From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH v4 13/26] x86/cpu: Sysctl and common infrastructure for levelling context switching Date: Wed, 23 Mar 2016 16:36:16 +0000 Message-ID: <1458750989-28967-14-git-send-email-andrew.cooper3@citrix.com> References: <1458750989-28967-1-git-send-email-andrew.cooper3@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1458750989-28967-1-git-send-email-andrew.cooper3@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Xen-devel Cc: Andrew Cooper , Jan Beulich List-Id: xen-devel@lists.xenproject.org QSB0b29sc3RhY2sgbmVlZHMgdG8ga25vdyBob3cgbXVjaCBjb250cm9sIFhlbiBoYXMgb3ZlciB0 aGUgdmlzaWJsZSBjcHVpZAp2YWx1ZXMgaW4gUFYgZ3Vlc3RzLiAgUHJvdmlkZSBhbiBleHBsaWNp dCBtZWNoYW5pc20gdG8gcXVlcnkgd2hhdCBYZW4gaXMKY2FwYWJsZSBvZi4KClRoaXMgaW50ZXJm YWNlIHdpbGwgY3VycmVudGx5IHJlcG9ydCBubyBjYXBhYmlsaXRpZXMuICBUaGlzIGNoYW5nZSBp cwpzY2FmZm9sZGluZyBmb3IgZnV0dXJlIHBhdGNoZXMsIHdoaWNoIHdpbGwgaW50cm9kdWNlIGRl dGVjdGlvbiBhbmQgc3dpdGNoaW5nCmxvZ2ljLCBhZnRlciB3aGljaCB0aGUgaW50ZXJmYWNlIHdp bGwgcmVwb3J0IGhhcmR3YXJlIGNhcGFiaWxpdGllcyBjb3JyZWN0bHkuCgpTaWduZWQtb2ZmLWJ5 OiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPgotLS0KQ0M6IEphbiBC ZXVsaWNoIDxKQmV1bGljaEBzdXNlLmNvbT4KCnYyOgogKiBzL2NwdW1hc2tzL2NwdWlkbWFza3Mv CnYzOgogKiBSZWludHJvZHVjZSBYRU5fU1lTQ1RMX2dldF9sZXZlbGxpbmdfY2FwcyAocmVxdWVz dGVkIGJ5IEpvYW8gZm9yIHNvbWUKICAgZGV2ZWxvcG1lbnQgaGUgaGFzIHBsYW5uZWQpLgogKiBS ZW5hbWUgdG8gWEVOX1NZU0NUTF9nZXRfY3B1X2xldmVsbGluZ19jYXBzLCBhbmQgcmVuYW1lIHRo ZSBjb25zdGFudHMgdG8KICAgbWF0Y2ggdGhlIFhlbiBjb21tYW5kIGxpbmUgb3B0aW9ucy4KdjQ6 CiAqIE1vdmUgZGVjbGFyYXRpb25zIGZyb20gcHJvY2Vzc29yLmggdG8gY3B1aWQuaAogKiBBUEkg Y29ycmVjdGlvbnMgZm9yIFhFTl9TWVNDVExfZ2V0X2xldmVsbGluZ19jYXBzCi0tLQogeGVuL2Fy Y2gveDg2L2NwdS9jb21tb24uYyAgICAgICAgfCAgNiArKysrKysKIHhlbi9hcmNoL3g4Ni9zeXNj dGwuYyAgICAgICAgICAgIHwgIDYgKysrKysrCiB4ZW4vaW5jbHVkZS9hc20teDg2L2NwdWZlYXR1 cmUuaCB8ICAxICsKIHhlbi9pbmNsdWRlL2FzbS14ODYvY3B1aWQuaCAgICAgIHwgMzIgKysrKysr KysrKysrKysrKysrKysrKysrKysrKysrKysKIHhlbi9pbmNsdWRlL3B1YmxpYy9zeXNjdGwuaCAg ICAgIHwgMjMgKysrKysrKysrKysrKysrKysrKysrKysKIDUgZmlsZXMgY2hhbmdlZCwgNjggaW5z ZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL3hlbi9hcmNoL3g4Ni9jcHUvY29tbW9uLmMgYi94ZW4v YXJjaC94ODYvY3B1L2NvbW1vbi5jCmluZGV4IGI1YzAyM2YuLjdlZjc1YjAgMTAwNjQ0Ci0tLSBh L3hlbi9hcmNoL3g4Ni9jcHUvY29tbW9uLmMKKysrIGIveGVuL2FyY2gveDg2L2NwdS9jb21tb24u YwpAQCAtMzYsNiArMzYsMTIgQEAgaW50ZWdlcl9wYXJhbSgiY3B1aWRfbWFza19leHRfZWN4Iiwg b3B0X2NwdWlkX21hc2tfZXh0X2VjeCk7CiB1bnNpZ25lZCBpbnQgb3B0X2NwdWlkX21hc2tfZXh0 X2VkeCA9IH4wdTsKIGludGVnZXJfcGFyYW0oImNwdWlkX21hc2tfZXh0X2VkeCIsIG9wdF9jcHVp ZF9tYXNrX2V4dF9lZHgpOwogCit1bnNpZ25lZCBpbnQgX19pbml0ZGF0YSBleHBlY3RlZF9sZXZl bGxpbmdfY2FwOwordW5zaWduZWQgaW50IF9fcmVhZF9tb3N0bHkgbGV2ZWxsaW5nX2NhcHM7CisK K0RFRklORV9QRVJfQ1BVKHN0cnVjdCBjcHVpZG1hc2tzLCBjcHVpZG1hc2tzKTsKK3N0cnVjdCBj cHVpZG1hc2tzIF9fcmVhZF9tb3N0bHkgY3B1aWRtYXNrX2RlZmF1bHRzOworCiBjb25zdCBzdHJ1 Y3QgY3B1X2RldiAqX19yZWFkX21vc3RseSBjcHVfZGV2c1tYODZfVkVORE9SX05VTV0gPSB7fTsK IAogdW5zaWduZWQgaW50IHBhZGRyX2JpdHMgX19yZWFkX21vc3RseSA9IDM2OwpkaWZmIC0tZ2l0 IGEveGVuL2FyY2gveDg2L3N5c2N0bC5jIGIveGVuL2FyY2gveDg2L3N5c2N0bC5jCmluZGV4IDU4 Y2JkNzAuLmY2OGNiZWMgMTAwNjQ0Ci0tLSBhL3hlbi9hcmNoL3g4Ni9zeXNjdGwuYworKysgYi94 ZW4vYXJjaC94ODYvc3lzY3RsLmMKQEAgLTE5MCw2ICsxOTAsMTIgQEAgbG9uZyBhcmNoX2RvX3N5 c2N0bCgKICAgICAgICAgfQogICAgICAgICBicmVhazsKIAorICAgIGNhc2UgWEVOX1NZU0NUTF9n ZXRfY3B1X2xldmVsbGluZ19jYXBzOgorICAgICAgICBzeXNjdGwtPnUuY3B1X2xldmVsbGluZ19j YXBzLmNhcHMgPSBsZXZlbGxpbmdfY2FwczsKKyAgICAgICAgaWYgKCBfX2NvcHlfZmllbGRfdG9f Z3Vlc3QodV9zeXNjdGwsIHN5c2N0bCwgdS5jcHVfbGV2ZWxsaW5nX2NhcHMuY2FwcykgKQorICAg ICAgICAgICAgcmV0ID0gLUVGQVVMVDsKKyAgICAgICAgYnJlYWs7CisKICAgICBkZWZhdWx0Ogog ICAgICAgICByZXQgPSAtRU5PU1lTOwogICAgICAgICBicmVhazsKZGlmZiAtLWdpdCBhL3hlbi9p bmNsdWRlL2FzbS14ODYvY3B1ZmVhdHVyZS5oIGIveGVuL2luY2x1ZGUvYXNtLXg4Ni9jcHVmZWF0 dXJlLmgKaW5kZXggZTI5YjAyNC4uODRkMzIyMCAxMDA2NDQKLS0tIGEveGVuL2luY2x1ZGUvYXNt LXg4Ni9jcHVmZWF0dXJlLmgKKysrIGIveGVuL2luY2x1ZGUvYXNtLXg4Ni9jcHVmZWF0dXJlLmgK QEAgLTgxLDYgKzgxLDcgQEAKICNkZWZpbmUgY3B1X2hhc194c2F2ZWMJCWJvb3RfY3B1X2hhcyhY ODZfRkVBVFVSRV9YU0FWRUMpCiAjZGVmaW5lIGNwdV9oYXNfeGdldGJ2MQkJYm9vdF9jcHVfaGFz KFg4Nl9GRUFUVVJFX1hHRVRCVjEpCiAjZGVmaW5lIGNwdV9oYXNfeHNhdmVzCQlib290X2NwdV9o YXMoWDg2X0ZFQVRVUkVfWFNBVkVTKQorI2RlZmluZSBjcHVfaGFzX2h5cGVydmlzb3IJYm9vdF9j cHVfaGFzKFg4Nl9GRUFUVVJFX0hZUEVSVklTT1IpCiAKIGVudW0gX2NhY2hlX3R5cGUgewogICAg IENBQ0hFX1RZUEVfTlVMTCA9IDAsCmRpZmYgLS1naXQgYS94ZW4vaW5jbHVkZS9hc20teDg2L2Nw dWlkLmggYi94ZW4vaW5jbHVkZS9hc20teDg2L2NwdWlkLmgKaW5kZXggNDcyNTY3Mi4uOWEyMWMy NSAxMDA2NDQKLS0tIGEveGVuL2luY2x1ZGUvYXNtLXg4Ni9jcHVpZC5oCisrKyBiL3hlbi9pbmNs dWRlL2FzbS14ODYvY3B1aWQuaApAQCAtMyw2ICszLDcgQEAKIAogI2luY2x1ZGUgPGFzbS9jcHVm ZWF0dXJlc2V0Lmg+CiAjaW5jbHVkZSA8YXNtL2NwdWlkLWF1dG9nZW4uaD4KKyNpbmNsdWRlIDxh c20vcGVyY3B1Lmg+CiAKICNkZWZpbmUgRlNDQVBJTlRTIEZFQVRVUkVTRVRfTlJfRU5UUklFUwog CkBAIC0xOCw2ICsxOSw3IEBACiAKICNpZm5kZWYgX19BU1NFTUJMWV9fCiAjaW5jbHVkZSA8eGVu L3R5cGVzLmg+CisjaW5jbHVkZSA8cHVibGljL3N5c2N0bC5oPgogCiBleHRlcm4gY29uc3QgdWlu dDMyX3Qga25vd25fZmVhdHVyZXNbRlNDQVBJTlRTXTsKIGV4dGVybiBjb25zdCB1aW50MzJfdCBz cGVjaWFsX2ZlYXR1cmVzW0ZTQ0FQSU5UU107CkBAIC0zMSw2ICszMywzNiBAQCB2b2lkIGNhbGN1 bGF0ZV9mZWF0dXJlc2V0cyh2b2lkKTsKIAogY29uc3QgdWludDMyX3QgKmxvb2t1cF9kZWVwX2Rl cHModWludDMyX3QgZmVhdHVyZSk7CiAKKy8qCisgKiBFeHBlY3RlZCBsZXZlbGxpbmcgY2FwYWJp bGl0aWVzIChnaXZlbiBjcHVpZCB2ZW5kb3IvZmFtaWx5IGluZm9ybWF0aW9uKSwKKyAqIGFuZCBs ZXZlbGxpbmcgY2FwYWJpbGl0aWVzIGFjdHVhbGx5IGF2YWlsYWJsZSAoZ2l2ZW4gTVNSIHByb2Jp bmcpLgorICovCisjZGVmaW5lIExDQVBfZmF1bHRpbmcgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBf ZmF1bHRpbmcKKyNkZWZpbmUgTENBUF8xY2QgICAgICAoWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBf ZWN4IHwgICAgICAgIFwKKyAgICAgICAgICAgICAgICAgICAgICAgWEVOX1NZU0NUTF9DUFVfTEVW RUxDQVBfZWR4KQorI2RlZmluZSBMQ0FQX2UxY2QgICAgIChYRU5fU1lTQ1RMX0NQVV9MRVZFTENB UF9leHRkX2VjeCB8ICAgXAorICAgICAgICAgICAgICAgICAgICAgICBYRU5fU1lTQ1RMX0NQVV9M RVZFTENBUF9leHRkX2VkeCkKKyNkZWZpbmUgTENBUF9EYTEgICAgICBYRU5fU1lTQ1RMX0NQVV9M RVZFTENBUF94c2F2ZV9lYXgKKyNkZWZpbmUgTENBUF82YyAgICAgICBYRU5fU1lTQ1RMX0NQVV9M RVZFTENBUF90aGVybWFsX2VjeAorI2RlZmluZSBMQ0FQXzdhYjAgICAgIChYRU5fU1lTQ1RMX0NQ VV9MRVZFTENBUF9sN3MwX2VheCB8ICAgXAorICAgICAgICAgICAgICAgICAgICAgICBYRU5fU1lT Q1RMX0NQVV9MRVZFTENBUF9sN3MwX2VieCkKK2V4dGVybiB1bnNpZ25lZCBpbnQgZXhwZWN0ZWRf bGV2ZWxsaW5nX2NhcCwgbGV2ZWxsaW5nX2NhcHM7CisKK3N0cnVjdCBjcHVpZG1hc2tzCit7Cisg ICAgdWludDY0X3QgXzFjZDsKKyAgICB1aW50NjRfdCBlMWNkOworICAgIHVpbnQ2NF90IERhMTsK KyAgICB1aW50NjRfdCBfNmM7CisgICAgdWludDY0X3QgXzdhYjA7Cit9OworCisvKiBQZXIgQ1BV IHNoYWRvd3Mgb2YgbWFza2luZyBNU1IgdmFsdWVzLCBmb3IgbGF6eSBjb250ZXh0IHN3aXRjaGlu Zy4gKi8KK0RFQ0xBUkVfUEVSX0NQVShzdHJ1Y3QgY3B1aWRtYXNrcywgY3B1aWRtYXNrcyk7CisK Ky8qIERlZmF1bHQgbWFza2luZyBNU1IgdmFsdWVzLCBjYWxjdWxhdGVkIGF0IGJvb3QuICovCitl eHRlcm4gc3RydWN0IGNwdWlkbWFza3MgY3B1aWRtYXNrX2RlZmF1bHRzOworCiAjZW5kaWYgLyog X19BU1NFTUJMWV9fICovCiAjZW5kaWYgLyogIV9fWDg2X0NQVUlEX0hfXyAqLwogCmRpZmYgLS1n aXQgYS94ZW4vaW5jbHVkZS9wdWJsaWMvc3lzY3RsLmggYi94ZW4vaW5jbHVkZS9wdWJsaWMvc3lz Y3RsLmgKaW5kZXggOTY2ODBlYi4uMWFiMTZkYiAxMDA2NDQKLS0tIGEveGVuL2luY2x1ZGUvcHVi bGljL3N5c2N0bC5oCisrKyBiL3hlbi9pbmNsdWRlL3B1YmxpYy9zeXNjdGwuaApAQCAtNzY2LDYg Kzc2NiwyNyBAQCBzdHJ1Y3QgeGVuX3N5c2N0bF90bWVtX29wIHsKIHR5cGVkZWYgc3RydWN0IHhl bl9zeXNjdGxfdG1lbV9vcCB4ZW5fc3lzY3RsX3RtZW1fb3BfdDsKIERFRklORV9YRU5fR1VFU1Rf SEFORExFKHhlbl9zeXNjdGxfdG1lbV9vcF90KTsKIAorLyoKKyAqIFhFTl9TWVNDVExfZ2V0X2Nw dV9sZXZlbGxpbmdfY2FwcyAoeDg2IHNwZWNpZmljKQorICoKKyAqIFJldHVybiBoYXJkd2FyZSBj YXBhYmlsaXRpZXMgY29uY2VybmluZyBtYXNraW5nIG9yIGZhdWx0aW5nIG9mIHRoZSBjcHVpZAor ICogaW5zdHJ1Y3Rpb24gZm9yIFBWIGd1ZXN0cy4KKyAqLworc3RydWN0IHhlbl9zeXNjdGxfY3B1 X2xldmVsbGluZ19jYXBzIHsKKyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBfZmF1bHRp bmcgICAgKDF1bCA8PCAgMCkgLyogQ1BVSUQgZmF1bHRpbmcgICAgKi8KKyNkZWZpbmUgWEVOX1NZ U0NUTF9DUFVfTEVWRUxDQVBfZWN4ICAgICAgICAgKDF1bCA8PCAgMSkgLyogMHgwMDAwMDAwMS5l Y3ggICAgKi8KKyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBfZWR4ICAgICAgICAgKDF1 bCA8PCAgMikgLyogMHgwMDAwMDAwMS5lZHggICAgKi8KKyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVf TEVWRUxDQVBfZXh0ZF9lY3ggICAgKDF1bCA8PCAgMykgLyogMHg4MDAwMDAwMS5lY3ggICAgKi8K KyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBfZXh0ZF9lZHggICAgKDF1bCA8PCAgNCkg LyogMHg4MDAwMDAwMS5lZHggICAgKi8KKyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBf eHNhdmVfZWF4ICAgKDF1bCA8PCAgNSkgLyogMHgwMDAwMDAwRDoxLmVheCAgKi8KKyNkZWZpbmUg WEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBfdGhlcm1hbF9lY3ggKDF1bCA8PCAgNikgLyogMHgwMDAw MDAwNi5lY3ggICAgKi8KKyNkZWZpbmUgWEVOX1NZU0NUTF9DUFVfTEVWRUxDQVBfbDdzMF9lYXgg ICAgKDF1bCA8PCAgNykgLyogMHgwMDAwMDAwNzowLmVheCAgKi8KKyNkZWZpbmUgWEVOX1NZU0NU TF9DUFVfTEVWRUxDQVBfbDdzMF9lYnggICAgKDF1bCA8PCAgOCkgLyogMHgwMDAwMDAwNzowLmVi eCAgKi8KKyAgICB1aW50MzJfdCBjYXBzOworfTsKK3R5cGVkZWYgc3RydWN0IHhlbl9zeXNjdGxf Y3B1X2xldmVsbGluZ19jYXBzIHhlbl9zeXNjdGxfY3B1X2xldmVsbGluZ19jYXBzX3Q7CitERUZJ TkVfWEVOX0dVRVNUX0hBTkRMRSh4ZW5fc3lzY3RsX2NwdV9sZXZlbGxpbmdfY2Fwc190KTsKKwog c3RydWN0IHhlbl9zeXNjdGwgewogICAgIHVpbnQzMl90IGNtZDsKICNkZWZpbmUgWEVOX1NZU0NU TF9yZWFkY29uc29sZSAgICAgICAgICAgICAgICAgICAgMQpAQCAtNzkxLDYgKzgxMiw3IEBAIHN0 cnVjdCB4ZW5fc3lzY3RsIHsKICNkZWZpbmUgWEVOX1NZU0NUTF9wY2l0b3BvaW5mbyAgICAgICAg ICAgICAgICAgICAyMgogI2RlZmluZSBYRU5fU1lTQ1RMX3Bzcl9jYXRfb3AgICAgICAgICAgICAg ICAgICAgIDIzCiAjZGVmaW5lIFhFTl9TWVNDVExfdG1lbV9vcCAgICAgICAgICAgICAgICAgICAg ICAgMjQKKyNkZWZpbmUgWEVOX1NZU0NUTF9nZXRfY3B1X2xldmVsbGluZ19jYXBzICAgICAgICAy NQogICAgIHVpbnQzMl90IGludGVyZmFjZV92ZXJzaW9uOyAvKiBYRU5fU1lTQ1RMX0lOVEVSRkFD RV9WRVJTSU9OICovCiAgICAgdW5pb24gewogICAgICAgICBzdHJ1Y3QgeGVuX3N5c2N0bF9yZWFk Y29uc29sZSAgICAgICByZWFkY29uc29sZTsKQEAgLTgxNiw2ICs4MzgsNyBAQCBzdHJ1Y3QgeGVu X3N5c2N0bCB7CiAgICAgICAgIHN0cnVjdCB4ZW5fc3lzY3RsX3Bzcl9jbXRfb3AgICAgICAgIHBz cl9jbXRfb3A7CiAgICAgICAgIHN0cnVjdCB4ZW5fc3lzY3RsX3Bzcl9jYXRfb3AgICAgICAgIHBz cl9jYXRfb3A7CiAgICAgICAgIHN0cnVjdCB4ZW5fc3lzY3RsX3RtZW1fb3AgICAgICAgICAgIHRt ZW1fb3A7CisgICAgICAgIHN0cnVjdCB4ZW5fc3lzY3RsX2NwdV9sZXZlbGxpbmdfY2FwcyBjcHVf bGV2ZWxsaW5nX2NhcHM7CiAgICAgICAgIHVpbnQ4X3QgICAgICAgICAgICAgICAgICAgICAgICAg ICAgIHBhZFsxMjhdOwogICAgIH0gdTsKIH07Ci0tIAoyLjEuNAoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVu LWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==