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powerpc: Fix early boot accounting of CPUs

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smp_release_cpus() waits for all cpus (including the bootcpu) due to an
off-by-one count on boot_cpu_count (which is all CPUs).  This patch replaces
that with spinning_secondaries (which is all secondary CPUs).

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Matt Evans
2011-05-25 18:09:12 +00:00
committed by Benjamin Herrenschmidt
parent 32d206eb56
commit 7ac87abb81
5 changed files with 13 additions and 6 deletions
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6
arch/powerpc/kernel/setup_64.c
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@@ -73,7 +73,7 @@
#endif
int boot_cpuid = 0;
int __initdata boot_cpu_count;
int __initdata spinning_secondaries;
u64 ppc64_pft_size;
/* Pick defaults since we might want to patch instructions
@@ -253,11 +253,11 @@ void smp_release_cpus(void)
for (i = 0; i < 100000; i++) {
mb();
HMT_low();
if (boot_cpu_count == 0)
if (spinning_secondaries == 0)
break;
udelay(1);
}
DBG("boot_cpu_count = %d\n", boot_cpu_count);
DBG("spinning_secondaries = %d\n", spinning_secondaries);
DBG(" <- smp_release_cpus()\n");
}