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| author |  Vitaly Kuznetsov <vkuznets@redhat.com>
| 2021-04-06 17:56:40 +0200 |
|---|---|---|
| committer |  Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| 2021-04-07 19:02:43 +0200 |
| commit | fa26d0c778b432d3d9814ea82552e813b33eeb5c (patch) | |
| tree | 39348f87174de17b37f636b285fc208dd5100516 /arch/x86/include/asm/smp.h | |
| parent | Linux 5.12-rc6 (diff) | |
| download | linux-fa26d0c778b432d3d9814ea82552e813b33eeb5c.tar.gz linux-fa26d0c778b432d3d9814ea82552e813b33eeb5c.tar.bz2 linux-fa26d0c778b432d3d9814ea82552e813b33eeb5c.zip | |
ACPI: processor: Fix build when CONFIG_ACPI_PROCESSOR=m
Commit 8cdddd182bd7 ("ACPI: processor: Fix CPU0 wakeup in
acpi_idle_play_dead()") tried to fix CPU0 hotplug breakage by copying
wakeup_cpu0() + start_cpu0() logic from hlt_play_dead()//mwait_play_dead()
into acpi_idle_play_dead(). The problem is that these functions are not
exported to modules so when CONFIG_ACPI_PROCESSOR=m build fails.
The issue could've been fixed by exporting both wakeup_cpu0()/start_cpu0()
(the later from assembly) but it seems putting the whole pattern into a
new function and exporting it instead is better.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 8cdddd182bd7 ("CPI: processor: Fix CPU0 wakeup in acpi_idle_play_dead()")
Cc: <stable@vger.kernel.org> # 5.10+
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/x86/include/asm/smp.h')
| -rw-r--r-- | arch/x86/include/asm/smp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 57ef2094af93..630ff08532be 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -132,7 +132,7 @@ void native_play_dead(void); void play_dead_common(void); void wbinvd_on_cpu(int cpu); int wbinvd_on_all_cpus(void); -bool wakeup_cpu0(void); +void cond_wakeup_cpu0(void); void native_smp_send_reschedule(int cpu); void native_send_call_func_ipi(const struct cpumask *mask); |