linaro-kernel February 2017

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119 discussions

master build: 2 failures 0 warnings (v4.10-1242-g9763dd6)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-1242-g9763dd6 Commit: 9763dd6f81 Merge tag 'gfs2-4.11.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Build Time: 98 min 26 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 2 Warnings: 0 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] arm-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- Errors summary: 2 2 ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] 2 ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig

8 years

master build: 2 failures 0 warnings (v4.10-1215-g2bfe01e)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-1215-g2bfe01e Commit: 2bfe01eff4 Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 Build Time: 158 min 54 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 2 Warnings: 0 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] arm-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- Errors summary: 2 2 ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] 2 ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig

8 years

master build: 2 failures 0 warnings (v4.10-701-g280d7a1)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-701-g280d7a1 Commit: 280d7a1ede Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 98 min 13 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 2 Warnings: 0 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] arm-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- Errors summary: 2 2 ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] 2 ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig

8 years

master build: 0 failures 0 warnings (v4.10-307-g1cd4027)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-307-g1cd4027 Commit: 1cd4027cfe Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 109 min 52 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years

[PATCH] cpufreq: schedutil: govern how frequently we change frequency with rate_limit

by Viresh Kumar

For an ideal system (where frequency change doesn't incur any penalty) we would like to change the frequency as soon as the load changes for a CPU. But the systems we have to work with are far from ideal and it takes time to change the frequency of a CPU. For many ARM platforms specially, it is at least 1 ms. In order to not spend too much time changing frequency, we have earlier introduced a sysfs controlled tunable for the schedutil governor: rate_limit_us. Currently, rate_limit_us controls how frequently we reevaluate frequency for a set of CPUs controlled by a cpufreq policy. But that may not be the ideal behavior we want. Consider for example the following scenario. The rate_limit_us tunable is set to 10 ms. The CPU has a constant load X and that requires the frequency to be set to Y. The schedutil governor changes the frequency to Y, updates last_freq_update_time and we wait for 10 ms to reevaluate the frequency again. After 10 ms, the schedutil governor reevaluates the load and finds it to be the same. And so it doesn't update the frequency, but updates last_freq_update_time before returning. Right after this point, the scheduler puts more load on the CPU and the CPU needs to go to a higher frequency Z. Because last_freq_update_time was updated just now, the schedutil governor waits for additional 10ms before reevaluating the load again. Normally, the time it takes to reevaluate the frequency is negligible compared to the time it takes to change the frequency. And considering that in the above scenario, as we haven't updated the frequency for over 10ms, we should have changed the frequency as soon as the load changed. This patch changes the way rate_limit_us is used, i.e. It now governs "How frequently we change the frequency" instead of "How frequently we reevaluate the frequency". One may think that this change may have increased the number of times we reevaluate the frequency after a period of rate_limit_us has expired since the last change, if the load isn't changing. But that is protected by the scheduler as normally it doesn't call into the schedutil governor before 1 ms (Hint: "decayed" in update_cfs_rq_load_avg()) since the last call. Tests were performed with this patch on a Dual cluster (same frequency domain), octa-core ARM64 platform (Hikey). Hackbench (Debian) and Vellamo/Galleryfling (Android) didn't had much difference in performance w/ or w/o this patch. Its difficult to create a test case (tried rt-app as well) where this patch will show a lot of improvements as the target of this patch is a real corner case. I.e. Current load is X (resulting in freq change), load after rate_limit_us is also X, but right after that load becomes Y. Undoubtedly this patch would improve the responsiveness in such cases. Signed-off-by: Viresh Kumar <viresh.kumar(a)linaro.org> --- kernel/sched/cpufreq_schedutil.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index fd4659313640..306d97e7b57c 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -92,14 +92,13 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time, { struct cpufreq_policy *policy = sg_policy->policy; - sg_policy->last_freq_update_time = time; - if (policy->fast_switch_enabled) { if (sg_policy->next_freq == next_freq) { trace_cpu_frequency(policy->cur, smp_processor_id()); return; } sg_policy->next_freq = next_freq; + sg_policy->last_freq_update_time = time; next_freq = cpufreq_driver_fast_switch(policy, next_freq); if (next_freq == CPUFREQ_ENTRY_INVALID) return; @@ -108,6 +107,7 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time, trace_cpu_frequency(next_freq, smp_processor_id()); } else if (sg_policy->next_freq != next_freq) { sg_policy->next_freq = next_freq; + sg_policy->last_freq_update_time = time; sg_policy->work_in_progress = true; irq_work_queue(&sg_policy->irq_work); } -- 2.7.1.410.g6faf27b

8 years

next-20170220 build: 2 failures 9 warnings (next-20170220)

by Build bot for Mark Brown

Tree/Branch: next-20170220 Git describe: next-20170220 Commit: b349d1bbdc Add linux-next specific files for 20170220 Build Time: 99 min 42 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 5 Warnings: 9 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] arm-allmodconfig ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ../drivers/pci/dwc/pci-exynos.c:132:25: error: 'struct exynos_pcie' has no member named 'pp' ../drivers/pci/dwc/pci-exynos.c:162:25: error: 'struct exynos_pcie' has no member named 'pp' ../drivers/pci/dwc/pci-exynos.c:185:25: error: 'struct exynos_pcie' has no member named 'pp' ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm-multi_v7_defconfig 9 warnings 0 mismatches : arm-allmodconfig ------------------------------------------------------------------------------- Errors summary: 5 2 ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] 2 ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) 1 ../drivers/pci/dwc/pci-exynos.c:185:25: error: 'struct exynos_pcie' has no member named 'pp' 1 ../drivers/pci/dwc/pci-exynos.c:162:25: error: 'struct exynos_pcie' has no member named 'pp' 1 ../drivers/pci/dwc/pci-exynos.c:132:25: error: 'struct exynos_pcie' has no member named 'pp' Warnings Summary: 9 2 ../drivers/gpu/drm/sti/sti_vtg.c:392:22: warning: unused variable 'np' [-Wunused-variable] 2 ../drivers/gpu/drm/sti/sti_drv.c:120:13: warning: 'sti_drm_dbg_cleanup' defined but not used [-Wunused-function] 1 ../include/linux/dynamic_debug.h:126:3: warning: 'ept_cfg' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../include/linux/device.h:1478:15: warning: passing argument 1 of 'platform_driver_unregister' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 1 ../include/linux/device.h:1473:20: warning: passing argument 1 of '__platform_driver_register' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 1 ../drivers/iio/adc/rcar-gyroadc.c:429:27: warning: 'num_channels' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/iio/adc/rcar-gyroadc.c:428:23: warning: 'channels' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/iio/adc/rcar-gyroadc.c:426:22: warning: 'sample_width' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/iio/adc/rcar-gyroadc.c:398:26: warning: 'adcmode' may be used uninitialized in this function [-Wmaybe-uninitialized] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/gpu/drm/sti/sti_vtg.c:392:22: warning: unused variable 'np' [-Wunused-variable] ../drivers/gpu/drm/sti/sti_drv.c:120:13: warning: 'sti_drm_dbg_cleanup' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 5 errors, 9 warnings, 0 section mismatches Errors: ../kernel/sched/core.c:198:25: error: 'paravirt_steal_rq_enabled' undeclared (first use in this function) ../kernel/sched/core.c:199:11: error: implicit declaration of function 'paravirt_steal_clock' [-Werror=implicit-function-declaration] ../drivers/pci/dwc/pci-exynos.c:132:25: error: 'struct exynos_pcie' has no member named 'pp' ../drivers/pci/dwc/pci-exynos.c:162:25: error: 'struct exynos_pcie' has no member named 'pp' ../drivers/pci/dwc/pci-exynos.c:185:25: error: 'struct exynos_pcie' has no member named 'pp' Warnings: ../drivers/iio/adc/rcar-gyroadc.c:429:27: warning: 'num_channels' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/iio/adc/rcar-gyroadc.c:426:22: warning: 'sample_width' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/iio/adc/rcar-gyroadc.c:428:23: warning: 'channels' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/iio/adc/rcar-gyroadc.c:398:26: warning: 'adcmode' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/gpu/drm/sti/sti_vtg.c:392:22: warning: unused variable 'np' [-Wunused-variable] ../drivers/gpu/drm/sti/sti_drv.c:120:13: warning: 'sti_drm_dbg_cleanup' defined but not used [-Wunused-function] ../include/linux/device.h:1473:20: warning: passing argument 1 of '__platform_driver_register' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] ../include/linux/device.h:1478:15: warning: passing argument 1 of 'platform_driver_unregister' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] ../include/linux/dynamic_debug.h:126:3: warning: 'ept_cfg' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm-multi_v5_defconfig x86_64-defconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig

8 years

v4.10 build: 0 failures 0 warnings (v4.10)

by Build bot for Mark Brown

Tree/Branch: v4.10 Git describe: v4.10 Commit: c470abd4fd Linux 4.10 Build Time: 109 min 20 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years

master build: 0 failures 0 warnings (v4.10-rc8-86-g137d01d)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-rc8-86-g137d01d Commit: 137d01df51 Fix missing sanity check in /dev/sg Build Time: 109 min 15 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years

master build: 0 failures 0 warnings (v4.10-rc8-84-g00ea1ce)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-rc8-84-g00ea1ce Commit: 00ea1ceebe ipv6: release dst on error in ip6_dst_lookup_tail Build Time: 109 min 24 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years

master build: 0 failures 0 warnings (v4.10-rc8-83-g2763f92)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.10-rc8-83-g2763f92 Commit: 2763f92f85 Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Build Time: 109 min 19 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

8 years

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linaro-kernel February 2017