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Mon, 30 Dec 2019 09:29:22 +0800 Message-ID: <1577669436.25204.8.camel@mtkswgap22> Subject: Re: [PATCH] mm/page_owner: print largest memory consumer when OOM panic occurs From: Miles Chen To: Qian Cai CC: Andrew Morton , Michal Hocko , , , , Date: Mon, 30 Dec 2019 09:30:36 +0800 In-Reply-To: <2EA70B54-A7E1-4C5A-A447-844A3FEA7E93@lca.pw> References: <1577432670.4248.3.camel@mtkswgap22> <2EA70B54-A7E1-4C5A-A447-844A3FEA7E93@lca.pw> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gRnJpLCAyMDE5LTEyLTI3IGF0IDA4OjQ2IC0wNTAwLCBRaWFuIENhaSB3cm90ZToNCj4gDQo+ ID4gT24gRGVjIDI3LCAyMDE5LCBhdCAyOjQ0IEFNLCBNaWxlcyBDaGVuIDxtaWxlcy5jaGVuQG1l ZGlhdGVrLmNvbT4gd3JvdGU6DQo+ID4gDQo+ID4gSXQncyBub3QgY29tcGxldGUgc2l0dWF0aW9u Lg0KPiA+IA0KPiA+IEkndmUgbGlzdGVkIGRpZmZlcmVudCBPT00gcGFuaWMgc2l0dWF0aW9ucyBp biBwcmV2aW91cyBlbWFpbCBbMV0NCj4gPiBhbmQgd2hhdCB3ZSBjYW4gZG8gYWJvdXQgdGhlbSB3 aXRoIGN1cnJlbnQgaW5mb3JtYXRpb24uDQo+ID4gDQo+ID4gVGhlcmUgYXJlIHNvbWUgY2FzZXMg d2hpY2ggY2Fubm90IGJlIGNvdmVyZWQgYnkgY3VycmVudCBpbmZvcm1hdGlvbg0KPiA+IGVhc2ls eS4NCj4gPiBGb3IgZXhhbXBsZTogYSBtZW1vcnkgbGVha2FnZSBjYXVzZWQgYnkgYWxsb2NfcGFn ZXMoKSBvciB2bWFsbG9jKCkgd2l0aA0KPiA+IGEgbGFyZ2Ugc2l6ZS4NCj4gPiBJIGtlZXAgc2Vl aW5nIHRoZXNlIGlzc3VlcyBmb3IgeWVhcnMgYW5kIHRoYXQncyB3aHkgSSBidWlsdCB0aGlzIHBh dGNoLiANCj4gPiBJdCdzIGxpa2UgYSBtaXNzaW5nIHBpZWNlIG9mIHRoZSBwdXp6bGUuDQo+ID4g DQo+ID4gVG8gcHJvdmUgdGhhdCB0aGUgYXBwcm9hY2ggaXMgcHJhY3RpY2FsIGFuZCB1c2VmdWws IEkgaGF2ZSBjb2xsZWN0ZWQNCj4gPiByZWFsIHRlc3QgY2FzZXMNCj4gPiB1bmRlciByZWFsIGRl dmljZXMgYW5kIHBvc3RlZCB0aGUgdGVzdCByZXN1bHQgaW4gdGhlIGNvbW1pdCBtZXNzYWdlLg0K PiA+IFRoZXNlIGFyZSByZWFsIGNhc2VzLCBub3QgbXkgaW1hZ2luYXRpb24uDQo+IA0KPiBPZiBj b3Vyc2UgdGhpcyBtYXkgaGVscCBkZWJ1ZyAqeW91ciogcHJvYmxlbXMgaW4gdGhlIHBhc3QsIGJ1 dCBpZiB0aGF0IGlzIHRoZSBvbmx5IHJlcXVpcmVtZW50IHRvIG1lcmdlIHRoZSBkZWJ1Z2dpbmcg cGF0Y2ggbGlrZSB0aGlzLCB3ZSB3b3VsZCBlbmQgdXAgd2l0aCBlbmRsZXNzIG9mIHRob3NlLiBJ ZiB5b3VyIGdvYWwgaXMgdG8gc3RvcCBkZXZlbG9wZXJzIGZyb20gcmVwcm9kdWNpbmcgaXNzdWVz IHVubmVjZXNzYXJpbHkgYWdhaW4gdXNpbmcgcGFnZV9vd25lciB0byBkZWJ1ZywgdGhlbiB5b3Vy IHBhdGNoIGRvZXMgbm90IGhlbHAgbXVjaCBmb3IgdGhlIG1ham9yaXR5IG9mIG90aGVyIGRldmVs b3BlcnPigJkgaXNzdWVzLg0KPiANCj4gVGhlIHBhZ2Vfb3duZXIgaXMgZGVzaWduZWQgdG8gZ2l2 ZSBpbmZvcm1hdGlvbiBhYm91dCB0aGUgdG9wIGNhbmRpZGF0ZXMgdGhhdCBtaWdodCBjYXVzZSBp c3N1ZXMsIHNvIGl0IG1ha2Ugc29tZXdoYXQgc2Vuc2UgaWYgaXQgZHVtcHMgdGhlIHRvcCAxMCBn cmVhdGVzdCBtZW1vcnkgY29uc3VtZXIgZm9yIGV4YW1wbGUsIGJ1dCB0aGF0IGFsc28gY2x1dHRl ciB0aGUgT09NIHJlcG9ydCBzbyBtdWNoLCBzbyBpdCBpcyBuby1nby4NCg0KWWVzLCBwcmludGlu ZyB0b3AgMTAgd2lsbCBiZSB0b28gbXVjaC4gVGhhdCdzIHdoeSBJIHByaW50IG9ubHkgdGhlDQpn cmVhdGVzdCBjb25zdW1lciwgYW5kIHRlc3QgaWYgdGhpcyBhcHByb2FjaCB3b3Jrcy4NCg0KSSB3 aWxsIHJlc2VuZCB0aGlzIHBhdGNoIGFmdGVyIHRoZSBicmVhay4gTGV0J3Mgd2FpdCBmb3Igb3Ro ZXJzJw0KY29tbWVudHM/DQoNCg0KICAgTWlsZXMNCg==