LD.HUGETLBFS(1)

NAME
ld.hugetlbfs - link a program for huge pages

SYNOPSIS
ld.hugetlbfs [options]

DESCRIPTION

ld.hugetlbfs replaces the normal ld command for linking programs to use hugepages. Under gcc, you should use the option -B /usr/share/libhugetlbfs which tells gcc to look in a non-standard location for the linker. This could be set in the CFLAGS environment variable.

-Wl,--hugetlbfs-align

    This method of linking an application permits greater flexibility at runtime. Using HUGETLB_ELFMAP, it is possible to control which program segments are placed in hugepages. The following four settings will cause the indicated segments to be placed in hugepages:

            HUGETLB_ELFMAP=R Read-only segments (text)
            HUGETLB_ELFMAP=W Writable segments (data/BSS)
            HUGETLB_ELFMAP=RW All segments (text/data/BSS)
            HUGETLB_ELFMAP=no No segments

    It is possible to select specific huge page sizes for read-only and writable segments by using the following advanced syntax:

            HUGETLB_ELFMAP=[R[=<pagesize>]:[W[=<pagesize>]]

    -Wl,--hugetlbfs-link=B

    Under binutils 2.16 or older, this option will link the application to store BSS data (only) into hugepages.

    -Wl,--hugetlbfs-link=BDT

    Under binutils 2.16 or older, this option will link the application to store text, initialized data and BSS data into hugepages.

FILES
[DESTDIR|/usr/share]/doc/libhugetlbfs/HOWTO

SEE ALSO
libhugetlbfs(7), hugectl(8), hugeedit(8)

AUTHORS
libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.