From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0479B1FFC69 for ; Mon, 3 Feb 2025 15:40:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738597206; cv=none; b=F64LFKO+MXeUhaRHRy0IZnQ16y/fzha3mt4ZRno/8YKt9I3zLl++upA/TlaU8j7GCIlhlc0asa8aSH51MwzG+I/Rt6N6NuYctmLDZIoi7lb9AYEZ5LAhmOW2I+WBMQxdOD7H1P+mCeHlzYEEgvyctRWLxwbg8/xd6HiGCRA4orc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738597206; c=relaxed/simple; bh=Q2R4wVJZw/CxiXFjJ998r15Bob07Ai87muTmjPh9CbE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YS+j1CugXH6owSbd948KDGEXKPlNOQ6KUca/vfRiN/vEOjwc5oAbCXa3Z/8W3ukW+Zn3J93HF+o5lJ37x7swSNjozEVBG/KzwxuND9rJWMXYzLCQUUOw7FWFe3DaDPoW1iRL2abAuhlWJy+8S4/AQUHMl+dDTmiIUEzv1czG3z4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=saJlK5jy; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="saJlK5jy" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Q2R4wVJZw/CxiXFjJ998r15Bob07Ai87muTmjPh9CbE=; b=saJlK5jyRYlA3PqSkPoOfBC1Yl QD51fgKXhb5xakGjp3PBCEyOEjw2ygZzKdtIWHEJ2j7xWjS7YiZfKSZURH4mQiIPIZw5Xo/KUVHDd cmXXuM50xtgVwSUX7Txl+bFrBPgnRaIMmqMIntOYEVkrg+rY6NEkNCa+yCYafKsR49Oh1BP51oYfy YUApD23f4QhFIPotMlWCHYuNyQORfnkkwv2Q37+YIJaapsFRs7GYlRrYy9qCs0yWYBUikh2lwf67j zBr8f6Pk/8gsR0yhTjL5ajRbIQv5FV4fqxnDgnvtCcBXUjstN9Gh99eyBRmexeSoe/LR1sNKlyB4g IS2/4fFA==; Received: from 77-249-17-89.cable.dynamic.v4.ziggo.nl ([77.249.17.89] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1teyYK-00000001GoP-1o95; Mon, 03 Feb 2025 15:40:00 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 03F3C30035F; Mon, 3 Feb 2025 16:39:59 +0100 (CET) Date: Mon, 3 Feb 2025 16:39:58 +0100 From: Peter Zijlstra To: Sebastian Andrzej Siewior Cc: linux-kernel@vger.kernel.org, =?iso-8859-1?Q?Andr=E9?= Almeida , Darren Hart , Davidlohr Bueso , Ingo Molnar , Juri Lelli , Thomas Gleixner , Valentin Schneider , Waiman Long Subject: Re: [PATCH v8 03/15] futex: Add basic infrastructure for local task local hash. Message-ID: <20250203153958.GM8385@noisy.programming.kicks-ass.net> References: <20250203135935.440018-1-bigeasy@linutronix.de> <20250203135935.440018-4-bigeasy@linutronix.de> <20250203144101.GL7145@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250203144101.GL7145@noisy.programming.kicks-ass.net> On Mon, Feb 03, 2025 at 03:41:02PM +0100, Peter Zijlstra wrote: > Because the shorter hash invocation only cares about being private, not > about having fhb. While driving to pick up kid from high school, I realized I was full of crap. Short hash is very much specific to local thing. Carry on.