freebsd-dev/sys/modules/linux/Makefile

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1999-08-28 01:08:13 +00:00
# $FreeBSD$
.if ${MACHINE_CPUARCH} == "amd64"
SFX= 32
CFLAGS+=-DCOMPAT_FREEBSD32 -DCOMPAT_LINUX32
.endif
.PATH: ${.CURDIR}/../../compat/linux ${.CURDIR}/../../${MACHINE_CPUARCH}/linux${SFX}
KMOD= linux
SRCS= linux${SFX}_dummy.c linux_emul.c linux_file.c \
MFP4 (with some minor changes): Implement the linux_io_* syscalls (AIO). They are only enabled if the native AIO code is available (either compiled in to the kernel or as a module) at the time the functions are used. If the AIO stuff is not available there will be a ENOSYS. From the submitter: ---snip--- DESIGN NOTES: 1. Linux permits a process to own multiple AIO queues (distinguished by "context"), but FreeBSD creates only one single AIO queue per process. My code maintains a request queue (STAILQ of queue(3)) per "context", and throws all AIO requests of all contexts owned by a process into the single FreeBSD per-process AIO queue. When the process calls io_destroy(2), io_getevents(2), io_submit(2) and io_cancel(2), my code can pick out requests owned by the specified context from the single FreeBSD per-process AIO queue according to the per-context request queues maintained by my code. 2. The request queue maintained by my code stores contrast information between Linux IO control blocks (struct linux_iocb) and FreeBSD IO control blocks (struct aiocb). FreeBSD IO control block actually exists in userland memory space, required by FreeBSD native aio_XXXXXX(2). 3. It is quite troubling that the function io_getevents() of libaio-0.3.105 needs to use Linux-specific "struct aio_ring", which is a partial mirror of context in user space. I would rather take the address of context in kernel as the context ID, but the io_getevents() of libaio forces me to take the address of the "ring" in user space as the context ID. To my surprise, one comment line in the file "io_getevents.c" of libaio-0.3.105 reads: Ben will hate me for this REFERENCE: 1. Linux kernel source code: http://www.kernel.org/pub/linux/kernel/v2.6/ (include/linux/aio_abi.h, fs/aio.c) 2. Linux manual pages: http://www.kernel.org/pub/linux/docs/manpages/ (io_setup(2), io_destroy(2), io_getevents(2), io_submit(2), io_cancel(2)) 3. Linux Scalability Effort: http://lse.sourceforge.net/io/aio.html The design notes: http://lse.sourceforge.net/io/aionotes.txt 4. The package libaio, both source and binary: http://rpmfind.net/linux/rpm2html/search.php?query=libaio Simple transparent interface to Linux AIO system calls. 5. Libaio-oracle: http://oss.oracle.com/projects/libaio-oracle/ POSIX AIO implementation based on Linux AIO system calls (depending on libaio). ---snip--- Submitted by: Li, Xiao <intron@intron.ac>
2006-10-15 14:22:14 +00:00
linux_futex.c linux_getcwd.c linux_ioctl.c linux_ipc.c \
linux${SFX}_machdep.c linux_mib.c linux_misc.c linux_signal.c \
linux_socket.c linux_stats.c linux_sysctl.c linux${SFX}_sysent.c \
linux${SFX}_sysvec.c linux_uid16.c linux_util.c linux_time.c \
opt_inet6.h opt_compat.h opt_posix.h opt_usb.h vnode_if.h \
device_if.h bus_if.h assym.s
# XXX: for assym.s
SRCS+= opt_kstack_pages.h opt_nfs.h opt_compat.h opt_hwpmc_hooks.h
.if ${MACHINE_CPUARCH} == "i386"
SRCS+= opt_apic.h
.endif
OBJS= linux${SFX}_locore.o linux${SFX}_support.o
.if ${MACHINE_CPUARCH} == "i386"
SRCS+= linux_ptrace.c imgact_linux.c opt_cpu.h
.endif
EXPORT_SYMS=
EXPORT_SYMS+= linux_emul_path
EXPORT_SYMS+= linux_get_osname
EXPORT_SYMS+= linux_get_osrelease
EXPORT_SYMS+= linux_ifname
EXPORT_SYMS+= linux_ioctl_register_handler
EXPORT_SYMS+= linux_ioctl_unregister_handler
CLEANFILES= linux${SFX}_assym.h linux${SFX}_genassym.o
linux${SFX}_assym.h: linux${SFX}_genassym.o
.if exists(@)
linux${SFX}_assym.h: @/kern/genassym.sh
.endif
sh @/kern/genassym.sh linux${SFX}_genassym.o > ${.TARGET}
linux${SFX}_locore.o: linux${SFX}_locore.s linux${SFX}_assym.h
${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
${.IMPSRC} -o ${.TARGET}
linux${SFX}_support.o: linux${SFX}_support.s assym.s linux${SFX}_assym.h
${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
${.IMPSRC} -o ${.TARGET}
linux${SFX}_genassym.o: linux${SFX}_genassym.c linux.h @ machine
${CC} -c ${CFLAGS:N-fno-common} ${.IMPSRC}
.if !defined(KERNBUILDDIR)
opt_inet6.h:
echo "#define INET6 1" > ${.TARGET}
.if defined(KTR)
CFLAGS+= -DKTR
.endif
.endif
.include <bsd.kmod.mk>