From: Real Name <enjoymindful@gmail.com>
To: user-mode-linux-devel@lists.sourceforge.net
Cc: richard@nod.at, linux-kernel@vger.kernel.org
Subject: [uml-devel] [PATCH v2] delete unnecessary bootmem struct page array
Date: Tue, 3 Jun 2014 13:30:44 +0800 [thread overview]
Message-ID: <1401773445-25256-1-git-send-email-enjoymindful@gmail.com> (raw)
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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next reply other threads:[~2014-06-03 5:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-03 5:30 Real Name [this message]
2014-06-03 5:30 ` [uml-devel] [PATCH] delete unnecessary bootmem struct page array Real Name
2014-06-09 5:49 ` [PATCH v2] " Real Name
2014-06-09 8:59 ` [uml-devel] " Toralf Förster
2014-06-14 9:44 ` Richard Weinberger
2014-06-16 3:28 ` [uml-devel] " Real Name
2014-06-16 6:50 ` Richard Weinberger
2014-06-16 8:12 ` Real Name
2014-06-16 8:28 ` Real Name
2014-06-16 9:15 ` Geert Uytterhoeven
2014-06-16 10:30 ` Real Name
2014-07-17 23:10 ` Real Name
2014-06-16 6:58 ` [uml-devel] " Geert Uytterhoeven
2014-06-16 7:21 ` Paul Bolle
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