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23fbc06bfc
freebsd-dev/sys/conf/files.powerpc
Konstantin Belousov aea810386d Implement mechanism to export some kernel timekeeping data to 
usermode, using shared page.  The structures and functions have vdso
prefix, to indicate the intended location of the code in some future.

The versioned per-algorithm data is exported in the format of struct
vdso_timehands, which mostly repeats the content of in-kernel struct
timehands. Usermode reading of the structure can be lockless.
Compatibility export for 32bit processes on 64bit host is also
provided. Kernel also provides usermode with indication about
currently used timecounter, so that libc can fall back to syscall if
configured timecounter is unknown to usermode code.

The shared data updates are initiated both from the tc_windup(), where
a fast task is queued to do the update, and from sysctl handlers which
change timecounter. A manual override switch
kern.timecounter.fast_gettime allows to turn off the mechanism.

Only x86 architectures export the real algorithm data, and there, only
for tsc timecounter. HPET counters page could be exported as well, but
I prefer to not further glue the kernel and libc ABI there until
proper vdso-based solution is developed.

Minimal stubs neccessary for non-x86 architectures to still compile
are provided.

Discussed with:	bde
Reviewed by:	jhb
Tested by:	flo
MFC after:	1 month
2012-06-22 07:06:40 +00:00

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# This file tells config what files go into building a kernel,
# files marked standard are always included.
#
# $FreeBSD$
#
# The long compile-with and dependency lines are required because of
# limitations in config: backslash-newline doesn't work in strings, and
# dependency lines other than the first are silently ignored.
#
#
font.h optional sc \
compile-with "uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x16.fnt && file2c 'u_char dflt_font_16[16*256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x14.fnt && file2c 'u_char dflt_font_14[14*256] = {' '};' < ${SC_DFLT_FONT}-8x14 >> font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x8.fnt && file2c 'u_char dflt_font_8[8*256] = {' '};' < ${SC_DFLT_FONT}-8x8 >> font.h" \
no-obj no-implicit-rule before-depend \
clean "font.h ${SC_DFLT_FONT}-8x14 ${SC_DFLT_FONT}-8x16 ${SC_DFLT_FONT}-8x8"
#
# There is only an asm version on ppc64.
cddl/compat/opensolaris/kern/opensolaris_atomic.c optional zfs powerpc compile-with "${ZFS_C}"
cddl/contrib/opensolaris/common/atomic/powerpc64/opensolaris_atomic.S optional zfs powerpc64 compile-with "${ZFS_S}"
crypto/blowfish/bf_enc.c optional crypto | ipsec
crypto/des/des_enc.c optional crypto | ipsec | netsmb
dev/bm/if_bm.c optional bm powermac
dev/adb/adb_bus.c optional adb
dev/adb/adb_kbd.c optional adb
dev/adb/adb_mouse.c optional adb
dev/adb/adb_hb_if.m optional adb
dev/adb/adb_if.m optional adb
dev/adb/adb_buttons.c optional adb
dev/agp/agp_apple.c optional agp powermac
dev/cfi/cfi_bus_fdt.c optional cfi fdt
dev/fb/fb.c optional sc
dev/fdt/fdt_powerpc.c optional fdt
dev/hwpmc/hwpmc_powerpc.c optional hwpmc
dev/iicbus/ad7417.c optional ad7417 powermac
dev/iicbus/ds1775.c optional ds1775 powermac
dev/iicbus/max6690.c optional max6690 powermac
dev/kbd/kbd.c optional sc
dev/ofw/openfirm.c optional aim | fdt
dev/ofw/openfirmio.c optional aim | fdt
dev/ofw/ofw_bus_if.m optional aim | fdt
dev/ofw/ofw_if.m optional aim | fdt
dev/ofw/ofw_bus_subr.c optional aim | fdt
dev/ofw/ofw_console.c optional aim
dev/ofw/ofw_disk.c optional ofwd aim
dev/ofw/ofw_fdt.c optional fdt
dev/ofw/ofw_iicbus.c optional iicbus aim
dev/ofw/ofw_standard.c optional aim powerpc
dev/powermac_nvram/powermac_nvram.c optional powermac_nvram powermac
dev/quicc/quicc_bfe_fdt.c optional quicc mpc85xx
dev/scc/scc_bfe_macio.c optional scc powermac
dev/sec/sec.c optional sec mpc85xx
dev/sound/macio/aoa.c optional snd_davbus | snd_ai2s powermac
dev/sound/macio/davbus.c optional snd_davbus powermac
dev/sound/macio/i2s.c optional snd_ai2s powermac
dev/sound/macio/snapper.c optional snd_ai2s iicbus powermac
dev/sound/macio/tumbler.c optional snd_ai2s iicbus powermac
dev/syscons/scgfbrndr.c optional sc
dev/syscons/scterm-teken.c optional sc
dev/syscons/scvtb.c optional sc
dev/tsec/if_tsec.c optional tsec
dev/tsec/if_tsec_fdt.c optional tsec fdt
dev/uart/uart_cpu_powerpc.c optional uart aim
kern/kern_clocksource.c standard
kern/subr_dummy_vdso_tc.c standard
kern/syscalls.c optional ktr
libkern/ashldi3.c optional powerpc
libkern/ashrdi3.c optional powerpc
libkern/bcmp.c standard
libkern/cmpdi2.c optional powerpc
libkern/divdi3.c optional powerpc
libkern/ffs.c standard
libkern/ffsl.c standard
libkern/fls.c standard
libkern/flsl.c standard
libkern/lshrdi3.c optional powerpc
libkern/memchr.c optional fdt
libkern/memmove.c standard
libkern/memset.c standard
libkern/moddi3.c optional powerpc
libkern/qdivrem.c optional powerpc
libkern/ucmpdi2.c optional powerpc
libkern/udivdi3.c optional powerpc
libkern/umoddi3.c optional powerpc
powerpc/aim/clock.c optional aim
powerpc/aim/copyinout.c optional aim
powerpc/aim/interrupt.c optional aim
powerpc/aim/locore.S optional aim no-obj
powerpc/aim/machdep.c optional aim
powerpc/aim/mmu_oea.c optional aim powerpc
powerpc/aim/mmu_oea64.c optional aim
powerpc/aim/moea64_if.m optional aim
powerpc/aim/moea64_native.c optional aim
powerpc/aim/mp_cpudep.c optional aim smp
powerpc/aim/nexus.c optional aim
powerpc/aim/slb.c optional aim powerpc64
powerpc/aim/swtch32.S optional aim powerpc
powerpc/aim/swtch64.S optional aim powerpc64
powerpc/aim/trap.c optional aim
powerpc/aim/uma_machdep.c optional aim
powerpc/aim/vm_machdep.c optional aim
powerpc/booke/clock.c optional booke
powerpc/booke/copyinout.c optional booke
powerpc/booke/interrupt.c optional booke
powerpc/booke/locore.S optional booke no-obj
powerpc/booke/machdep.c optional booke
powerpc/booke/machdep_e500.c optional booke_e500
powerpc/booke/mp_cpudep.c optional booke smp
powerpc/booke/platform_bare.c optional mpc85xx
powerpc/booke/pmap.c optional booke
powerpc/booke/swtch.S optional booke
powerpc/booke/trap.c optional booke
powerpc/booke/vm_machdep.c optional booke
powerpc/cpufreq/dfs.c optional cpufreq
powerpc/cpufreq/pcr.c optional cpufreq aim
powerpc/fpu/fpu_add.c optional fpu_emu powerpc
powerpc/fpu/fpu_compare.c optional fpu_emu powerpc
powerpc/fpu/fpu_div.c optional fpu_emu powerpc
powerpc/fpu/fpu_emu.c optional fpu_emu powerpc
powerpc/fpu/fpu_explode.c optional fpu_emu powerpc
powerpc/fpu/fpu_implode.c optional fpu_emu powerpc
powerpc/fpu/fpu_mul.c optional fpu_emu powerpc
powerpc/fpu/fpu_sqrt.c optional fpu_emu powerpc
powerpc/fpu/fpu_subr.c optional fpu_emu powerpc
powerpc/mambo/mambocall.S optional mambo
powerpc/mambo/mambo.c optional mambo
powerpc/mambo/mambo_console.c optional mambo
powerpc/mambo/mambo_disk.c optional mambo
powerpc/mambo/mambo_openpic.c optional mambo
powerpc/mpc85xx/atpic.c optional mpc85xx isa
powerpc/mpc85xx/ds1553_bus_fdt.c optional ds1553 fdt
powerpc/mpc85xx/ds1553_core.c optional ds1553
powerpc/mpc85xx/i2c.c optional iicbus fdt
powerpc/mpc85xx/isa.c optional mpc85xx isa
powerpc/mpc85xx/lbc.c optional mpc85xx
powerpc/mpc85xx/mpc85xx.c optional mpc85xx
powerpc/mpc85xx/nexus.c optional mpc85xx
powerpc/mpc85xx/pci_fdt.c optional pci mpc85xx
powerpc/ofw/ofw_cpu.c optional aim
powerpc/ofw/ofw_machdep.c optional aim
powerpc/ofw/ofw_pci.c optional pci aim
powerpc/ofw/ofw_pcibus.c optional pci aim
powerpc/ofw/ofw_pcib_pci.c optional pci aim
powerpc/ofw/ofw_real.c optional aim
powerpc/ofw/ofw_syscons.c optional sc aim
powerpc/ofw/ofwcall32.S optional aim powerpc
powerpc/ofw/ofwcall64.S optional aim powerpc64
powerpc/ofw/ofwmagic.S optional aim
powerpc/ofw/rtas.c optional aim
powerpc/powermac/ata_kauai.c optional powermac ata | powermac atamacio
powerpc/powermac/ata_macio.c optional powermac ata | powermac atamacio
powerpc/powermac/ata_dbdma.c optional powermac ata | powermac atamacio
powerpc/powermac/atibl.c optional powermac atibl
powerpc/powermac/cuda.c optional powermac cuda
powerpc/powermac/cpcht.c optional powermac pci
powerpc/powermac/dbdma.c optional powermac pci
powerpc/powermac/fcu.c optional powermac fcu
powerpc/powermac/grackle.c optional powermac pci
powerpc/powermac/hrowpic.c optional powermac pci
powerpc/powermac/kiic.c optional powermac kiic
powerpc/powermac/macgpio.c optional powermac pci
powerpc/powermac/macio.c optional powermac pci
powerpc/powermac/openpic_macio.c optional powermac pci
powerpc/powermac/platform_powermac.c optional powermac
powerpc/powermac/powermac_thermal.c optional powermac
powerpc/powermac/pswitch.c optional powermac pswitch
powerpc/powermac/pmu.c optional powermac pmu
powerpc/powermac/smu.c optional powermac smu
powerpc/powermac/smusat.c optional powermac smu
powerpc/powermac/uninorth.c optional powermac
powerpc/powermac/uninorthpci.c optional powermac pci
powerpc/powermac/vcoregpio.c optional powermac
powerpc/powermac/windtunnel.c optional powermac windtunnel
powerpc/powerpc/altivec.c optional aim
powerpc/powerpc/autoconf.c standard
powerpc/powerpc/bcopy.c standard
powerpc/powerpc/bus_machdep.c standard
powerpc/powerpc/busdma_machdep.c standard
powerpc/powerpc/copystr.c standard
powerpc/powerpc/cpu.c standard
powerpc/powerpc/db_disasm.c optional ddb
powerpc/powerpc/db_hwwatch.c optional ddb
powerpc/powerpc/db_interface.c optional ddb
powerpc/powerpc/db_trace.c optional ddb
powerpc/powerpc/dump_machdep.c standard
powerpc/powerpc/elf32_machdep.c optional powerpc | compat_freebsd32
powerpc/powerpc/elf64_machdep.c optional powerpc64
powerpc/powerpc/exec_machdep.c standard
powerpc/powerpc/fpu.c optional aim
powerpc/powerpc/fuswintr.c standard
powerpc/powerpc/gdb_machdep.c optional gdb
powerpc/powerpc/in_cksum.c optional inet | inet6
powerpc/powerpc/intr_machdep.c standard
powerpc/powerpc/iommu_if.m standard
powerpc/powerpc/mem.c optional mem
powerpc/powerpc/mmu_if.m standard
powerpc/powerpc/mp_machdep.c optional smp
powerpc/powerpc/openpic.c standard
powerpc/powerpc/openpic_fdt.c optional fdt
powerpc/powerpc/pic_if.m standard
powerpc/powerpc/pmap_dispatch.c standard
powerpc/powerpc/platform.c standard
powerpc/powerpc/platform_if.m standard
powerpc/powerpc/sc_machdep.c optional sc
powerpc/powerpc/setjmp.S standard
powerpc/powerpc/sigcode32.S optional powerpc | compat_freebsd32
powerpc/powerpc/sigcode64.S optional powerpc64
powerpc/powerpc/stack_machdep.c optional ddb | stack
powerpc/powerpc/suswintr.c standard
powerpc/powerpc/syncicache.c standard
powerpc/powerpc/sys_machdep.c standard
powerpc/powerpc/uio_machdep.c standard
powerpc/ps3/ehci_ps3.c optional ps3 ehci
powerpc/ps3/ohci_ps3.c optional ps3 ohci
powerpc/ps3/if_glc.c optional ps3 glc
powerpc/ps3/mmu_ps3.c optional ps3
powerpc/ps3/platform_ps3.c optional ps3
powerpc/ps3/ps3bus.c optional ps3
powerpc/ps3/ps3cdrom.c optional ps3 scbus
powerpc/ps3/ps3disk.c optional ps3
powerpc/ps3/ps3pic.c optional ps3
powerpc/ps3/ps3_syscons.c optional ps3 sc
powerpc/ps3/ps3-hvcall.S optional ps3 sc
powerpc/psim/iobus.c optional psim
powerpc/psim/ata_iobus.c optional ata psim
powerpc/psim/openpic_iobus.c optional psim
powerpc/psim/uart_iobus.c optional uart psim
compat/freebsd32/freebsd32_ioctl.c optional compat_freebsd32
compat/freebsd32/freebsd32_misc.c optional compat_freebsd32
compat/freebsd32/freebsd32_syscalls.c optional compat_freebsd32
compat/freebsd32/freebsd32_sysent.c optional compat_freebsd32
kern/imgact_elf32.c optional compat_freebsd32
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