diff options
| author | Russell King <rmk@arm.linux.org.uk> | 2016-06-06 17:59:34 +0100 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2016-06-08 09:21:52 +0900 |
| commit | ba1e37a8ede8d7d981c677ef7273e01aec88da7f (patch) | |
| tree | 90051aca17ae86831fad793022f1b3866c3bc93a | |
| parent | 8d8d2229a3afe6323a737c42c25a101ea104efbe (diff) | |
kexec: add generic helper to add to memory_regions
Add a helper to add a memory range to a memory_regions array.
Reviewed-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Simon Horman <horms@verge.net.au>
| -rw-r--r-- | kexec/Makefile | 4 | ||||
| -rw-r--r-- | kexec/mem_regions.c | 29 | ||||
| -rw-r--r-- | kexec/mem_regions.h | 9 |
3 files changed, 42 insertions, 0 deletions
diff --git a/kexec/Makefile b/kexec/Makefile index a758b4a..e2aee84 100644 --- a/kexec/Makefile +++ b/kexec/Makefile @@ -69,6 +69,10 @@ dist += kexec/fs2dt.c kexec/fs2dt.h $(ARCH)_FS2DT = KEXEC_SRCS += $($(ARCH)_FS2DT) +dist += kexec/mem_regions.c kexec/mem_regions.h +$(ARCH)_MEM_REGIONS = +KEXEC_SRCS += $($(ARCH)_MEM_REGIONS) + include $(srcdir)/kexec/arch/alpha/Makefile include $(srcdir)/kexec/arch/arm/Makefile include $(srcdir)/kexec/arch/i386/Makefile diff --git a/kexec/mem_regions.c b/kexec/mem_regions.c new file mode 100644 index 0000000..4425b86 --- /dev/null +++ b/kexec/mem_regions.c @@ -0,0 +1,29 @@ +#include "kexec.h" +#include "mem_regions.h" + +/** + * mem_regions_add() - add a memory region to a set of ranges + * @ranges: ranges to add the memory region to + * @max: maximum number of entries in memory region + * @base: base address of memory region + * @length: length of memory region in bytes + * @type: type of memory region + * + * Add the memory region to the set of ranges, and return %0 if successful, + * or %-1 if we ran out of space. + */ +int mem_regions_add(struct memory_ranges *ranges, unsigned long long base, + unsigned long long length, int type) +{ + struct memory_range *range; + + if (ranges->size >= ranges->max_size) + return -1; + + range = ranges->ranges + ranges->size++; + range->start = base; + range->end = base + length - 1; + range->type = type; + + return 0; +} diff --git a/kexec/mem_regions.h b/kexec/mem_regions.h new file mode 100644 index 0000000..b9cfba1 --- /dev/null +++ b/kexec/mem_regions.h @@ -0,0 +1,9 @@ +#ifndef MEM_REGIONS_H +#define MEM_REGIONS_H + +struct memory_ranges; + +int mem_regions_add(struct memory_ranges *ranges, unsigned long long base, + unsigned long long length, int type); + +#endif |