From: Atish Patra <atish.patra@wdc.com> To: linux-riscv@lists.infradead.org Cc: "Atish Patra" <atish.patra@wdc.com>, "Alan Kao" <alankao@andestech.com>, "Albert Ou" <aou@eecs.berkeley.edu>, "Andreas Schwab" <schwab@suse.de>, "Anup Patel" <anup@brainfault.org>, "Daniel Lezcano" <daniel.lezcano@linaro.org>, "Dmitriy Cherkasov" <dmitriy@oss-tech.org>, "Jason Cooper" <jason@lakedaemon.net>, linux-kernel@vger.kernel.org, "Marc Zyngier" <marc.zyngier@arm.com>, "Palmer Dabbelt" <palmer@sifive.com>, "Patrick Stählin" <me@packi.ch>, "Paul Walmsley" <paul.walmsley@sifive.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Zong Li" <zongbox@gmail.com>, "Damien Le Moal" <Damien.LeMoal@wdc.com> Subject: [v3 PATCH 3/8] RISC-V: Remove NR_CPUs check during hartid search from DT Date: Thu, 7 Feb 2019 17:51:16 -0800 [thread overview] Message-ID: <1549590681-24125-4-git-send-email-atish.patra@wdc.com> (raw) In-Reply-To: <1549590681-24125-1-git-send-email-atish.patra@wdc.com> In non-smp configuration, hartid can be higher that NR_CPUS. riscv_of_processor_hartid should not be compared to hartid to NR_CPUS in that case. Moreover, this function checks all the DT properties of a hart node. NR_CPUS comparison seems out of place. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Anup Patel <anup@brainfault.org> --- arch/riscv/kernel/cpu.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c index f8fa2c63..19edaeae 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -34,10 +34,6 @@ int riscv_of_processor_hartid(struct device_node *node) pr_warn("Found CPU without hart ID\n"); return -(ENODEV); } - if (hart >= NR_CPUS) { - pr_info("Found hart ID %d, which is above NR_CPUs. Disabling this hart\n", hart); - return -(ENODEV); - } if (of_property_read_string(node, "status", &status)) { pr_warn("CPU with hartid=%d has no \"status\" property\n", hart); -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Atish Patra <atish.patra@wdc.com> To: linux-riscv@lists.infradead.org Cc: "Patrick Stählin" <me@packi.ch>, "Albert Ou" <aou@eecs.berkeley.edu>, "Damien Le Moal" <Damien.LeMoal@wdc.com>, "Jason Cooper" <jason@lakedaemon.net>, "Alan Kao" <alankao@andestech.com>, "Dmitriy Cherkasov" <dmitriy@oss-tech.org>, "Anup Patel" <anup@brainfault.org>, "Daniel Lezcano" <daniel.lezcano@linaro.org>, linux-kernel@vger.kernel.org, "Zong Li" <zongbox@gmail.com>, "Atish Patra" <atish.patra@wdc.com>, "Palmer Dabbelt" <palmer@sifive.com>, "Paul Walmsley" <paul.walmsley@sifive.com>, "Andreas Schwab" <schwab@suse.de>, "Marc Zyngier" <marc.zyngier@arm.com>, "Thomas Gleixner" <tglx@linutronix.de> Subject: [v3 PATCH 3/8] RISC-V: Remove NR_CPUs check during hartid search from DT Date: Thu, 7 Feb 2019 17:51:16 -0800 [thread overview] Message-ID: <1549590681-24125-4-git-send-email-atish.patra@wdc.com> (raw) In-Reply-To: <1549590681-24125-1-git-send-email-atish.patra@wdc.com> In non-smp configuration, hartid can be higher that NR_CPUS. riscv_of_processor_hartid should not be compared to hartid to NR_CPUS in that case. Moreover, this function checks all the DT properties of a hart node. NR_CPUS comparison seems out of place. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Anup Patel <anup@brainfault.org> --- arch/riscv/kernel/cpu.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c index f8fa2c63..19edaeae 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -34,10 +34,6 @@ int riscv_of_processor_hartid(struct device_node *node) pr_warn("Found CPU without hart ID\n"); return -(ENODEV); } - if (hart >= NR_CPUS) { - pr_info("Found hart ID %d, which is above NR_CPUs. Disabling this hart\n", hart); - return -(ENODEV); - } if (of_property_read_string(node, "status", &status)) { pr_warn("CPU with hartid=%d has no \"status\" property\n", hart); -- 2.7.4 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2019-02-08 1:52 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-02-08 1:51 [v3 PATCH 0/8] Various SMP related fixes Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 1:51 ` [v3 PATCH 1/8] RISC-V: Do not wait indefinitely in __cpu_up Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 9:01 ` Christoph Hellwig 2019-02-08 9:01 ` Christoph Hellwig 2019-02-08 1:51 ` [v3 PATCH 2/8] RISC-V: Move cpuid to hartid mapping to SMP Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 9:03 ` Christoph Hellwig 2019-02-08 9:03 ` Christoph Hellwig 2019-02-08 22:56 ` Atish Patra 2019-02-08 22:56 ` Atish Patra 2019-02-08 1:51 ` Atish Patra [this message] 2019-02-08 1:51 ` [v3 PATCH 3/8] RISC-V: Remove NR_CPUs check during hartid search from DT Atish Patra 2019-02-08 1:51 ` [v3 PATCH 4/8] RISC-V: Allow hartid-to-cpuid function to fail Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 1:51 ` [v3 PATCH 5/8] RISC-V: Compare cpuid with NR_CPUS before mapping Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 1:51 ` [v3 PATCH 6/8] clocksource/drivers/riscv: Add required checks during clock source init Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 9:04 ` Christoph Hellwig 2019-02-08 9:04 ` Christoph Hellwig 2019-02-08 22:56 ` Atish Patra 2019-02-08 22:56 ` Atish Patra 2019-02-08 1:51 ` [v3 PATCH 7/8] irqchip/irq-sifive-plic:: Check and continue in case of an invalid cpuid Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 1:51 ` [v3 PATCH 8/8] RISC-V: Assign hwcap only according to boot cpu Atish Patra 2019-02-08 1:51 ` Atish Patra 2019-02-08 9:11 ` Christoph Hellwig 2019-02-08 9:11 ` Christoph Hellwig 2019-02-08 23:02 ` Atish Patra 2019-02-08 23:02 ` Atish Patra 2019-02-09 4:26 ` David Abdurachmanov 2019-02-09 4:26 ` David Abdurachmanov 2019-02-09 16:11 ` Marc Zyngier 2019-02-09 16:11 ` Marc Zyngier 2019-02-11 19:02 ` Palmer Dabbelt 2019-02-11 19:02 ` Palmer Dabbelt 2019-02-11 20:03 ` Atish Patra 2019-02-11 20:03 ` Atish Patra 2019-02-11 22:13 ` Marc Zyngier 2019-02-11 22:13 ` Marc Zyngier 2019-02-11 22:23 ` Palmer Dabbelt 2019-02-11 22:23 ` Palmer Dabbelt 2019-02-11 23:25 ` Atish Patra 2019-02-11 23:25 ` Atish Patra 2019-02-11 13:23 ` Andreas Schwab 2019-02-11 13:23 ` Andreas Schwab
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