diff mbox

[RESEND,v3.19-rc2] kdb: Remove stack dump when entering kgdb due to NMI

Message ID 1420645352-2790-1-git-send-email-daniel.thompson@linaro.org
State Accepted
Commit 5454388113938d9592d6a6d5424469014da4ee86
Headers show

Commit Message

Daniel Thompson Jan. 7, 2015, 3:42 p.m. UTC 
Issuing a stack dump feels ergonomically wrong when entering due to NMI.

Entering due to NMI is normally a reaction to a user request, either the
NMI button on a server or a "magic knock" on a UART. Therefore the
backtrace behaviour on entry due to NMI should be like SysRq-g (no stack
dump) rather than like oops.

Note also that the stack dump does not offer any information that
cannot be trivial retrieved using the 'bt' command.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
---
 kernel/debug/kdb/kdb_main.c | 1 -
 1 file changed, 1 deletion(-)

--
1.9.3
diff mbox

Patch

diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 379650b984f8..f9ba42363132 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -1207,7 +1207,6 @@  static int kdb_local(kdb_reason_t reason, int error, struct pt_regs *regs,
 		kdb_printf("due to NonMaskable Interrupt @ "
 			   kdb_machreg_fmt "\n",
 			   instruction_pointer(regs));
-		kdb_dumpregs(regs);
 		break;
 	case KDB_REASON_SSTEP:
 	case KDB_REASON_BREAK: