From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 AF8DC4A00 for ; Fri, 21 Mar 2025 20:28:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742588939; cv=none; b=j5YmZlmDIUZCje2PxUCH6EodErlw881OfLNMzfjToIbvZt8MynkYYZBRwCSrGApNtpcAklnsCX7rrkIvPOsa+zJc3LihDRlqDSbUvASemaMHdNKhxqTBJ/0innwyk959zCYihg8GqUcheuurrrucuWW5JcIGlkBKAodV0F+DgYI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742588939; c=relaxed/simple; bh=MnMacZW/FLjev9kkv6FIEh8Gr4w3l2EixWuMgSkANF8=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Q71BnqgPDUh8ePME9VQWdXIlHWLOWJE/n23O3ThIMmP4tg9auiOpDeWTTOYdISHfQkwTSKP6vs23Kr712DmjjEPLwFGKTWQZxtg+59QhFI0/19PV33qF3J6bezfQNsFc9wtI8lRfxXIlvaIWvtWIIkpDswFYNg/SkIfYGeEhFvQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=oR+exgYs; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=90a12UMb; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="oR+exgYs"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="90a12UMb" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1742588935; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MnMacZW/FLjev9kkv6FIEh8Gr4w3l2EixWuMgSkANF8=; b=oR+exgYs9jNCN7sQhjPVIZFnxbVkbdDUie+IGVtNNvc48yVyYbJK6Kfr5Gs6D5iVx4+eRr zBupbIbvnaY5wQEk5fIH0yFyL0/rD8HqyJWXDKJsJyVDSf1v0IP2l0f9d3Rsb+/E/Tzuv8 I4iTKgrdCz2pg/exU0nzDa9Nl5ZnTb4WCLv4ZWWgFLkY0wU528cc6igAf2cOZxONMptUWq OXB/Gsk9gv1STGcJKYRu6/1asySU2G3iC7ik0aISEPnbx6lvr2zMwZpGVjz5WgRmm4/5fD +PiS6fRRoP43e2APJuRvefZdHPXfYZa69AA6IjRByu10HtpR1BAR4DSBbvtUtQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1742588935; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MnMacZW/FLjev9kkv6FIEh8Gr4w3l2EixWuMgSkANF8=; b=90a12UMbA+i3IzgisRP5ZFsRkmSD4dccKI3EILZFjtfInLS60Q2BbnTpPj+TDiz6myCgkK ZW6Yftg6e/3fsjAg== To: Steven Rostedt Cc: Josh Poimboeuf , x86@kernel.org, linux-kernel@vger.kernel.org, Ingo Molnar , Peter Zijlstra Subject: Re: [PATCH] tracing: Disable branch profiling in noinstr code In-Reply-To: <20250321131248.02114dd7@batman.local.home> References: <52a664ec9e14ef53c39c3d4fa400c2f1d29348c0.1742537096.git.jpoimboe@kernel.org> <871puq2uop.ffs@tglx> <20250321131248.02114dd7@batman.local.home> Date: Fri, 21 Mar 2025 21:28:55 +0100 Message-ID: <87r02q162g.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Mar 21 2025 at 13:12, Steven Rostedt wrote: > On Fri, 21 Mar 2025 17:51:50 +0100 > Thomas Gleixner wrote: > >> Though the real fix would be to rip out this likely/unlikely tracer >> hackery all together. > > If you want, you could just disable it for all of arch/x86 > > In my tests, I'm more interested in the generic code anyway. Which is affected too as you can see from diffstat.