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authorJose Abreu <Jose.Abreu@synopsys.com>2017-08-29 10:14:20 +0100
committerVineet Gupta <vgupta@synopsys.com>2017-09-01 11:26:29 -0700
commitaa7e3a5e8b63628c7fc131effc163ade08ced41b (patch)
treea831af6cd0134d6bed0c6a7619a74fb624d6d1a4 /arch/arc/kernel/troubleshoot.c
parentARC: [plat-hsdk] initial port for HSDK board (diff)
downloadlinux-dev-aa7e3a5e8b63628c7fc131effc163ade08ced41b.tar.xz
linux-dev-aa7e3a5e8b63628c7fc131effc163ade08ced41b.zip
ARC: Show fault information passed to show_kernel_fault_diag()
Currently we pass a string argument to show_kernel_fault_diag() which describes the reason for the fault. This is not being used so just add a pr_info() which outputs the fault information. With this change we get from: | | Path: /bin/busybox | CPU: 0 PID: 92 Comm: modprobe Not tainted 4.12.0-rc6 #30 | task: 9a254780 task.stack: 9a212000 | | [ECR ]: 0x00200400 => Other Fatal Err | to: | | Unhandled Machine Check Exception | Path: /bin/busybox | CPU: 0 PID: 92 Comm: modprobe Not tainted 4.12.0-rc6 #37 | task: 9a240780 task.stack: 9a226000 | |[ECR ]: 0x00200400 => Machine Check (Other Fatal Err) | Which can help debugging. Cc: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to '')
-rw-r--r--arch/arc/kernel/troubleshoot.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c
index f9caf79186d4..7e94476f3994 100644
--- a/arch/arc/kernel/troubleshoot.c
+++ b/arch/arc/kernel/troubleshoot.c
@@ -140,7 +140,7 @@ static void show_ecr_verbose(struct pt_regs *regs)
} else if (vec == ECR_V_ITLB_MISS) {
pr_cont("Insn could not be fetched\n");
} else if (vec == ECR_V_MACH_CHK) {
- pr_cont("%s\n", (cause_code == 0x0) ?
+ pr_cont("Machine Check (%s)\n", (cause_code == 0x0) ?
"Double Fault" : "Other Fatal Err");
} else if (vec == ECR_V_PROTV) {
@@ -233,6 +233,9 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
{
current->thread.fault_address = address;
+ /* Show fault description */
+ pr_info("\n%s\n", str);
+
/* Caller and Callee regs */
show_regs(regs);