Commit 507efd63 authored by Sven Schnelle's avatar Sven Schnelle Committed by Helge Deller
Browse files

parisc: add __pdc_cpu_rendezvous() 



When stopping SMP cpus send them into rendezvous, so we can
start them again later (when kexec'ing a new kernel).

Signed-off-by: default avatarSven Schnelle <svens@stackframe.org>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 08e69780

arch/parisc/include/asm/pdc.h

+1 −0
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ int pdc_sti_call(unsigned long func, unsigned long flags, 
                 unsigned long inptr, unsigned long outputr,

                 unsigned long glob_cfg);



int __pdc_cpu_rendezvous(void);

static inline char * os_id_to_string(u16 os_id) {

	switch(os_id) {

	case OS_ID_NONE:	return "No OS";

arch/parisc/kernel/firmware.c

+13 −0
Original line number Diff line number Diff line
@@ -311,6 +311,19 @@ int pdc_chassis_disp(unsigned long disp) 
	return retval;

}



/**

 * pdc_cpu_rendenzvous - Stop currently executing CPU

 * @retval: -1 on error, 0 on success

 */

int __pdc_cpu_rendezvous(void)

{

	if (is_pdc_pat())

		return mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_RENDEZVOUS);

	else

		return mem_pdc_call(PDC_PROC, 1, 0);

}





/**

 * pdc_chassis_warn - Fetches chassis warnings

 * @retval: -1 on error, 0 on success

arch/parisc/kernel/smp.c

+1 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ halt_processor(void) 
	/* REVISIT : does PM *know* this CPU isn't available? */

	set_cpu_online(smp_processor_id(), false);

	local_irq_disable();

	__pdc_cpu_rendezvous();

	for (;;)

		;

}