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c0345a84aa
via the debug.minidump sysctl and tunable. Traditional dumps store all physical memory. This was once a good thing when machines had a maximum of 64M of ram and 1GB of kvm. These days, machines often have many gigabytes of ram and a smaller amount of kvm. libkvm+kgdb don't have a way to access physical ram that is not mapped into kvm at the time of the crash dump, so the extra ram being dumped is mostly wasted. Minidumps invert the process. Instead of dumping physical memory in in order to guarantee that all of kvm's backing is dumped, minidumps instead dump only memory that is actively mapped into kvm. amd64 has a direct map region that things like UMA use. Obviously we cannot dump all of the direct map region because that is effectively an old style all-physical-memory dump. Instead, introduce a bitmap and two helper routines (dump_add_page(pa) and dump_drop_page(pa)) that allow certain critical direct map pages to be included in the dump. uma_machdep.c's allocator is the intended consumer. Dumps are a custom format. At the very beginning of the file is a header, then a copy of the message buffer, then the bitmap of pages present in the dump, then the final level of the kvm page table trees (2MB mappings are expanded into a 4K page mappings), then the sparse physical pages according to the bitmap. libkvm can now conveniently access the kvm page table entries. Booting my test 8GB machine, forcing it into ddb and forcing a dump leads to a 48MB minidump. While this is a best case, I expect minidumps to be in the 100MB-500MB range. Obviously, never larger than physical memory of course. minidumps are on by default. It would want be necessary to turn them off if it was necessary to debug corrupt kernel page table management as that would mess up minidumps as well. Both minidumps and regular dumps are supported on the same machine.
254 lines
10 KiB
Plaintext
254 lines
10 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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#
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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_smbios.c optional ipmi isa
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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/nve/if_nve.c optional nve pci
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dev/ppc/ppc.c optional ppc
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dev/ppc/ppc_puc.c optional ppc puc
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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/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_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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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_file.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_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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#
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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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