From: Jeff Guo <jia.guo@intel.com>
To: stephen@networkplumber.org, bruce.richardson@intel.com,
ferruh.yigit@intel.com, konstantin.ananyev@intel.com,
gaetan.rivet@6wind.com, jingjing.wu@intel.com,
thomas@monjalon.net, motih@mellanox.com, matan@mellanox.com,
harry.van.haaren@intel.com, qi.z.zhang@intel.com,
shaopeng.he@intel.com, bernard.iremonger@intel.com
Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org,
jia.guo@intel.com, helin.zhang@intel.com
Subject: [dpdk-dev] [PATCH V4 5/9] bus: add helper to handle sigbus
Date: Fri, 29 Jun 2018 18:24:27 +0800 [thread overview]
Message-ID: <1530267871-7161-6-git-send-email-jia.guo@intel.com> (raw)
In-Reply-To: <1530267871-7161-1-git-send-email-jia.guo@intel.com>
This patch aim to add a helper to iterate all buses to find the
corresponding bus to handle the sigbus error.
Signed-off-by: Jeff Guo <jia.guo@intel.com>
---
v4->v3:
split patches to be small and clear.
---
lib/librte_eal/common/eal_common_bus.c | 34 +++++++++++++++++++++++++++++++++-
lib/librte_eal/common/eal_private.h | 11 +++++++++++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
index 0943851..34c4f2d 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -37,6 +37,7 @@
#include <rte_bus.h>
#include <rte_debug.h>
#include <rte_string_fns.h>
+#include <rte_errno.h>
#include "eal_private.h"
@@ -220,7 +221,6 @@ rte_bus_find_by_device_name(const char *str)
return rte_bus_find(NULL, bus_can_parse, name);
}
-
/*
* Get iommu class of devices on the bus.
*/
@@ -242,3 +242,35 @@ rte_bus_get_iommu_class(void)
}
return mode;
}
+
+static int
+bus_handle_sigbus(const struct rte_bus *bus,
+ const void *failure_addr)
+{
+ return !(bus->sigbus_handler && bus->sigbus_handler(failure_addr) <= 0);
+}
+
+int
+rte_bus_sigbus_handler(const void *failure_addr)
+{
+ struct rte_bus *bus;
+ int old_errno = rte_errno;
+ int ret = 0;
+
+ rte_errno = 0;
+
+ bus = rte_bus_find(NULL, bus_handle_sigbus, failure_addr);
+ if (bus == NULL) {
+ RTE_LOG(ERR, EAL, "No bus can handle the sigbus error!");
+ ret = -1;
+ } else if (rte_errno != 0) {
+ RTE_LOG(ERR, EAL, "Failed to handle the sigbus error!");
+ ret = -1;
+ }
+
+ /* if sigbus not be handled, return back old errno. */
+ if (ret)
+ rte_errno = old_errno;
+
+ return ret;
+}
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index bdadc4d..9517f2b 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -258,4 +258,15 @@ int rte_mp_channel_init(void);
*/
void dev_callback_process(char *device_name, enum rte_dev_event_type event);
+
+/**
+ * Iterate all buses to find the corresponding bus, to handle the sigbus error.
+ * @param failure_addr
+ * Pointer of the fault address of the sigbus error.
+ *
+ * @return
+ * 0 on success.
+ * -1 on error
+ */
+int rte_bus_sigbus_handler(const void *failure_addr);
#endif /* _EAL_PRIVATE_H_ */
--
2.7.4
next prev parent reply other threads:[~2018-06-29 10:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-29 10:24 [dpdk-dev] [PATCH V4 0/9] hot plug failure handle mechanism Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 1/9] bus: introduce hotplug failure handler Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 2/9] bus/pci: implement hotplug handler operation Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 3/9] bus: introduce sigbus handler Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 4/9] bus/pci: implement sigbus handler operation Jeff Guo
2018-06-29 10:24 ` Jeff Guo [this message]
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 6/9] eal: add failure handle mechanism for hot plug Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 7/9] igb_uio: fix uio release issue when hot unplug Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 8/9] app/testpmd: show example to handle " Jeff Guo
2018-06-29 10:24 ` [dpdk-dev] [PATCH V4 9/9] app/testpmd: enable device hotplug monitoring Jeff Guo
-- strict thread matches above, loose matches on Subject: below --
2017-06-29 4:37 [dpdk-dev] [PATCH v3 0/2] add uevent api for hot plug Jeff Guo
2018-06-29 10:30 ` [dpdk-dev] [PATCH V4 0/9] hot plug failure handle mechanism Jeff Guo
2018-06-29 10:30 ` [dpdk-dev] [PATCH V4 5/9] bus: add helper to handle sigbus Jeff Guo
2018-06-29 10:51 ` Ananyev, Konstantin
2018-06-29 11:23 ` Guo, Jia
2018-06-29 12:21 ` Ananyev, Konstantin
2018-06-29 12:52 ` Gaëtan Rivet
2018-07-03 11:24 ` Guo, Jia
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1530267871-7161-6-git-send-email-jia.guo@intel.com \
--to=jia.guo@intel.com \
--cc=bernard.iremonger@intel.com \
--cc=bruce.richardson@intel.com \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@intel.com \
--cc=gaetan.rivet@6wind.com \
--cc=harry.van.haaren@intel.com \
--cc=helin.zhang@intel.com \
--cc=jblunck@infradead.org \
--cc=jingjing.wu@intel.com \
--cc=konstantin.ananyev@intel.com \
--cc=matan@mellanox.com \
--cc=motih@mellanox.com \
--cc=qi.z.zhang@intel.com \
--cc=shaopeng.he@intel.com \
--cc=shreyansh.jain@nxp.com \
--cc=stephen@networkplumber.org \
--cc=thomas@monjalon.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).