[Crash-utility] [PATCH v1 04/10] LoongArch64: Add 'mach' command support
The 'mach' command can only get some basic machine state information, such
as machine type, processor speed, etc.
E.g. With this patch:
crash> mach
MACHINE TYPE: loongarch64
MEMORY SIZE: 64 GB
CPUS: 16
PROCESSOR SPEED: 2200 Mhz
HZ: 250
PAGE SIZE: 16384
KERNEL STACK SIZE: 16384
Co-developed-by: Youling Tang <tangyouling(a)loongson.cn>
Signed-off-by: Youling Tang <tangyouling(a)loongson.cn>
Signed-off-by: Ming Wang <wangming01(a)loongson.cn>
---
loongarch64.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/loongarch64.c b/loongarch64.c
index 1a904bd..a4124b0 100644
--- a/loongarch64.c
+++ b/loongarch64.c
@@ -27,6 +27,8 @@ static int loongarch64_kvtop(struct task_context *tc, ulong kvaddr,
static int loongarch64_translate_pte(ulong pte, void *physaddr,
ulonglong pte64);
+static void loongarch64_cmd_mach(void);
+static void loongarch64_display_machine_stats(void);
/*
* 3 Levels paging PAGE_SIZE=16KB
* PGD | PMD | PTE | OFFSET |
@@ -312,6 +314,59 @@ loongarch64_kvtop(struct task_context *tc, ulong kvaddr, physaddr_t
*paddr, int
verbose);
}
+/*
+ * Machine dependent command.
+ */
+static void
+loongarch64_cmd_mach(void)
+{
+ int c;
+
+ while ((c = getopt(argcnt, args, "cmo")) != EOF) {
+ switch (c) {
+ case 'c':
+ case 'm':
+ case 'o':
+ option_not_supported(c);
+ break;
+ default:
+ argerrs++;
+ break;
+ }
+ }
+
+ if (argerrs)
+ cmd_usage(pc->curcmd, SYNOPSIS);
+
+ loongarch64_display_machine_stats();
+}
+
+/*
+ * "mach" command output.
+ */
+static void
+loongarch64_display_machine_stats(void)
+{
+ struct new_utsname *uts;
+ char buf[BUFSIZE];
+ ulong mhz;
+
+ uts = &kt->utsname;
+
+ fprintf(fp, " MACHINE TYPE: %s\n", uts->machine);
+ fprintf(fp, " MEMORY SIZE: %s\n", get_memory_size(buf));
+ fprintf(fp, " CPUS: %d\n", get_cpus_to_display());
+ fprintf(fp, " PROCESSOR SPEED: ");
+ if ((mhz = machdep->processor_speed()))
+ fprintf(fp, "%ld Mhz\n", mhz);
+ else
+ fprintf(fp, "(unknown)\n");
+ fprintf(fp, " HZ: %d\n", machdep->hz);
+ fprintf(fp, " PAGE SIZE: %d\n", PAGESIZE());
+ fprintf(fp, " KERNEL STACK SIZE: %ld\n", STACKSIZE());
+
+}
+
/*
* Accept or reject a symbol from the kernel namelist.
*/
@@ -441,6 +496,7 @@ loongarch64_init(int when)
machdep->is_uvaddr = generic_is_uvaddr;
machdep->uvtop = loongarch64_uvtop;
machdep->kvtop = loongarch64_kvtop;
+ machdep->cmd_mach = loongarch64_cmd_mach;
machdep->vmalloc_start = loongarch64_vmalloc_start;
machdep->processor_speed = loongarch64_processor_speed;
machdep->get_stackbase = generic_get_stackbase;
@@ -457,6 +513,9 @@ loongarch64_init(int when)
case POST_GDB:
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
+ if (!machdep->hz)
+ machdep->hz = 250;
+ break;
case POST_VM:
break;
--
2.34.1