linux-kernel - [PATCH v7 25/26] arm64: kernel: Respect the hierarchical CPU topology in DT for PSCI

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Message-Id: <1523531671-27491-26-git-send-email-ulf.hansson@linaro.org>
Date:   Thu, 12 Apr 2018 13:14:30 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Sudeep Holla <sudeep.holla@....com>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
        Mark Rutland <mark.rutland@....com>, linux-pm@...r.kernel.org
Cc:     Kevin Hilman <khilman@...nel.org>,
        Lina Iyer <ilina@...eaurora.org>,
        Lina Iyer <lina.iyer@...aro.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Juri Lelli <juri.lelli@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>
Subject: [PATCH v7 25/26] arm64: kernel: Respect the hierarchical CPU topology in DT for PSCI

To let the PSCI driver to parse the CPU topology in DT, as to create CPU PM
domains in case the hierarchical layout is used, let's call
psci_dt_topology_init() from the existing topology_init() subsys_initcall.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: Lina Iyer <ilina@...eaurora.org>
Co-developed-by: Lina Iyer <lina.iyer@...aro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
 arch/arm64/kernel/setup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 30ad2f0..574a504 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -331,6 +331,9 @@ static int __init topology_init(void)
 {
 	int i;
 
+	if (acpi_disabled)
+		psci_dt_topology_init();
+
 	for_each_online_node(i)
 		register_one_node(i);
 
-- 
2.7.4