On Mon, Nov 09 2015, Joonsoo Kim wrote: > Success of CMA allocation largely depends on success of migration > and key factor of it is page reference count. Until now, page reference > is manipulated by direct calling atomic functions so we cannot follow up > who and where manipulate it. Then, it is hard to find actual reason > of CMA allocation failure. CMA allocation should be guaranteed to succeed > so finding offending place is really important. > > In this patch, call sites where page reference is manipulated are converted > to introduced wrapper function. This is preparation step to add tracepoint > to each page reference manipulation function. With this facility, we can > easily find reason of CMA allocation failure. There is no functional change > in this patch. > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx> > --- > arch/mips/mm/gup.c | 2 +- > arch/powerpc/mm/mmu_context_hash64.c | 3 +- > arch/powerpc/mm/pgtable_64.c | 2 +- > arch/x86/mm/gup.c | 2 +- > drivers/block/aoe/aoecmd.c | 4 +- > drivers/net/ethernet/freescale/gianfar.c | 2 +- > drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 +- > drivers/net/ethernet/intel/igb/igb_main.c | 2 +- > drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +- > drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +- > drivers/net/ethernet/mellanox/mlx4/en_rx.c | 7 +-- > drivers/net/ethernet/sun/niu.c | 2 +- > include/linux/mm.h | 21 ++----- > include/linux/page_ref.h | 76 +++++++++++++++++++++++ > include/linux/pagemap.h | 19 +----- > mm/huge_memory.c | 6 +- > mm/internal.h | 5 -- > mm/memory_hotplug.c | 4 +- > mm/migrate.c | 10 +-- > mm/page_alloc.c | 6 +- > mm/vmscan.c | 6 +- > 21 files changed, 114 insertions(+), 71 deletions(-) > create mode 100644 include/linux/page_ref.h > -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, ミハウ “mina86” ナザレヴイツ (o o) ooo +--<mpn@xxxxxxxxxx>--<xmpp:mina86@xxxxxxxxxx>-----ooO--(_)--Ooo-- -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
