[PATCH] RISCV64: Add more system properties to the 'mach' command
by Austin Kim
Currently, 'mach' command displays only basic system properties for
RISC-V-based vmcores. This commit enhances the mach command by adding
additional system details, including virtual memory addresses, IRQ stacks,
and overflow stacks.
(before)
crash> mach
MACHINE TYPE: riscv64
MEMORY SIZE: 4 GB
CPUS: 4
PROCESSOR SPEED: (unknown)
HZ: 100
PAGE SIZE: 4096
KERNEL STACK SIZE: 16384
(after)
crash> mach
MACHINE TYPE: riscv64
MEMORY SIZE: 4 GB
CPUS: 4
PROCESSOR SPEED: (unknown)
HZ: 100
PAGE SIZE: 4096
KERNEL VIRTUAL BASE: ffffffd800000000
KERNEL MODULES BASE: ffffffff01d08000
KERNEL VMALLOC BASE: ffffffc800000000
KERNEL VMEMMAP BASE: ffffffc700000000
KERNEL STACK SIZE: 16384
IRQ STACK SIZE: 16384
IRQ STACKS:
CPU 0: ffffffc800000000
CPU 1: ffffffc800008000
CPU 2: ffffffc800010000
CPU 3: ffffffc800018000
OVERFLOW STACK SIZE: 4096
OVERFLOW STACKS:
CPU 0: ffffffd8fc7433c0
CPU 1: ffffffd8fc75f3c0
CPU 2: ffffffd8fc77b3c0
CPU 3: ffffffd8fc7973c0
Signed-off-by: Austin Kim <austindh.kim(a)gmail.com>
---
riscv64.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/riscv64.c b/riscv64.c
index 98bf02a..d934b22 100644
--- a/riscv64.c
+++ b/riscv64.c
@@ -135,6 +135,7 @@ static void riscv64_get_struct_page_size(struct machine_specific *ms)
static void
riscv64_display_machine_stats(void)
{
+ int i, pad;
struct new_utsname *uts;
char buf[BUFSIZE];
ulong mhz;
@@ -151,7 +152,31 @@ riscv64_display_machine_stats(void)
fprintf(fp, "(unknown)\n");
fprintf(fp, " HZ: %d\n", machdep->hz);
fprintf(fp, " PAGE SIZE: %d\n", PAGESIZE());
+ fprintf(fp, "KERNEL VIRTUAL BASE: %lx\n", machdep->machspec->page_offset);
+ fprintf(fp, "KERNEL MODULES BASE: %lx\n", machdep->machspec->modules_vaddr);
+ fprintf(fp, "KERNEL VMALLOC BASE: %lx\n", machdep->machspec->vmalloc_start_addr);
+ fprintf(fp, "KERNEL VMEMMAP BASE: %lx\n", machdep->machspec->vmemmap_vaddr);
fprintf(fp, " KERNEL STACK SIZE: %ld\n", STACKSIZE());
+ if (machdep->machspec->irq_stack_size) {
+ fprintf(fp, " IRQ STACK SIZE: %ld\n",
+ machdep->machspec->irq_stack_size);
+ fprintf(fp, " IRQ STACKS:\n");
+ for (i = 0; i < kt->cpus; i++) {
+ pad = (i < 10) ? 3 : (i < 100) ? 2 : (i < 1000) ? 1 : 0;
+ fprintf(fp, "%s CPU %d: %lx\n", space(pad), i,
+ machdep->machspec->irq_stacks[i]);
+ }
+ }
+ if (machdep->machspec->overflow_stack_size) {
+ fprintf(fp, "OVERFLOW STACK SIZE: %ld\n",
+ machdep->machspec->overflow_stack_size);
+ fprintf(fp, " OVERFLOW STACKS:\n");
+ for (i = 0; i < kt->cpus; i++) {
+ pad = (i < 10) ? 3 : (i < 100) ? 2 : (i < 1000) ? 1 : 0;
+ fprintf(fp, "%s CPU %d: %lx\n", space(pad), i,
+ machdep->machspec->overflow_stacks[i]);
+ }
+ }
}
static void
--
2.34.1
2 months
- 2
- 1