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SubjectRe: [PATCH] RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo
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On Wed, 12 Sep 2018 07:38:22 PDT (-0700), anup@brainfault.org wrote:
> Currently, /proc/cpuinfo show logical CPU ID as Hart ID which
> is in-correct. This patch shows CPU ID and Hart ID separately
> in /proc/cpuinfo using cpuid_to_hardid_map().
>
> With this patch, contents of /proc/cpuinfo looks as follows:
> cpu : 0
> hart : 1
> isa : rv64imafdcsu
> mmu : sv48
>
> cpu : 1
> hart : 0
> isa : rv64imafdcsu
> mmu : sv48
>
> cpu : 2
> hart : 3
> isa : rv64imafdcsu
> mmu : sv48
>
> cpu : 3
> hart : 2
> isa : rv64imafdcsu
> mmu : sv48
>
> Signed-off-by: Anup Patel <anup@brainfault.org>
> ---
> arch/riscv/kernel/cpu.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
> index f0f0ec2737b7..7c1342e242e6 100644
> --- a/arch/riscv/kernel/cpu.c
> +++ b/arch/riscv/kernel/cpu.c
> @@ -87,7 +87,8 @@ static int c_show(struct seq_file *m, void *v)
> NULL);
> const char *compat, *isa, *mmu;
>
> - seq_printf(m, "hart\t: %lu\n", cpu_id);
> + seq_printf(m, "cpu\t: %lu\n", cpu_id);
> + seq_printf(m, "hart\t: %lu\n", cpuid_to_hardid_map(cpu_id));
> if (!of_property_read_string(node, "riscv,isa", &isa)
> && isa[0] == 'r'
> && isa[1] == 'v')

I like this, but it doesn't appear to apply. Do you mind sending something
against Linus' master? Then I should be able to sort it out.

Thanks!

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