xtensa: SMP: limit number of possible CPUs by NR_CPUS
authorMax Filippov <jcmvbkbc@gmail.com>
Sun, 27 Jan 2019 04:35:18 +0000 (20:35 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Mar 2019 21:02:29 +0000 (14:02 -0700)
commit419bb616e9eadbcc9faf1dd58e12e2bb13fcf500
tree2e3ce3625623a098afd6f24fe82f0c0c7d0e0086
parentd9ba842efdf068c53095b15f68377327259c3d16
xtensa: SMP: limit number of possible CPUs by NR_CPUS

[ Upstream commit 25384ce5f9530def39421597b1457d9462df6455 ]

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>
arch/xtensa/kernel/smp.c