powerpc/xmon: Add kstack base to paca dump

Message ID 1507546772-31932-1-git-send-email-mpe@ellerman.id.au
State New
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  • powerpc/xmon: Add kstack base to paca dump
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Commit Message

Michael Ellerman Oct. 9, 2017, 10:59 a.m.
When dumping the paca in xmon we currently show kstack. Although it's
not hard it's a bit fiddly to work out what the bounds of the kernel
stack should be based on the kstack value.

To make life easier and "kstack_base" which is the base (lowest
address) of the kernel stack, eg:

 kstack               = 0xc0000000f1a7be30      (0x258)
 kstack_base          = 0xc0000000f1a78000

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 arch/powerpc/xmon/xmon.c | 1 +
 1 file changed, 1 insertion(+)


diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 429339df0e8e..b45741c50253 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -2388,6 +2388,7 @@  static void dump_one_paca(int cpu)
 	DUMP(p, __current, "p");
 	DUMP(p, kstack, "lx");
+	printf(" kstack_base          = 0x%016lx\n", p->kstack & ~(THREAD_SIZE - 1));
 	DUMP(p, stab_rr, "lx");
 	DUMP(p, saved_r1, "lx");
 	DUMP(p, trap_save, "x");