_printf(s, " Master: %08x", lkb->lkb_remid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (lkb->lkb_wait_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void print_format1(struct dlm_rsb *res, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct dlm_lkb *lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) lock_rsb(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) seq_printf(s, "\nResource %p Name (len=%d) \"", res, res->res_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) for (i = 0; i < res->res_length; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (isprint(res->res_name[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) seq_printf(s, "%c", res->res_name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) seq_printf(s, "%c", '.');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (res->res_nodeid > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) seq_printf(s, "\"\nLocal Copy, Master is node %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) res->res_nodeid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) else if (res->res_nodeid == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) seq_puts(s, "\"\nMaster Copy\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) else if (res->res_nodeid == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) seq_printf(s, "\"\nLooking up master (lkid %x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) res->res_first_lkid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) seq_printf(s, "\"\nInvalid master %d\n", res->res_nodeid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* Print the LVB: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (res->res_lvbptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) seq_puts(s, "LVB: ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) for (i = 0; i < lvblen; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (i == lvblen / 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) seq_puts(s, "\n ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) seq_printf(s, "%02x ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) (unsigned char) res->res_lvbptr[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (rsb_flag(res, RSB_VALNOTVALID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) seq_puts(s, " (INVALID)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) root_list = !list_empty(&res->res_root_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) recover_list = !list_empty(&res->res_recover_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (root_list || recover_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) seq_printf(s, "Recovery: root %d recover %d flags %lx count %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) root_list, recover_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) res->res_flags, res->res_recover_locks_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* Print the locks attached to this resource */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) seq_puts(s, "Granted Queue\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) print_format1_lock(s, lkb, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) seq_puts(s, "Conversion Queue\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) print_format1_lock(s, lkb, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) seq_puts(s, "Waiting Queue\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) print_format1_lock(s, lkb, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (list_empty(&res->res_lookup))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) seq_puts(s, "Lookup Queue\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) list_for_each_entry(lkb, &res->res_lookup, lkb_rsb_lookup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) seq_printf(s, "%08x %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) lkb->lkb_id, print_lockmode(lkb->lkb_rqmode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (lkb->lkb_wait_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) unlock_rsb(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static void print_format2_lock(struct seq_file *s, struct dlm_lkb *lkb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct dlm_rsb *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) u64 xid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) u64 us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (lkb->lkb_flags & DLM_IFL_USER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (lkb->lkb_ua)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) xid = lkb->lkb_ua->xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /* microseconds since lkb was added to current queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) us = ktime_to_us(ktime_sub(ktime_get(), lkb->lkb_timestamp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* id nodeid remid pid xid exflags flags sts grmode rqmode time_us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) r_nodeid r_len r_name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %llu %u %d \"%s\"\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) lkb->lkb_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) lkb->lkb_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) lkb->lkb_remid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) lkb->lkb_ownpid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) (unsigned long long)xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) lkb->lkb_exflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) lkb->lkb_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) lkb->lkb_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) lkb->lkb_grmode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) lkb->lkb_rqmode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) (unsigned long long)us,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) r->res_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) r->res_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) r->res_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static void print_format2(struct dlm_rsb *r, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct dlm_lkb *lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) lock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) print_format2_lock(s, lkb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) print_format2_lock(s, lkb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) print_format2_lock(s, lkb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) unlock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static void print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int rsb_lookup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) u64 xid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (lkb->lkb_flags & DLM_IFL_USER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (lkb->lkb_ua)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) xid = lkb->lkb_ua->xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) seq_printf(s, "lkb %x %d %x %u %llu %x %x %d %d %d %d %d %d %u %llu %llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) lkb->lkb_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) lkb->lkb_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) lkb->lkb_remid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) lkb->lkb_ownpid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) (unsigned long long)xid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) lkb->lkb_exflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) lkb->lkb_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) lkb->lkb_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) lkb->lkb_grmode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) lkb->lkb_rqmode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) lkb->lkb_last_bast.mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) rsb_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) lkb->lkb_wait_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) lkb->lkb_lvbseq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) (unsigned long long)ktime_to_ns(lkb->lkb_timestamp),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) (unsigned long long)ktime_to_ns(lkb->lkb_last_bast_time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static void print_format3(struct dlm_rsb *r, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct dlm_lkb *lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int i, lvblen = r->res_ls->ls_lvblen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int print_name = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) lock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) seq_printf(s, "rsb %p %d %x %lx %d %d %u %d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) r->res_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) r->res_first_lkid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) r->res_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) !list_empty(&r->res_root_list),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) !list_empty(&r->res_recover_list),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) r->res_recover_locks_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) r->res_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) for (i = 0; i < r->res_length; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) print_name = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) seq_puts(s, print_name ? "str " : "hex");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) for (i = 0; i < r->res_length; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (print_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) seq_printf(s, "%c", r->res_name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!r->res_lvbptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) goto do_locks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) seq_printf(s, "lvb %u %d", r->res_lvbseq, lvblen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) for (i = 0; i < lvblen; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) do_locks:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) print_format3_lock(s, lkb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) print_format3_lock(s, lkb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) print_format3_lock(s, lkb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) list_for_each_entry(lkb, &r->res_lookup, lkb_rsb_lookup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) print_format3_lock(s, lkb, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (seq_has_overflowed(s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) unlock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static void print_format4(struct dlm_rsb *r, struct seq_file *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int our_nodeid = dlm_our_nodeid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) int print_name = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) lock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) seq_printf(s, "rsb %p %d %d %d %d %lu %lx %d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) r->res_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) r->res_master_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) r->res_dir_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) our_nodeid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) r->res_toss_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) r->res_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) r->res_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) for (i = 0; i < r->res_length; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) print_name = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) seq_puts(s, print_name ? "str " : "hex");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) for (i = 0; i < r->res_length; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (print_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) seq_printf(s, "%c", r->res_name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) unlock_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct rsbtbl_iter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct dlm_rsb *rsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) unsigned bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) int format;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) int header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * If the buffer is full, seq_printf can be called again, but it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * does nothing. So, the these printing routines periodically check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * seq_has_overflowed to avoid wasting too much time trying to print to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * a full buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int table_seq_show(struct seq_file *seq, void *iter_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct rsbtbl_iter *ri = iter_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) switch (ri->format) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) print_format1(ri->rsb, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (ri->header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) seq_puts(seq, "id nodeid remid pid xid exflags flags sts grmode rqmode time_ms r_nodeid r_len r_name\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ri->header = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) print_format2(ri->rsb, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (ri->header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) seq_puts(seq, "version rsb 1.1 lvb 1.1 lkb 1.1\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ri->header = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) print_format3(ri->rsb, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (ri->header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) seq_puts(seq, "version 4 rsb 2\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ri->header = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) print_format4(ri->rsb, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static const struct seq_operations format1_seq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static const struct seq_operations format2_seq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static const struct seq_operations format3_seq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) static const struct seq_operations format4_seq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static void *table_seq_start(struct seq_file *seq, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) struct rb_root *tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct dlm_ls *ls = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct rsbtbl_iter *ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct dlm_rsb *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) loff_t n = *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) unsigned bucket, entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int toss = (seq->op == &format4_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bucket = n >> 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) entry = n & ((1LL << 32) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (bucket >= ls->ls_rsbtbl_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) ri = kzalloc(sizeof(*ri), GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!ri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (n == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) ri->header = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (seq->op == &format1_seq_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ri->format = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (seq->op == &format2_seq_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) ri->format = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (seq->op == &format3_seq_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) ri->format = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (seq->op == &format4_seq_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ri->format = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) spin_lock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (!RB_EMPTY_ROOT(tree)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) for (node = rb_first(tree); node; node = rb_next(node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) r = rb_entry(node, struct dlm_rsb, res_hashnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (!entry--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) dlm_hold_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) ri->rsb = r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) ri->bucket = bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * move to the first rsb in the next non-empty bucket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /* zero the entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) n &= ~((1LL << 32) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) bucket++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) n += 1LL << 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (bucket >= ls->ls_rsbtbl_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) kfree(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) spin_lock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (!RB_EMPTY_ROOT(tree)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) node = rb_first(tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) r = rb_entry(node, struct dlm_rsb, res_hashnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) dlm_hold_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ri->rsb = r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ri->bucket = bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) *pos = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct dlm_ls *ls = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct rsbtbl_iter *ri = iter_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct rb_root *tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct rb_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct dlm_rsb *r, *rp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) loff_t n = *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) unsigned bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) int toss = (seq->op == &format4_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) bucket = n >> 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) * move to the next rsb in the same bucket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) spin_lock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) rp = ri->rsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) next = rb_next(&rp->res_hashnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) r = rb_entry(next, struct dlm_rsb, res_hashnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) dlm_hold_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) ri->rsb = r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) dlm_put_rsb(rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) ++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) dlm_put_rsb(rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * move to the first rsb in the next non-empty bucket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) /* zero the entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) n &= ~((1LL << 32) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) bucket++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) n += 1LL << 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (bucket >= ls->ls_rsbtbl_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) kfree(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) ++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) spin_lock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (!RB_EMPTY_ROOT(tree)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) next = rb_first(tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) r = rb_entry(next, struct dlm_rsb, res_hashnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) dlm_hold_rsb(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) ri->rsb = r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) ri->bucket = bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) *pos = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) return ri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) static void table_seq_stop(struct seq_file *seq, void *iter_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) struct rsbtbl_iter *ri = iter_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (ri) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) dlm_put_rsb(ri->rsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) kfree(ri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) static const struct seq_operations format1_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) .start = table_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) .next = table_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) .stop = table_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) .show = table_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static const struct seq_operations format2_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) .start = table_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) .next = table_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) .stop = table_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) .show = table_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) static const struct seq_operations format3_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) .start = table_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) .next = table_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) .stop = table_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) .show = table_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static const struct seq_operations format4_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) .start = table_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) .next = table_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) .stop = table_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) .show = table_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) static const struct file_operations format1_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) static const struct file_operations format2_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) static const struct file_operations format3_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) static const struct file_operations format4_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) static int table_open1(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct seq_file *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) ret = seq_open(file, &format1_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) seq = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) seq->private = inode->i_private; /* the dlm_ls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) static int table_open2(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct seq_file *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) ret = seq_open(file, &format2_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) seq = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) seq->private = inode->i_private; /* the dlm_ls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) static int table_open3(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) struct seq_file *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ret = seq_open(file, &format3_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) seq = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) seq->private = inode->i_private; /* the dlm_ls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) static int table_open4(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) struct seq_file *seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) ret = seq_open(file, &format4_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) seq = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) seq->private = inode->i_private; /* the dlm_ls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) static const struct file_operations format1_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) .open = table_open1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) .read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) .llseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) .release = seq_release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) static const struct file_operations format2_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) .open = table_open2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) .read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) .llseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) .release = seq_release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) static const struct file_operations format3_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) .open = table_open3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) .read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) .llseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) .release = seq_release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) static const struct file_operations format4_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) .open = table_open4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) .read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) .llseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) .release = seq_release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) * dump lkb's on the ls_waiters list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) static ssize_t waiters_read(struct file *file, char __user *userbuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) struct dlm_ls *ls = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) struct dlm_lkb *lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) size_t len = DLM_DEBUG_BUF_LEN, pos = 0, ret, rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) mutex_lock(&debug_buf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) mutex_lock(&ls->ls_waiters_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) memset(debug_buf, 0, sizeof(debug_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) list_for_each_entry(lkb, &ls->ls_waiters, lkb_wait_reply) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) ret = snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) lkb->lkb_id, lkb->lkb_wait_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) lkb->lkb_nodeid, lkb->lkb_resource->res_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (ret >= len - pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) pos += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) mutex_unlock(&ls->ls_waiters_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) rv = simple_read_from_buffer(userbuf, count, ppos, debug_buf, pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) mutex_unlock(&debug_buf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) static const struct file_operations waiters_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) .open = simple_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) .read = waiters_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) .llseek = default_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) void dlm_delete_debug_file(struct dlm_ls *ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) debugfs_remove(ls->ls_debug_rsb_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) debugfs_remove(ls->ls_debug_waiters_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) debugfs_remove(ls->ls_debug_locks_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) debugfs_remove(ls->ls_debug_all_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) debugfs_remove(ls->ls_debug_toss_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) void dlm_create_debug_file(struct dlm_ls *ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) char name[DLM_LOCKSPACE_LEN + 8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) /* format 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) ls->ls_debug_rsb_dentry = debugfs_create_file(ls->ls_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) dlm_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) ls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) &format1_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) /* format 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) memset(name, 0, sizeof(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_locks", ls->ls_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) ls->ls_debug_locks_dentry = debugfs_create_file(name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) dlm_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) ls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) &format2_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) /* format 3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) memset(name, 0, sizeof(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_all", ls->ls_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) ls->ls_debug_all_dentry = debugfs_create_file(name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) dlm_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) ls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) &format3_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) /* format 4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) memset(name, 0, sizeof(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_toss", ls->ls_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) ls->ls_debug_toss_dentry = debugfs_create_file(name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) dlm_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) ls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) &format4_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) memset(name, 0, sizeof(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_waiters", ls->ls_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) ls->ls_debug_waiters_dentry = debugfs_create_file(name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) dlm_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) ls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) &waiters_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) void __init dlm_register_debugfs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) mutex_init(&debug_buf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) dlm_root = debugfs_create_dir("dlm", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) void dlm_unregister_debugfs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) debugfs_remove(dlm_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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