From: Cliff Wickman <[email protected]> If there is plenty of memory use non-cyclic mode.
Diffed against makedumpfile-1.5.4 Signed-off-by: Cliff Wickman <[email protected]> --- makedumpfile.c | 26 ++++++++++++++++++++++++++ Index: makedumpfile-1.5.4/makedumpfile.c =================================================================== --- makedumpfile-1.5.4.orig/makedumpfile.c +++ makedumpfile-1.5.4/makedumpfile.c @@ -7638,6 +7638,23 @@ writeout_multiple_dumpfiles(void) return ret; } +/* + * Plenty of memory to do a non-cyclic dump. + * Default to non-cyclic in this case. + */ +static int +plenty_of_memory(void) +{ + unsigned long free_size; + unsigned long needed_size; + + free_size = get_free_memory_size(); + needed_size = (info->max_mapnr * 2) / BITPERBYTE; + if (free_size > (needed_size + (10*1024*1024))) + return 1; + return 0; +} + int create_dumpfile(void) { @@ -7655,6 +7672,15 @@ create_dumpfile(void) print_vtop(); + if (plenty_of_memory()) { + if (info->flag_cyclic == TRUE) + MSG("Plenty of memory; using non-cyclic mode.\n"); + info->flag_cyclic = FALSE; + } else { + if (info->flag_cyclic == TRUE) + MSG("Restricted memory; staying in cyclic mode.\n"); + } + num_retry = 0; retry: if (info->flag_refiltering) { _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
