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&gt; Signed-off-by: Youling Tang <tangyouling(a)loongson.cn&gt; --- mips64.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 61 insertions(+), 3 deletions(-) diff --git a/mips64.c b/mips64.c index a0d7220..18e763d 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 @@ -330,6 +332,59 @@ 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 @@ -459,6 +514,7 @@ 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; @@ -476,6 +532,8 @@ 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