[V5,3/7] bus: add sigbus handler
diff mbox series

Message ID 1530776333-30318-4-git-send-email-jia.guo@intel.com
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show
Series
  • hot plug failure handle mechanism
Related show

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Jeff Guo July 5, 2018, 7:38 a.m. UTC
When device be hotplug out, if data path still read/write device, the
sigbus error will occur, this error need to be handled. So a handler
need to be here to capture the signal and handle it correspondingly.

This patch introduces a bus ops to handle sigbus error, it is a bus
specific behavior,so that each kind of bus can implement its own logic
case by case.

Signed-off-by: Jeff Guo <jia.guo@intel.com>
---
v5->v4:
refine log and commit log
---
 lib/librte_eal/common/include/rte_bus.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Comments

He, Shaopeng July 6, 2018, 3:17 p.m. UTC | #1
> -----Original Message-----
> From: Guo, Jia
> 
> When device be hotplug out, if data path still read/write device, the
> sigbus error will occur, this error need to be handled. So a handler
> need to be here to capture the signal and handle it correspondingly.
> 
> This patch introduces a bus ops to handle sigbus error, it is a bus
> specific behavior,so that each kind of bus can implement its own logic
> case by case.
> 
> Signed-off-by: Jeff Guo <jia.guo@intel.com>

Acked-by: Shaopeng He <shaopeng.he@intel.com>

Patch
diff mbox series

diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index 8a993cf..d753575 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -181,6 +181,20 @@  typedef int (*rte_bus_parse_t)(const char *name, void *addr);
 typedef int (*rte_bus_hotplug_failure_handler_t)(struct rte_device *dev);
 
 /**
+ * Implementation a specific sigbus handler, which is responsible
+ * for handle the sigbus error which is original memory error, or specific
+ * memory error that caused of hot unplug.
+ * @param failure_addr
+ *	Pointer of the fault address of the sigbus error.
+ *
+ * @return
+ *	0 for success handle the sigbus.
+ *	1 for no bus handle the sigbus.
+ *	-1 for failed to handle the sigbus
+ */
+typedef int (*rte_bus_sigbus_handler_t)(const void *failure_addr);
+
+/**
  * Bus scan policies
  */
 enum rte_bus_scan_mode {
@@ -226,6 +240,8 @@  struct rte_bus {
 	rte_bus_get_iommu_class_t get_iommu_class; /**< Get iommu class */
 	rte_bus_hotplug_failure_handler_t hotplug_failure_handler;
 					/**< handle hotplug failure on bus */
+	rte_bus_sigbus_handler_t sigbus_handler; /**< handle sigbus error */
+
 };
 
 /**