Use --block-size to specify block size (KB) When --split is specified in cyclic mode,block table will be generated in get_num_dumpable_cyclic.
Signed-off-by: Qiao Nuohan <[email protected]> Signed-off-by: Zhou Wenjian <[email protected]> --- makedumpfile.8 | 16 ++++++++++++++++ makedumpfile.c | 4 ++++ makedumpfile.h | 1 + 3 files changed, 21 insertions(+), 0 deletions(-) diff --git a/makedumpfile.8 b/makedumpfile.8 index 9cb12c0..a384213 100644 --- a/makedumpfile.8 +++ b/makedumpfile.8 @@ -386,6 +386,22 @@ size, so ordinary users don't need to specify this option. # makedumpfile \-\-cyclic\-buffer 1024 \-d 31 \-x vmlinux /proc/vmcore dumpfile .TP +\fB\-\-block\-size\fR \fIblock_size\fR +Specify the block size in kilo bytes for analysis in the cyclic mode with --split. +In the cyclic split mode, the number of blocks is represented as: + + num_of_blocks = system_memory / (\fIblock_size\fR * 1KB ) + +The larger number of block, the faster working speed is expected, but the more memory will +be taken. By default, \fIblock_size\fR will be set as 1GB, so ordinary users don't need to +specify this option. + +.br +.B Example: +.br +# makedumpfile \-\-block\-size 10240 \-d 31 \-x vmlinux \-\-split /proc/vmcore dumpfile1 dumpfile2 + +.TP \fB\-\-non\-cyclic\fR Running in the non-cyclic mode, this mode uses the old filtering logic same as v1.4.4 or before. If you feel the cyclic mode is too slow, please try this mode. diff --git a/makedumpfile.c b/makedumpfile.c index 3e66346..405d935 100644 --- a/makedumpfile.c +++ b/makedumpfile.c @@ -9571,6 +9571,7 @@ static struct option longopts[] = { {"eppic", required_argument, NULL, OPT_EPPIC}, {"non-mmap", no_argument, NULL, OPT_NON_MMAP}, {"mem-usage", no_argument, NULL, OPT_MEM_USAGE}, + {"block-size", required_argument, NULL, OPT_BLOCK_SIZE}, {0, 0, 0, 0} }; @@ -9711,6 +9712,9 @@ main(int argc, char *argv[]) case OPT_CYCLIC_BUFFER: info->bufsize_cyclic = atoi(optarg); break; + case OPT_BLOCK_SIZE: + info->block_size = atoi(optarg); + break; case '?': MSG("Commandline parameter is invalid.\n"); MSG("Try `makedumpfile --help' for more information.\n"); diff --git a/makedumpfile.h b/makedumpfile.h index ed4f799..56d2c79 100644 --- a/makedumpfile.h +++ b/makedumpfile.h @@ -1883,6 +1883,7 @@ struct elf_prstatus { #define OPT_EPPIC OPT_START+12 #define OPT_NON_MMAP OPT_START+13 #define OPT_MEM_USAGE OPT_START+14 +#define OPT_BLOCK_SIZE OPT_START+15 /* * Function Prototype. -- 1.7.1 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
