From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: usb: don't offload isochronous urb completions to ksoftirq From: Steven Rostedt Message-Id: <20180613183145.17564d82@gandalf.local.home> Date: Wed, 13 Jun 2018 18:31:45 -0400 To: Mikulas Patocka Cc: Alan Stern , Thomas Gleixner , Ming Lei , Greg Kroah-Hartman , USB list , Kernel development list List-ID: T24gV2VkLCAxMyBKdW4gMjAxOCAxNTozMDozMSAtMDQwMCAoRURUKQpNaWt1bGFzIFBhdG9ja2Eg PG1wYXRvY2thQHJlZGhhdC5jb20+IHdyb3RlOgoKPiBPbiBXZWQsIDEzIEp1biAyMDE4LCBBbGFu IFN0ZXJuIHdyb3RlOgo+IAo+ID4gW1N0ZXZlOiBTb3JyeSBmb3IgZHVtcGluZyB5b3UgaW50byB0 aGUgbWlkZGxlIG9mIHRoaXMgZGlzY3Vzc2lvbi4gIAo+ID4gUGxlYXNlIHNlZSBlc3BlY2lhbGx5 IHRoZSBsYXN0IHR3byBwYXJhZ3JhcGhzIGJlbG93LiAgTWlrdWxhcyBpcwo+ID4gZ2V0dGluZyBk cm9wb3V0cyB3aXRoIFVTQiBhdWRpbyBiZWNhdXNlIHBhcnQgb2YgdGhlIHByb2Nlc3NpbmcgdXNl cyBhCj4gPiB0YXNrbGV0Ll0gIAo+IAo+IFRoZSBwcm9ibGVtIGlzIHRoaXM6Cj4gCj4gSSBoYXZl IGEgc2luZ2xlIGNvcmUgbWFjaGluZSB3aXRoIGEgdXNiMiBzb3VuZCBjYXJkLiBXaGVuIEkgaW5j cmVhc2UgdGhlIAo+IHByaW9yaXR5IG9mIGEgbXVzaWMgcGxheWVyLCB0aGUgYXVkaW8gc3RhcnRz IHNraXBwaW5nLgo+IAo+IFRoZSByZWFzb24gZm9yIHRoZSBza2lwcGluZyBpcyB0aGF0IHRoZSBl aGNpIHVzYiBkcml2ZXIgaXMgb2ZmbG9hZGluZyB1cmIgCj4gY2FsbGJhY2tzIHVzaW5nIHRhc2ts ZXRfaGlfc2NoZWR1bGUsIHRoZSBjYWxsYmFja3MgZW5kIHVwIGJlaW5nIG9mZmxvYWRlZCAKPiB0 byB0aGUga3NvZnRpcnFkIHRocmVhZCAodGhhdCBoYXMgcHJpb3JpdHkgMCksIHRoZSBtdXNpYyBw bGF5ZXIgd2l0aCAKPiBlbGV2YXRlZCBwcmlvcml0eSBwcmVlbXB0cyBrc29mdGlycWQgYW5kIGNh dXNlcyBkZWxheXMgaW4gdGhlIHVyYiAKPiBjYWxsYmFja3MuCj4gCj4gSXMgdGhpcyBzb21lIGRl ZmljaWVuY3kgaW4gdGhlIHNvZnRpcnEgc3Vic3lzdGVtPyAoc2hvdWxkIHdlIHBlcmhhcHMgdHJl YXQgCj4gdGFza2xldF9oaSBzcGVjaWFsbHkgYW5kIG5vdCBvZmZsb2FkIGl0IGFzIG11Y2ggYXMg dGhlIG90aGVycz8pIE9yIHNob3VsZCAKPiB0aGUgZWhjaSBkcml2ZXIgYmUgZml4ZWQgbm90IHRv IHVzZSB0YXNrbGV0cz8KPiAKCldoYXQgd2UgZG8gZm9yIHNvZnRpcnFzIGluIHRoZSBSVCBwYXRj aCBpcyB0byBoYXZlIHdob2V2ZXIgcmFpc2VkIHRoZQpzb2Z0aXJxIHJ1biB0aGUgc29mdGlycS4g SWYgbG9jYWxfYmhfZGlzYWJsZWQoKSBpcyBhY3RpdmUgKGJoIGlzCmRpc2FibGVkKSB0aGVuIGEg Yml0IGlzIHNldCBpbiB0aGUgY3VycmVudCB0YXNrIHN0cnVjdCwgd2hlcmUgd2hlbgpsb2NhbF9i aF9lbmFibGUoKSBpcyBjYWxsZWQsIGl0IHdpbGwgdGhlbiBleGVjdXRlIHRoZSBzb2Z0aXJxcyB0 aGF0IGl0CnJhaXNlZCB3aGlsZSBiaCB3YXMgZGlzYWJsZWQuCgpQZXJoYXBzIHRyeSBvdXQgdGhl IFBSRUVNUFRfUlQgcGF0Y2ggYW5kIHNlZSBpZiB0aGUgcHJvYmxlbSBnb2VzIGF3YXkuCkhvcGVm dWxseSB0aGlzIHNvZnRpcnEgd29yayBtYXkgbWFrZSBpdCBpbnRvIHRoZSBrZXJuZWwgc29vbi4g V2UgY291bGQKZXZlbiBlbmFibGVkIGl0IHdpdGhvdXQgZnVsbCBQUkVFTVBUX1JULgoKIGh0dHBz Oi8vbWlycm9ycy5lZGdlLmtlcm5lbC5vcmcvcHViL2xpbnV4L2tlcm5lbC9wcm9qZWN0cy9ydC80 LjE2L3BhdGNoLTQuMTYuMTItcnQ1LnBhdGNoLnh6CgotLSBTdGV2ZQotLS0KVG8gdW5zdWJzY3Jp YmUgZnJvbSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxpbmUgInVuc3Vic2NyaWJlIGxpbnV4LXVzYiIg aW4KdGhlIGJvZHkgb2YgYSBtZXNzYWdlIHRvIG1ham9yZG9tb0B2Z2VyLmtlcm5lbC5vcmcKTW9y ZSBtYWpvcmRvbW8gaW5mbyBhdCAgaHR0cDovL3ZnZXIua2VybmVsLm9yZy9tYWpvcmRvbW8taW5m by5odG1sCg==