Buildresult: linus/xtensa-allnoconfig/xtensa-gcc8 built on Nov 3 2015, 07:25

kisskb

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Status:	OK
Date/Time:	Nov 3 2015, 07:25
Duration:	0:00:26.849736
Builder:	ka1
Revision:	mm: get rid of 'vmalloc_info' from /proc/meminfo (`a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0)`
Target:	linus/xtensa-allnoconfig/xtensa-gcc8
Branch:	linus
Compiler:	xtensa-gcc8 (xtensa-linux-gcc (GCC) 4.6.3)
Config:	allnoconfig (download)
Log:	Download original Possible warnings (2) <stdin>:1298:2: warning: #warning syscall userfaultfd not implemented [-Wcpp] <stdin>:1301:2: warning: #warning syscall membarrier not implemented [-Wcpp] Full Log # git rev-parse -q --verify a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0^{commit} a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0 already have revision, skipping fetch # git checkout -q -f -B kisskb a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0 # git clean -qxdf # git log -1 commit a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0 Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Nov 1 17:09:15 2015 -0800 mm: get rid of 'vmalloc_info' from /proc/meminfo It turns out that at least some versions of glibc end up reading /proc/meminfo at every single startup, because glibc wants to know the amount of memory the machine has. And while that's arguably insane, it's just how things are. And it turns out that it's not all that expensive most of the time, but the vmalloc information statistics (amount of virtual memory used in the vmalloc space, and the biggest remaining chunk) can be rather expensive to compute. The 'get_vmalloc_info()' function actually showed up on my profiles as 4% of the CPU usage of "make test" in the git source repository, because the git tests are lots of very short-lived shell-scripts etc. It turns out that apparently this same silly vmalloc info gathering shows up on the facebook servers too, according to Dave Jones. So it's not just "make test" for git. We had two patches to just cache the information (one by me, one by Ingo) to mitigate this issue, but the whole vmalloc information of of rather dubious value to begin with, and people who actually want to know what the situation is wrt the vmalloc area should just look at the much more complete /proc/vmallocinfo instead. In fact, according to my testing - and perhaps more importantly, according to that big search engine in the sky: Google - there is nothing out there that actually cares about those two expensive fields: VmallocUsed and VmallocChunk. So let's try to just remove them entirely. Actually, this just removes the computation and reports the numbers as zero for now, just to try to be minimally intrusive. If this breaks anything, we'll obviously have to re-introduce the code to compute this all and add the caching patches on top. But if given the option, I'd really prefer to just remove this bad idea entirely rather than add even more code to work around our historical mistake that likely nobody really cares about. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/gcc-4.6.3-nolibc/xtensa-linux/bin/xtensa-linux-gcc --version # < git log --format=%s --max-count=1 a5ad88ce8c7fae7ddc72ee49a11a75aa837788e0 # < make -j 48 ARCH=xtensa O=/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/xtensa-linux/bin/xtensa-linux- allnoconfig # make -j 48 ARCH=xtensa O=/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/xtensa-linux/bin/xtensa-linux- make[1]: Entering directory '/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release UPD include/config/kernel.release GEN ./Makefile WRAP arch/xtensa/include/generated/asm/bitsperlong.h WRAP arch/xtensa/include/generated/asm/bug.h WRAP arch/xtensa/include/generated/asm/clkdev.h WRAP arch/xtensa/include/generated/asm/div64.h WRAP arch/xtensa/include/generated/asm/cputime.h WRAP arch/xtensa/include/generated/asm/emergency-restart.h WRAP arch/xtensa/include/generated/asm/errno.h WRAP arch/xtensa/include/generated/asm/fcntl.h WRAP arch/xtensa/include/generated/asm/exec.h WRAP arch/xtensa/include/generated/asm/ioctl.h WRAP arch/xtensa/include/generated/asm/hardirq.h WRAP arch/xtensa/include/generated/asm/irq_regs.h WRAP arch/xtensa/include/generated/asm/kdebug.h WRAP arch/xtensa/include/generated/asm/irq_work.h WRAP arch/xtensa/include/generated/asm/kmap_types.h WRAP arch/xtensa/include/generated/asm/kvm_para.h WRAP arch/xtensa/include/generated/asm/linkage.h WRAP arch/xtensa/include/generated/asm/local64.h WRAP arch/xtensa/include/generated/asm/local.h WRAP arch/xtensa/include/generated/asm/mcs_spinlock.h WRAP arch/xtensa/include/generated/asm/percpu.h WRAP arch/xtensa/include/generated/asm/mm-arch-hooks.h WRAP arch/xtensa/include/generated/asm/preempt.h WRAP arch/xtensa/include/generated/asm/sections.h WRAP arch/xtensa/include/generated/asm/resource.h WRAP arch/xtensa/include/generated/asm/statfs.h WRAP arch/xtensa/include/generated/asm/termios.h WRAP arch/xtensa/include/generated/asm/siginfo.h WRAP arch/xtensa/include/generated/asm/trace_clock.h WRAP arch/xtensa/include/generated/asm/topology.h WRAP arch/xtensa/include/generated/asm/word-at-a-time.h WRAP arch/xtensa/include/generated/asm/xor.h CHK include/generated/uapi/linux/version.h UPD include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h Using /home/kisskb/slave/src as source for kernel HOSTCC scripts/sortextable CC scripts/mod/empty.o HOSTCC scripts/mod/mk_elfconfig CC scripts/mod/devicetable-offsets.s GEN scripts/mod/devicetable-offsets.h MKELF scripts/mod/elfconfig.h HOSTCC scripts/mod/modpost.o HOSTCC scripts/mod/file2alias.o HOSTCC scripts/mod/sumversion.o HOSTLD scripts/mod/modpost CHK include/generated/timeconst.h CC kernel/bounds.s UPD include/generated/timeconst.h CHK include/generated/bounds.h UPD include/generated/bounds.h CC arch/xtensa/kernel/asm-offsets.s CHK include/generated/asm-offsets.h UPD include/generated/asm-offsets.h CALL /home/kisskb/slave/src/scripts/checksyscalls.sh <stdin>:1298:2: warning: #warning syscall userfaultfd not implemented [-Wcpp] <stdin>:1301:2: warning: #warning syscall membarrier not implemented [-Wcpp] CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o CC init/noinitramfs.o CC init/init_task.o LD usr/built-in.o UPD include/generated/compile.h CC init/version.o AS arch/xtensa/kernel/align.o AS arch/xtensa/kernel/coprocessor.o AS arch/xtensa/kernel/entry.o CC arch/xtensa/kernel/irq.o CC arch/xtensa/kernel/platform.o CC arch/xtensa/kernel/pci-dma.o CC arch/xtensa/kernel/process.o CC arch/xtensa/kernel/ptrace.o CC arch/xtensa/kernel/setup.o CC arch/xtensa/kernel/signal.o CC arch/xtensa/kernel/stacktrace.o CC arch/xtensa/kernel/syscall.o CC arch/xtensa/kernel/traps.o CC arch/xtensa/kernel/time.o AS arch/xtensa/kernel/vectors.o LDS arch/xtensa/kernel/vmlinux.lds AS arch/xtensa/kernel/head.o AS arch/xtensa/mm/misc.o CC arch/xtensa/mm/fault.o CC arch/xtensa/mm/mmu.o CC arch/xtensa/mm/cache.o CC arch/xtensa/mm/init.o CC arch/xtensa/mm/tlb.o CC arch/xtensa/platforms/iss/setup.o LD certs/built-in.o CC kernel/fork.o CC kernel/exec_domain.o CC kernel/exit.o CC kernel/panic.o CC kernel/cpu.o CC kernel/softirq.o CC kernel/resource.o CC kernel/sysctl.o CC kernel/sysctl_binary.o CC kernel/user.o CC kernel/capability.o CC kernel/ptrace.o CC kernel/workqueue.o CC kernel/kmod.o CC kernel/sys.o CC kernel/signal.o CC kernel/kthread.o CC kernel/sys_ni.o CC kernel/params.o CC kernel/extable.o CC kernel/task_work.o CC kernel/pid.o CC kernel/notifier.o CC kernel/nsproxy.o CC kernel/reboot.o CC kernel/cred.o CC kernel/ksysfs.o CC kernel/range.o CC kernel/async.o CC kernel/smpboot.o LD kernel/livepatch/built-in.o LD arch/xtensa/platforms/iss/built-in.o CC kernel/up.o CC kernel/power/qos.o CC kernel/memremap.o CC kernel/printk/printk.o CC kernel/rcu/srcu.o CC kernel/rcu/tiny.o CC kernel/rcu/update.o LD arch/xtensa/mm/built-in.o CC kernel/locking/mutex.o CC kernel/locking/semaphore.o LD ipc/built-in.o CC kernel/irq/irqdesc.o CC kernel/irq/handle.o CC kernel/locking/rwsem.o CC kernel/locking/percpu-rwsem.o CC kernel/irq/manage.o CC kernel/irq/spurious.o CC kernel/locking/rwsem-xadd.o LD arch/xtensa/kernel/built-in.o CC kernel/irq/resend.o CC kernel/sched/core.o CC mm/filemap.o LD init/mounts.o CC mm/mempool.o CC mm/oom_kill.o CC kernel/irq/chip.o CC kernel/sched/loadavg.o LD init/built-in.o CC kernel/irq/dummychip.o CC kernel/sched/clock.o CC kernel/irq/devres.o CC kernel/irq/irqdomain.o CC security/commoncap.o CC security/min_addr.o CC kernel/time/time.o CC mm/maccess.o CC kernel/sched/cputime.o CC mm/page_alloc.o CC kernel/sched/idle_task.o CC kernel/time/itimer.o CC kernel/time/hrtimer.o CC kernel/time/posix-timers.o CC kernel/time/timer.o CC kernel/sched/rt.o CC kernel/sched/fair.o CC kernel/time/posix-cpu-timers.o CC kernel/sched/deadline.o CC kernel/time/timekeeping.o CC kernel/time/ntp.o CC kernel/sched/stop_task.o LD kernel/rcu/built-in.o CC kernel/time/timer_list.o CC kernel/time/timeconv.o CC kernel/time/jiffies.o CC kernel/time/clocksource.o LD crypto/built-in.o LD kernel/power/built-in.o CC kernel/time/timecounter.o CC kernel/time/posix-clock.o CC kernel/sched/wait.o LD kernel/locking/built-in.o CC mm/readahead.o CC kernel/time/alarmtimer.o CC mm/page-writeback.o CC kernel/sched/completion.o CC kernel/sched/idle.o CC mm/swap.o CC kernel/time/clockevents.o CC kernel/time/tick-common.o CC fs/read_write.o CC fs/open.o CC fs/file_table.o CC kernel/time/sched_clock.o CC fs/super.o CC mm/truncate.o LD kernel/printk/built-in.o CC fs/char_dev.o CC fs/stat.o LD block/built-in.o CC mm/vmscan.o CC fs/exec.o CC fs/pipe.o CC mm/shmem.o CC fs/namei.o CC fs/fcntl.o CC mm/util.o CC fs/ioctl.o CC mm/vmstat.o CC mm/mmzone.o CC fs/readdir.o CC mm/backing-dev.o CC mm/mm_init.o CC fs/dcache.o CC fs/select.o CC mm/mmu_context.o LD kernel/irq/built-in.o CC fs/inode.o CC mm/percpu.o CC mm/slab_common.o CC fs/attr.o CC mm/compaction.o CC fs/bad_inode.o CC mm/vmacache.o CC mm/interval_tree.o CC fs/file.o CC mm/list_lru.o CC mm/workingset.o LD security/built-in.o CC fs/filesystems.o CC mm/debug.o CC fs/namespace.o CC mm/gup.o CC fs/seq_file.o CC mm/highmem.o CC mm/memory.o CC fs/xattr.o CC fs/libfs.o CC fs/fs-writeback.o CC mm/mincore.o CC fs/pnode.o LD sound/built-in.o CC mm/mlock.o CC fs/splice.o CC mm/mmap.o CC fs/sync.o CC mm/mprotect.o CC mm/mremap.o CC mm/msync.o CC fs/utimes.o CC mm/rmap.o CC fs/stack.o CC mm/vmalloc.o CC mm/pagewalk.o CC mm/pgtable-generic.o CC fs/fs_struct.o CC mm/init-mm.o CC mm/bootmem.o CC fs/statfs.o CC mm/dmapool.o CC mm/slub.o CC fs/fs_pin.o CC fs/nsfs.o LD firmware/built-in.o CC fs/no-block.o LD fs/devpts/built-in.o LD fs/exofs/built-in.o LD kernel/time/built-in.o LD fs/quota/built-in.o CC fs/ramfs/file-mmu.o CC fs/ramfs/inode.o LD fs/notify/fanotify/built-in.o LD fs/notify/inotify/built-in.o LD fs/notify/dnotify/built-in.o LD net/built-in.o LD fs/notify/built-in.o LD kernel/sched/built-in.o LD drivers/bus/built-in.o LD drivers/amba/built-in.o LD drivers/cdrom/built-in.o LD drivers/firewire/built-in.o LD drivers/gpio/built-in.o LD drivers/clocksource/built-in.o LD drivers/auxdisplay/built-in.o LD drivers/block/built-in.o LD drivers/leds/built-in.o LD drivers/idle/built-in.o LD drivers/lguest/built-in.o LD drivers/macintosh/built-in.o LD kernel/built-in.o CC drivers/irqchip/irq-xtensa-pic.o LD drivers/mmc/built-in.o LD drivers/platform/built-in.o LD drivers/mfd/built-in.o LD drivers/net/built-in.o LD drivers/nfc/built-in.o CC drivers/char/mem.o CC drivers/char/random.o LD drivers/pwm/built-in.o LD drivers/hsi/controllers/built-in.o CC drivers/char/misc.o LD drivers/soc/built-in.o LD drivers/hsi/clients/built-in.o LD drivers/char/agp/built-in.o LD drivers/gpu/vga/built-in.o LD drivers/firmware/broadcom/built-in.o LD drivers/i2c/muxes/built-in.o LD drivers/video/backlight/built-in.o LD drivers/i2c/algos/built-in.o LD drivers/i2c/busses/built-in.o CC drivers/clk/clk-devres.o CC drivers/clk/clk.o CC drivers/clk/clkdev.o LD drivers/firmware/built-in.o LD drivers/hsi/built-in.o LD drivers/gpu/drm/tilcdc/built-in.o LD drivers/tty/serial/built-in.o CC drivers/clk/clk-fixed-rate.o CC drivers/clk/clk-divider.o LD drivers/tty/ipwireless/built-in.o LD drivers/gpu/drm/panel/built-in.o CC drivers/clk/clk-gate.o LD drivers/gpu/drm/bridge/built-in.o LD drivers/gpu/drm/i2c/built-in.o CC drivers/clk/clk-composite.o CC drivers/clk/clk-fixed-factor.o LD drivers/tty/vt/built-in.o CC drivers/clk/clk-mux.o LD drivers/i2c/built-in.o CC drivers/clk/clk-fractional-divider.o CC drivers/clk/clk-gpio.o LD drivers/misc/cb710/built-in.o CC drivers/video/fbdev/core/fb_notify.o LD drivers/gpu/drm/built-in.o LD drivers/misc/eeprom/built-in.o LD drivers/misc/lis3lv02d/built-in.o LD drivers/tty/built-in.o LD drivers/misc/ti-st/built-in.o LD arch/xtensa/lib/built-in.o AS arch/xtensa/lib/checksum.o AS arch/xtensa/lib/memcopy.o AS arch/xtensa/lib/usercopy.o AS arch/xtensa/lib/memset.o AS arch/xtensa/lib/strnlen_user.o LD drivers/video/fbdev/omap2/dss/built-in.o AS arch/xtensa/lib/strncpy_user.o LD drivers/video/fbdev/omap2/displays-new/built-in.o LD drivers/misc/mic/bus/built-in.o LD drivers/gpu/built-in.o LD fs/ramfs/ramfs.o LD drivers/misc/mic/built-in.o LD drivers/irqchip/built-in.o CC drivers/base/component.o CC drivers/base/core.o LD drivers/media/tuners/built-in.o LD drivers/video/fbdev/omap2/built-in.o CC drivers/base/dd.o LD drivers/media/firewire/built-in.o CC drivers/base/bus.o CC drivers/base/driver.o CC drivers/base/syscore.o LD drivers/misc/built-in.o LD fs/ramfs/built-in.o CC drivers/base/class.o LD drivers/media/mmc/siano/built-in.o CC drivers/base/platform.o LD drivers/media/platform/omap/built-in.o CC drivers/base/cpu.o CC drivers/base/firmware.o CC drivers/base/devres.o CC drivers/base/map.o CC drivers/base/init.o LD drivers/media/rc/keymaps/built-in.o CC drivers/base/attribute_container.o CC drivers/base/transport_class.o LD drivers/media/common/b2c2/built-in.o AR arch/xtensa/lib/lib.a LD drivers/media/common/saa7146/built-in.o LD drivers/media/common/siano/built-in.o LD drivers/media/i2c/soc_camera/built-in.o LD drivers/media/mmc/built-in.o LD drivers/media/rc/built-in.o CC drivers/base/container.o CC drivers/base/property.o CC drivers/base/topology.o LD drivers/media/platform/built-in.o CC drivers/base/cacheinfo.o LD drivers/media/common/built-in.o CC drivers/base/dma-mapping.o LD drivers/media/i2c/built-in.o LD drivers/video/fbdev/core/built-in.o CC drivers/base/power/clock_ops.o LD drivers/video/fbdev/built-in.o LD drivers/video/built-in.o CC lib/bcd.o CC lib/div64.o CC lib/lockref.o CC lib/sort.o CC lib/parser.o CC lib/debug_locks.o CC lib/gcd.o CC lib/halfmd4.o CC lib/kasprintf.o CC lib/scatterlist.o LD drivers/media/usb/s2255/built-in.o LD drivers/media/usb/zr364xx/built-in.o CC lib/random32.o CC lib/lcm.o CC lib/bitmap.o CC lib/bust_spinlocks.o LD drivers/media/usb/siano/built-in.o LD drivers/media/usb/stkwebcam/built-in.o LD drivers/media/usb/b2c2/built-in.o LD drivers/media/usb/dvb-usb-v2/built-in.o LD drivers/media/usb/ttusb-budget/built-in.o LD drivers/media/usb/dvb-usb/built-in.o LD drivers/media/usb/ttusb-dec/built-in.o CC lib/list_sort.o CC lib/uuid.o CC lib/iov_iter.o CC lib/flex_array.o CC lib/kfifo.o CC lib/bsearch.o CC lib/clz_ctz.o CC lib/percpu_ida.o CC lib/find_bit.o CC lib/memweight.o CC lib/llist.o CC lib/percpu-refcount.o CC lib/rhashtable.o CC lib/reciprocal_div.o LD drivers/media/usb/built-in.o CC lib/kstrtox.o CC lib/string_helpers.o CC lib/hexdump.o CC lib/iomap_copy.o CC lib/pci_iomap.o CC lib/devres.o LD mm/built-in.o LD drivers/media/pci/b2c2/built-in.o LD drivers/media/pci/dm1105/built-in.o LD drivers/base/power/built-in.o CC lib/hweight.o CC lib/argv_split.o LD drivers/media/pci/ddbridge/built-in.o LD drivers/media/pci/mantis/built-in.o CC lib/atomic64.o LD drivers/media/pci/netup_unidvb/built-in.o LD drivers/media/pci/ngene/built-in.o CC lib/cmdline.o LD drivers/char/built-in.o CC lib/dec_and_lock.o CC lib/decompress.o CC lib/dump_stack.o CC lib/ctype.o LD drivers/media/pci/pluto2/built-in.o CC lib/earlycpio.o CC lib/flex_proportions.o CC lib/idr.o CC lib/extable.o LD drivers/media/pci/pt1/built-in.o CC lib/int_sqrt.o CC lib/ioremap.o LD drivers/media/pci/saa7146/built-in.o LD drivers/media/pci/smipcie/built-in.o LD drivers/media/pci/pt3/built-in.o CC lib/irq_regs.o LD drivers/media/pci/ttpci/built-in.o CC lib/is_single_threaded.o CC lib/klist.o CC lib/kobject_uevent.o CC lib/md5.o CC lib/kobject.o CC lib/proportions.o CC lib/plist.o CC lib/nmi_backtrace.o CC lib/ratelimit.o CC lib/rbtree.o CC lib/radix-tree.o LD drivers/media/pci/built-in.o CC lib/sha1.o CC lib/show_mem.o CC lib/seq_buf.o CC lib/string.o CC lib/timerqueue.o CC lib/vsprintf.o LD fs/built-in.o LD drivers/clk/built-in.o LD drivers/media/built-in.o LD drivers/base/built-in.o LD drivers/built-in.o LD lib/built-in.o AR lib/lib.a LINK vmlinux LD vmlinux.o MODPOST vmlinux.o GEN .version CHK include/generated/compile.h UPD include/generated/compile.h CC init/version.o LD init/built-in.o LD vmlinux SORTEX vmlinux SYSMAP System.map OBJCOPY vmlinux.bin LD arch/xtensa/boot/lib/built-in.o COPY arch/xtensa/boot/lib/inffast.c COPY arch/xtensa/boot/lib/inflate.c COPY arch/xtensa/boot/lib/inftrees.c CC arch/xtensa/boot/lib/zmem.o CC arch/xtensa/boot/lib/inffast.o CC arch/xtensa/boot/lib/inflate.o CC arch/xtensa/boot/lib/inftrees.o AR arch/xtensa/boot/lib/lib.a AS arch/xtensa/boot/boot-elf/bootstrap.o LDS arch/xtensa/boot/boot-elf/boot.lds Kernel: arch/xtensa/boot/boot-elf/../Image.elf is ready make[1]: Leaving directory '/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa' Completed OK # rm -rf /home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa # Build took: 0:00:26.849736

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