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Diffstat (limited to 'arch/powerpc/xmon')
-rw-r--r--arch/powerpc/xmon/xmon.c107
1 files changed, 106 insertions, 1 deletions
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 987f441525cb..3a56a639a92e 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -60,6 +60,8 @@ static cpumask_t cpus_in_xmon = CPU_MASK_NONE;
static unsigned long xmon_taken = 1;
static int xmon_owner;
static int xmon_gate;
+#else
+#define xmon_owner 0
#endif /* CONFIG_SMP */
static unsigned long in_xmon __read_mostly = 0;
@@ -202,7 +204,13 @@ Commands:\n\
di dump instructions\n\
df dump float values\n\
dd dump double values\n\
- dl dump the kernel log buffer\n\
+ dl dump the kernel log buffer\n"
+#ifdef CONFIG_PPC64
+ "\
+ dp[#] dump paca for current cpu, or cpu #\n\
+ dpa dump paca for all possible cpus\n"
+#endif
+ "\
dr dump stream of raw bytes\n\
e print exception information\n\
f flush cache\n\
@@ -2009,6 +2017,95 @@ static void xmon_rawdump (unsigned long adrs, long ndump)
printf("\n");
}
+#ifdef CONFIG_PPC64
+static void dump_one_paca(int cpu)
+{
+ struct paca_struct *p;
+
+ if (setjmp(bus_error_jmp) != 0) {
+ printf("*** Error dumping paca for cpu 0x%x!\n", cpu);
+ return;
+ }
+
+ catch_memory_errors = 1;
+ sync();
+
+ p = &paca[cpu];
+
+ printf("paca for cpu 0x%x @ %p:\n", cpu, p);
+
+ printf(" %-*s = %s\n", 16, "possible", cpu_possible(cpu) ? "yes" : "no");
+ printf(" %-*s = %s\n", 16, "present", cpu_present(cpu) ? "yes" : "no");
+ printf(" %-*s = %s\n", 16, "online", cpu_online(cpu) ? "yes" : "no");
+
+#define DUMP(paca, name, format) \
+ printf(" %-*s = %#-*"format"\t(0x%lx)\n", 16, #name, 18, paca->name, \
+ offsetof(struct paca_struct, name));
+
+ DUMP(p, lock_token, "x");
+ DUMP(p, paca_index, "x");
+ DUMP(p, kernel_toc, "lx");
+ DUMP(p, kernelbase, "lx");
+ DUMP(p, kernel_msr, "lx");
+#ifdef CONFIG_PPC_STD_MMU_64
+ DUMP(p, stab_real, "lx");
+ DUMP(p, stab_addr, "lx");
+#endif
+ DUMP(p, emergency_sp, "p");
+ DUMP(p, data_offset, "lx");
+ DUMP(p, hw_cpu_id, "x");
+ DUMP(p, cpu_start, "x");
+ DUMP(p, kexec_state, "x");
+ DUMP(p, __current, "p");
+ DUMP(p, kstack, "lx");
+ DUMP(p, stab_rr, "lx");
+ DUMP(p, saved_r1, "lx");
+ DUMP(p, trap_save, "x");
+ DUMP(p, soft_enabled, "x");
+ DUMP(p, irq_happened, "x");
+ DUMP(p, io_sync, "x");
+ DUMP(p, irq_work_pending, "x");
+ DUMP(p, nap_state_lost, "x");
+
+#undef DUMP
+
+ catch_memory_errors = 0;
+ sync();
+}
+
+static void dump_all_pacas(void)
+{
+ int cpu;
+
+ if (num_possible_cpus() == 0) {
+ printf("No possible cpus, use 'dp #' to dump individual cpus\n");
+ return;
+ }
+
+ for_each_possible_cpu(cpu)
+ dump_one_paca(cpu);
+}
+
+static void dump_pacas(void)
+{
+ unsigned long num;
+ int c;
+
+ c = inchar();
+ if (c == 'a') {
+ dump_all_pacas();
+ return;
+ }
+
+ termch = c; /* Put c back, it wasn't 'a' */
+
+ if (scanhex(&num))
+ dump_one_paca(num);
+ else
+ dump_one_paca(xmon_owner);
+}
+#endif
+
#define isxdigit(c) (('0' <= (c) && (c) <= '9') \
|| ('a' <= (c) && (c) <= 'f') \
|| ('A' <= (c) && (c) <= 'F'))
@@ -2018,6 +2115,14 @@ dump(void)
int c;
c = inchar();
+
+#ifdef CONFIG_PPC64
+ if (c == 'p') {
+ dump_pacas();
+ return;
+ }
+#endif
+
if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n')
termch = c;
scanhex((void *)&adrs);