[Crash-utility] [PATCH v2 09/17] MIPS64: 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: mips64
MEMORY SIZE: 7.5 GB
CPUS: 4
PROCESSOR SPEED: 1800 Mhz
HZ: 250
PAGE SIZE: 16384
KERNEL STACK SIZE: 16384
Signed-off-by: Huacai Chen <chenhuacai(a)loongson.cn>
Signed-off-by: Youling Tang <tangyouling(a)loongson.cn>
---
v1 -> v2:
- No change.
mips64.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 61 insertions(+), 3 deletions(-)
diff --git a/mips64.c b/mips64.c
index b2a499c..26dec24 100644
--- a/mips64.c
+++ b/mips64.c
@@ -17,15 +17,17 @@
#include <elf.h>
#include "defs.h"
+static void mips64_init_page_flags(void);
+static int mips64_translate_pte(ulong pte, void *physaddr,
+ ulonglong pte64);
static int mips64_pgd_vtop(ulong *pgd, ulong vaddr,
physaddr_t *paddr, int verbose);
static int mips64_uvtop(struct task_context *tc, ulong vaddr,
physaddr_t *paddr, int verbose);
static int mips64_kvtop(struct task_context *tc, ulong kvaddr,
physaddr_t *paddr, int verbose);
-static void mips64_init_page_flags(void);
-static int mips64_translate_pte(ulong pte, void *physaddr,
- ulonglong pte64);
+static void mips64_cmd_mach(void);
+static void mips64_display_machine_stats(void);
/*
* 3 Levels paging PAGE_SIZE=16KB
@@ -323,6 +325,59 @@ mips64_kvtop(struct task_context *tc, ulong kvaddr, physaddr_t
*paddr, int verbo
}
/*
+ * Machine dependent command.
+ */
+static void
+mips64_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);
+
+ mips64_display_machine_stats();
+}
+
+/*
+ * "mach" command output.
+ */
+static void
+mips64_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.
*/
static int
@@ -452,6 +507,7 @@ mips64_init(int when)
machdep->is_uvaddr = generic_is_uvaddr;
machdep->uvtop = mips64_uvtop;
machdep->kvtop = mips64_kvtop;
+ machdep->cmd_mach = mips64_cmd_mach;
machdep->vmalloc_start = mips64_vmalloc_start;
machdep->processor_speed = mips64_processor_speed;
machdep->get_stackbase = generic_get_stackbase;
@@ -469,6 +525,8 @@ mips64_init(int when)
mips64_init_page_flags();
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
+ if (!machdep->hz)
+ machdep->hz = 250;
break;
case POST_VM:
--
2.1.0