add crash support and fix some bugs in netconsole

diff --git a/lustre/kernel_patches/patches/netconsole-2.4.20-rh.patch b/lustre/kernel_patches/patches/netconsole-2.4.20-rh.patch
index e7b0479..f11853c 100644 (file)
--- a/lustre/kernel_patches/patches/netconsole-2.4.20-rh.patch
+++ b/lustre/kernel_patches/patches/netconsole-2.4.20-rh.patch
@@ -1,7 +1,7 @@
 Index: linux-2.4.20-rh/drivers/net/netconsole.c
 ===================================================================
 --- linux-2.4.20-rh.orig/drivers/net/netconsole.c      2003-07-22 16:02:23.000000000 +0800
-+++ linux-2.4.20-rh/drivers/net/netconsole.c   2003-10-30 11:47:46.000000000 +0800
++++ linux-2.4.20-rh/drivers/net/netconsole.c   2003-10-31 07:24:53.000000000 +0800
 @@ -12,6 +12,8 @@
   *
   * 2001-09-17    started by Ingo Molnar.
@@ -27,7 +27,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  
  #define MAX_UDP_CHUNK 1460
  #define MAX_PRINT_CHUNK (MAX_UDP_CHUNK-HEADER_LEN)
-@@ -188,6 +190,46 @@
+@@ -188,6 +190,42 @@
        }
  }
  
@@ -50,11 +50,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
 +              return;
 +      Set_Sysrq_mode();
 +      get_current_regs(&regs);
-+      if (req->from != 'c'){
-+              handle_sysrq((int)req->from, &regs, NULL);
-+      }else{
-+              printk(KERN_INFO"We still not implemented netdump in sysrq\n"); 
-+      }
++      handle_sysrq((int)req->from, &regs, NULL);
 +      Clear_Sysrq_mode();
 +}
 +static void netdump_poll(struct net_device *dev)
@@ -74,7 +70,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  static struct sk_buff * alloc_netconsole_skb(struct net_device *dev, int len, int reserve)
  {
        int once = 1;
-@@ -209,7 +251,7 @@
+@@ -209,7 +247,7 @@
                                once = 0;
                        }
                        Dprintk("alloc skb: polling controller ...\n");
@@ -83,7 +79,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
                        goto repeat;
                }
        }
-@@ -231,7 +273,7 @@
+@@ -231,7 +269,7 @@
                spin_unlock(&dev->xmit_lock);
  
                Dprintk("xmit skb: polling controller ...\n");
@@ -92,7 +88,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
                zap_completion_queue();
                goto repeat_poll;
        }
-@@ -426,18 +468,19 @@
+@@ -426,18 +464,19 @@
  static spinlock_t sequence_lock = SPIN_LOCK_UNLOCKED;
  static unsigned int log_offset;
  
@@ -114,7 +110,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
                unsigned long flags;
  
                __save_flags(flags);
-@@ -567,8 +610,6 @@
+@@ -567,8 +606,6 @@
        req_t *req;
        struct net_device *dev;
  
@@ -123,7 +119,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  #if DEBUG
        {
                static int packet_count;
-@@ -722,8 +763,16 @@
+@@ -722,8 +759,16 @@
        Dprintk("... netdump from:    %08x.\n", req->from);
        Dprintk("... netdump to:      %08x.\n", req->to);
  
@@ -141,7 +137,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
        return NET_RX_DROP;
  }
  
-@@ -763,6 +812,7 @@
+@@ -763,6 +808,7 @@
        kunmap_atomic(kaddr, KM_NETDUMP);
  }
  
@@ -149,7 +145,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  /*
   * This function waits for the client to acknowledge the receipt
   * of the netdump startup reply, with the possibility of packets
-@@ -792,7 +842,7 @@
+@@ -792,7 +838,7 @@
                // wait 1 sec.
                udelay(100);
                Dprintk("handshake: polling controller ...\n");
@@ -158,7 +154,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
                zap_completion_queue();
                req = get_new_req();
                if (req)
-@@ -904,7 +954,7 @@
+@@ -904,7 +950,7 @@
        while (netdump_mode) {
                __cli();
                Dprintk("main netdump loop: polling controller ...\n");
@@ -167,7 +163,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
                zap_completion_queue();
  #if !CLI
                __sti();
-@@ -1009,6 +1059,32 @@
+@@ -1009,6 +1055,32 @@
        printk("NETDUMP END!\n");
        __restore_flags(flags);
  }
@@ -200,7 +196,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  
  static char *dev;
  static int netdump_target_eth_byte0 = 255;
-@@ -1087,11 +1163,12 @@
+@@ -1087,11 +1159,12 @@
  
  static struct console netconsole =
         { flags: CON_ENABLED, write: write_netconsole_msg };
@@ -214,20 +210,27 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  
        printk(KERN_INFO "netlog: using network device <%s>\n", dev);
        // this will be valid once the device goes up.
-@@ -1101,10 +1178,12 @@
+@@ -1101,10 +1174,6 @@
                printk(KERN_ERR "netlog: network device %s does not exist, aborting.\n", dev);
                return -1;
        }
-+#if 0
-       if (!ndev->poll_controller) {
-               printk(KERN_ERR "netlog: %s's network driver does not implement netlogging yet, aborting.\n", dev);
-               return -1;
-       }
-+#endif
+-      if (!ndev->poll_controller) {
+-              printk(KERN_ERR "netlog: %s's network driver does not implement netlogging yet, aborting.\n", dev);
+-              return -1;
+-      }
        in_dev = in_dev_get(ndev);
        if (!in_dev) {
                printk(KERN_ERR "netlog: network device %s is not an IP protocol device, aborting.\n", dev);
-@@ -1214,12 +1293,27 @@
+@@ -1137,8 +1206,6 @@
+       if (!netdump_target_ip && !netlog_target_ip && !syslog_target_ip) {
+               printk(KERN_ERR "netlog: target_ip parameter not specified, aborting.\n");
+               return -1;
+-      }
+-      if (netdump_target_ip) {
+ #define IP(x) ((unsigned char *)&netdump_target_ip)[x]
+               printk(KERN_INFO "netlog: using netdump target IP %u.%u.%u.%u\n",
+                       IP(3), IP(2), IP(1), IP(0));
+@@ -1214,12 +1281,27 @@
  
        mhz_cycles = (unsigned long long)mhz * 1000000ULL;
        jiffy_cycles = (unsigned long long)mhz * (1000000/HZ);
@@ -258,7 +261,7 @@ Index: linux-2.4.20-rh/drivers/net/netconsole.c
  #define STARTUP_MSG "[...network console startup...]\n"
        write_netconsole_msg(NULL, STARTUP_MSG, strlen(STARTUP_MSG));
  
-@@ -1230,7 +1324,11 @@
+@@ -1230,7 +1312,11 @@
  
  static void cleanup_netconsole(void)
  {
@@ -404,3 +407,16 @@ Index: linux-2.4.20-rh/arch/i386/kernel/i386_ksyms.c
  EXPORT_SYMBOL_GPL(show_mem);
  EXPORT_SYMBOL_GPL(show_state);
  EXPORT_SYMBOL_GPL(show_regs);
+Index: linux-2.4.20-rh/kernel/panic.c
+===================================================================
+--- linux-2.4.20-rh.orig/kernel/panic.c        2003-10-31 07:25:19.000000000 +0800
++++ linux-2.4.20-rh/kernel/panic.c     2003-10-31 07:25:59.000000000 +0800
+@@ -219,8 +219,6 @@
+       }
+ #endif
+ 
+-      if (netdump_func)
+-              BUG();
+       if (in_interrupt())
+               printk(KERN_EMERG "In interrupt handler - not syncing\n");
+       else if (!current->pid)