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net/sctp/objcnt.c
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/* SCTP kernel implementation |
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* (C) Copyright IBM Corp. 2001, 2004 |
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* |
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* This file is part of the SCTP kernel implementation |
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* |
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* Support for memory object debugging. This allows one to monitor the |
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* object allocations/deallocations for types instrumented for this * via the proc fs. * |
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* This SCTP implementation is free software; |
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* you can redistribute it and/or modify it under the terms of |
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* the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. |
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* |
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* This SCTP implementation is distributed in the hope that it |
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* 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 for more details. |
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* |
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* You should have received a copy of the GNU General Public License * along with GNU CC; see the file COPYING. If not, write to * the Free Software Foundation, 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. * |
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* Please send any bug reports or fixes you make to the * email address(es): * lksctp developers <lksctp-developers@lists.sourceforge.net> |
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* |
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* Or submit a bug report through the following website: * http://www.sf.net/projects/lksctp * |
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* Written or modified by: |
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* Jon Grimm <jgrimm@us.ibm.com> |
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* |
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* Any bugs reported given to us we will try to fix... any fixes shared will * be incorporated into the next SCTP release. */ #include <linux/kernel.h> #include <net/sctp/sctp.h> /* * Global counters to count raw object allocation counts. * To add new counters, choose a unique suffix for the variable * name as the helper macros key off this suffix to make * life easier for the programmer. */ SCTP_DBG_OBJCNT(sock); SCTP_DBG_OBJCNT(ep); SCTP_DBG_OBJCNT(transport); SCTP_DBG_OBJCNT(assoc); SCTP_DBG_OBJCNT(bind_addr); SCTP_DBG_OBJCNT(bind_bucket); SCTP_DBG_OBJCNT(chunk); SCTP_DBG_OBJCNT(addr); SCTP_DBG_OBJCNT(ssnmap); SCTP_DBG_OBJCNT(datamsg); |
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SCTP_DBG_OBJCNT(keys); |
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/* An array to make it easy to pretty print the debug information * to the proc fs. */ static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = { SCTP_DBG_OBJCNT_ENTRY(sock), SCTP_DBG_OBJCNT_ENTRY(ep), SCTP_DBG_OBJCNT_ENTRY(assoc), SCTP_DBG_OBJCNT_ENTRY(transport), SCTP_DBG_OBJCNT_ENTRY(chunk), SCTP_DBG_OBJCNT_ENTRY(bind_addr), SCTP_DBG_OBJCNT_ENTRY(bind_bucket), SCTP_DBG_OBJCNT_ENTRY(addr), SCTP_DBG_OBJCNT_ENTRY(ssnmap), SCTP_DBG_OBJCNT_ENTRY(datamsg), |
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SCTP_DBG_OBJCNT_ENTRY(keys), |
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}; /* Callback from procfs to read out objcount information. * Walk through the entries in the sctp_dbg_objcnt array, dumping * the raw object counts for each monitored type. |
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*/ |
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static int sctp_objcnt_seq_show(struct seq_file *seq, void *v) |
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{ |
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int i, len; |
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|
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i = (int)*(loff_t *)v; |
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seq_printf(seq, "%s: %d%n", sctp_dbg_objcnt[i].label, atomic_read(sctp_dbg_objcnt[i].counter), &len); seq_printf(seq, "%*s ", 127 - len, ""); |
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return 0; } static void *sctp_objcnt_seq_start(struct seq_file *seq, loff_t *pos) { return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos; } static void sctp_objcnt_seq_stop(struct seq_file *seq, void *v) { } static void * sctp_objcnt_seq_next(struct seq_file *seq, void *v, loff_t *pos) { ++*pos; return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos; |
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} |
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static const struct seq_operations sctp_objcnt_seq_ops = { .start = sctp_objcnt_seq_start, .next = sctp_objcnt_seq_next, .stop = sctp_objcnt_seq_stop, .show = sctp_objcnt_seq_show, }; static int sctp_objcnt_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &sctp_objcnt_seq_ops); } static const struct file_operations sctp_objcnt_ops = { .open = sctp_objcnt_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; |
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/* Initialize the objcount in the proc filesystem. */ void sctp_dbg_objcnt_init(void) { |
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struct proc_dir_entry *ent; |
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ent = proc_create("sctp_dbg_objcnt", 0, proc_net_sctp, &sctp_objcnt_ops); |
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if (!ent) |
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printk(KERN_WARNING |
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"sctp_dbg_objcnt: Unable to create /proc entry. "); |
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} /* Cleanup the objcount entry in the proc filesystem. */ void sctp_dbg_objcnt_exit(void) { remove_proc_entry("sctp_dbg_objcnt", proc_net_sctp); } |