summaryrefslogtreecommitdiff
path: root/net/tipc/Kconfig
blob: c25a3a149dc4e6d50b20f2ba3ffc5a77d213fdde (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
#
# TIPC configuration
#

menuconfig TIPC
	tristate "The TIPC Protocol"
	depends on INET
	---help---
	  The Transparent Inter Process Communication (TIPC) protocol is
	  specially designed for intra cluster communication. This protocol
	  originates from Ericsson where it has been used in carrier grade
	  cluster applications for many years.

	  For more information about TIPC, see http://tipc.sourceforge.net.

	  This protocol support is also available as a module ( = code which
	  can be inserted in and removed from the running kernel whenever you
	  want). The module will be called tipc. If you want to compile it
	  as a module, say M here and read <file:Documentation/kbuild/modules.txt>.

	  If in doubt, say N.

config TIPC_MEDIA_IB
	bool "InfiniBand media type support"
	depends on TIPC && INFINIBAND_IPOIB
	help
	  Saying Y here will enable support for running TIPC on
	  IP-over-InfiniBand devices.
config TIPC_MEDIA_UDP
	bool "IP/UDP media type support"
	depends on TIPC
	select NET_UDP_TUNNEL
	help
	  Saying Y here will enable support for running TIPC over IP/UDP
	bool
	default y
db9f6e71b24440b5f1d93e968ee3'>tools/testing/radix-tree/Makefile parent3c223c19aea85d3dda1416c187915f4a30b04b1f (diff)
cpufreq: intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on 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/testing/radix-tree/Makefile')