diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/lprocfs_counters.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/lprocfs_counters.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/lprocfs_counters.c b/drivers/staging/lustre/lustre/obdclass/lprocfs_counters.c deleted file mode 100644 index c83b7d7f8e72..000000000000 --- a/drivers/staging/lustre/lustre/obdclass/lprocfs_counters.c +++ /dev/null @@ -1,133 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2012, 2013, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/obdclass/lprocfs_counters.c - * - * Lustre lprocfs counter routines - * - * Author: Andreas Dilger <andreas.dilger@intel.com> - */ - -#include <linux/module.h> -#include <lprocfs_status.h> -#include <obd_support.h> - -void lprocfs_counter_add(struct lprocfs_stats *stats, int idx, long amount) -{ - struct lprocfs_counter *percpu_cntr; - struct lprocfs_counter_header *header; - int smp_id; - unsigned long flags = 0; - - if (!stats) - return; - - LASSERTF(0 <= idx && idx < stats->ls_num, - "idx %d, ls_num %hu\n", idx, stats->ls_num); - - /* With per-client stats, statistics are allocated only for - * single CPU area, so the smp_id should be 0 always. - */ - smp_id = lprocfs_stats_lock(stats, LPROCFS_GET_SMP_ID, &flags); - if (smp_id < 0) - return; - - header = &stats->ls_cnt_header[idx]; - percpu_cntr = lprocfs_stats_counter_get(stats, smp_id, idx); - percpu_cntr->lc_count++; - - if (header->lc_config & LPROCFS_CNTR_AVGMINMAX) { - /* - * lprocfs_counter_add() can be called in interrupt context, - * as memory allocation could trigger memory shrinker call - * ldlm_pool_shrink(), which calls lprocfs_counter_add(). - * LU-1727. - * - */ - if (in_interrupt() && - (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) - percpu_cntr->lc_sum_irq += amount; - else - percpu_cntr->lc_sum += amount; - - if (header->lc_config & LPROCFS_CNTR_STDDEV) - percpu_cntr->lc_sumsquare += (__s64)amount * amount; - if (amount < percpu_cntr->lc_min) - percpu_cntr->lc_min = amount; - if (amount > percpu_cntr->lc_max) - percpu_cntr->lc_max = amount; - } - lprocfs_stats_unlock(stats, LPROCFS_GET_SMP_ID, &flags); -} -EXPORT_SYMBOL(lprocfs_counter_add); - -void lprocfs_counter_sub(struct lprocfs_stats *stats, int idx, long amount) -{ - struct lprocfs_counter *percpu_cntr; - struct lprocfs_counter_header *header; - int smp_id; - unsigned long flags = 0; - - if (!stats) - return; - - LASSERTF(0 <= idx && idx < stats->ls_num, - "idx %d, ls_num %hu\n", idx, stats->ls_num); - - /* With per-client stats, statistics are allocated only for - * single CPU area, so the smp_id should be 0 always. - */ - smp_id = lprocfs_stats_lock(stats, LPROCFS_GET_SMP_ID, &flags); - if (smp_id < 0) - return; - - header = &stats->ls_cnt_header[idx]; - percpu_cntr = lprocfs_stats_counter_get(stats, smp_id, idx); - if (header->lc_config & LPROCFS_CNTR_AVGMINMAX) { - /* - * Sometimes we use RCU callbacks to free memory which calls - * lprocfs_counter_sub(), and RCU callbacks may execute in - * softirq context - right now that's the only case we're in - * softirq context here, use separate counter for that. - * bz20650. - * - */ - if (in_interrupt() && - (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) - percpu_cntr->lc_sum_irq -= amount; - else - percpu_cntr->lc_sum -= amount; - } - lprocfs_stats_unlock(stats, LPROCFS_GET_SMP_ID, &flags); -} -EXPORT_SYMBOL(lprocfs_counter_sub); |