[Crash-utility] [PATCH v1 2/2] [ppc] Backtrace support for active tasks

[Suzuki K. Poulose]

Since we have pt_regs read from the ELF note for active / panic task,
in both KDUMP and compressed diskdump, reuse the same function.

Signed-off-by: Suzuki K. Poulose <suzuki at in.ibm.com>
---

 netdump.c |    2 ++
 ppc.c     |    7 +++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/netdump.c b/netdump.c
index d23e45c..9e9d5f9 100644
--- a/netdump.c
+++ b/netdump.c
@@ -1696,6 +1696,8 @@ dump_Elf32_Nhdr(Elf32_Off offset, int store)
 				}
 			}
 		}
+		if (nd->num_prstatus_notes > 0)
+			pc->flags2 |= ELF_NOTES;
 		break;
 	case NT_PRPSINFO:
 		netdump_print("(NT_PRPSINFO)\n");
diff --git a/ppc.c b/ppc.c
index 078da4e..521fec2 100755
--- a/ppc.c
+++ b/ppc.c
@@ -1196,8 +1196,11 @@ ppc_dumpfile_stack_frame(struct bt_info *bt, ulong *getpc, ulong *getsp)
 {
 	struct syment *sp;
 
-	/* For KDUMP get the SP, PC from pt_regs stored in the core */
-	if (pc->flags & KDUMP) {
+	/* 
+	 * For KDUMP and compressed KDUMP get the SP, PC from pt_regs 
+	 * read from the Elf Note. 
+	 */
+	if (ELF_NOTES_VALID()) {
 		ppc_kdump_stack_frame(bt, getpc, getsp);
 		return;
 	}