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).

Sven Schnelle committed 7 years ago

Commit 507efd61 parent 08e69783 files · +15 −0Browse files

Unified · Split

3 files

@@ -91,6 +91,7 @@ int pdc_sti_call(unsigned long func, unsigned long flags, · 90 unmodified lines
91	91	unsigned long inptr, unsigned long outputr,
92	92	unsigned long glob_cfg);
93	93
	94	+int __pdc_cpu_rendezvous(void);
94	95	static inline char * os_id_to_string(u16 os_id) {
95	96	switch(os_id) {
96	97	case OS_ID_NONE: return "No OS";

@@ -311,6 +311,19 @@ int pdc_chassis_disp(unsigned long disp) · 310 unmodified lines
311	311	return retval;
312	312	}
313	313
	314	+/**
	315	+ * pdc_cpu_rendenzvous - Stop currently executing CPU
	316	+ * @retval: -1 on error, 0 on success
	317	+ */
	318	+int __pdc_cpu_rendezvous(void)
	319	+{
	320	+ if (is_pdc_pat())
	321	+ return mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_RENDEZVOUS);
	322	+ else
	323	+ return mem_pdc_call(PDC_PROC, 1, 0);
	324	+}
	325	+
	326	+
314	327	/**
315	328	* pdc_chassis_warn - Fetches chassis warnings
316	329	* @retval: -1 on error, 0 on success

@@ -109,6 +109,7 @@ halt_processor(void) · 108 unmodified lines
109	109	/* REVISIT : does PM know this CPU isn't available? */
110	110	set_cpu_online(smp_processor_id(), false);
111	111	local_irq_disable();
	112	+ __pdc_cpu_rendezvous();
112	113	for (;;)
113	114	;
114	115	}

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