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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2006-06-04 02:51:34 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-05 12:29:16 -0700
commitc7d2d28b9851d0ffc9924b0e36bac806d18ebf25 (patch)
treef48fadad9a5cce62f7016cb48bc258928cb49114 /arch/alpha/kernel/process.c
parentba0c19ed6a61a96d4b42b81cb19d4bc81b5f728c (diff)
[PATCH] alpha: SMP IRQ routing fix
From: Ivan Kokshaysky <ink@jurassic.park.msu.ru> After removal of fixup_cpu_present_map() function Alpha ended up with an empty cpu_present_map, so secondary CPUs on SMP systems are not being started. Worse, on some platforms we route interrupts to secondary CPUs using cpu_possible_map which is still populated properly. As a result, these interrupts go nowhere so the machines like DP264 aren't able to boot even with a primary CPU. Fixed basically by s/cpu_present_mask/cpu_present_map/. Thanks to Ernst Herzberg for reporting the bug and testing the fix. Cc: Ernst Herzberg <list-lkml@net4u.de> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/alpha/kernel/process.c')
-rw-r--r--arch/alpha/kernel/process.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 9924fd07743..c760a831fd1 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -94,7 +94,7 @@ common_shutdown_1(void *generic_ptr)
if (cpuid != boot_cpuid) {
flags |= 0x00040000UL; /* "remain halted" */
*pflags = flags;
- clear_bit(cpuid, &cpu_present_mask);
+ cpu_clear(cpuid, cpu_present_map);
halt();
}
#endif
@@ -120,8 +120,8 @@ common_shutdown_1(void *generic_ptr)
#ifdef CONFIG_SMP
/* Wait for the secondaries to halt. */
- cpu_clear(boot_cpuid, cpu_possible_map);
- while (cpus_weight(cpu_possible_map))
+ cpu_clear(boot_cpuid, cpu_present_map);
+ while (cpus_weight(cpu_present_map))
barrier();
#endif