| Message ID | 1529341199-17682-5-git-send-email-rppt@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 06/18/2018 09:59 AM, Mike Rapoport wrote: > Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> > --- > include/linux/bootmem.h | 17 ++++++++++++++--- > 1 file changed, 14 insertions(+), 3 deletions(-) > > diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h > index 7942a96..1526ba1 100644 > --- a/include/linux/bootmem.h > +++ b/include/linux/bootmem.h > @@ -27,9 +27,20 @@ extern unsigned long max_pfn; > extern unsigned long long max_possible_pfn; > > #ifndef CONFIG_NO_BOOTMEM > -/* > - * node_bootmem_map is a map pointer - the bits represent all physical > - * memory pages (including holes) on the node. > +/** > + * struct bootmem_data - per-node information used by the bootmem allocator > + * @node_min_pfn: the starting physical address of the node's memory > + * @node_low_pfn: the end physical address of the directly addressable memory > + * @node_bootmem_map: is a bitmap pointer - the bits represent all physical > + * memory pages (including holes) on the node. > + * @last_end_off: the offset within the page of the end of the last allocation; > + * if 0, the page used is full > + * @hint_idx: the the PFN of the page used with the last allocation; drop one "the" above. > + * together with using this with the @last_end_offset field, > + * a test can be made to see if allocations can be merged > + * with the page used for the last allocation rather than > + * using up a full new page. > + * @list: list entry in the linked list ordered by the memory addresses > */ > typedef struct bootmem_data { > unsigned long node_min_pfn; >
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 7942a96..1526ba1 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -27,9 +27,20 @@ extern unsigned long max_pfn; extern unsigned long long max_possible_pfn; #ifndef CONFIG_NO_BOOTMEM -/* - * node_bootmem_map is a map pointer - the bits represent all physical - * memory pages (including holes) on the node. +/** + * struct bootmem_data - per-node information used by the bootmem allocator + * @node_min_pfn: the starting physical address of the node's memory + * @node_low_pfn: the end physical address of the directly addressable memory + * @node_bootmem_map: is a bitmap pointer - the bits represent all physical + * memory pages (including holes) on the node. + * @last_end_off: the offset within the page of the end of the last allocation; + * if 0, the page used is full + * @hint_idx: the the PFN of the page used with the last allocation; + * together with using this with the @last_end_offset field, + * a test can be made to see if allocations can be merged + * with the page used for the last allocation rather than + * using up a full new page. + * @list: list entry in the linked list ordered by the memory addresses */ typedef struct bootmem_data { unsigned long node_min_pfn;
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> --- include/linux/bootmem.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-)