linux-kernel - [PATCH 04/11] docs/mm: bootmem: add kernel-doc description of 'struct bootmem

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Message-Id: <1529341199-17682-5-git-send-email-rppt@linux.vnet.ibm.com>
Date:   Mon, 18 Jun 2018 19:59:52 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     Jonathan Corbet <corbet@....net>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-doc <linux-doc@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: [PATCH 04/11] docs/mm: bootmem: add kernel-doc description of 'struct bootmem_data'

Signed-off-by: Mike Rapoport <rppt@...ux.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;
+ *	       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;
-- 
2.7.4