On Tue, Mar 15, 2016 at 09:55:06PM +0000, Qais Yousef wrote:

Hi Guenter,

On 15/03/2016 05:26, Guenter Roeck wrote:

quoted

On Mon, Mar 14, 2016 at 07:37:29AM -0700, Guenter Roeck wrote:

quoted

On Mon, Mar 14, 2016 at 05:40:37PM +1100, Stephen Rothwell wrote:

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Hi all,

Changes since 20160311:

The vfs tree gained a conflict against Linus' tree. I also applied a
patch for a known runtime bug.

The tip tree gained a conflict against the mips tree.

The aio tree still had a build failure so I removed several commits
from it.  It also gained a conflict against the vfs tree.

Non-merge commits (relative to Linus' tree): 11202
 8646 files changed, 426680 insertions(+), 211740 deletions(-)

To give people an idea what to expect in the merge window, here are my current
build and runtime test results. Some of the runtime failures are due to the
newly introduced i2c bug, but many (including the arm64 boot failures) have
been around for a while.

[ ... ]

quoted

Qemu test results:
total: 96 pass: 69 fail: 27
Failed tests:

[ ... ]

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mips:mips_malta_smp_defconfig

I bisected this failure to commit bb11cff327e54 ("MIPS: Make smp CMP, CPS and MT
use the new generic IPI functions". Bisect log is attached.

Thanks for bisecting this. I tested this on a real Malta system but not
qemu. I'll try to reproduce.

I run the tests with only a single CPU core enabled. Maybe that causes
problems with your code ?

Can I get qemu run script and the instructions to use it from somewhere?

Clone https://github.com/groeck/linux-build-test.git.
Look in rootfs/*mips* for qemu scripts and root file systems.
The SMP tests all fail, so it should not matter which one you pick.
I use my own version of qemu, but for mips standard qemu 2.5.0 should
work fine (I don't have any mips specific changes in my version).

Hope this helps,
Guenter

Thanks,
Qais

quoted

quoted

mips64:smp:mips_malta64_defconfig
mips:mipsel_malta_smp_defconfig
mips:mipsel_malta64_smp_defconfig

If necessary I can repeat the bisect for those. Please let me know.

Thanks,
Guenter

---
Bisect log:

# bad: [4342eec3c5a2402ca5de3d6e56f541fe1c5171e2] Add linux-next specific files for 20160314
# good: [f6cede5b49e822ebc41a099fe41ab4989f64e2cb] Linux 4.5-rc7
git bisect start 'HEAD' 'v4.5-rc7'
# good: [0525c3e26ec2c43cd509433be3be25210a0154ef] Merge remote-tracking branch 'drm-tegra/drm/tegra/for-next'
git bisect good 0525c3e26ec2c43cd509433be3be25210a0154ef
# bad: [385128a1b49762c1b9515c9f6294aeebbc55b956] Merge remote-tracking branch 'usb-chipidea-next/ci-for-usb-next'
git bisect bad 385128a1b49762c1b9515c9f6294aeebbc55b956
# good: [dfdb27baab4fc45c9399a991270413d0fb1c694a] Merge remote-tracking branch 'spi/for-next'
git bisect good dfdb27baab4fc45c9399a991270413d0fb1c694a
# bad: [e368d7d2a0dce6d6795ead1fc8a09bcca8a4a565] Merge branch 'timers/nohz'
git bisect bad e368d7d2a0dce6d6795ead1fc8a09bcca8a4a565
# good: [ced30bc9129777d715057d06fc8dbdfd3b81e94d] Merge tag 'perf-core-for-mingo-20160310' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
git bisect good ced30bc9129777d715057d06fc8dbdfd3b81e94d
# bad: [656a61d4d9cbb8dfc2d007281190b2eccebad522] manual merge of mm/pkeys
git bisect bad 656a61d4d9cbb8dfc2d007281190b2eccebad522
# good: [16f7379f2da43f29d9faa2f474745e2705a3f510] Merge branch 'efi/core'
git bisect good 16f7379f2da43f29d9faa2f474745e2705a3f510
# bad: [a7fb9a8169be9a55e0cfb98346aece1b51c016fa] Merge branch 'locking/core'
git bisect bad a7fb9a8169be9a55e0cfb98346aece1b51c016fa
# good: [2a07870511829977d02609dac6450017b0419ea9] irqchip/mips-gic: Use gic_vpes instead of NR_CPUS
git bisect good 2a07870511829977d02609dac6450017b0419ea9
# good: [eaff0e7003cca6c2748b67ead2d4b1a8ad858fc7] locking/pvqspinlock: Move lock stealing count tracking code into pv_queued_spin_steal_lock()
git bisect good eaff0e7003cca6c2748b67ead2d4b1a8ad858fc7
# good: [013e379a3094ff2898f8d33cfbff1573d471ee14] tools/lib/lockdep: Fix link creation warning
git bisect good 013e379a3094ff2898f8d33cfbff1573d471ee14
# bad: [7eb8c99db26cc6499bfb1eba72dffc4730570752] MIPS: Delete smp-gic.c
git bisect bad 7eb8c99db26cc6499bfb1eba72dffc4730570752
# good: [fbde2d7d8290d8c642d591a471356abda2446874] MIPS: Add generic SMP IPI support
git bisect good fbde2d7d8290d8c642d591a471356abda2446874
# bad: [bb11cff327e54179c13446c4022ed4ed7d4871c7] MIPS: Make smp CMP, CPS and MT use the new generic IPI functions
git bisect bad bb11cff327e54179c13446c4022ed4ed7d4871c7
# first bad commit: [bb11cff327e54179c13446c4022ed4ed7d4871c7] MIPS: Make smp CMP, CPS and MT use the new generic IPI functions