From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Wilck Subject: Re: [PATCH 3/4] libmultipath: path latency: simplify getprio() Date: Mon, 20 Nov 2017 09:46:46 +0100 Message-ID: <1511167606.25459.21.camel@suse.com> References: <20171118001134.26622-1-mwilck@suse.com> <20171118001134.26622-4-mwilck@suse.com> <74584b90-53c7-341e-d422-dca85c267c90@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <74584b90-53c7-341e-d422-dca85c267c90@huawei.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Guan Junxiong , Christophe Varoqui Cc: dm-devel@redhat.com, niuhaoxin , "Shenhong (C)" List-Id: dm-devel.ids SGVsbG8gR3VhbiwKCj4gT24gMjAxNy8xMS8xOCA4OjExLCBNYXJ0aW4gV2lsY2sgd3JvdGU6Cj4g PiBUaGUgbG9nIHN0YW5kYXJkIGRldmlhdGlvbiBjYW4gYmUgY2FsY3VsYXRlZCBtdWNoIG1vcmUg c2ltcGx5Cj4gPiBieSByZWFsaXppbmcKPiA+IAo+ID4gICAgc3VtX24gKHhfaSAtIGF2Zyh4KSle MiA9PSBzdW1fbiB4X2leMiAtIG4gKiBhdmcoeCleMgo+ID4gCj4gCj4gSSBkZXJpdmUgdGhlIGVx dWF0aW9uOgo+ICBzdW1fbiB7KHhfaSAtIGF2Zyh4KSleMn0gPSBzdW1fbnt4X2leMiAtMip4X2kq YXZnKHgpICsgYXZnKHgpXjJ9Cj4gICAgICAgICAgICAgICAgICAgICAgICAgICA9IHN1bV9ue3hf aV4yfSAtIDIqYXZnKHgpKnN1bV9ue3hfaX0gKwo+IHN1bV9ue2F2Zyh4KV4yfQo+ICAgICAgICAg ICAgICAgICAgICAgICAgICAgPSBzdW1fbnt4X2leMn0gLSAyKmF2Zyh4KSphdmcoeCkgKwo+IG4q YXZnKHgpXjIKPiAgICAgICAgICAgICAgICAgICAgICAgICAgID0gIHN1bV9ue3hfaV4yfSArIChu LTIpKmF2Zyh4KV4yCgpObywgdGhhdCdzIHdyb25nOgoKICAgIGF2Zyh4KSA9ICgxL24pICogc3Vt X24oeF9pKQo9PiAgc3VtX24oeF9pKSA9IG4gKiBhdmcoeCkKClRodXMgdGhlIDJuZCB0ZXJtIGlu IHRoZSBsaW5lIGJlZm9yZSB0aGUgbGFzdCBpbiB5b3VyIGRlcml2YXRpb24KaXMgbm90ICItIDIq YXZnKHgpKmF2Zyh4KSIsIGJ1dCAiLSAyKm4qYXZnKHgpKmF2Zyh4KSIsIGFuZCB0aGUgZW5kCnJl c3VsdCBiZWNvbWVzIHN1bV9uKHhfaV4yKSAtIG4qYXZnKHgpXjIuCgo+IAo+ID4gQWxzbywgdXNl IHRpbWVzcGVjc3ViIHJhdGhlciB0aGFuIHRoZSBjdXN0b20gdGltZXZhbF90b191c2VjLAo+ID4g YW5kIGF2b2lkIHRha2luZyBsb2coMCkuCj4gPiAKPiAKPiBHcmVhdC4KPiAKPiAKPiA+ICsJcHBf cGxfbG9nKDMsICIlczogbGF0ZW5jeSBhdmc9JS4yZSB1bmNlcnRhaW50eT0lLjFmCj4gPiBwcmlv PSVkXG4iLAo+IAo+IGxhdGVuY3kgYXZnIC0+IGxhdGVuY3kgZ2VvbWV0cmljIGF2ZyA/IEJlY2F1 c2UgaW4gbW9zdCBjYXNlcywKPiBhdmcgbWVhbnMgYXJpdGhtZXRpYyBhdmcgLCBidXQgaW4gdGhp cyBjYXNlLCBpdCBtZWFucyBnZW9tZXRyaWMgYXZnLgoKWWVzLCBJIG1lYW50IHRoZSBnZW9tZXRy aWMgYXZlcmFnZS4gSSBkb24ndCB0aGluayB3ZSBzaG91bGQgYm90aGVyIHRoZQp1c2VyIHdpdGgg dGhlc2Ugc3VidGxldGllcy4gV2VsbCwgbWF5YmUgaXQgd291bGQgZmVlbCBiZXR0ZXIgaWYgd2Un ZAp1c2UgImdlb21ldHJpYyBtZWFuIiByYXRoZXIgdGhhbiAiYXZnIiBpbiB0aGUgbG9nIG1lc3Nh Z2UsIGFsaG91Z2ggdGhhdAptaWdodCBhZ2FpbiBpcnJpdGF0ZSBzb21lIHBlb3BsZSB3aG8gZG9u J3Qga25vdyB0aGUgdGVybSAuLi4gSSByZWFsbHkKZG9uJ3QgY2FyZSBtdWNoLgoKPiA+ICsJCSAg cHAtPmRldiwgZXhwKGxnX2F2Z2xhdGVuY3kgKiBsZ19iYXNlKSwKPiA+ICsJCSAgZXhwKHN0YW5k YXJkX2RldmlhdGlvbiAqIGxnX2Jhc2UpLCByYyk7Cj4gCj4gSG93IGNhbiB5b3UgZ2V0IHRoZSB1 bmNlcnRhaW50eSBvZiBMb2ctbm9ybWFsIGRpc3RyaWJ1dGlvbgo+IGlzIHRoZSBleHAoc3RhbmRh cmRfZGV2aWF0aW9uICogbGdfYmFzZSkgPwoKVGhlICJ3aWR0aCIgb2YgdGhlIG5vcm1hbCBkaXN0 cmlidXRpb24gaXMgbWVhc3VyZWQgaW4gdGVybXMgb2YgdGhlCnN0YW5kYXJkIGRldmlhdGlvbiwg c2lnbWEuIEluIHlvdXIgcGF0Y2gsIHlvdSBjb3JyZWN0bHkgYWNjb3VudGVkIGZvcgp0aGUgY29u ZmlkZW5jZSBsZXZlbHMgb2YgdGhlIDIqc2lnbWEgZW52aXJvbm1lbnQgCihodHRwczovL2VuLndp a2lwZWRpYS5vcmcvd2lraS82OCVFMiU4MCU5Mzk1JUUyJTgwJTkzOTkuN19ydWxlKS4KCkhlcmUs IHdlJ3JlIGFzc3VtaW5nIGEgbG9nLW5vcm1hbCBkaXN0cmlidXRpb24gZm9yIHRoZSBsYXRlbmN5 IChpdCdzIGEKcHJhY3RpY2FsIGFzc3VtcHRpb24sIG5vdCBhIHN0YXRpc3RpY2FsIGFzc2VydGlv biAtIGluIHJlYWxpdHkgdGhlCmxhdGVuY3kgcHJvYmFibHkgcmF0aGVyIGZvbGxvd3MgYW4gZXhw b25lbnRpYWwgb3IgUG9pc3NvbiBkaXN0cmlidXRpb24KYnV0IHdlIGRvbid0IG5lZWQgdG8gZ28g aW50byB0aGF0IGRldGFpbCkuIFRoYXQgbWVhbnMgd2UncmUgYXNzdW1pbmcKdGhhdCBsb2cobGF0 ZW5jeSkgY2FuIGJlIGRlc2NyaWJlZCBieSBhIG5vcm1hbCBkaXN0cmlidXRpb24gd2l0aCBhCmNl cnRhaW4gc3RhbmRhcmQgZGV2aWF0aW9uIHNpZ21hIGFyb3VuZCB0aGUgbG9nIG9mIHRoZSBnZW9t ZXRyaWMgbWVhbi4KQWdhaW4sIHNpZ21hIGlzIHRoZSAid2lkdGgiIG9mIHRoYXQgbm9ybWFsIGRp c3RyaWJ1dGlvbi4gVGh1cyB3aXRoIH42OCUKcHJvYmFiaWxpdHksIHRoZSBsb2cgb2YgdGhlIHRo ZSBsYXRlbmN5IGlzIGluIHRoZSAxLXNpZ21hIGludGVydmFsCmFyb3VuZCB0aGUgYXZlcmFnZS4g VHJhbnNsYXRpbmcgdGhhdCBiYWNrIGludG8gInJlYWwiIGxhdGVuY3ksIHdpdGggNjglCmxpa2Vs eWhvb2QgaXQgd2lsbCBiZSBpbiB0aGUgaW50ZXJ2YWwgWygxL0YpICogZ20sIEYqZ21dLCB3aGVy ZSBnbSBpcwp0aGUgZ2VvbWV0cmljIG1lYW4gYW5kIEY9ZXhwKHNpZ21hKS4gVGhlcmVmb3JlLCBG ICh3aGljaCBpcwpleHAoc3RhbmRhcmRfZGV2aWF0aW9uICogbGdfYmFzZSkpIGNhbiBiZSB1c2Vk IGFzIGFuIGVzdGltYXRlIG9mIHRoZQoidW5jZXJ0YWludHkgZmFjdG9yIiBmb3IgdGhlIGxhdGVu Y3kuCgpBZ3JlZWQ/CgpSZWdhcmRzCk1hcnRpbgoKLS0gCkRyLiBNYXJ0aW4gV2lsY2sgPG13aWxj a0BzdXNlLmNvbT4sIFRlbC4gKzQ5ICgwKTkxMSA3NDA1MyAyMTA3ClNVU0UgTGludXggR21iSCwg R0Y6IEZlbGl4IEltZW5kw7ZyZmZlciwgSmFuZSBTbWl0aGFyZCwgR3JhaGFtIE5vcnRvbgpIUkIg MjEyODQgKEFHIE7DvHJuYmVyZykKCi0tCmRtLWRldmVsIG1haWxpbmcgbGlzdApkbS1kZXZlbEBy ZWRoYXQuY29tCmh0dHBzOi8vd3d3LnJlZGhhdC5jb20vbWFpbG1hbi9saXN0aW5mby9kbS1kZXZl bA==