Yes the global variable declared in any file is accessed from other functions in the kernel. but they are not visible to a module until and unlesss you have exported the symbol using EXPORT_SYMBOL. A module can use only those symbols directly which are in /proc/ksyms HTH, raghu On 11 Jan 2003, Rajaram Suresh Gaunker wrote: > hey can anybody plz tell me , whether a Global variable declared > in any file is easily acessible from other functions in kernel > > EXPORT_SYMBOL is the macro to export these global variables ??? > > plz clarify this > bye > Rajaram > > > > On Sat, 11 Jan 2003 Nandan Naik wrote : > >Hey guys, > >I m trying to schedule a Kernel Timer such that a > >function I need runs when the timer expires. But with > >the current way I m doing it, the system always > >crashes. > > > >Heres what I have: > > > >....... > >....... > > > >/* Function Prototype */ > >void timerFunction( unsigned long ); > > > >....... > >....... > > > >/* Global Variables */ > >struct timer_list TimerFunctionTimer; > > > >....... > >....... > > > >/* Inside init_module */ > >init_timer ( &TimerFunctionTimer ); > >TimerFunctionTimer.expires = (jiffies + HZ); > >TimerFunctionTimer.function = timerFunction; > >add_timer( &TimerFunctionTimer ); > > > >...... > >...... > > > >Am I doing something wrong here ? Any help would be > >greatly appreciated. Thank you. > > > >Nandan > > > > > >__________________________________________________ > >Do you Yahoo!? > >Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > >http://mailplus.yahoo.com > >-- > >Kernelnewbies: Help each other learn about the Linux kernel. > >Archive: http://mail.nl.linux.org/kernelnewbies/ > >FAQ: http://kernelnewbies.org/faq/ > > > > > > R@j@r@m > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
