Messages in this thread Patch in this message | | | From | Baoquan He <> | Subject | [PATCH 1/2] take the segment adding out of locate_mem_hole functions | Date | Tue, 12 Aug 2014 13:29:27 +0800 |
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In locate_mem_hole functions, a memory hole is located and added as kexec_segment. But from the name of locate_mem_hole, it should only take responsibility of searching a available memory hole to contain data of a specified size.
So in this patch add a new field 'mem' into kexec_buf, then take that kexec segment adding code out of locate_mem_hole_top_down and locate_mem_hole_bottom_up. This make clear of the functionality of locate_mem_hole just like it declars to do. And by this locate_mem_hole_callback chould be used later if anyone want to locate a memory hole for other use.
Signed-off-by: Baoquan He <bhe@redhat.com> --- include/linux/kexec.h | 1 + kernel/kexec.c | 9 +++++---- 2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 4b2a0e1..9d957b7 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -178,6 +178,7 @@ struct kexec_buf { struct kimage *image; char *buffer; unsigned long bufsz; + unsigned long mem; unsigned long memsz; unsigned long buf_align; unsigned long buf_min; diff --git a/kernel/kexec.c b/kernel/kexec.c index 0b49a0a..586444e 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -2054,8 +2054,7 @@ static int locate_mem_hole_top_down(unsigned long start, unsigned long end, } while (1); /* If we are here, we found a suitable memory range */ - __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, temp_start, - kbuf->memsz); + kbuf->mem = temp_start; /* Success, stop navigating through remaining System RAM ranges */ return 1; @@ -2089,8 +2088,7 @@ static int locate_mem_hole_bottom_up(unsigned long start, unsigned long end, } while (1); /* If we are here, we found a suitable memory range */ - __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, temp_start, - kbuf->memsz); + kbuf->mem = temp_start; /* Success, stop navigating through remaining System RAM ranges */ return 1; @@ -2176,6 +2174,9 @@ int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz, return -EADDRNOTAVAIL; } + __kexec_add_segment(image, kbuf->buffer, kbuf->bufsz, kbuf->mem, + kbuf->memsz); + /* Found a suitable memory range */ ksegment = &image->segment[image->nr_segments - 1]; *load_addr = ksegment->mem; -- 1.8.5.3
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