RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo

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:
processor	: 0
hart		: 1
isa		: rv64imafdc
mmu		: sv48

processor	: 1
hart		: 0
isa		: rv64imafdc
mmu		: sv48

processor	: 2
hart		: 2
isa		: rv64imafdc
mmu		: sv48

processor	: 3
hart		: 3
isa		: rv64imafdc
mmu		: sv48

Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index cccc6f61c5382b50e95bcdc6c1ffe7877969671c..3a5a2ee31547b2ca1f3ec0f0cf613ff3448e85e3 100644 (file)
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -81,7 +81,7 @@ static void print_isa(struct seq_file *f, const char *orig_isa)
 #endif
 
        /* Print the base ISA, as we already know it's legal. */
-       seq_puts(f, "isa\t: ");
+       seq_puts(f, "isa\t\t: ");
        seq_write(f, isa, 5);
        isa += 5;
 
@@ -96,6 +96,7 @@ static void print_isa(struct seq_file *f, const char *orig_isa)
                        isa++;
                }
        }
+       seq_puts(f, "\n");
 
        /*
         * If we were given an unsupported ISA in the device tree then print
@@ -116,7 +117,7 @@ static void print_mmu(struct seq_file *f, const char *mmu_type)
                return;
 #endif
 
-       seq_printf(f, "mmu\t: %s\n", mmu_type+6);
+       seq_printf(f, "mmu\t\t: %s\n", mmu_type+6);
 }
 
 static void *c_start(struct seq_file *m, loff_t *pos)
@@ -144,14 +145,15 @@ 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, "processor\t: %lu\n", cpu_id);
+       seq_printf(m, "hart\t\t: %lu\n", cpuid_to_hartid_map(cpu_id));
        if (!of_property_read_string(node, "riscv,isa", &isa))
                print_isa(m, isa);
        if (!of_property_read_string(node, "mmu-type", &mmu))
                print_mmu(m, mmu);
        if (!of_property_read_string(node, "compatible", &compat)
            && strcmp(compat, "riscv"))
-               seq_printf(m, "uarch\t: %s\n", compat);
+               seq_printf(m, "uarch\t\t: %s\n", compat);
        seq_puts(m, "\n");
 
        return 0;