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Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index e5d71ba4e6ae..93f646e0b4b5 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -696,7 +696,7 @@ kernel/dma/contiguous.c cma_pernuma=nn[MG] - [ARM64,KNL,CMA] + [KNL,CMA] Sets the size of kernel per-numa memory area for contiguous memory allocations. A value of 0 disables per-numa CMA altogether. And If this option is not @@ -706,6 +706,17 @@ which is located in node nid, if the allocation fails, they will fallback to the global default memory area. + numa_cma=<node>:nn[MG][,<node>:nn[MG]] + [KNL,CMA] + Sets the size of kernel numa memory area for + contiguous memory allocations. It will reserve CMA + area for the specified node. + + With numa CMA enabled, DMA users on node nid will + first try to allocate buffer from the numa area + which is located in node nid, if the allocation fails, + they will fallback to the global default memory area. + cmo_free_hint= [PPC] Format: { yes | no } Specify whether pages are marked as being inactive when they are freed. This is used in CMO environments |