[PATCH] Suspend2 Merge: Get module list.

[PATCH] Suspend2 Merge: Get module list.

[Nigel Cunningham]

Hi again.

This patch adds support for getting a list of currently loaded modules.
It's used in displaying debugging info:


> Please include the following information in bug reports:
> - SWSUSP core    : 2.0.0.107
> - Kernel Version : 2.4.27
> - Version spec.  : 2.0.1
> - Compiler vers. : 3.3
> - Modules loaded : ppp_mppe ppp_deflate zlib_inflate zlib_deflate
> bsd_comp ltmodem_cs ds i82365 pcmcia_core maestro3 ac97_codec
> soundcore ftdi_sio visor usbserial printer usb-uhci usbcore Mvnetd
> Mvnet Mvnetint Mvw Mvmouse Mvkbd Mvgic Mvdsp Mserial Mmpip Mmerge
> mki-adapter i830 agpgart parport_pc lp parport ide-cd cdrom floppy
> ipt_LOG ipt_state ipt_MASQUERADE iptable_nat ip_conntrack
> ipt_multiport ipt_REJECT iptable_filter ip_tables ppp_async
> ppp_generic slhc af_packet omnibook battery button eepro100 mii rtc
> unix suspend_swap suspend_block_io suspend_lzf suspend_bootsplash
> suspend_text suspend_core
> - Attempt number : 1
> - Parameters     : 0 2816 0 0 0 128
> - Limits         : 161664 pages RAM. Initial boot: 156425.
> - Overall expected compression percentage: 0.
> - LZF Compressor enabled.
>   Compressed 340914176 bytes into 187258858 (45 percent compression).
> - Swapwriter active.
>   Swap available for image: 172688 pages.
> - Debugging compiled in.
> - Preemptive kernel.
> - I/O speed: Write 28 MB/s, Read 49 MB/s.
> [root@laptop current-2.6.9-rc2-patches]#

(I'm using 2.4 because there's no 2.6 pcmcia_cs ltmodem driver yet :>).

Regards,

Nigel

diff -ruN linux-2.6.9-rc1/kernel/module.c software-suspend-linux-2.6.9-rc1-rev3/kernel/module.c
--- linux-2.6.9-rc1/kernel/module.c	2004-09-07 21:59:00.000000000 +1000
+++ software-suspend-linux-2.6.9-rc1-rev3/kernel/module.c	2004-09-09 19:36:24.000000000 +1000
@@ -2146,6 +2146,33 @@
 	printk("\n");
 }
 
+#define MODLIST_SIZE 4096
+
+void print_module_list(void)
+{
+	static char modlist[MODLIST_SIZE];
+	struct module *mod;
+	int pos = 0;
+
+	list_for_each_entry(mod, &modules, list)
+		if (mod->name)
+			pos += snprintf(modlist+pos, MODLIST_SIZE-pos-1, 
+					"%s ", mod->name);
+	printk("%s\n",modlist);
+}
+
+int print_module_list_to_buffer(char * buffer, int size)
+{
+	struct module *mod;
+	int pos = 0;
+
+	list_for_each_entry(mod, &modules, list)
+		if (mod->name)
+			pos += snprintf(buffer+pos, size-pos-1, 
+					"%s ", mod->name);
+	return pos;
+}
+
 #ifdef CONFIG_MODVERSIONS
 /* Generate the signature for struct module here, too, for modversions. */
 void struct_module(struct module *mod) { return; }
@@ -2157,3 +2184,6 @@
 	return subsystem_register(&module_subsys);
 }
 __initcall(modules_init);
+
+/* For Suspend2 */
+EXPORT_SYMBOL(print_module_list_to_buffer);

-- 
Nigel Cunningham
Pastoral Worker
Christian Reformed Church of Tuggeranong
PO Box 1004, Tuggeranong, ACT 2901

Many today claim to be tolerant. True tolerance, however, can cope with others
being intolerant.

Re: [PATCH] Suspend2 Merge: Get module list.

[Christoph Hellwig]

On Thu, Sep 16, 2004 at 09:06:12PM +1000, Nigel Cunningham wrote:
> Hi again.
> 
> This patch adds support for getting a list of currently loaded modules.
> It's used in displaying debugging info:

This is printed in an oops anyway, and if the system doesn't crash a
cat /proc/modules does the same.