From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Hongzhan" Subject: RE: Large gpio interrupt latency Date: Wed, 16 Jun 2021 09:05:15 +0000 Message-ID: References: <10a7-60c9b400-83-35a6e6c0@10047715> In-Reply-To: <10a7-60c9b400-83-35a6e6c0@10047715> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?utf-8?B?RnJhbsOnb2lzIExlZ2Fs?= Cc: "xenomai@xenomai.org" DQoNCj4tLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPkZyb206IEZyYW7Dp29pcyBMZWdhbCA8 ZGV2ZWxAdGhvbS5mci5ldS5vcmc+IA0KPlNlbnQ6IFdlZG5lc2RheSwgSnVuZSAxNiwgMjAyMSA0 OjE5IFBNDQo+VG86IENoZW4sIEhvbmd6aGFuIDxob25nemhhbi5jaGVuQGludGVsLmNvbT4NCj5D YzogeGVub21haUB4ZW5vbWFpLm9yZw0KPlN1YmplY3Q6IFJFOiBMYXJnZSBncGlvIGludGVycnVw dCBsYXRlbmN5DQo+DQo+TGUgTWVyY3JlZGksIEp1aW4gMTYsIDIwMjEgMTA6MTAgQ0VTVCwgIkNo ZW4sIEhvbmd6aGFuIiA8aG9uZ3poYW4uY2hlbkBpbnRlbC5jb20+IGEgw6ljcml0OiANCj4gDQo+ PiANCj4+ID4NCj4+ID4tLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPj4gPkZyb206IFhlbm9t YWkgPHhlbm9tYWktYm91bmNlc0B4ZW5vbWFpLm9yZz4gT24gQmVoYWxmIE9mIEZyYW7Dp29pcyBM ZWdhbCB2aWEgWGVub21haQ0KPj4gPlNlbnQ6IFdlZG5lc2RheSwgSnVuZSAxNiwgMjAyMSAzOjE2 IFBNDQo+PiA+VG86IHhlbm9tYWlAeGVub21haS5vcmcNCj4+ID5TdWJqZWN0OiBMYXJnZSBncGlv IGludGVycnVwdCBsYXRlbmN5DQo+PiA+DQo+PiA+SGVsbG8sDQo+PiA+DQo+PiA+d29ya2luZyBv biBhIHJlYWx0aW1lIGRhdGEgcmVjb3JkZXIgKGZvciB3aGljaCBJIHN1Ym1pdHRlZCBhIHBhdGNo IHRvIGFkZCB0aW1lc3RhbXAgcmV0cmlldmFsIGZvciBuZXQgcGFja2V0cyksIEkgZXhwZXJpZW5j ZSBhIHN0cmFuZ2UgbGF0ZW5jeSBwcm9ibGVtIHdpdGggdGFraW5nIEdQSU8gaW50ZXJydXB0cy4N Cj4+ID4NCj4+ID5TbyBiYXNpY2FsbHkgbXkgYXBwIG1vbml0b3JzIG5ldHdvcmsgcGFja2V0cyAo d2hpY2ggYXMgcmVjZWl2ZWQgYnkgdGhlIERVVCB3b3VsZCB0cmlnZ2VyIHRvZ2dsaW5nIG9mIGEg R1BJTyBvbiB0aGUgRFVUKSBhbmQgb25lIEdQSU8uDQo+PiA+V2Uga25vdyAoZnJvbSBzb21lIG9o dGVyIHJlZmVyZW5jZSBpbnN0cnVtZW50KSB0aGF0IHRoZSBEVVQgd291bGQgdG9nZ2xlIHRoZSBH UElPIDEtMm1zIGFmdGVyIHJlY2VpdmluZyBhIHNwZWNpZmljIG5ldHdvcmsgcGFja2V0Lg0KPj4g Pg0KPj4gPk15IHJlY29yZGVyIGFwcCByZWxpZXMgb24gdGhlIHRpbWVzdGFtcGluZyBvZiBldmVu dHMgZG9uZSBpbiBpbnRlcnJ1cHRzIHNlcnZpY2Ugcm91dGluZXMgZm9yIEdQSU9zIGFuZCBuZXR3 b3JrIGludGVyZmFjZS4gQnkgY2hlY2tpbmcgdGhlIHRpbWVzdGFtcHMgcmV0dXJuZWQgYnkgdGhl IGFwcGxpY2F0aW9uLCBJIGdldCBhbiBhYm91dCA1MG1zIGRlbGF5IGJldHdlZW4gdGhlIG5ldHdv cmsgcGFja2V0IGFuZCB0aGUgR1BJTyAoc28gc29tZXRoaW5nIGJldHdlZW4gNTEgYW5kIDUybXMg ZGVsYXkpLg0KPj4gPg0KPj4gDQo+PiBBcmUgeW91IHRvZ2dsaW5nIGdwaW8gYW5kIGFjY2VzcyBn cGlvIGRldmljZSAgdGhyb3VnaCB5b3VyIHJ0ZG0gZGV2aWNlIGxpa2Ugb24gcGF0aCAvZGV2L3J0 ZG0veW91cl9ncGlvY29udHJvbGxlci9ncGlvKj8NCj4+IA0KPg0KPk1heWJlIG15IHNldHVwIHdh cyBub3QgdmVyeSBjbGVhci4NCj5JJ3ZlIGdvdCBhIERVVCB0aGF0IHJlY2VpdmVzIG5ldHdvcmsg ZGF0YSwgYW5kIHRvZ2dsZXMgb25lIG9mIGl0cyBHUElPcyBkZXBlbmRpbmcgb25lIHRoZSBuZXR3 b3JrIGRhdGEuDQo+DQo+SSd2ZSBnb3QgYW5vdGhlciBkZXZpY2UgcnVubmluZyBteSByZWFsdGlt ZSByZWNvcmRpbmcgYXBwLCB0aGF0IHJlY2VpdmVzIHRoZSBzYW1lIG5ldHdvcmsgZGF0YSBhcyB0 aGUgRFVULCBhbmQgdGhhdCBoYXMgb25lIG9mIGl0cyBHUElPIGNvbm5lY3RlZCB0byB0aGUgRFVU IEdQSU8uDQo+DQo+T24gdGhlIHJlY29yZGluZyBhcHAsIEkgdXNlIHRoZSBSVERNIGRldmljZSB0 byBvcGVuLCBpb2N0bCAoZW5hYmxlIGludGVycnVwdCArIHRpbWVzdGFtcCksIHRoZW4gc2VsZWN0 ICYgcmVhZCB0aGUgR1BJTyB2YWx1ZS4NCg0KV2hlbiBpc3N1ZSBoYXBwZW4sIHRoZSByZWNvcmRp bmcgYXBwIHNpZGUgaGF2ZSBnb3Qgc2FtZSBudW1iZXIgb2YgbmV0d29yayBkYXRhIHBhY2thZ2Vz IGFuZCBncGlvIGludGVycnVwdHMgd2l0aCB0aGF0IERVVCBoYXZlIGJlZW4gdG9nZ2xpbmc/ICAN CkkgYW0gYXNraW5nIHRoaXMgYmVjYXVzZSBJIG1ldCBncGlvIGhhcmR3YXJlIGlzc3VlIHRoYXQg d291bGQgY2F1c2UgZ3BpbyBpbnRlcnJ1cHQgbWlzc2luZyBvciBpbnZhbGlkIGdwaW8gaW50ZXJy dXB0cyB3aGVuIGdwaW8gaXMgY29ubmVjdGluZyBvbiB0d28gZGlmZmVyZW50IGJvYXJkcy4NCg0K Pg0KPkZyYW7Dp29pcw0KPg0KPg0KPj4gSG9uZ3poYW4gQ2hlbg0KPj4gDQo+PiA+SSB3b25kZXIg d2hlcmUgdGhhdCBtaWdodCBiZSBjb21pbmcgZnJvbS4NCj4+ID4NCj4+ID5BbnkgaWRlYSA/DQo+ PiA+DQo+PiA+dGhhbmtzIGluIGFkdmFuY2UNCj4+ID4NCj4+ID5GcmFuw6dvaXMNCj4NCj4NCj4N Cg==