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authorAtish Patra <atish.patra@wdc.com>2019-04-25 00:47:58 +0300
committerPalmer Dabbelt <palmer@sifive.com>2019-04-30 19:47:44 +0300
commit70114560b2855853126c65cccdc49a33187327d0 (patch)
tree81ad369715ce9a6201d998647577bdc429344169 /arch/riscv
parentfd7f744caed82dcfd3a23bce8843836d6e94d584 (diff)
downloadlinux-70114560b2855853126c65cccdc49a33187327d0.tar.xz
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. Fix the instances where logical cpuid is expected as an argument in of_get_cpu_node. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/kernel/cpu.c3
-rw-r--r--arch/riscv/kernel/smp.c6
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index cf2fca12414a..c8d2a3223099 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -136,8 +136,7 @@ static void c_stop(struct seq_file *m, void *v)
static int c_show(struct seq_file *m, void *v)
{
unsigned long cpu_id = (unsigned long)v - 1;
- struct device_node *node = of_get_cpu_node(cpuid_to_hartid_map(cpu_id),
- NULL);
+ struct device_node *node = of_get_cpu_node(cpu_id, NULL);
const char *compat, *isa, *mmu;
seq_printf(m, "processor\t: %lu\n", cpu_id);
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 0c41d07ec281..89251f8ab754 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -70,6 +70,12 @@ 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)
{