| Message ID | cover.1516209181.git.joseph.salisbury@canonical.com |
|---|---|
| Headers | show |
| Series | Fixes for LP:1743269 | expand |
On Fri, Jan 19, 2018 at 10:41:36AM -0500, Joseph Salisbury wrote: > BugLink: http://bugs.launchpad.net/bugs/1743269 > > == SRU Justification == > Commits b29c6ef7bb12 and 7d5905dc14a8 fix a regression in Artful. They > were both added to mainline in v4.15-rc1 and fix the following two commits: > b29c6ef7bb12 Fixes: 4815d3c56d1e (cpufreq: x86: Make scaling_cur_freq behave more as expected) > 7d5905dc14a8 Fixes: 890da9cf0983 (Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"") > According to the bug report, P-state is not working in Artful, but it was working > in Zesty. This bug is happening on a Lenovo Thinkpad X230 with an Intel Core i5-3210M CPU. > The bug reporter is using CPU scaling to improve battery life. > > == Fixes == > b29c6ef7bb12 ("x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu()") > 7d5905dc14a8 ("x86 / CPU: Always show current CPU frequency in /proc/cpuinfo") > > == Regression Potential == > Low. The two commit fix a current regression and have had additiona upstream reviews > from being send to stable. > > == Test Case == > A test kernel was built with this patch and tested by the original bug reporter. > The bug reporter states the test kernel resolved the bug. > Rafael J. Wysocki (2): > x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() > x86 / CPU: Always show current CPU frequency in /proc/cpuinfo Acked-by: Seth Forshee <seth.forshee@canonical.com> Bionic already got these patches from upstream stable.
On 19/01/18 15:41, Joseph Salisbury wrote: > BugLink: http://bugs.launchpad.net/bugs/1743269 > > == SRU Justification == > Commits b29c6ef7bb12 and 7d5905dc14a8 fix a regression in Artful. They > were both added to mainline in v4.15-rc1 and fix the following two commits: > b29c6ef7bb12 Fixes: 4815d3c56d1e (cpufreq: x86: Make scaling_cur_freq behave more as expected) > 7d5905dc14a8 Fixes: 890da9cf0983 (Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"") > According to the bug report, P-state is not working in Artful, but it was working > in Zesty. This bug is happening on a Lenovo Thinkpad X230 with an Intel Core i5-3210M CPU. > The bug reporter is using CPU scaling to improve battery life. > > == Fixes == > b29c6ef7bb12 ("x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu()") > 7d5905dc14a8 ("x86 / CPU: Always show current CPU frequency in /proc/cpuinfo") > > == Regression Potential == > Low. The two commit fix a current regression and have had additiona upstream reviews > from being send to stable. > > == Test Case == > A test kernel was built with this patch and tested by the original bug reporter. > The bug reporter states the test kernel resolved the bug. > Rafael J. Wysocki (2): > x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() > x86 / CPU: Always show current CPU frequency in /proc/cpuinfo > > arch/x86/kernel/cpu/Makefile | 2 +- > arch/x86/kernel/cpu/aperfmperf.c | 71 +++++++++++++++++++++++++++++----------- > arch/x86/kernel/cpu/cpu.h | 3 ++ > arch/x86/kernel/cpu/proc.c | 6 +++- > fs/proc/cpuinfo.c | 6 ++++ > include/linux/cpufreq.h | 1 + > 6 files changed, 68 insertions(+), 21 deletions(-) > Good test results. Clean cherry pick, and it's in Bionic; gets my OK. Acked-by: Colin Ian King <colin.king@canonical.com>
Applied to artful On 2018-01-19 10:41:36 , Joseph Salisbury wrote: > BugLink: http://bugs.launchpad.net/bugs/1743269 > > == SRU Justification == > Commits b29c6ef7bb12 and 7d5905dc14a8 fix a regression in Artful. They > were both added to mainline in v4.15-rc1 and fix the following two commits: > b29c6ef7bb12 Fixes: 4815d3c56d1e (cpufreq: x86: Make scaling_cur_freq behave more as expected) > 7d5905dc14a8 Fixes: 890da9cf0983 (Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"") > According to the bug report, P-state is not working in Artful, but it was working > in Zesty. This bug is happening on a Lenovo Thinkpad X230 with an Intel Core i5-3210M CPU. > The bug reporter is using CPU scaling to improve battery life. > > == Fixes == > b29c6ef7bb12 ("x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu()") > 7d5905dc14a8 ("x86 / CPU: Always show current CPU frequency in /proc/cpuinfo") > > == Regression Potential == > Low. The two commit fix a current regression and have had additiona upstream reviews > from being send to stable. > > == Test Case == > A test kernel was built with this patch and tested by the original bug reporter. > The bug reporter states the test kernel resolved the bug. > Rafael J. Wysocki (2): > x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() > x86 / CPU: Always show current CPU frequency in /proc/cpuinfo > > arch/x86/kernel/cpu/Makefile | 2 +- > arch/x86/kernel/cpu/aperfmperf.c | 71 +++++++++++++++++++++++++++++----------- > arch/x86/kernel/cpu/cpu.h | 3 ++ > arch/x86/kernel/cpu/proc.c | 6 +++- > fs/proc/cpuinfo.c | 6 ++++ > include/linux/cpufreq.h | 1 + > 6 files changed, 68 insertions(+), 21 deletions(-) > > -- > 2.7.4 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team
BugLink: http://bugs.launchpad.net/bugs/1743269 == SRU Justification == Commits b29c6ef7bb12 and 7d5905dc14a8 fix a regression in Artful. They were both added to mainline in v4.15-rc1 and fix the following two commits: b29c6ef7bb12 Fixes: 4815d3c56d1e (cpufreq: x86: Make scaling_cur_freq behave more as expected) 7d5905dc14a8 Fixes: 890da9cf0983 (Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"") According to the bug report, P-state is not working in Artful, but it was working in Zesty. This bug is happening on a Lenovo Thinkpad X230 with an Intel Core i5-3210M CPU. The bug reporter is using CPU scaling to improve battery life. == Fixes == b29c6ef7bb12 ("x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu()") 7d5905dc14a8 ("x86 / CPU: Always show current CPU frequency in /proc/cpuinfo") == Regression Potential == Low. The two commit fix a current regression and have had additiona upstream reviews from being send to stable. == Test Case == A test kernel was built with this patch and tested by the original bug reporter. The bug reporter states the test kernel resolved the bug. Rafael J. Wysocki (2): x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() x86 / CPU: Always show current CPU frequency in /proc/cpuinfo arch/x86/kernel/cpu/Makefile | 2 +- arch/x86/kernel/cpu/aperfmperf.c | 71 +++++++++++++++++++++++++++++----------- arch/x86/kernel/cpu/cpu.h | 3 ++ arch/x86/kernel/cpu/proc.c | 6 +++- fs/proc/cpuinfo.c | 6 ++++ include/linux/cpufreq.h | 1 + 6 files changed, 68 insertions(+), 21 deletions(-)