diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-04-16 14:47:33 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-08-27 13:26:05 -0400 |
| commit | 7ff9eeca341ace0ba30599ee5ab195e9b0f44550 (patch) | |
| tree | d753ac355bb4b0fd5d2f6fb46ce2fd97043b031c /include | |
| parent | 015bb25d90b8867a1b6a882cc65cc28e3276c888 (diff) | |
kexec: allocate the kexec control page with KEXEC_CONTROL_MEMORY_GFP
[ Upstream commit 7e01b5acd88b3f3108d8c4ce44e3205d67437202 ]
Introduce KEXEC_CONTROL_MEMORY_GFP to allow the architecture code
to override the gfp flags of the allocation for the kexec control
page. The loop in kimage_alloc_normal_control_pages allocates pages
with GFP_KERNEL until a page is found that happens to have an
address smaller than the KEXEC_CONTROL_MEMORY_LIMIT. On systems
with a large memory size but a small KEXEC_CONTROL_MEMORY_LIMIT
the loop will keep allocating memory until the oom killer steps in.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kexec.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 9d957b7ae095..9739607a6dfb 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -27,6 +27,10 @@ #error KEXEC_CONTROL_MEMORY_LIMIT not defined #endif +#ifndef KEXEC_CONTROL_MEMORY_GFP +#define KEXEC_CONTROL_MEMORY_GFP GFP_KERNEL +#endif + #ifndef KEXEC_CONTROL_PAGE_SIZE #error KEXEC_CONTROL_PAGE_SIZE not defined #endif |