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authorBen Skeggs <bskeggs@redhat.com>2017-01-24 09:32:26 +1000
committerBen Skeggs <bskeggs@redhat.com>2017-01-31 20:05:26 +1000
commit2b5078937355c0d662ecef54b7d4d04f48da4fa9 (patch)
tree9e75490ab352bf7d2e4a689ee761656d3dafc7d1 /net/netrom
parent24bf7ae359b8cca165bb30742d2b1c03a1eb23af (diff)
drm/nouveau/kms/nv50: request vblank events for commits that send completion events
This somehow fixes an issue where sync-to-vblank longer works correctly after resume from suspend. From a HW perspective, we don't need the IRQs turned on to be able to detect flip completion, so it's assumed that this is required for the voodoo in the core DRM vblank core. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'net/netrom')
0 files changed, 0 insertions, 0 deletions
n this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/perf/tests/python-use.c')
ch_switch.c?id=0b529f143e8baad441a5aac9ad55ec2434d8fb46'>gss_mech_switch.c
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