Hi All, i m using linux-kernel 2.6.27 & a board of MPC8555 processor. i have also DSP-core on the same board.
My aim is : Each time the DSP-core interrupts the MPC8555 processor, a process in the user space will be informed by the arrival of this each interrupt. So i decided to use sw signals, in the ISR of the DSP-core interrupt i send a SW signal to the user space process? Is this the best solution? are there any better suggestion to achieve my aim? i used the kernel API send_sig_info because i want to send information with the sent signal & my signal type was SIGUSR1 i could receive the SW signal successfully but i found out that the standard SW signals are not queued if they r in the pending queue of the user space process but the real-time signals do. so i changed the type of the signal to SIGRTMIN but unfortunately i could receive any SW signal from my ISR & i noticed that always the second interrupt causes a kernel panic so am i using the correct signal type? am i using the correct kernel API to send a real-time SW signal? plz help -- View this message in context: http://www.nabble.com/how-can-i-send-real-time-signal--tp23892580p23892580.html Sent from the linuxppc-dev mailing list archive at Nabble.com. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
