Messages in this thread | | | From | Real Name <> | Subject | [PATCH v2] delete unnecessary bootmem struct page array | Date | Tue, 3 Jun 2014 13:30:44 +0800 |
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From: Honggang Li <enjoymindful@gmail.com>
The patch based on linux-next-2014-06-02.
The old init_maps function does two things: 1) allocates and initializes one struct page array for bootmem 2) count the number of total pages
After removed the source code related to the unnecessary array, the name 'init_maps' is some kind of improper named, as it just count the number of total page numbers. So, I renamed the function as 'mem_total_pages'.
I tested the patch through repeat reboot the uml kernel many times. [real@name linux-next]$ make ARCH=um defconfig [real@name linux-next]$ make ARCH=um linux [real@name linux-next]$ file linux linux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not stripped [real@name linux-next]$ ./linux ubda=/home/real/linux-next/Fedora20-AMD64-root_fs mem=256m && sync && echo 1 [real@name linux-next]$ ./linux ubda=/home/real/linux-next/Fedora20-AMD64-root_fs mem=256m && sync && echo 2 (repeat reboot the uml kernel many times..)
Honggang Li (1): delete unnecessary bootmem struct page array
arch/um/include/shared/mem_user.h | 2 +- arch/um/kernel/physmem.c | 32 ++++++-------------------------- arch/um/kernel/um_arch.c | 7 +------ 3 files changed, 8 insertions(+), 33 deletions(-)
-- 1.8.3.1
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