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authorRalf Baechle <ralf@linux-mips.org>2006-02-23 12:23:27 +0000
committerRalf Baechle <ralf@linux-mips.org>2006-02-27 17:30:36 +0000
commit9b6695a8adfe0916e81ddd810a5b9db3eb8b0e46 (patch)
tree62ba9475530c88ccf2149cd58eabd97ebe096aca /include/asm-mips/smp.h
parent3e6cb2d38a9c9758170813497a860c64543643d5 (diff)
downloadop-kernel-dev-9b6695a8adfe0916e81ddd810a5b9db3eb8b0e46.zip
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[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 'include/asm-mips/smp.h')
-rw-r--r--include/asm-mips/smp.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/asm-mips/smp.h b/include/asm-mips/smp.h
index 5618f1e..75c6fe7c 100644
--- a/include/asm-mips/smp.h
+++ b/include/asm-mips/smp.h
@@ -58,7 +58,9 @@ static inline int num_booting_cpus(void)
return cpus_weight(cpu_callout_map);
}
-/* These are defined by the board-specific code. */
+/*
+ * These are defined by the board-specific code.
+ */
/*
* Cause the function described by call_data to be executed on the passed
@@ -79,7 +81,12 @@ extern void prom_boot_secondary(int cpu, struct task_struct *idle);
extern void prom_init_secondary(void);
/*
- * Detect available CPUs, populate phys_cpu_present_map before smp_init
+ * Populate cpu_possible_map before smp_init, called from setup_arch.
+ */
+extern void plat_smp_setup(void);
+
+/*
+ * Called after init_IRQ but before __cpu_up.
*/
extern void prom_prepare_cpus(unsigned int max_cpus);
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