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Sun, 05 Apr 2026 01:37:23 -0700 (PDT) Date: Sun, 05 Apr 2026 01:37:23 -0700 (PDT) From: zhidao su X-Google-Original-From: zhidao su Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: base64 To: Peter Zijlstra Cc: soolaugust@gmail.com, jstultz@google.com, juri.lelli@redhat.com, mingo@redhat.com, linux-kernel@vger.kernel.org, Andrea Righi Subject: Re: [PATCH] sched/deadline: Fix stale dl_defer_running in update_dl_entity() if-branch In-Reply-To: <20260404102244.GB22575@noisy.programming.kicks-ass.net> References: <20260404102244.GB22575@noisy.programming.kicks-ass.net> Message-ID: T24gU2F0LCBBcHIgMDQsIDIwMjYgYXQgMTI6MjI6NDRQTSArMDIwMCwgUGV0ZXIgWmlqbHN0cmEg d3JvdGU6Cj4gUmFuZG9tIGJyYWluIHdhdmUuLi4KPgo+IFNpbmNlIHRoZSBkbF9zZXJ2ZXIgaXMg TExGIChkZWZlcnJlZCksIGl0IHdpbGwgcHJldHR5IG11Y2ggYWx3YXlzIHRyaXAKPiB0aGUgZGxf ZW50aXR5X292ZXJmbG93KCkgd2hlbiBpbnRlcnJ1cHRlZCwgcmlnaHQ/IERvZXMgaXQgbWFrZSBz ZW5zZSB0bwo+IHVzZSB0aGUgcmV2aXNlZCB3YWtlLXVwIHJ1bGUgZm9yIGl0LCB3aGVuIGFwcHJv cHJpYXRlPwoKVGhhbmtzIGZvciB0aGUgYnJhaW4gd2F2ZSEKClRlc3RlZCB5b3VyIGRpZmYg4oCU IGxvY2t0b3J0dXJlIGJvb3QgdGltZSBkcm9wcyB0byB+MTNzICh2cyB+MzctNTJzIHdpdGgKdGhl IGhhY2sgcmV2ZXJ0KSBhbmQga3NjaGVkX2Zvb3RiYWxsIGJhbGxfcG9zIHN0YXlzIGF0IDAuCgpJ IHRyYWNlZCB1cGRhdGVfZGxfZW50aXR5KCkgYW5kIGZvdW5kIHRoZSBlbHNlLWJyYW5jaCBoaXRz IGFsbCBzaG93CmRsX2RlZmVyX3J1bm5pbmc9MSB3aXRoIGRsX3Rocm90dGxlZD0wIGFuZCBkbF9k ZWZlcl9hcm1lZD0wIOKAlCB0aGF0J3MKdGhlIFtEOnJ1bm5pbmddIHN0YXRlLCBzbyB0aGUgZ3Vh cmQgdGhlcmUgaXMgY29ycmVjdC4gVGhlIGFjdHVhbCBzdGFsZQpjYXNlIGlzIGluIHRoZSBpZi1i cmFuY2ggKG92ZXJmbG93PTEsIGRlYWRsaW5lIG5vdCBwYXN0LCBkbF9kZWZlcl9ydW5uaW5nPTEp LAp3aGljaCB5b3VyIGRpZmYgaGFuZGxlcyB2aWEgcmV2aXNlZCB3YWtldXAuCgpUaGF0IGFsc28g bWVhbnMgb3VyIG9yaWdpbmFsIGVsc2UtYnJhbmNoIGZpeCB3YXMgd3Jvbmcg4oCUIHVuY29uZGl0 aW9uYWxseQpjbGVhcmluZyBkbF9kZWZlcl9ydW5uaW5nIGluIFtEOnJ1bm5pbmddIHdvdWxkIGNv cnJ1cHQgYSBsZWdpdGltYXRlbHkKcnVubmluZyBzZXJ2ZXIncyBzdGF0ZS4KCklzIHlvdXIgcmV2 aXNlZCB3YWtldXAgZGlmZiB0aGUgaW50ZW5kZWQgcmVwbGFjZW1lbnQgZm9yIDExNTEzNTQyMjU2 Mj8KSWYgc28sIGhhcHB5IHRvIHRlc3QgZnVydGhlciBvciBoZWxwIGRyYWZ0IGl0IGludG8gYSBw cm9wZXIgcGF0Y2guCgpTaWduZWQtb2ZmLWJ5OiB6aGlkYW8gc3UgPHN1emhpZGFvQHhpYW9taS5j b20+