6a1162d4cd
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>
277 lines
11 KiB
Plaintext
277 lines
11 KiB
Plaintext
# This file tells config what files go into building a kernel,
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# files marked standard are always included.
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#
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# $FreeBSD$
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#
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# The long compile-with and dependency lines are required because of
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# limitations in config: backslash-newline doesn't work in strings, and
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# dependency lines other than the first are silently ignored.
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#
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#
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linux32_genassym.o optional compat_linux32 \
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dependency "$S/amd64/linux32/linux32_genassym.c" \
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compile-with "${CC} ${CFLAGS:N-fno-common} -c ${.IMPSRC}" \
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no-obj no-implicit-rule \
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clean "linux32_genassym.o"
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#
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linux32_assym.h optional compat_linux32 \
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dependency "$S/kern/genassym.sh linux32_genassym.o" \
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compile-with "sh $S/kern/genassym.sh linux32_genassym.o > ${.TARGET}" \
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no-obj no-implicit-rule before-depend \
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clean "linux32_assym.h"
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#
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ia32_genassym.o standard \
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dependency "$S/compat/ia32/ia32_genassym.c" \
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compile-with "${CC} ${CFLAGS:N-fno-common} -c ${.IMPSRC}" \
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no-obj no-implicit-rule \
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clean "ia32_genassym.o"
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#
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ia32_assym.h standard \
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dependency "$S/kern/genassym.sh ia32_genassym.o" \
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compile-with "env NM='${NM}' sh $S/kern/genassym.sh ia32_genassym.o > ${.TARGET}" \
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no-obj no-implicit-rule before-depend \
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clean "ia32_assym.h"
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#
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font.h optional sc_dflt_font \
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compile-with "uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x16.fnt && file2c 'static u_char dflt_font_16[16*256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x14.fnt && file2c 'static u_char dflt_font_14[14*256] = {' '};' < ${SC_DFLT_FONT}-8x14 >> font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x8.fnt && file2c 'static u_char dflt_font_8[8*256] = {' '};' < ${SC_DFLT_FONT}-8x8 >> font.h" \
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no-obj no-implicit-rule before-depend \
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clean "font.h ${SC_DFLT_FONT}-8x14 ${SC_DFLT_FONT}-8x16 ${SC_DFLT_FONT}-8x8"
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#
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atkbdmap.h optional atkbd_dflt_keymap \
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compile-with "/usr/sbin/kbdcontrol -L ${ATKBD_DFLT_KEYMAP} | sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' > atkbdmap.h" \
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no-obj no-implicit-rule before-depend \
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clean "atkbdmap.h"
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#
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ukbdmap.h optional ukbd_dflt_keymap \
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compile-with "/usr/sbin/kbdcontrol -L ${UKBD_DFLT_KEYMAP} | sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' > ukbdmap.h" \
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no-obj no-implicit-rule before-depend \
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clean "ukbdmap.h"
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#
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hal.o optional ath_hal \
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dependency "$S/contrib/dev/ath/public/x86_64-elf.hal.o.uu" \
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compile-with "uudecode < $S/contrib/dev/ath/public/x86_64-elf.hal.o.uu" \
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no-implicit-rule
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opt_ah.h optional ath_hal \
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dependency "$S/contrib/dev/ath/public/x86_64-elf.opt_ah.h" \
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compile-with "cp $S/contrib/dev/ath/public/x86_64-elf.opt_ah.h opt_ah.h" \
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no-obj no-implicit-rule before-depend \
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clean "opt_ah.h"
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#
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nvenetlib.o optional nve pci \
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dependency "$S/contrib/dev/nve/amd64/nvenetlib.o.bz2.uu" \
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compile-with "uudecode $S/contrib/dev/nve/amd64/nvenetlib.o.bz2.uu ; bzip2 -df nvenetlib.o.bz2" \
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no-implicit-rule
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#
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os+%DIKED-nve.h optional nve pci \
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dependency "$S/contrib/dev/nve/os.h" \
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compile-with "sed -e 's/^.*#include.*phy\.h.*$$//' $S/contrib/dev/nve/os.h > os+%DIKED-nve.h" \
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no-implicit-rule no-obj before-depend \
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clean "os+%DIKED-nve.h"
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#
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hptmvraid.o optional hptmv \
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dependency "$S/dev/hptmv/amd64-elf.raid.o.uu" \
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compile-with "uudecode < $S/dev/hptmv/amd64-elf.raid.o.uu" \
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no-implicit-rule
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rr232x_lib.o optional rr232x \
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dependency "$S/dev/rr232x/amd64-elf.rr232x_lib.o.uu" \
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compile-with "uudecode < $S/dev/rr232x/amd64-elf.rr232x_lib.o.uu" \
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no-implicit-rule
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#
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amd64/acpica/OsdEnvironment.c optional acpi
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amd64/acpica/acpi_machdep.c optional acpi
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amd64/acpica/acpi_wakeup.c optional acpi
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amd64/acpica/madt.c optional acpi
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amd64/amd64/amd64_mem.c optional mem
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#amd64/amd64/apic_vector.S standard
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amd64/amd64/atomic.c standard
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amd64/amd64/autoconf.c standard
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amd64/amd64/bios.c standard
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amd64/amd64/bpf_jit_machdep.c optional bpf_jitter
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amd64/amd64/busdma_machdep.c standard
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amd64/amd64/cpu_switch.S standard
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amd64/amd64/db_disasm.c optional ddb
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amd64/amd64/db_interface.c optional ddb
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amd64/amd64/db_trace.c optional ddb
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amd64/amd64/dump_machdep.c standard
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amd64/amd64/elf_machdep.c standard
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amd64/amd64/exception.S standard
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amd64/amd64/fpu.c standard
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amd64/amd64/gdb_machdep.c optional gdb
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amd64/amd64/identcpu.c standard
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amd64/amd64/in_cksum.c optional inet
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amd64/amd64/initcpu.c standard
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amd64/amd64/intr_machdep.c standard
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amd64/amd64/io.c optional io
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amd64/amd64/io_apic.c standard
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amd64/amd64/legacy.c standard
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amd64/amd64/local_apic.c standard
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amd64/amd64/locore.S standard no-obj
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amd64/amd64/machdep.c standard
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amd64/amd64/mem.c optional mem
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amd64/amd64/minidump_machdep.c standard
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amd64/amd64/mp_machdep.c optional smp
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amd64/amd64/mp_watchdog.c optional mp_watchdog smp
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amd64/amd64/mpboot.S optional smp
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amd64/amd64/mptable.c optional mptable
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amd64/amd64/mptable_pci.c optional mptable pci
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amd64/amd64/nexus.c standard
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amd64/amd64/pmap.c standard
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amd64/amd64/prof_machdep.c optional profiling-routine
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amd64/amd64/sigtramp.S standard
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amd64/amd64/support.S standard
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amd64/amd64/sys_machdep.c standard
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amd64/amd64/trap.c standard
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amd64/amd64/tsc.c standard
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amd64/amd64/uio_machdep.c standard
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amd64/amd64/uma_machdep.c standard
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amd64/amd64/vm_machdep.c standard
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amd64/isa/atpic.c optional atpic isa
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#amd64/isa/atpic_vector.S optional atpic isa
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amd64/isa/clock.c standard
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amd64/isa/elcr.c standard
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amd64/isa/isa.c standard
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amd64/isa/isa_dma.c standard
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amd64/isa/nmi.c standard
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amd64/pci/pci_bus.c optional pci
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amd64/pci/pci_cfgreg.c optional pci
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crypto/blowfish/bf_enc.c optional crypto | ipsec ipsec_esp
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crypto/des/des_enc.c optional crypto | ipsec ipsec_esp | \
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netsmb
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dev/acpica/acpi_if.m standard
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dev/arcmsr/arcmsr.c optional arcmsr pci
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dev/atkbdc/atkbd.c optional atkbd atkbdc
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dev/atkbdc/atkbd_atkbdc.c optional atkbd atkbdc
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dev/atkbdc/atkbdc.c optional atkbdc
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dev/atkbdc/atkbdc_isa.c optional atkbdc isa
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dev/atkbdc/atkbdc_subr.c optional atkbdc
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dev/atkbdc/psm.c optional psm atkbdc
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# There are no systems with isa slots, so all ed isa entries should go..
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dev/ed/if_ed_3c503.c optional ed isa ed_3c503
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dev/ed/if_ed_isa.c optional ed isa
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dev/ed/if_ed_wd80x3.c optional ed isa
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dev/ed/if_ed_hpp.c optional ed isa ed_hpp
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dev/ed/if_ed_sic.c optional ed isa ed_sic
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dev/fb/fb.c optional fb | vga
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dev/fb/splash.c optional splash
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dev/fb/vga.c optional vga
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dev/ichwd/ichwd.c optional ichwd
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dev/if_ndis/if_ndis.c optional ndis
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dev/if_ndis/if_ndis_pccard.c optional ndis pccard
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dev/if_ndis/if_ndis_pci.c optional ndis cardbus | ndis pci
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dev/if_ndis/if_ndis_usb.c optional ndis usb
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dev/io/iodev.c optional io
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dev/ipmi/ipmi.c optional ipmi
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dev/ipmi/ipmi_acpi.c optional ipmi acpi
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dev/ipmi/ipmi_isa.c optional ipmi isa
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dev/ipmi/ipmi_kcs.c optional ipmi
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dev/ipmi/ipmi_smic.c optional ipmi
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dev/ipmi/ipmi_smbus.c optional ipmi smbus
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dev/ipmi/ipmi_smbios.c optional ipmi
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dev/ipmi/ipmi_ssif.c optional ipmi smbus
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dev/ipmi/ipmi_pci.c optional ipmi pci
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dev/fdc/fdc.c optional fdc
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dev/fdc/fdc_acpi.c optional fdc
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dev/fdc/fdc_isa.c optional fdc isa
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dev/fdc/fdc_pccard.c optional fdc pccard
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dev/hptmv/entry.c optional hptmv
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dev/hptmv/mv.c optional hptmv
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dev/hptmv/gui_lib.c optional hptmv
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dev/hptmv/hptproc.c optional hptmv
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dev/hptmv/ioctl.c optional hptmv
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dev/hwpmc/hwpmc_amd.c optional hwpmc
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dev/hwpmc/hwpmc_piv.c optional hwpmc
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dev/hwpmc/hwpmc_x86.c optional hwpmc
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dev/kbd/kbd.c optional atkbd | sc | ukbd
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dev/mem/memutil.c optional mem
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dev/nfe/if_nfe.c optional nfe pci
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dev/nve/if_nve.c optional nve pci
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dev/rr232x/os_bsd.c optional rr232x
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dev/rr232x/osm_bsd.c optional rr232x
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dev/rr232x/rr232x_config.c optional rr232x
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dev/sio/sio.c optional sio
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dev/sio/sio_isa.c optional sio isa
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dev/sio/sio_pccard.c optional sio pccard
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dev/sio/sio_pci.c optional sio pci
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dev/sio/sio_puc.c optional sio puc
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dev/speaker/spkr.c optional speaker
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dev/syscons/apm/apm_saver.c optional apm_saver apm
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dev/syscons/schistory.c optional sc
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dev/syscons/scmouse.c optional sc
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dev/syscons/scterm-dumb.c optional sc
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dev/syscons/scterm-sc.c optional sc
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dev/syscons/scterm.c optional sc
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dev/syscons/scvgarndr.c optional sc vga
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dev/syscons/scvidctl.c optional sc
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dev/syscons/scvtb.c optional sc
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dev/syscons/syscons.c optional sc
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dev/syscons/sysmouse.c optional sc
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dev/uart/uart_cpu_amd64.c optional uart
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geom/geom_bsd.c standard
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geom/geom_bsd_enc.c standard
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geom/geom_mbr.c standard
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geom/geom_mbr_enc.c standard
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isa/syscons_isa.c optional sc
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isa/vga_isa.c optional vga
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kern/link_elf_obj.c standard
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pci/agp_amd64.c optional agp
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pci/agp_i810.c optional agp
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pci/agp_intel.c optional agp
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#
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# IA32 binary support
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#
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#amd64/ia32/ia32_exception.S optional compat_ia32
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amd64/ia32/ia32_reg.c optional compat_ia32
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amd64/ia32/ia32_signal.c optional compat_ia32
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amd64/ia32/ia32_sigtramp.S optional compat_ia32
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amd64/ia32/ia32_syscall.c optional compat_ia32
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compat/freebsd32/freebsd32_misc.c optional compat_ia32
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compat/freebsd32/freebsd32_syscalls.c optional compat_ia32
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compat/freebsd32/freebsd32_sysent.c optional compat_ia32
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compat/ia32/ia32_sysvec.c optional compat_ia32
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compat/linprocfs/linprocfs.c optional linprocfs
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compat/linsysfs/linsysfs.c optional linsysfs
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kern/imgact_elf32.c optional compat_ia32
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#
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# Linux/i386 binary support
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#
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amd64/linux32/linux32_dummy.c optional compat_linux32
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amd64/linux32/linux32_locore.s optional compat_linux32 \
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dependency "linux32_assym.h"
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amd64/linux32/linux32_machdep.c optional compat_linux32
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amd64/linux32/linux32_sysent.c optional compat_linux32
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amd64/linux32/linux32_sysvec.c optional compat_linux32
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compat/linux/linux_aio.c optional compat_linux32
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compat/linux/linux_emul.c optional compat_linux32
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compat/linux/linux_file.c optional compat_linux32
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compat/linux/linux_futex.c optional compat_linux32
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compat/linux/linux_getcwd.c optional compat_linux32
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compat/linux/linux_ioctl.c optional compat_linux32
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compat/linux/linux_ipc.c optional compat_linux32
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compat/linux/linux_mib.c optional compat_linux32
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compat/linux/linux_misc.c optional compat_linux32
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compat/linux/linux_signal.c optional compat_linux32
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compat/linux/linux_socket.c optional compat_linux32
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compat/linux/linux_stats.c optional compat_linux32
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compat/linux/linux_sysctl.c optional compat_linux32
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compat/linux/linux_time.c optional compat_linux32
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compat/linux/linux_uid16.c optional compat_linux32
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compat/linux/linux_util.c optional compat_linux32
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dev/amr/amr_linux.c optional compat_linux32 amr
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dev/mfi/mfi_linux.c optional compat_linux32 mfi
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#
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# Windows NDIS driver support
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#
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compat/ndis/kern_ndis.c optional ndisapi pci
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compat/ndis/kern_windrv.c optional ndisapi pci
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compat/ndis/subr_hal.c optional ndisapi pci
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compat/ndis/subr_ndis.c optional ndisapi pci
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compat/ndis/subr_ntoskrnl.c optional ndisapi pci
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compat/ndis/subr_pe.c optional ndisapi pci
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compat/ndis/subr_usbd.c optional ndisapi pci
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compat/ndis/winx64_wrap.S optional ndisapi pci
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i386/bios/smbios.c optional smbios
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i386/bios/vpd.c optional vpd
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i386/cpufreq/powernow.c optional cpufreq
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i386/cpufreq/est.c optional cpufreq
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i386/cpufreq/p4tcc.c optional cpufreq
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