LD.HUGETLBFS - Online Linux Manual PageSection : 1
Updated : March 12, 2012
NAMEld.hugetlbfs − link a program for huge pages
SYNOPSISld.hugetlbfs [options]
DESCRIPTIONld.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 ALSOlibhugetlbfs(7), hugectl(8), hugeedit(8)
AUTHORSlibhugetlbfs was written by various people on the libhugetlbfs-devel mailing list. 0
Johanes Gumabo
Data Size : 5,581 byte
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