Buildresult: powerpc-next/ppc6xx_defconfig/powerpc-gcc5 built on Aug 3 2018, 16:47
kisskb
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Status:
OK
Date/Time:
Aug 3 2018, 16:47
Duration:
0:04:21.676596
Builder:
ka4
Revision:
powerpc/powernv: Fix concurrency issue with npu->mmio_atsd_usage (
a6fcdbf95d7907bc5d5a669adb86e6bda72d738b)
Target:
powerpc-next/ppc6xx_defconfig/powerpc-gcc5
Branch:
powerpc-next
Compiler:
powerpc-gcc5
(powerpc64-linux-gcc (GCC) 5.3.0)
Config:
ppc6xx_defconfig
(
download
)
Log:
Download original
Possible warnings (3)
include/sound/control.h:223:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized] arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@0:#interrupt-cells: size is (4), expected multiple of 8 arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@4:#interrupt-cells: size is (4), expected multiple of 8
Full Log
# git rev-parse -q --verify a6fcdbf95d7907bc5d5a669adb86e6bda72d738b^{commit} a6fcdbf95d7907bc5d5a669adb86e6bda72d738b already have revision, skipping fetch # git checkout -q -f -B kisskb a6fcdbf95d7907bc5d5a669adb86e6bda72d738b # git clean -qxdf # < git log -1 # commit a6fcdbf95d7907bc5d5a669adb86e6bda72d738b # Author: Reza Arbab <arbab@linux.ibm.com> # Date: Thu Aug 2 23:03:36 2018 -0500 # # powerpc/powernv: Fix concurrency issue with npu->mmio_atsd_usage # # We've encountered a performance issue when multiple processors stress # {get,put}_mmio_atsd_reg(). These functions contend for # mmio_atsd_usage, an unsigned long used as a bitmask. # # The accesses to mmio_atsd_usage are done using test_and_set_bit_lock() # and clear_bit_unlock(). As implemented, both of these will require # a (successful) stwcx to that same cache line. # # What we end up with is thread A, attempting to unlock, being slowed by # other threads repeatedly attempting to lock. A's stwcx instructions # fail and retry because the memory reservation is lost every time a # different thread beats it to the punch. # # There may be a long-term way to fix this at a larger scale, but for # now resolve the immediate problem by gating our call to # test_and_set_bit_lock() with one to test_bit(), which is obviously # implemented without using a store. # # Fixes: 1ab66d1fbada ("powerpc/powernv: Introduce address translation services for Nvlink2") # Signed-off-by: Reza Arbab <arbab@linux.ibm.com> # Acked-by: Alistair Popple <alistair@popple.id.au> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < git log --format=%s --max-count=1 a6fcdbf95d7907bc5d5a669adb86e6bda72d738b # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc6xx_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. In file included from /kisskb/src/sound/ppc/pmac.h:25:0, from /kisskb/src/sound/ppc/awacs.c:29: /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:223:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized] return _snd_ctl_add_slave(master, slave, 0); ^ /kisskb/src/sound/ppc/awacs.c:886:36: note: 'speaker_vol' was declared here struct snd_kcontrol *master_vol, *speaker_vol; ^ arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@0:#interrupt-cells: size is (4), expected multiple of 8 arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@4:#interrupt-cells: size is (4), expected multiple of 8 INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa64cf0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4952213 Bytes = 4836.15 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b007a0 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4952017 Bytes = 4835.95 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4927799 Bytes = 4812.30 kB = 4.70 MB Load Address: 00000000 Entry Point: 00000000 INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4952350 Bytes = 4836.28 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b007a0 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4951802 Bytes = 4835.74 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa75448) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa64cf0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:30 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4951964 Bytes = 4835.90 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:32 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4951414 Bytes = 4835.37 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:32 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4951512 Bytes = 4835.46 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 Image Name: Linux-4.18.0-rc3+ Created: Fri Aug 3 16:51:32 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4952391 Bytes = 4836.32 kB = 4.72 MB Load Address: 00b00000 Entry Point: 00b001f4 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-5.3 # Build took: 0:04:21.676596
© Michael Ellerman 2006-2018.