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xtensa: SMP: limit number of possible CPUs by NR_CPUS
[ Upstream commit 25384ce5f9
]
This fixes the following warning at boot when the kernel is booted on a
board with more CPU cores than was configured in NR_CPUS:
smp_init_cpus: Core Count = 8
smp_init_cpus: Core Id = 0
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at include/linux/cpumask.h:121 smp_init_cpus+0x54/0x74
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 5.0.0-rc3-00015-g1459333f88a0 #124
Call Trace:
__warn$part$3+0x6a/0x7c
warn_slowpath_null+0x35/0x3c
smp_init_cpus+0x54/0x74
setup_arch+0x1c0/0x1d0
start_kernel+0x44/0x310
_startup+0x107/0x107
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
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@ -96,6 +96,11 @@ void __init smp_init_cpus(void)
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pr_info("%s: Core Count = %d\n", __func__, ncpus);
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pr_info("%s: Core Id = %d\n", __func__, core_id);
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if (ncpus > NR_CPUS) {
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ncpus = NR_CPUS;
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pr_info("%s: limiting core count by %d\n", __func__, ncpus);
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}
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for (i = 0; i < ncpus; ++i)
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set_cpu_possible(i, true);
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}
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