From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Gao Subject: [Patch v3 1/2] x86/smp: count the number of online physical processor in the system Date: Wed, 9 May 2018 06:01:32 +0800 Message-ID: <1525816893-36669-1-git-send-email-chao.gao@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: xen-devel@lists.xen.org Cc: Andrew Cooper , Jan Beulich , Chao Gao List-Id: xen-devel@lists.xenproject.org TWFpbmx5IGZvciB0aGUgcGF0Y2ggYmVoaW5kIHdoaWNoIHJlbGllcyBvbiAnbnJfcGh5c19jcHVz JyB0byBlc3RpbWF0ZQp0aGUgdGltZSBuZWVkZWQgZm9yIG1pY3JvY29kZSB1cGRhdGUgaW4gdGhl IHdvcnN0IGNhc2UuCgpTaWduZWQtb2ZmLWJ5OiBDaGFvIEdhbyA8Y2hhby5nYW9AaW50ZWwuY29t PgotLS0KdjM6CiAtIG5ldwoKLS0tCiB4ZW4vYXJjaC94ODYvc21wYm9vdC5jICAgIHwgMTMgKysr KysrKysrKysrKwogeGVuL2luY2x1ZGUvYXNtLXg4Ni9zbXAuaCB8ICAzICsrKwogMiBmaWxlcyBj aGFuZ2VkLCAxNiBpbnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0IGEveGVuL2FyY2gveDg2L3NtcGJv b3QuYyBiL3hlbi9hcmNoL3g4Ni9zbXBib290LmMKaW5kZXggODZmYTQxMC4uYzNjMzU1OCAxMDA2 NDQKLS0tIGEveGVuL2FyY2gveDg2L3NtcGJvb3QuYworKysgYi94ZW4vYXJjaC94ODYvc21wYm9v dC5jCkBAIC02Nyw2ICs2Nyw4IEBAIHVuc2lnbmVkIGludCBfX3JlYWRfbW9zdGx5IG5yX3NvY2tl dHM7CiBjcHVtYXNrX3QgKipfX3JlYWRfbW9zdGx5IHNvY2tldF9jcHVtYXNrOwogc3RhdGljIGNw dW1hc2tfdCAqc2Vjb25kYXJ5X3NvY2tldF9jcHVtYXNrOwogCit1bnNpZ25lZCBpbnQgX19yZWFk X21vc3RseSBucl9waHlzX2NwdXM7CisKIHN0cnVjdCBjcHVpbmZvX3g4NiBjcHVfZGF0YVtOUl9D UFVTXTsKIAogdTMyIHg4Nl9jcHVfdG9fYXBpY2lkW05SX0NQVVNdIF9fcmVhZF9tb3N0bHkgPQpA QCAtMjYyLDYgKzI2NCwxMCBAQCBzdGF0aWMgdm9pZCBzZXRfY3B1X3NpYmxpbmdfbWFwKGludCBj cHUpCiAgICAgICAgIGNwdW1hc2tfc2V0X2NwdShjcHUsIHBlcl9jcHUoY3B1X3NpYmxpbmdfbWFz aywgY3B1KSk7CiAgICAgfQogCisgICAgLyogSW5jcmVhc2UgcGh5c2ljYWwgcHJvY2Vzc29yIGNv dW50IHdoZW4gYSBuZXcgY3B1IGNvbWVzIHVwICovCisgICAgaWYgKCBjcHVtYXNrX3dlaWdodChw ZXJfY3B1KGNwdV9zaWJsaW5nX21hc2ssIGNwdSkpID09IDEgKQorICAgICAgICBucl9waHlzX2Nw dXMrKzsKKwogICAgIGlmICggY1tjcHVdLng4Nl9tYXhfY29yZXMgPT0gMSApCiAgICAgewogICAg ICAgICBjcHVtYXNrX2NvcHkocGVyX2NwdShjcHVfY29yZV9tYXNrLCBjcHUpLApAQCAtMTE1Niw2 ICsxMTYyLDEzIEBAIHJlbW92ZV9zaWJsaW5naW5mbyhpbnQgY3B1KQogICAgICAgICAgICAgY3B1 X2RhdGFbc2libGluZ10uYm9vdGVkX2NvcmVzLS07CiAgICAgfQogCisgICAgLyoKKyAgICAgKiBE ZWNyZWFzZSBwaHlzaWNhbCBwcm9jZXNzb3IgY291bnQgd2hlbiBhbGwgdGhyZWFkcyBvZiBhIHBo eXNpY2FsCisgICAgICogcHJvY2Vzc29yIGdvIGRvd24KKyAgICAgKi8KKyAgICBpZiAoIGNwdW1h c2tfd2VpZ2h0KHBlcl9jcHUoY3B1X3NpYmxpbmdfbWFzaywgY3B1KSkgPT0gMSApCisgICAgICAg IG5yX3BoeXNfY3B1cy0tOworCiAgICAgZm9yX2VhY2hfY3B1KHNpYmxpbmcsIHBlcl9jcHUoY3B1 X3NpYmxpbmdfbWFzaywgY3B1KSkKICAgICAgICAgY3B1bWFza19jbGVhcl9jcHUoY3B1LCBwZXJf Y3B1KGNwdV9zaWJsaW5nX21hc2ssIHNpYmxpbmcpKTsKICAgICBjcHVtYXNrX2NsZWFyKHBlcl9j cHUoY3B1X3NpYmxpbmdfbWFzaywgY3B1KSk7CmRpZmYgLS1naXQgYS94ZW4vaW5jbHVkZS9hc20t eDg2L3NtcC5oIGIveGVuL2luY2x1ZGUvYXNtLXg4Ni9zbXAuaAppbmRleCA0ZTVmNjczLi45MTA4 ODhhIDEwMDY0NAotLS0gYS94ZW4vaW5jbHVkZS9hc20teDg2L3NtcC5oCisrKyBiL3hlbi9pbmNs dWRlL2FzbS14ODYvc21wLmgKQEAgLTY1LDYgKzY1LDkgQEAgdWludDMyX3QgZ2V0X2N1cl9pZGxl X251bXModm9pZCk7CiAgKi8KIGV4dGVybiB1bnNpZ25lZCBpbnQgbnJfc29ja2V0czsKIAorLyog VGhlIG51bWJlciBvZiBvbmxpbmUgcGh5c2ljYWwgQ1BVcyBpbiB0aGlzIHN5c3RlbSAqLworZXh0 ZXJuIHVuc2lnbmVkIGludCBucl9waHlzX2NwdXM7CisKIHZvaWQgc2V0X25yX3NvY2tldHModm9p ZCk7CiAKIC8qIFJlcHJlc2VudGluZyBIVCBhbmQgY29yZSBzaWJsaW5ncyBpbiBlYWNoIHNvY2tl dC4gKi8KLS0gCjEuOC4zLjEKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9q ZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVu LWRldmVs