LXR linux-bk/net/rxrpc/main.c

   1/* main.c: Rx RPC interface
   2 *
   3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the License, or (at your option) any later version.
  10 */
  11
  12#include <linux/module.h>
  13#include <linux/init.h>
  14#include <linux/sched.h>
  15#include <rxrpc/rxrpc.h>
  16#include <rxrpc/krxiod.h>
  17#include <rxrpc/krxsecd.h>
  18#include <rxrpc/krxtimod.h>
  19#include <rxrpc/transport.h>
  20#include <rxrpc/connection.h>
  21#include <rxrpc/call.h>
  22#include <rxrpc/message.h>
  23#include "internal.h"
  24
  25static int rxrpc_initialise(void);
  26static void rxrpc_cleanup(void);
  27
  28module_init(rxrpc_initialise);
  29module_exit(rxrpc_cleanup);
  30
  31MODULE_DESCRIPTION("Rx RPC implementation");
  32MODULE_AUTHOR("Red Hat, Inc.");
  33MODULE_LICENSE("GPL");
  34
  35__be32 rxrpc_epoch;
  36
  37/*****************************************************************************/
  38/*
  39 * initialise the Rx module
  40 */
  41static int rxrpc_initialise(void)
  42{
  43        int ret;
  44
  45        /* my epoch value */
  46        rxrpc_epoch = htonl(xtime.tv_sec);
  47
  48        /* register the /proc interface */
  49#ifdef CONFIG_PROC_FS
  50        ret = rxrpc_proc_init();
  51        if (ret<0)
  52                return ret;
  53#endif
  54
  55        /* register the sysctl files */
  56#ifdef CONFIG_SYSCTL
  57        ret = rxrpc_sysctl_init();
  58        if (ret<0)
  59                goto error_proc;
  60#endif
  61
  62        /* start the krxtimod daemon */
  63        ret = rxrpc_krxtimod_start();
  64        if (ret<0)
  65                goto error_sysctl;
  66
  67        /* start the krxiod daemon */
  68        ret = rxrpc_krxiod_init();
  69        if (ret<0)
  70                goto error_krxtimod;
  71
  72        /* start the krxsecd daemon */
  73        ret = rxrpc_krxsecd_init();
  74        if (ret<0)
  75                goto error_krxiod;
  76
  77        kdebug("\n\n");
  78
  79        return 0;
  80
  81 error_krxiod:
  82        rxrpc_krxiod_kill();
  83 error_krxtimod:
  84        rxrpc_krxtimod_kill();
  85 error_sysctl:
  86#ifdef CONFIG_SYSCTL
  87        rxrpc_sysctl_cleanup();
  88#endif
  89 error_proc:
  90#ifdef CONFIG_PROC_FS
  91        rxrpc_proc_cleanup();
  92#endif
  93        return ret;
  94} /* end rxrpc_initialise() */
  95
  96/*****************************************************************************/
  97/*
  98 * clean up the Rx module
  99 */
 100static void __exit rxrpc_cleanup(void)
 101{
 102        kenter("");
 103
 104        __RXACCT(printk("Outstanding Messages   : %d\n",
 105                        atomic_read(&rxrpc_message_count)));
 106        __RXACCT(printk("Outstanding Calls      : %d\n",
 107                        atomic_read(&rxrpc_call_count)));
 108        __RXACCT(printk("Outstanding Connections: %d\n",
 109                        atomic_read(&rxrpc_connection_count)));
 110        __RXACCT(printk("Outstanding Peers      : %d\n",
 111                        atomic_read(&rxrpc_peer_count)));
 112        __RXACCT(printk("Outstanding Transports : %d\n",
 113                        atomic_read(&rxrpc_transport_count)));
 114
 115        rxrpc_krxsecd_kill();
 116        rxrpc_krxiod_kill();
 117        rxrpc_krxtimod_kill();
 118#ifdef CONFIG_SYSCTL
 119        rxrpc_sysctl_cleanup();
 120#endif
 121#ifdef CONFIG_PROC_FS
 122        rxrpc_proc_cleanup();
 123#endif
 124
 125        __RXACCT(printk("Outstanding Messages   : %d\n",
 126                        atomic_read(&rxrpc_message_count)));
 127        __RXACCT(printk("Outstanding Calls      : %d\n",
 128                        atomic_read(&rxrpc_call_count)));
 129        __RXACCT(printk("Outstanding Connections: %d\n",
 130                        atomic_read(&rxrpc_connection_count)));
 131        __RXACCT(printk("Outstanding Peers      : %d\n",
 132                        atomic_read(&rxrpc_peer_count)));
 133        __RXACCT(printk("Outstanding Transports : %d\n",
 134                        atomic_read(&rxrpc_transport_count)));
 135
 136        kleave("");
 137} /* end rxrpc_cleanup() */
 138
 139/*****************************************************************************/
 140/*
 141 * clear the dead space between task_struct and kernel stack
 142 * - called by supplying -finstrument-functions to gcc
 143 */
 144#if 0
 145void __cyg_profile_func_enter (void *this_fn, void *call_site)
 146__attribute__((no_instrument_function));
 147
 148void __cyg_profile_func_enter (void *this_fn, void *call_site)
 149{
 150       asm volatile("  movl    %%esp,%%edi     \n"
 151                    "  andl    %0,%%edi        \n"
 152                    "  addl    %1,%%edi        \n"
 153                    "  movl    %%esp,%%ecx     \n"
 154                    "  subl    %%edi,%%ecx     \n"
 155                    "  shrl    $2,%%ecx        \n"
 156                    "  movl    $0xedededed,%%eax     \n"
 157                    "  rep stosl               \n"
 158                    :
 159                    : "i"(~(THREAD_SIZE-1)), "i"(sizeof(struct thread_info))
 160                    : "eax", "ecx", "edi", "memory", "cc"
 161                    );
 162}
 163
 164void __cyg_profile_func_exit(void *this_fn, void *call_site)
 165__attribute__((no_instrument_function));
 166
 167void __cyg_profile_func_exit(void *this_fn, void *call_site)
 168{
 169       asm volatile("  movl    %%esp,%%edi     \n"
 170                    "  andl    %0,%%edi        \n"
 171                    "  addl    %1,%%edi        \n"
 172                    "  movl    %%esp,%%ecx     \n"
 173                    "  subl    %%edi,%%ecx     \n"
 174                    "  shrl    $2,%%ecx        \n"
 175                    "  movl    $0xdadadada,%%eax     \n"
 176                    "  rep stosl               \n"
 177                    :
 178                    : "i"(~(THREAD_SIZE-1)), "i"(sizeof(struct thread_info))
 179                    : "eax", "ecx", "edi", "memory", "cc"
 180                    );
 181}
 182#endif
 183