From mboxrd@z Thu Jan 1 00:00:00 1970 From: zhoucm1 Subject: Re: [PATCH] drm/syncobj: Avoid kmalloc(GFP_KERNEL) under spinlock Date: Fri, 26 Oct 2018 16:28:21 +0800 Message-ID: <6ff5b159-3b51-25a4-4146-b81e279e6b2b@amd.com> References: <20181026062027.12179-1-david1.zhou@amd.com> <5928d5bb-70d4-cb0c-5a3b-06f30822c0ab@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <5928d5bb-70d4-cb0c-5a3b-06f30822c0ab@gmail.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: christian.koenig@amd.com, Chunming Zhou , dri-devel@lists.freedesktop.org Cc: =?UTF-8?Q?Christian_K=c3=b6nig?= , Julia Lawall , intel-gfx@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org VGhhbmtzLCBDb3VsZCB5b3UgaGVscCB0byBzdWJtaXQgdG8gZHJtLW1pc2MgYWdhaW4/CgotRGF2 aWQKCgpPbiAyMDE45bm0MTDmnIgyNuaXpSAxNTo0MywgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToK PiBBbSAyNi4xMC4xOCB1bSAwODoyMCBzY2hyaWViIENodW5taW5nIFpob3U6Cj4+IGRyaXZlcnMv Z3B1L2RybS9kcm1fc3luY29iai5jOjIwMjo0LTE0OiBFUlJPUjogZnVuY3Rpb24gCj4+IGRybV9z eW5jb2JqX2ZpbmRfc2lnbmFsX3B0X2Zvcl9wb2ludCBjYWxsZWQgb24gbGluZSAzOTAgaW5zaWRl IGxvY2sgCj4+IG9uIGxpbmUgMzg5IGJ1dCB1c2VzIEdGUF9LRVJORUwKPj4KPj4gwqDCoCBGaW5k IGZ1bmN0aW9ucyB0aGF0IHJlZmVyIHRvIEdGUF9LRVJORUwgYnV0IGFyZSBjYWxsZWQgd2l0aCBs b2NrcyAKPj4gaGVsZC4KPj4KPj4gR2VuZXJhdGVkIGJ5OiBzY3JpcHRzL2NvY2NpbmVsbGUvbG9j a3MvY2FsbF9rZXJuLmNvY2NpCj4+Cj4+IHYyOgo+PiBzeW5jb2JqLT50aW1lbGluZSBzdGlsbCBu ZWVkcyBwcm90ZWN0Lgo+Pgo+PiB2MzoKPj4gdXNlIGEgZ2xvYmFsIHNpZ25hbGVkIGZlbmNlIGlu c3RlYWQgb2YgcmUtYWxsb2NhdGlvbi4KPj4KPj4gdjQ6Cj4+IERvbid0IG5lZWQgbW92aW5nIGxv Y2suCj4+IERvbid0IGV4cG9zZSBmdW5jLgo+Pgo+PiB2NToKPj4gcmVuYW1lIGZ1bmMgYW5kIGRp cmVjdGx5IHJldHVybi4KPj4KPj4gVGVzdGVkIGJ5OiBzeW5jb2JqX3dhaXQgYW5kIC4vZGVxcC12 ayAtbiBkRVFQLVZLLipzZW1hcGhvcmUqIHdpdGgKPj4gbG9jayBkZWJ1ZyBrZXJuZWwgb3B0aW9u cyBlbmFibGVkLgo+Pgo+PiBTaWduZWQtb2ZmLWJ5OiBDaHVubWluZyBaaG91IDxkYXZpZDEuemhv dUBhbWQuY29tPgo+PiBDYzogTWFhcnRlbiBMYW5raG9yc3QgPG1hYXJ0ZW4ubGFua2hvcnN0QGxp bnV4LmludGVsLmNvbT4KPj4gQ2M6IGludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKPj4g Q2M6IENocmlzdGlhbiBLw7ZuaWcgPGVhc3kycmVtZW1iZXIuY2hrQGdvb2dsZW1haWwuY29tPgo+ PiBDYzogQ2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+Cj4+IENDOiBKdWxp YSBMYXdhbGwgPGp1bGlhLmxhd2FsbEBsaXA2LmZyPgo+PiBSZXZpZXdlZC1ieTogQ2hyaXMgV2ls c29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+Cj4KPiBSZXZpZXdlZC1ieTogQ2hyaXN0aWFu IEvDtm5pZyA8Y2hyaXN0aWFuLmtvZW5pZ0BhbWQuY29tPgo+Cj4+IC0tLQo+PiDCoCBkcml2ZXJz L2dwdS9kcm0vZHJtX3N5bmNvYmouYyB8IDM2ICsrKysrKysrKysrKysrKysrKy0tLS0tLS0tLS0t LS0tLS0tCj4+IMKgIDEgZmlsZSBjaGFuZ2VkLCAxOSBpbnNlcnRpb25zKCspLCAxNyBkZWxldGlv bnMoLSkKPj4KPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fc3luY29iai5jIAo+ PiBiL2RyaXZlcnMvZ3B1L2RybS9kcm1fc3luY29iai5jCj4+IGluZGV4IGI3ZWFhNjAzZjM2OC4u ZDFjNmYyMWM3MmI1IDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX3N5bmNvYmou Ywo+PiArKysgYi9kcml2ZXJzL2dwdS9kcm0vZHJtX3N5bmNvYmouYwo+PiBAQCAtODAsNiArODAs MjMgQEAgc3RydWN0IGRybV9zeW5jb2JqX3NpZ25hbF9wdCB7Cj4+IMKgwqDCoMKgwqAgc3RydWN0 IGxpc3RfaGVhZCBsaXN0Owo+PiDCoCB9Owo+PiDCoCArc3RhdGljIERFRklORV9TUElOTE9DSyhz aWduYWxlZF9mZW5jZV9sb2NrKTsKPj4gK3N0YXRpYyBzdHJ1Y3QgZG1hX2ZlbmNlIHNpZ25hbGVk X2ZlbmNlOwo+PiArCj4+ICtzdGF0aWMgc3RydWN0IGRtYV9mZW5jZSAqZHJtX3N5bmNvYmpfZ2V0 X3N0dWJfZmVuY2Uodm9pZCkKPj4gK3sKPj4gK8KgwqDCoCBzcGluX2xvY2soJnNpZ25hbGVkX2Zl bmNlX2xvY2spOwo+PiArwqDCoMKgIGlmICghc2lnbmFsZWRfZmVuY2Uub3BzKSB7Cj4+ICvCoMKg wqDCoMKgwqDCoCBkbWFfZmVuY2VfaW5pdCgmc2lnbmFsZWRfZmVuY2UsCj4+ICvCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgJmRybV9zeW5jb2JqX3N0dWJfZmVuY2Vfb3BzLAo+ PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgICZzaWduYWxlZF9mZW5jZV9s b2NrLAo+PiArwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIDAsIDApOwo+PiAr wqDCoMKgwqDCoMKgwqAgZG1hX2ZlbmNlX3NpZ25hbF9sb2NrZWQoJnNpZ25hbGVkX2ZlbmNlKTsK Pj4gK8KgwqDCoCB9Cj4+ICvCoMKgwqAgc3Bpbl91bmxvY2soJnNpZ25hbGVkX2ZlbmNlX2xvY2sp Owo+PiArCj4+ICvCoMKgwqAgcmV0dXJuIGRtYV9mZW5jZV9nZXQoJnNpZ25hbGVkX2ZlbmNlKTsK Pj4gK30KPj4gwqAgLyoqCj4+IMKgwqAgKiBkcm1fc3luY29ial9maW5kIC0gbG9va3VwIGFuZCBy ZWZlcmVuY2UgYSBzeW5jIG9iamVjdC4KPj4gwqDCoCAqIEBmaWxlX3ByaXZhdGU6IGRybSBmaWxl IHByaXZhdGUgcG9pbnRlcgo+PiBAQCAtMTEzLDIzICsxMzAsOCBAQCBzdGF0aWMgc3RydWN0IGRt YV9mZW5jZQo+PiDCoMKgwqDCoMKgIHN0cnVjdCBkcm1fc3luY29ial9zaWduYWxfcHQgKnNpZ25h bF9wdDsKPj4gwqAgwqDCoMKgwqDCoCBpZiAoKHN5bmNvYmotPnR5cGUgPT0gRFJNX1NZTkNPQkpf VFlQRV9USU1FTElORSkgJiYKPj4gLcKgwqDCoMKgwqDCoMKgIChwb2ludCA8PSBzeW5jb2JqLT50 aW1lbGluZSkpIHsKPj4gLcKgwqDCoMKgwqDCoMKgIHN0cnVjdCBkcm1fc3luY29ial9zdHViX2Zl bmNlICpmZW5jZSA9Cj4+IC3CoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGt6YWxsb2Moc2l6ZW9mKHN0 cnVjdCBkcm1fc3luY29ial9zdHViX2ZlbmNlKSwKPj4gLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoCBHRlBfS0VSTkVMKTsKPj4gLQo+PiAtwqDCoMKgwqDCoMKgwqAgaWYgKCFmZW5jZSkK Pj4gLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgcmV0dXJuIE5VTEw7Cj4+IC3CoMKgwqDCoMKgwqDC oCBzcGluX2xvY2tfaW5pdCgmZmVuY2UtPmxvY2spOwo+PiAtwqDCoMKgwqDCoMKgwqAgZG1hX2Zl bmNlX2luaXQoJmZlbmNlLT5iYXNlLAo+PiAtwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgICZkcm1fc3luY29ial9zdHViX2ZlbmNlX29wcywKPj4gLcKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoCAmZmVuY2UtPmxvY2ssCj4+IC3CoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqAgc3luY29iai0+dGltZWxpbmVfY29udGV4dCwKPj4gLcKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBwb2ludCk7Cj4+IC0KPj4gLcKgwqDCoMKgwqDC oMKgIGRtYV9mZW5jZV9zaWduYWwoJmZlbmNlLT5iYXNlKTsKPj4gLcKgwqDCoMKgwqDCoMKgIHJl dHVybiAmZmVuY2UtPmJhc2U7Cj4+IC3CoMKgwqAgfQo+PiArwqDCoMKgwqDCoMKgwqAgKHBvaW50 IDw9IHN5bmNvYmotPnRpbWVsaW5lKSkKPj4gK8KgwqDCoMKgwqDCoMKgIHJldHVybiBkcm1fc3lu Y29ial9nZXRfc3R1Yl9mZW5jZSgpOwo+PiDCoCDCoMKgwqDCoMKgIGxpc3RfZm9yX2VhY2hfZW50 cnkoc2lnbmFsX3B0LCAmc3luY29iai0+c2lnbmFsX3B0X2xpc3QsIGxpc3QpIHsKPj4gwqDCoMKg wqDCoMKgwqDCoMKgIGlmIChwb2ludCA+IHNpZ25hbF9wdC0+dmFsdWUpCj4KCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxp c3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNr dG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=