This patch set intend to exclude unnecessary hugepages from vmcore dump file. This patch requires the kernel patch to export necessary data structures into vmcore: "kexec: export hugepage data structure into vmcoreinfo" http://lists.infradead.org/pipermail/kexec/2013-November/009997.html This patch introduce two new dump levels 32 and 64 to exclude all unused and active hugepages. The level to exclude all unnecessary pages will be 127 now. | cache cache free active Dump | zero without with user free huge huge Level | page private private data page page page -------+---------------------------------------------------------- 0 | 1 | X 2 | X 4 | X X 8 | X 16 | X 32 | X 64 | X X 127 | X X X X X X X example: To exclude all unnecessary pages: makedumpfile -c --message-level 23 -d 127 /proc/vmcore /var/crash/kdump To exclude all unnecessary pages but keep active hugepages: makedumpfile -c --message-level 23 -d 63 /proc/vmcore /var/crash/kdump --- Jingbai Ma (3): makedumpfile: hugepage filtering: add hugepage filtering functions makedumpfile: hugepage filtering: add excluding hugepage messages makedumpfile: hugepage filtering: add new dump levels for manual page makedumpfile.8 | 170 +++++++++++++++++++++++++++-------- makedumpfile.c | 272 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ makedumpfile.h | 19 ++++ print_info.c | 12 +- print_info.h | 2 5 files changed, 431 insertions(+), 44 deletions(-) --
