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authorRalf Baechle <ralf@linux-mips.org>2006-02-23 07:23:27 -0500
committerRalf Baechle <ralf@linux-mips.org>2006-02-27 12:30:36 -0500
commit9b6695a8adfe0916e81ddd810a5b9db3eb8b0e46 (patch)
tree62ba9475530c88ccf2149cd58eabd97ebe096aca /arch/mips/sgi-ip27
parent3e6cb2d38a9c9758170813497a860c64543643d5 (diff)
[MIPS] SMP: Fix initialization order bug.
A recent change requires cpu_possible_map to be initialized before smp_sched_init() but most MIPS platforms were initializing their processors in the prom_prepare_cpus callback of smp_prepare_cpus. The simple fix of calling prom_prepare_cpus from one of the earlier SMP initialization hooks doesn't work well either since IPIs may require init_IRQ() to have completed, so bit the bullet and split prom_prepare_cpus into two initialization functions, plat_smp_setup which is called early from setup_arch and plat_prepare_cpus called where prom_prepare_cpus used to be called. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/sgi-ip27')
-rw-r--r--arch/mips/sgi-ip27/ip27-smp.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index dbef3f6b5650..09fa7f5216f0 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -140,7 +140,7 @@ static __init void intr_clear_all(nasid_t nasid)
140 REMOTE_HUB_CLR_INTR(nasid, i); 140 REMOTE_HUB_CLR_INTR(nasid, i);
141} 141}
142 142
143void __init prom_prepare_cpus(unsigned int max_cpus) 143void __init plat_smp_setup(void)
144{ 144{
145 cnodeid_t cnode; 145 cnodeid_t cnode;
146 146
@@ -161,6 +161,11 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
161 alloc_cpupda(0, 0); 161 alloc_cpupda(0, 0);
162} 162}
163 163
164void __init plat_prepare_cpus(unsigned int max_cpus)
165{
166 /* We already did everything necessary earlier */
167}
168
164/* 169/*
165 * Launch a slave into smp_bootstrap(). It doesn't take an argument, and we 170 * Launch a slave into smp_bootstrap(). It doesn't take an argument, and we
166 * set sp to the kernel stack of the newly created idle process, gp to the proc 171 * set sp to the kernel stack of the newly created idle process, gp to the proc