From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "maier@linux.ibm.com" , "osandov@osandov.com" CC: "lizefan@huawei.com" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "rostedt@goodmis.org" , "mingo@redhat.com" , "axboe@kernel.dk" , "gregkh@linuxfoundation.org" Subject: Re: [PATCH 2/2] tracing/events: block: dev_t via driver core for plug and unplug events Date: Fri, 27 Apr 2018 16:38:05 +0000 Message-ID: <9b5e43db06f6516f7c0e9cc379e0c2964000d4e1.camel@wdc.com> References: <20180413130719.22921-1-maier@linux.ibm.com> <20180413130719.22921-3-maier@linux.ibm.com> <20180415083154.GA12254@kroah.com> <59186bf6-abf1-87b0-914d-eed1b40ef4a8@linux.ibm.com> <20180419192341.GC20941@vader> <8624e2bec853f0bb195966ab54bc42bf15eda0ec.camel@wdc.com> <056d8ee9-5e1d-8219-c24c-9130d6c1dcbf@linux.ibm.com> In-Reply-To: <056d8ee9-5e1d-8219-c24c-9130d6c1dcbf@linux.ibm.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gVHVlLCAyMDE4LTA0LTI0IGF0IDE2OjQ5ICswMjAwLCBTdGVmZmVuIE1haWVyIHdyb3RlOg0K PiBUaGUgb2JqZWN0IGxpZmUgY3ljbGUgc2VlbXMgdG8gYmU6DQo+IA0KPiAoMSkgYmxrX2FsbG9j X3F1ZXVlKCkgYWxzbyBjcmVhdGVzIGdlbmRpc2sga29iag0KDQpJIHRoaW5rIHRoaXMgaXMgYSBt aXNpbnRlcnByZXRhdGlvbi4gYmxrX2FsbG9jX3F1ZXVlX25vZGUoKSBpbml0aWFsaXplcyB0aGUN CnJlcXVlc3QgcXVldWUga29iaiBhcyBmb2xsb3dzOg0KDQoJa29iamVjdF9pbml0KCZxLT5rb2Jq LCAmYmxrX3F1ZXVlX2t0eXBlKTsNCg0KcmVnaXN0ZXJfZGlzaygpIGNyZWF0ZXMgdGhlIC9zeXMv Y2xhc3MvYmxvY2svPGRpc2s+IG5vZGUgYW5kIC9zeXMvYmxvY2svPGRpc2s+DQpsaW5rIGFzIGZv bGxvd3M6DQoNCglpZiAoZGV2aWNlX2FkZChkZGV2KSkNCgkJcmV0dXJuOw0KCWlmICghc3lzZnNf ZGVwcmVjYXRlZCkgew0KCQllcnIgPSBzeXNmc19jcmVhdGVfbGluayhibG9ja19kZXByLCAmZGRl di0+a29iaiwNCgkJCQkJa29iamVjdF9uYW1lKCZkZGV2LT5rb2JqKSk7DQoJCWlmIChlcnIpIHsN CgkJCWRldmljZV9kZWwoZGRldik7DQoJCQlyZXR1cm47DQoJCX0NCgl9DQoNCj4gKDFhKSBTQ1NJ IGRvZXMgTFVOIHByb2JpbmcgSS9PDQo+ICAgICAgbW9zdCBvZiB0aGF0IGlzIGJsa3RyYWNlIFJX QlMgZmllbGQgdmFsdWUgJ04nIGkuZS4gbm9uLVIvVyB3aXRoIGRldl90PT0wDQo+ICAgICAgIHNp bmNlIHEtPmtvYmoucGFyZW50IGlzIHN0aWxsIE5VTEwgd2UgY2Fubm90IGdldCBnZW5kaXNrIGFu ZCB0aHVzIGRldl90DQo+ICAgICAgbmVhciB0aGUgZW5kIGlzIHRoZSBmaXJzdCByZWd1bGFyIHJl YWQgYmxvY2sgSS9PIHdpdGggZGV2X3QhPTANCj4gICAgICAgYXMgYmlvIT1OVUxMIGFuZCBiaV9k aXNrIG9yIHJxX2Rpc2sgYXJlIG5vbi1OVUxMDQo+ICgyKSBibGtfcmVnaXN0ZXJfcXVldWUoKSBh bHNvIGNyZWF0ZXMgcXVldWUga29iaiB3aXRoIGdlbmRpc2sgcGFyZW50DQo+ICAgICBub3cgd2Ug Y2FuIGZvbGxvdyBxLT5rb2JqLnBhcmVudCB0byBnZW5kaXNrIHRvIGdldCBkZXZfdCwNCj4gICAg IGUuZy4gZm9yIFJXQlMgJ04nIHN1Y2ggYXMgaW1wbGljaXQgU0NTSSB0ZXN0IHVuaXQgcmVhZHkg b24gYmxrIGRldiBjbG9zZQ0KDQpQbGVhc2UgaGF2ZSBhIGxvb2sgYXQgdGhlIGRldmljZV9hZGRf ZGlzaygpIGNhbGwgaW4gc2RfcHJvYmVfYXN5bmMoKS4gSSB0aGluaw0KdGhhdCBmdW5jdGlvbiB0 cmlnZ2VycyBhIGNhbGwgb2YgYmxrX3JlZ2lzdGVyX3F1ZXVlKCkuIFRoYXQgbGFzdCBmdW5jdGlv bg0KYXNzb2NpYXRlcyB0aGUgcmVxdWVzdCBxdWV1ZSB3aXRoIHRoZSBnZW5kaXNrIGFzIGZvbGxv d3M6DQoNCglyZXQgPSBrb2JqZWN0X2FkZCgmcS0+a29iaiwga29iamVjdF9nZXQoJmRldi0+a29i aiksICIlcyIsICJxdWV1ZSIpOw0KDQo+ICgzKSBvcHRpb25hbGx5ICJyZWd1bGFyIiBJL08NCj4g KDQpIGJsa191bnJlZ2lzdGVyX3F1ZXVlKCkgY2FsbGVkIGJ5IGRlbF9nZW5kaXNrKCkNCj4gICAg IGRvZXMga29iamVjdF9kZWwoJnEtPmtvYmopIHdoaWNoIE5VTExpZmllcyBxLT5rb2JqLnBhcmVu dCBhZ2Fpbg0KPiAgICAgdGhlIGxhc3QgcHV0IG9mIGdlbmRpc2sgcmVmZXJlbmNlIHJlbGVhc2Vz IGdlbmRpc2sga29iag0KPiAoNSkgYmxrX2NsZWFudXBfcXVldWUoKQ0KPiAgICAgdGhlIGxhc3Qg cHV0IG9mIHF1ZXVlICgvbXEpIHJlZmVyZW5jZSByZWxlYXNlcyBxdWV1ZSAoL21xKSBrb2JqDQoN ClRoZSAvbXEgZGlyZWN0b3J5IGNvcnJlc3BvbmRzIHRvIHEtPm1xX2tvYmouIFRoZSBibG9jayBs YXllciBjb3JlIGRyb3BzIGl0cw0KcmVmZXJlbmNlIHRvIHRoZSBxdWV1ZSBrb2JqZWN0IChxLT5r b2JqKSBieSBjYWxsaW5nIGJsa19wdXRfcXVldWUoKSBhdCB0aGUNCmVuZCBvZiBibGtfY2xlYW51 cF9xdWV1ZSgpLg0KDQo+IFNpbmNlIEkgY2Fubm90IHByb3ZlIGl0J3MgYWx3YXlzIGxpa2UgdGhp cywgSSBmb2xsb3dlZCBCYXJ0J3Mgc3VnZ2VzdGlvbg0KPiBhbmQgYWRkZWQgYW5vdGhlciByZWZj b3VudCBnZXQgYXQgKDIpIGJsa19yZWdpc3Rlcl9xdWV1ZSgpLg0KPiBIb3dldmVyLCB3aGVuIEkg d2FudCB0byBwdXQgdGhhdCBhZGRpdGlvbmFsIHJlZmNvdW50IGF0ICg1KSBibGtfY2xlYW51cF9x dWV1ZSgpLA0KPiB3ZSBvbmx5IGdldCBhIHF1ZXVlIHBvaW50ZXIgYXJndW1lbnQgYXMgY29udGV4 dA0KPiBhbmQgcS0+a29iai5wYXJlbnQ9PU5VTEwgc2luY2UgKDQpLA0KPiBzbyBJIGRvbid0IGtu b3cgaG93IHRvIGdldCB0byB0aGUgZ2VuZGlzayBvYmplY3QgZm9yIHRoZSByZWZjb3VudCBwdXQu DQoNCkhhdmUgeW91IHRyaWVkIHRvIG1vZGlmeSBibGtfcmVnaXN0ZXJfcXVldWUoKSBzdWNoIHRo YXQgaXQgc3RvcmVzIHRoZSBkaXNrDQpwb2ludGVyIGluIGEgbmV3IHN0cnVjdCByZXF1ZXN0X3F1 ZXVlIG1lbWJlcj8NCg0KVGhhbmtzLA0KDQpCYXJ0Lg0KDQoNCg0KDQoNCg0K From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZo6anA5njf5fBPqW1IIGaFZNwx2dr9/LGaN1D90igR0adpxZXjPgTt7IH1asomt97YFPyBZ ARC-Seal: i=1; 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