我正在做一些中枢工作,我正在同时在三个不同页面台的页表上重复工作。 当我需要绘制网页表时,我使用<代码>pte_offset_map。 然而,我认识到,由于记忆丰富,这一方法不会奏效,因为pte_offset_map将尝试使用同一公里长的航程(pte_offset_map use kmap_atomic in linux 2.6.32)。 我看到有一个使用其他<代码>kmap_atomic的<>密码>。
然而,我需要一度绘制三个不同的页表。 我对一些解决办法的想法是,只需要一度绘制两页的表格(我可以 inter回,只绘制两页的地图,或临时复制一页的表格,而我则绘制另外两页的地图......),但这些解决办法是不可取的。 虽然关于第三页表格的人工绘制,有<代码>kmap_atomic(pmd_page(*pmd),KM_USER0),但这一办法似乎并不十分普遍。 然而,我确实认为,这种办法在效率和简化方面是最好的。
是否有任何想法来看待这一问题?
您可使用<代码>vmalloc 地址空间绘制任意页码。 见这些预报:
extern void vm_unmap_ram(const void *mem, unsigned int count);
extern void *vm_map_ram(struct page **pages, unsigned int count,
int node, pgprot_t prot);
For example, let s say I want to find a particular word or number in a file. The contents are in sorted order (obviously). Since I want to run a binary search on the file, it seems like a real waste ...
最好、最小、最快、开放的来源、C/C++ 3d 提供方(在3ds max模型的支持下),而不是通用公平市价,
Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...
I m trying to find the source of a bug I have found in an open-source application. I have managed to get a build up and running on my Windows machine, but I m having trouble finding the spot in the ...
I wrote below code to readin line by line from stdin ex. city=Boston;city=New York;city=Chicago and then split each line by ; delimiter and print each record. Then in yet another loop I try to ...
I was wondering if there were any good free graphics libraries for C that are easy to use? It s for plotting 2d and 3d graphs and then saving to a file. It s on a Linux system and there s no gnuplot ...
Is there anything other than DDD that will draw diagrams of my data structures like DDD does that runs on Linux? ddd is okay and runs, just kind of has an old klunky feeling to it, just wanted to ...
Please note that this is not homework and i did search before starting this new thread. I got Store an int in a char array? I was looking for an answer but didn t get any satisfactory answer in the ...