You can use the function pointers for this. for example: if module A has the function need to called by B. Insert the module A first and declare the extern for these functions in module B. To solve the problem of calling module B functions from Module A we can use the function pointers as explained below.
write a function in the module A which has the code to update function pointers (these are pointers to module B functions called by module A) given by module B later. Call the A's update function pointers function with the array of functions of B so that the module A will have the pointers to function in B and can call them in runtime. either way you can do it. functions in second inserted module has to be updated to the first inserted module so that the first inserted module can call them. Hope this is clear. Thanks, Sriman On Thu, Jul 1, 2010 at 9:55 AM, Mulyadi Santosa <[email protected]>wrote: > On Wed, Jun 30, 2010 at 15:34, devendra dev <[email protected]> > wrote: > > hi to all > > this is dev > > i had a module called module1 which calls the function which is exported > by > > another module called module2 and the module2 calls a function which is > > exported by module1. When i perform insmod module1.ko and insmod > module2.ko > > those are saying error:unknown symbol in module. do any one know answer > pls > > suggest > > thanks > > dev. > > So A depends on B and vice versa? wonder how modprobe and depmod will > act on that situation... > > but anyway, have you declare the function name in each module as > "extern"? such as it originates in A, and in B you name "extern > blahblah"? > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to [email protected] > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- Thank You, శ్రీమన్ మిర్యాల
