The patch titled Subject: mm: init: report on last-nid information stored in page->flags has been removed from the -mm tree. Its filename was mm-init-report-on-last-nid-information-stored-in-page-flags.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Mel Gorman <mgorman@xxxxxxx> Subject: mm: init: report on last-nid information stored in page->flags Answering the question "how much space remains in the page->flags" is time-consuming. mminit_loglevel can help answer the question but it does not take last_nid information into account. This patch corrects it and while there it corrects the messages related to page flag usage, pgshifts and node/zone id. When applied the relevant output looks something like this but will depend on the kernel configuration. [ 0.000000] mminit::pageflags_layout_widths Section 0 Node 9 Zone 2 Lastnid 9 Flags 25 [ 0.000000] mminit::pageflags_layout_shifts Section 19 Node 9 Zone 2 Lastnid 9 [ 0.000000] mminit::pageflags_layout_pgshifts Section 0 Node 55 Zone 53 Lastnid 44 [ 0.000000] mminit::pageflags_layout_nodezoneid Node/Zone ID: 64 -> 53 [ 0.000000] mminit::pageflags_layout_usage location: 64 -> 44 layout 44 -> 25 unused 25 -> 0 page-flags Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/mm_init.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff -puN mm/mm_init.c~mm-init-report-on-last-nid-information-stored-in-page-flags mm/mm_init.c --- a/mm/mm_init.c~mm-init-report-on-last-nid-information-stored-in-page-flags +++ a/mm/mm_init.c @@ -69,34 +69,41 @@ void __init mminit_verify_pageflags_layo unsigned long or_mask, add_mask; shift = 8 * sizeof(unsigned long); - width = shift - SECTIONS_WIDTH - NODES_WIDTH - ZONES_WIDTH; + width = shift - SECTIONS_WIDTH - NODES_WIDTH - ZONES_WIDTH - LAST_NID_SHIFT; mminit_dprintk(MMINIT_TRACE, "pageflags_layout_widths", - "Section %d Node %d Zone %d Flags %d\n", + "Section %d Node %d Zone %d Lastnid %d Flags %d\n", SECTIONS_WIDTH, NODES_WIDTH, ZONES_WIDTH, + LAST_NID_WIDTH, NR_PAGEFLAGS); mminit_dprintk(MMINIT_TRACE, "pageflags_layout_shifts", - "Section %d Node %d Zone %d\n", + "Section %d Node %d Zone %d Lastnid %d\n", SECTIONS_SHIFT, NODES_SHIFT, - ZONES_SHIFT); - mminit_dprintk(MMINIT_TRACE, "pageflags_layout_offsets", - "Section %lu Node %lu Zone %lu\n", + ZONES_SHIFT, + LAST_NID_SHIFT); + mminit_dprintk(MMINIT_TRACE, "pageflags_layout_pgshifts", + "Section %lu Node %lu Zone %lu Lastnid %lu\n", (unsigned long)SECTIONS_PGSHIFT, (unsigned long)NODES_PGSHIFT, - (unsigned long)ZONES_PGSHIFT); - mminit_dprintk(MMINIT_TRACE, "pageflags_layout_zoneid", - "Zone ID: %lu -> %lu\n", - (unsigned long)ZONEID_PGOFF, - (unsigned long)(ZONEID_PGOFF + ZONEID_SHIFT)); + (unsigned long)ZONES_PGSHIFT, + (unsigned long)LAST_NID_PGSHIFT); + mminit_dprintk(MMINIT_TRACE, "pageflags_layout_nodezoneid", + "Node/Zone ID: %lu -> %lu\n", + (unsigned long)(ZONEID_PGOFF + ZONEID_SHIFT), + (unsigned long)ZONEID_PGOFF); mminit_dprintk(MMINIT_TRACE, "pageflags_layout_usage", - "location: %d -> %d unused %d -> %d flags %d -> %d\n", + "location: %d -> %d layout %d -> %d unused %d -> %d page-flags\n", shift, width, width, NR_PAGEFLAGS, NR_PAGEFLAGS, 0); #ifdef NODE_NOT_IN_PAGE_FLAGS mminit_dprintk(MMINIT_TRACE, "pageflags_layout_nodeflags", "Node not in page flags"); #endif +#ifdef LAST_NID_NOT_IN_PAGE_FLAGS + mminit_dprintk(MMINIT_TRACE, "pageflags_layout_nodeflags", + "Last nid not in page flags"); +#endif if (SECTIONS_WIDTH) { shift -= SECTIONS_WIDTH; _ Patches currently in -mm which might be from mgorman@xxxxxxx are origin.patch linux-next.patch revert-x86-mm-make-spurious_fault-check-explicitly-check-the-present-bit.patch pageattr-prevent-pse-and-gloabl-leftovers-to-confuse-pmd-pte_present-and-pmd_huge.patch mm-memmap_init_zone-performance-improvement.patch mm-accelerate-munlock-treatment-of-thp-pages.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html