/* * (C) 2001 Clemson University and The University of Chicago * * See COPYING in top-level directory. */ /* * Definitions of downcalls used in Linux kernel module. */ #ifndef __DOWNCALL_H #define __DOWNCALL_H /* * Sanitized the device-client core interaction * for clean 32-64 bit usage */ struct orangefs_io_response { __s64 amt_complete; }; struct orangefs_lookup_response { struct orangefs_object_kref refn; }; struct orangefs_create_response { struct orangefs_object_kref refn; }; struct orangefs_symlink_response { struct orangefs_object_kref refn; }; struct orangefs_getattr_response { struct ORANGEFS_sys_attr_s attributes; char link_target[ORANGEFS_NAME_MAX]; }; struct orangefs_mkdir_response { struct orangefs_object_kref refn; }; /* * duplication of some system interface structures so that I don't have * to allocate extra memory */ struct orangefs_dirent { char *d_name; int d_length; struct orangefs_khandle khandle; }; struct orangefs_statfs_response { __s64 block_size; __s64 blocks_total; __s64 blocks_avail; __s64 files_total; __s64 files_avail; }; struct orangefs_fs_mount_response { __s32 fs_id; __s32 id; struct orangefs_khandle root_khandle; }; /* the getxattr response is the attribute value */ struct orangefs_getxattr_response { __s32 val_sz; __s32 __pad1; char val[ORANGEFS_MAX_XATTR_VALUELEN]; }; /* the listxattr response is an array of attribute names */ struct orangefs_listxattr_response { __s32 returned_count; __s32 __pad1; __u64 token; char key[ORANGEFS_MAX_XATTR_LISTLEN * ORANGEFS_MAX_XATTR_NAMELEN]; __s32 keylen; __s32 __pad2; __s32 lengths[ORANGEFS_MAX_XATTR_LISTLEN]; }; struct orangefs_param_response { union { __s64 value64; __s32 value32[2]; } u; }; #define PERF_COUNT_BUF_SIZE 4096 struct orangefs_perf_count_response { char buffer[PERF_COUNT_BUF_SIZE]; }; #define FS_KEY_BUF_SIZE 4096 struct orangefs_fs_key_response { __s32 fs_keylen; __s32 __pad1; char fs_key[FS_KEY_BUF_SIZE]; }; /* 2.9.6 */ struct orangefs_features_response { __u64 features; }; struct orangefs_downcall_s { __s32 type; __s32 status; /* currently trailer is used only by readdir */ __s64 trailer_size; char *trailer_buf; union { struct orangefs_io_response io; struct orangefs_lookup_response lookup; struct orangefs_create_response create; struct orangefs_symlink_response sym; struct orangefs_getattr_response getattr; struct orangefs_mkdir_response mkdir; struct orangefs_statfs_response statfs; struct orangefs_fs_mount_response fs_mount; struct orangefs_getxattr_response getxattr; struct orangefs_listxattr_response listxattr; struct orangefs_param_response param; struct orangefs_perf_count_response perf_count; struct orangefs_fs_key_response fs_key; struct orangefs_features_response features; } resp; }; struct orangefs_readdir_response_s { __u64 token; __u64 directory_version; __u32 __pad2; __u32 orangefs_dirent_outcount; struct orangefs_dirent *dirent_array; }; #endif /* __DOWNCALL_H */ -next.git/commit/net?h=nds-private-remove&id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>net/sunrpc/Kconfig
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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2017-02-03 14:18:39 -0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-04 00:11:08 +0100
commit6e978b22efa1db9f6e71b24440b5f1d93e968ee3 (patch)
treec666f7a26b860674848949e39a610222b0723f89 /net/sunrpc/Kconfig
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 'net/sunrpc/Kconfig')