diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-02-19 17:56:48 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-24 14:09:29 +1100 |
| commit | 9be77e11dade414d2fa63750aa5c754fac49d619 (patch) | |
| tree | e83784213c3cb085bd7f1a4bf3f5bcdb134db463 /arch/powerpc/mm/mem.c | |
| parent | 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 (diff) | |
| download | lwn-9be77e11dade414d2fa63750aa5c754fac49d619.tar.gz lwn-9be77e11dade414d2fa63750aa5c754fac49d619.zip | |
powerpc/mm: Move the linear_mapping_mutex to the ifdef where it is used
The mutex linear_mapping_mutex is defined at the of the file while its
only two user are within the CONFIG_MEMORY_HOTPLUG block.
A compile without CONFIG_MEMORY_HOTPLUG set fails on PREEMPT_RT because
its mutex implementation is smart enough to realize that it is unused.
Move the definition of linear_mapping_mutex to ifdef block where it is
used.
Fixes: 1f73ad3e8d755 ("powerpc/mm: print warning in arch_remove_linear_mapping()")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210219165648.2505482-1-bigeasy@linutronix.de
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 4e8ce6d85232..7a59a5c9aa5d 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -54,7 +54,6 @@ #include <mm/mmu_decl.h> -static DEFINE_MUTEX(linear_mapping_mutex); unsigned long long memory_limit; bool init_mem_is_free; @@ -72,6 +71,7 @@ pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, EXPORT_SYMBOL(phys_mem_access_prot); #ifdef CONFIG_MEMORY_HOTPLUG +static DEFINE_MUTEX(linear_mapping_mutex); #ifdef CONFIG_NUMA int memory_add_physaddr_to_nid(u64 start) |