linux-kernel - [v1 PATCH 1/4] RISC-V: Add RISC-V specific arch_match_cpu_phys

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Message-Id: <20190319222028.4293-1-atish.patra@wdc.com>
Date:   Tue, 19 Mar 2019 15:20:25 -0700
From:   Atish Patra <atish.patra@....com>
To:     linux-riscv@...ts.infradead.org
Cc:     Atish Patra <atish.patra@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Andreas Schwab <schwab@...e.de>,
        Anup Patel <anup@...infault.org>,
        Dmitriy Cherkasov <dmitriy@...-tech.org>,
        Johan Hovold <johan@...nel.org>, linux-kernel@...r.kernel.org,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Damien Le Moal <Damien.LeMoal@....com>,
        Anup Patel <Anup.Patel@....com>
Subject: [v1 PATCH 1/4] RISC-V: Add RISC-V specific arch_match_cpu_phys_id

OF/DT core has a hook for architecture specific logical cpuid to hartid
mapping. By implementing this, we can pass the logical cpu id to cpu
node parsing functions.

Signed-off-by: Atish Patra <atish.patra@....com>
---
 arch/riscv/kernel/smp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 0c41d07e..94db7266 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -70,6 +70,11 @@ void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out)
 	for_each_cpu(cpu, in)
 		cpumask_set_cpu(cpuid_to_hartid_map(cpu), out);
 }
+
+bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
+{
+	return phys_id == cpuid_to_hartid_map(cpu);
+}
 /* Unsupported */
 int setup_profiling_timer(unsigned int multiplier)
 {
-- 
2.21.0