diff options
| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2021-11-30 17:29:54 +0000 |
|---|---|---|
| committer | Rich Felker <dalias@libc.org> | 2021-12-06 10:12:07 -0500 |
| commit | 1022d5b576ebada0b59835b77e0300183fa72de9 (patch) | |
| tree | 42caf0c92fdbf31e1792ad656405d186a5aec6b5 | |
| parent | cdf26df8d200d6ff91fc30b32253cde198068b29 (diff) | |
| download | linux-sh-v5.16+j2.tar.gz | |
percpu: km: ensure it is used with NOMMU (either UP or SMP)v5.16+j2
Currently, NOMMU pull km allocator via !SMP dependency because most of
them are UP, yet for SMP+NOMMU vm allocator gets pulled which:
* may lead to broken build [1]
* ...or not working runtime due to [2]
It looks like SMP+NOMMU case was overlooked in bbddff054587 ("percpu:
use percpu allocator on UP too") so restore that.
[1]
For ARM SMP+NOMMU (R-class cores)
arm-none-linux-gnueabihf-ld: mm/percpu.o: in function `pcpu_post_unmap_tlb_flush':
mm/percpu-vm.c:188: undefined reference to `flush_tlb_kernel_range'
[2]
static inline
int vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages, unsigned int page_shift)
{
return -EINVAL;
}
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
| -rw-r--r-- | mm/Kconfig | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 28edafc820ad..65d8217b288e 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -428,9 +428,8 @@ config THP_SWAP # UP and nommu archs use km based percpu allocator # config NEED_PER_CPU_KM - depends on !SMP bool - default y + default !SMP || !MMU config CLEANCACHE bool "Enable cleancache driver to cache clean pages if tmem is present" |