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Fri, 01 Nov 2019 12:14:26 -0700 (PDT) Date: Fri, 1 Nov 2019 12:14:25 -0700 From: Guenter Roeck To: Akinobu Mita Subject: Re: [PATCH v3] nvme: Add hardware monitoring support Message-ID: <20191101191425.GA16792@roeck-us.net> References: <20191101035646.25644-1-linux@roeck-us.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191101_121428_769581_5AA29DCF X-CRM114-Status: GOOD ( 16.69 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagi Grimberg , Linux PM , LKML , linux-nvme@lists.infradead.org, Jens Axboe , Keith Busch , Christoph Hellwig , Chris Healy Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org T24gU2F0LCBOb3YgMDIsIDIwMTkgYXQgMDE6MTk6MDNBTSArMDkwMCwgQWtpbm9idSBNaXRhIHdy b3RlOgo+IDIwMTnlubQxMeaciDHml6Uo6YeRKSAxMjo1NiBHdWVudGVyIFJvZWNrIDxsaW51eEBy b2Vjay11cy5uZXQ+Ogo+ID4gK3ZvaWQgbnZtZV9od21vbl9pbml0KHN0cnVjdCBudm1lX2N0cmwg KmN0cmwpCj4gPiArewo+ID4gKyAgICAgICBzdHJ1Y3QgZGV2aWNlICpkZXYgPSBjdHJsLT5kZXZp Y2U7Cj4gCj4gU2hvdWxkIHdlIHVzZSAnY3RybC0+ZGV2JyBpbnN0ZWFkIG9mICdjdHJsLT5kZXZp Y2UnPwo+IAoKRXhjZWxsZW50IHBvaW50LCBhbmQgbW9zdCBkZWZpbml0ZWx5IHllcy4gSSBzaG91 bGQgaGF2ZSBkb25lIHRoYXQKZnJvbSB0aGUgYmVnaW5uaW5nLgoKPiBUaGUgJ2N0cmwtPmRldmlj ZScgaXMgYSBwb2ludGVyIHRvIGNoYXIgZGV2aWNlIGFuZCB0aGUgJy0+b2Zfbm9kZScgbWVtYmVy Cj4gaXMgTlVMTC4KPiAKPiBTbyBpZiBkZXZtX2h3bW9uX2RldmljZV9yZWdpc3Rlcl93aXRoX2lu Zm8oKSAoaS5lLiBfX2h3bW9uX2RldmljZV9yZWdpc3RlcikKPiBpcyBjYWxsZWQgd2l0aCAnY3Ry bC0+ZGV2aWNlJywgaXQgZG9lc24ndCBhdHRlbXB0IHRvIHJlZ2lzdGVyIGEgc2Vuc29yIHRvIGEK PiBEVCB0aGVybWFsIHpvbmUgKGkuZS4gaHdtb25fdGhlcm1hbF9hZGRfc2Vuc29yKCkgaXMgbm90 IGNhbGxlZCBhdCBhbGwpLgo+IAo+IFRoaXMgY2hhbmdlIHdhcyByZXF1aXJlZCwgd2hlbiBJIHRy aWVkIHRoaXMgbnZtZSBod21vbiBwYXRjaCB3aXRoIHRoZQo+IGZvbGxvd2luZyBEVCB0aGVybWFs IHNldHVwLgo+IAo+IGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2xpbnV4LWRldmljZXRyZWUvMTU2 MTk5MDM1NC00MDg0LTMtZ2l0LXNlbmQtZW1haWwtYWtpbm9idS5taXRhQGdtYWlsLmNvbS8KPiAK PiA+ICsgICAgICAgc3RydWN0IG52bWVfaHdtb25fZGF0YSAqZGF0YTsKPiA+ICsgICAgICAgc3Ry dWN0IGRldmljZSAqaHdtb247Cj4gPiArICAgICAgIGludCBlcnI7Cj4gPiArCj4gPiArICAgICAg IGRhdGEgPSBkZXZtX2t6YWxsb2MoZGV2LCBzaXplb2YoKmRhdGEpLCBHRlBfS0VSTkVMKTsKPiA+ ICsgICAgICAgaWYgKCFkYXRhKQo+ID4gKyAgICAgICAgICAgICAgIHJldHVybjsKPiA+ICsKPiA+ ICsgICAgICAgZGF0YS0+Y3RybCA9IGN0cmw7Cj4gPiArICAgICAgIG11dGV4X2luaXQoJmRhdGEt PnJlYWRfbG9jayk7Cj4gPiArCj4gPiArICAgICAgIGVyciA9IG52bWVfaHdtb25fZ2V0X3NtYXJ0 X2xvZyhkYXRhKTsKPiA+ICsgICAgICAgaWYgKGVycikgewo+ID4gKyAgICAgICAgICAgICAgIGRl dl93YXJuKGRldiwgIkZhaWxlZCB0byByZWFkIHNtYXJ0IGxvZyAoZXJyb3IgJWQpXG4iLCBlcnIp Owo+ID4gKyAgICAgICAgICAgICAgIGRldm1fa2ZyZWUoZGV2LCBkYXRhKTsKPiA+ICsgICAgICAg ICAgICAgICByZXR1cm47Cj4gPiArICAgICAgIH0KPiA+ICsKPiA+ICsgICAgICAgaHdtb24gPSBk ZXZtX2h3bW9uX2RldmljZV9yZWdpc3Rlcl93aXRoX2luZm8oZGV2LCBkZXZfbmFtZShkZXYpLCBk YXRhLAo+ID4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAmbnZtZV9od21vbl9jaGlwX2luZm8sCj4gPiArICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgIE5VTEwpOwo+IAo+IElmIHRoZSBhYm92ZSBjaGFu Z2UgaXMgYXBwbGllZCwgdGhlIHNlY29uZCAnbmFtZScgYXJndW1lbnQgaXMgY2hhbmdlZAo+IGZy b20gJ252bWUwJyB0byAnMDAwMDowMTowMC4wJyBhcyBhIHNpZGUgZWZmZWN0LiAgU28gd2UgbWF5 IHdhbnQgdG8KPiBjaGFuZ2UgdGhlIHNlY29uZCBhcmd1bWVudCwgdG9vLgo+IAoKWWVzLiBJJ2xs IGp1c3QgbmFtZSBpdCAibnZtZSI7IGFmdGVyIGFsbCwgdGhhdCBpcyBzdWZmaWNpZW50IGFuZCBt b3JlCmNvbnNpc3RlbnQgd2l0aCBvdGhlciBkcml2ZXJzLiBDdXJyZW50bHksIHdlIGdldCBzb21l dGhpbmcgbGlrZQoJbnZtZTAtcGNpLTAxMDAKCW52bWUxLXBjaS0yNTAwCmlmIHRoZXJlIGFyZSBt dWx0aXBsZSBkcml2ZXMsIHdoZXJlIHRoZSAiMCIgYW5kICIxIiBhcmUgbm90IHJlYWxseQpuZWNl c3NhcnkuCgpUaGFua3MhCkd1ZW50ZXIKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCkxpbnV4LW52bWUgbWFpbGluZyBsaXN0CkxpbnV4LW52bWVAbGlzdHMu aW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2xpbnV4LW52bWUK