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 814A72D321D for ; Wed, 10 Sep 2025 20:34:16 +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=1757536458; cv=none; b=nkkVd4fjoBQzvh4NGIcQI/cIOQnwW8jaa/UXqE29T2fodDAn23cCT4KLESFrYSUtppGP+4pCn3JMzspTMwIHYcQlISSBdsAZYJ9sz+Qw05C7nPA3WxD4f3xLfQp05WkWSO6FhWOE5JoZ8YhZAeb5M5vqpnESkvutZaohNvCPK8w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757536458; c=relaxed/simple; bh=CkHtW8q/KcW7ygj8WdIW9r/usNUU9k5XqXuzrDabs/A=; h=From:To:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=KPiAIYnfipPadIuYK2JUXZ5xJ9Cs4d73zvDMX/KDgfFeeUIZuoovHgs+UgQ7UseuZTwCvyr7EnWkJv7GfNBN1K/zAGtUz1EmvYbP/K2IAieJ/9JfKv+p3mag1+eL2J0IYujDJOVXFucxgCyOFPl/JhUv4jTPpSvD2J5ktGsUfCM= 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=4u2QK7Y4; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=VHkPU86z; 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="4u2QK7Y4"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="VHkPU86z" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1757536454; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=BWJUP15r3n8/MjXCZffpwVy4cTnE3JTu8kOjPPspzQs=; b=4u2QK7Y4xS6JHeik30JB/GnrUN8xYNIDP6DiFVjfq/omGy9itJpsopIUwNK/9/fjvhNpbO Mk171iZmCEMsphtYhyEw63SgMWji0SlRDb27yjJbDm6MbASSmvPf2TUheNOsMgrDZCiE6y YCnyRLQkwhm1gZlsPNMck7099jZNMyubEnKMbmk3lwSyZlwAxeUwEQzZmgCgTCr5c2AYHK Y/E15WlQmg9OvW6Xk1t+fp7xyCQtWVeyVBB7wNIAtXn+dRw4DIbmwDJTCInnEJbmC7nXdc w9gthwATNmpQy7qEg+CofNOfBpy35q/DzQxgTrtv7/gdHZpi5sGtrLmRHzJdvA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1757536454; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=BWJUP15r3n8/MjXCZffpwVy4cTnE3JTu8kOjPPspzQs=; b=VHkPU86zocAfXvfPyLQ30cXywQDKQ5ukn+GdpWbASXj3o4C7v4KOvtagO6a9S/nqHO62Q3 +spOKOIoGDiDl1Bw== To: Mukesh Kumar Chaurasiya , maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, oleg@redhat.com, kees@kernel.org, luto@amacapital.net, wad@chromium.org, mchauras@linux.ibm.com, deller@gmx.de, ldv@strace.io, macro@orcam.me.uk, charlie@rivosinc.com, akpm@linux-foundation.org, bigeasy@linutronix.de, ankur.a.arora@oracle.com, sshegde@linux.ibm.com, naveen@kernel.org, thomas.weissschuh@linutronix.de, Jason@zx2c4.com, peterz@infradead.org, namcao@linutronix.de, kan.liang@linux.intel.com, mingo@kernel.org, oliver.upton@linux.dev, mark.barnett@arm.com, atrajeev@linux.vnet.ibm.com, rppt@kernel.org, coltonlewis@google.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [RFC V2 0/8] Generic IRQ entry/exit support for powerpc In-Reply-To: <20250908210235.137300-2-mchauras@linux.ibm.com> References: <20250908210235.137300-2-mchauras@linux.ibm.com> Date: Wed, 10 Sep 2025 22:34:13 +0200 Message-ID: <87ikhqrqre.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 Tue, Sep 09 2025 at 02:32, Mukesh Kumar Chaurasiya wrote: > Adding support for the generic irq entry/exit handling for PowerPC. The > goal is to bring PowerPC in line with other architectures that already > use the common irq entry infrastructure, reducing duplicated code and > making it easier to share future changes in entry/exit paths. > > This is slightly tested on ppc64le. > > The performance benchmarks from perf bench basic syscall are below: > > | Metric | W/O Generic Framework | With Generic Framework | Improvement | > | ---------- | --------------------- | ---------------------- | ----------- | > | Total time | 0.885 [sec] | 0.880 [sec] | ~0.56% | > | usecs/op | 0.088518 | 0.088005 | ~0.58% | > | ops/sec | 1,12,97,086 | 1,13,62,977 | ~0.58% | > > Thats close to 0.6% improvement with this. Cool! > 18 files changed, 698 insertions(+), 810 deletions(-) Thanks for moving ppc over to this. Makes everyones life easier! tglx