From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) (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 394AA20A5C4; Fri, 12 Dec 2025 01:13:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765502038; cv=none; b=KM8rrVxCuS9jOFanRSp5blEq/8GMhfgsseBGA6aOEAohTov+K2QnOHAtsH/mV+FSfl9BVGQJA2uIU0GKe2GMOiXzl+ij9Zia1Hi9RYaXMQ7xGB669RNKWYSvvH1WyzvSiuTi8AfIdSEOBtkR7Muq1QAL48+o5/QsiXhLQ6P+V/g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765502038; c=relaxed/simple; bh=wjMxNYK3+DfJ6xAeWz0SVNgXUX13l/Ho/l5kO35JvWc=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=p8BPPkLSKU66J1g6C24b6otPXTGKfDmJpRi+Ze5BB5+ULfWqUYEhpj3dQX3ZdiH+z95qdLLp0WbwxvXjo2PxqXxlf4NPIMZwLvQtkawu2xZ2B9DgFDneAvtcPdFrZSl9u0/nBc4fhruToXziwxpvJlA4m9hEktGJroXALTILAek= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 96CFFC024A; Fri, 12 Dec 2025 01:13:48 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf11.hostedemail.com (Postfix) with ESMTPA id 0A5CD2002C; Fri, 12 Dec 2025 01:13:44 +0000 (UTC) Date: Thu, 11 Dec 2025 20:13:40 -0500 From: Steven Rostedt To: "Paul E. McKenney" Cc: Joel Fernandes , "linux-kernel@vger.kernel.org" , Mathieu Desnoyers , Sebastian Andrzej Siewior , "bpf@vger.kernel.org" Subject: Re: [PATCH v3] tracing: Guard __DECLARE_TRACE() use of __DO_TRACE_CALL() with SRCU-fast Message-ID: <20251211201340.618195b2@fedora> In-Reply-To: References: X-Mailer: Claws Mail 4.3.1 (GTK 3.24.51; x86_64-redhat-linux-gnu) 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-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 0A5CD2002C X-Stat-Signature: eid3cyp49wyrcyr4y3cfjzew16tjfdwu X-Rspamd-Server: rspamout08 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX19jjFVCDig2uscPTXP3BtbFVlSic7mS3Vk= X-HE-Tag: 1765502024-551383 X-HE-Meta: U2FsdGVkX19/Er++Ul3pM2LrRGJOLDWVQPdekHbC1Vd8duTAWqdshjo/SMRnpk2Ig5nY5SoAlKHWfulcb0rkiYPnBHuCMCQ6mvZ8QqdAKhopKr94to394Fsar/k5jnWbGr7dWW/Y82eClRzAqXUE8Lp30LK7mAc98QfoArUEOHqq3p/rUcfBtIm9FKF2lb72a/QrpuBZ0FSHYo710nIBsHEuBW9/0t/7BWP+7x/CTW71HiWbyT9jVUD0o9iCO+XWGG8kNE9euqMe7uSRSZ8d3f4K7P+wYFInyvX5zfkITzoqbLLpnHCoPT0YppYTNjf2Tgf2d/3/tw6qflmZnAby/1e8XZjScmUqsVCGn90poIxwNYCYbEN5Qw== On Thu, 11 Dec 2025 12:23:29 -0800 "Paul E. McKenney" wrote: > > Is there a reason to not make non-RT also benefit from SRCU fast and trace points for BPF? Can be a follow up patch though if needed. > > Because in some cases the non-RT benefit is suspected to be negative > due to increasing the probability of preemption in awkward places. > > > Reviewed-by: Joel Fernandes > > Thank you, and I will let Steven collect this one. > Sure. Note, I'll be working on this next week. -- Steve