From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 5606236AF3 for ; Fri, 15 Dec 2023 15:32:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="RR12zPsU" Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id E269C41466 for ; Fri, 15 Dec 2023 15:32:19 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org E269C41466 Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.a=rsa-sha256 header.s=pandora-2019 header.b=RR12zPsU X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eBKJvQP3DEmO for ; Fri, 15 Dec 2023 15:32:18 +0000 (UTC) Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by smtp2.osuosl.org (Postfix) with ESMTPS id 70B6F409B5 for ; Fri, 15 Dec 2023 15:32:18 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 70B6F409B5 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=nvVr24yJlTcKSpTw1UQi3U4632hdafX2X9T8yNVWb/s=; b=RR12zPsUj34Qy44F0kIaQPaAZB nPc+zWXztM2JH+6eKjddRnEJOcP4lHMaZs0Ok+6Eho9xjDst2RRvXpsCCyoi7ja6CGEcydbSwFAla 53X4gkcQ8TpZWIlIRo/ThKhe3wdKOcfl7yUOyXTd80QhoYvEG1X1gzin5cMl7VuHRsiaoHUkm/vCF PYV3ouDdMG+9zRwjqRNnemtSmGGjTl1pO8Bz5P4ZH+wXgC0S9oDcdiSR5YyOfn5ipO2ghRZtIMuIZ 6tcgCPy1Ngdj7NUdlCPMO+WdfmNzTDSJrQZBHAb7IAFs/jxP1GIaaGn85jf5fzZNPpucwpWFKdF2Q MkpmY3mA==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:48236) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rEAAQ-0002qa-0q; Fri, 15 Dec 2023 15:31:58 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1rEAAN-0003iY-2B; Fri, 15 Dec 2023 15:31:55 +0000 Date: Fri, 15 Dec 2023 15:31:55 +0000 From: "Russell King (Oracle)" To: "Rafael J. Wysocki" Cc: Jonathan Cameron , linux-pm@vger.kernel.org, loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev, x86@kernel.org, acpica-devel@lists.linuxfoundation.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, Salil Mehta , Jean-Philippe Brucker , jianyong.wu@arm.com, justin.he@arm.com, James Morse Subject: Re: [PATCH RFC v3 01/21] ACPI: Only enumerate enabled (or functional) devices Message-ID: References: <20231214173241.0000260f@Huawei.com> Precedence: bulk X-Mailing-List: acpica-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Sender: Russell King (Oracle) On Thu, Dec 14, 2023 at 07:37:10PM +0100, Rafael J. Wysocki wrote: > On Thu, Dec 14, 2023 at 7:16 PM Rafael J. Wysocki wrote: > > > > On Thu, Dec 14, 2023 at 7:10 PM Russell King (Oracle) > > wrote: > > > I guess we need something like: > > > > > > if (device->status.present) > > > return device->device_type != ACPI_BUS_TYPE_PROCESSOR || > > > device->status.enabled; > > > else > > > return device->status.functional; > > > > > > so we only check device->status.enabled for processor-type devices? > > > > Yes, something like this. > > However, that is not sufficient, because there are > ACPI_BUS_TYPE_DEVICE devices representing processors. > > I'm not sure about a clean way to do it ATM. Ok, how about: static bool acpi_dev_is_processor(const struct acpi_device *device) { struct acpi_hardware_id *hwid; if (device->device_type == ACPI_BUS_TYPE_PROCESSOR) return true; if (device->device_type != ACPI_BUS_TYPE_DEVICE) return false; list_for_each_entry(hwid, &device->pnp.ids, list) if (!strcmp(ACPI_PROCESSOR_OBJECT_HID, hwid->id) || !strcmp(ACPI_PROCESSOR_DEVICE_HID, hwid->id)) return true; return false; } and then: if (device->status.present) return !acpi_dev_is_processor(device) || device->status.enabled; else return device->status.functional; ? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! 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Wysocki" Cc: Jonathan Cameron , linux-pm@vger.kernel.org, loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev, x86@kernel.org, acpica-devel@lists.linuxfoundation.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, Salil Mehta , Jean-Philippe Brucker , jianyong.wu@arm.com, justin.he@arm.com, James Morse Subject: Re: [PATCH RFC v3 01/21] ACPI: Only enumerate enabled (or functional) devices Message-ID: References: <20231214173241.0000260f@Huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231215_073213_953968_19FF9ADD X-CRM114-Status: GOOD ( 12.26 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; 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Wysocki" Cc: Jonathan Cameron , linux-pm@vger.kernel.org, loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev, x86@kernel.org, acpica-devel@lists.linuxfoundation.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, Salil Mehta , Jean-Philippe Brucker , jianyong.wu@arm.com, justin.he@arm.com, James Morse Subject: Re: [PATCH RFC v3 01/21] ACPI: Only enumerate enabled (or functional) devices Message-ID: References: <20231214173241.0000260f@Huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231215_073213_953968_19FF9ADD X-CRM114-Status: GOOD ( 12.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVGh1LCBEZWMgMTQsIDIwMjMgYXQgMDc6Mzc6MTBQTSArMDEwMCwgUmFmYWVsIEouIFd5c29j a2kgd3JvdGU6Cj4gT24gVGh1LCBEZWMgMTQsIDIwMjMgYXQgNzoxNuKAr1BNIFJhZmFlbCBKLiBX eXNvY2tpIDxyYWZhZWxAa2VybmVsLm9yZz4gd3JvdGU6Cj4gPgo+ID4gT24gVGh1LCBEZWMgMTQs IDIwMjMgYXQgNzoxMOKAr1BNIFJ1c3NlbGwgS2luZyAoT3JhY2xlKQo+ID4gPGxpbnV4QGFybWxp bnV4Lm9yZy51az4gd3JvdGU6Cj4gPiA+IEkgZ3Vlc3Mgd2UgbmVlZCBzb21ldGhpbmcgbGlrZToK PiA+ID4KPiA+ID4gICAgICAgICBpZiAoZGV2aWNlLT5zdGF0dXMucHJlc2VudCkKPiA+ID4gICAg ICAgICAgICAgICAgIHJldHVybiBkZXZpY2UtPmRldmljZV90eXBlICE9IEFDUElfQlVTX1RZUEVf UFJPQ0VTU09SIHx8Cj4gPiA+ICAgICAgICAgICAgICAgICAgICAgICAgZGV2aWNlLT5zdGF0dXMu ZW5hYmxlZDsKPiA+ID4gICAgICAgICBlbHNlCj4gPiA+ICAgICAgICAgICAgICAgICByZXR1cm4g ZGV2aWNlLT5zdGF0dXMuZnVuY3Rpb25hbDsKPiA+ID4KPiA+ID4gc28gd2Ugb25seSBjaGVjayBk ZXZpY2UtPnN0YXR1cy5lbmFibGVkIGZvciBwcm9jZXNzb3ItdHlwZSBkZXZpY2VzPwo+ID4KPiA+ IFllcywgc29tZXRoaW5nIGxpa2UgdGhpcy4KPiAKPiBIb3dldmVyLCB0aGF0IGlzIG5vdCBzdWZm aWNpZW50LCBiZWNhdXNlIHRoZXJlIGFyZQo+IEFDUElfQlVTX1RZUEVfREVWSUNFIGRldmljZXMg cmVwcmVzZW50aW5nIHByb2Nlc3NvcnMuCj4gCj4gSSdtIG5vdCBzdXJlIGFib3V0IGEgY2xlYW4g d2F5IHRvIGRvIGl0IEFUTS4KCk9rLCBob3cgYWJvdXQ6CgpzdGF0aWMgYm9vbCBhY3BpX2Rldl9p c19wcm9jZXNzb3IoY29uc3Qgc3RydWN0IGFjcGlfZGV2aWNlICpkZXZpY2UpCnsKCXN0cnVjdCBh Y3BpX2hhcmR3YXJlX2lkICpod2lkOwoKCWlmIChkZXZpY2UtPmRldmljZV90eXBlID09IEFDUElf QlVTX1RZUEVfUFJPQ0VTU09SKQoJCXJldHVybiB0cnVlOwoKCWlmIChkZXZpY2UtPmRldmljZV90 eXBlICE9IEFDUElfQlVTX1RZUEVfREVWSUNFKQoJCXJldHVybiBmYWxzZTsKCglsaXN0X2Zvcl9l YWNoX2VudHJ5KGh3aWQsICZkZXZpY2UtPnBucC5pZHMsIGxpc3QpCgkJaWYgKCFzdHJjbXAoQUNQ SV9QUk9DRVNTT1JfT0JKRUNUX0hJRCwgaHdpZC0+aWQpIHx8CgkJICAgICFzdHJjbXAoQUNQSV9Q Uk9DRVNTT1JfREVWSUNFX0hJRCwgaHdpZC0+aWQpKQoJCQlyZXR1cm4gdHJ1ZTsKCglyZXR1cm4g ZmFsc2U7Cn0KCmFuZCB0aGVuOgoKCWlmIChkZXZpY2UtPnN0YXR1cy5wcmVzZW50KQoJCXJldHVy biAhYWNwaV9kZXZfaXNfcHJvY2Vzc29yKGRldmljZSkgfHwgZGV2aWNlLT5zdGF0dXMuZW5hYmxl ZDsKCWVsc2UKCQlyZXR1cm4gZGV2aWNlLT5zdGF0dXMuZnVuY3Rpb25hbDsKCj8KCi0tIApSTUsn cyBQYXRjaCBzeXN0ZW06IGh0dHBzOi8vd3d3LmFybWxpbnV4Lm9yZy51ay9kZXZlbG9wZXIvcGF0 Y2hlcy8KRlRUUCBpcyBoZXJlISA4ME1icHMgZG93biAxME1icHMgdXAuIERlY2VudCBjb25uZWN0 aXZpdHkgYXQgbGFzdCEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlz dHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2xpbnV4LWFybS1rZXJuZWwK