do_schedule is a function from kgdb's source code. it hooks instead of the regular schedule() function and calls it later on. it could be that the kgdb patch remove schedule() from the export list to avoid someone to bypass their hook Hilik -----Original Message----- From: kernelnewbies-bounce@nl.linux.org [mailto:kernelnewbies-bounce@nl.linux.org]On Behalf Of Pichai Raghavan Sent: Sunday, January 06, 2002 11:16 AM To: kernelnewbies@nl.linux.org Cc: uansari@yahoo.com Subject: Re: Unresolved symbol Looks to me that the kernel that u have used is not exporting the schedule function as it does not appear in /proc/ksyms. Hence when u are trying to load a module insmod gives a problem. 2 alternatives to ur solution: (i) Recompile kernel after adding the symbol schedule in file kernel/ksyms.c (ii) Do not call schedule from module. What is this function do_schedule; I do not see this function in my source code? Can u check up with the linux kernel source and check if this is an equivalent function. Regards Raghav Usman's original mail: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> I am compiling kernel module with a command line cc -D__KERNEL__ -DMODULE -Wall -O2 -g -I. -I/usr/src/linux/include -c -o file1.o file1.c ld -r file1.o file 2.o file3.o modbinary.o Module loads and executes fine. After applying the serial kdb patch (patch applied nicely) and recompiling the kernel, I was getting lot of unresolved symbols, which I understood was due to MODVERSION bug. I have over come the problem. However now I am getting only one unresolved symbol [root@karachi]# insmod modbinary.o modbinary.o: unresolved symbol schedule when I do, I get [root@karachi /root]# cat /proc/ksyms | grep schedule c0122900 schedule_task_R2d6c3d04 c0122b20 flush_scheduled_tasks_R7c3242b4 c01150f0 do_schedule_R26171012 c0109318 kern_schedule_Rb32aaa1b c0115030 schedule_timeout_R17d59d01 c0203540 tcp_tw_deschedule_Rae427462 I donot see schedule() function in the list above, even though this is from schd.c file. What can I do to resolve this problem. Usman __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
