We needn't the the whole backtrace other than one-line message in
the error reporting interrupt handler. For errors triggered by
access PCI config space or MMIO, we replace "WARN(1, ...)" with
pr_err() and dump_stack().
Signed-off-by: Gavin Shan <sha...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/eeh.c | 9 +++++++--
arch/powerpc/platforms/powernv/eeh-ioda.c | 25 ++++++++++++++++---------
2 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index 60deb42..38e4b40 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -324,7 +324,9 @@ static int eeh_phb_check_failure(struct eeh_pe *pe)
eeh_serialize_unlock(flags);
eeh_send_failure_event(phb_pe);
- WARN(1, "EEH: PHB failure detected\n");
+ pr_err("EEH: PHB#%x failure detected\n",
+ phb_pe->phb->global_number);
+ dump_stack();
return 1;
out:
@@ -453,7 +455,10 @@ int eeh_dev_check_failure(struct eeh_dev *edev)
* a stack trace will help the device-driver authors figure
* out what happened. So print that out.
*/
- WARN(1, "EEH: failure detected\n");
+ pr_err("EEH: Frozen PE#%x detected on PHB#%x\n",
+ pe->addr, pe->phb->global_number);
+ dump_stack();
+
return 1;
dn_unlock:
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c
b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 85025d7..0cd1c4a 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -853,11 +853,14 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
phb->eeh_state |= PNV_EEH_STATE_REMOVED;
}
- WARN(1, "EEH: dead IOC detected\n");
+ pr_err("EEH: dead IOC detected\n");
ret = 4;
goto out;
- } else if (severity == OPAL_EEH_SEV_INF)
+ } else if (severity == OPAL_EEH_SEV_INF) {
+ pr_info("EEH: IOC informative error "
+ "detected\n");
ioda_eeh_hub_diag(hose);
+ }
break;
case OPAL_EEH_PHB_ERROR:
@@ -865,8 +868,8 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
if (ioda_eeh_get_phb_pe(hose, pe))
break;
- WARN(1, "EEH: dead PHB#%x detected\n",
- hose->global_number);
+ pr_err("EEH: dead PHB#%x detected\n",
+ hose->global_number);
phb->eeh_state |= PNV_EEH_STATE_REMOVED;
ret = 3;
goto out;
@@ -874,20 +877,24 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
if (ioda_eeh_get_phb_pe(hose, pe))
break;
- WARN(1, "EEH: fenced PHB#%x detected\n",
- hose->global_number);
+ pr_err("EEH: fenced PHB#%x detected\n",
+ hose->global_number);
ret = 2;
goto out;
- } else if (severity == OPAL_EEH_SEV_INF)
+ } else if (severity == OPAL_EEH_SEV_INF) {
+ pr_info("EEH: PHB#%x informative error "
+ "detected\n",
+ hose->global_number);
ioda_eeh_phb_diag(hose);
+ }
break;
case OPAL_EEH_PE_ERROR:
if (ioda_eeh_get_pe(hose, frozen_pe_no, pe))
break;
- WARN(1, "EEH: Frozen PE#%x on PHB#%x detected\n",
- (*pe)->addr, (*pe)->phb->global_number);
+ pr_err("EEH: Frozen PE#%x on PHB#%x detected\n",
+ (*pe)->addr, (*pe)->phb->global_number);
ret = 1;
goto out;
}
--
1.7.5.4
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