Similarly to dev/netdev/etc printk helpers, add standard printk helpers
for the RDMA subsystem.
Example output:
efa 0000:00:06.0 efa_0: Hello World!
efa_0: Hello World! (no parent device set)
(NULL ib_device): Hello World! (ibdev is NULL)
Cc: Jason Baron <jbaron@xxxxxxxxxx>
Suggested-by: Jason Gunthorpe <jgg@xxxxxxxx>
Suggested-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Reviewed-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
---
drivers/infiniband/core/device.c | 60 ++++++++++++++++++++++++++++++++++++++++
include/linux/dynamic_debug.h | 11 ++++++++
include/rdma/ib_verbs.h | 30 ++++++++++++++++++++
lib/dynamic_debug.c | 37 +++++++++++++++++++++++++
4 files changed, 138 insertions(+)
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index fcbf2d4c865d..76088655f06e 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -197,6 +197,66 @@ static int ib_security_change(struct notifier_block *nb, unsigned long event,
static void ib_policy_change_task(struct work_struct *work);
static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task);
+static void __ibdev_printk(const char *level, const struct ib_device *ibdev,
+ struct va_format *vaf)
+{
+ if (ibdev && ibdev->dev.parent)
+ dev_printk_emit(level[1] - '0',
+ ibdev->dev.parent,
+ "%s %s %s: %pV",
+ dev_driver_string(ibdev->dev.parent),
+ dev_name(ibdev->dev.parent),
+ dev_name(&ibdev->dev),
+ vaf);
+ else if (ibdev)
+ printk("%s%s: %pV",
+ level, dev_name(&ibdev->dev), vaf);
+ else
+ printk("%s(NULL ib_device): %pV", level, vaf);
+}
+
+void ibdev_printk(const char *level, const struct ib_device *ibdev,
+ const char *format, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, format);
+
+ vaf.fmt = format;
+ vaf.va = &args;
+
+ __ibdev_printk(level, ibdev, &vaf);
+
+ va_end(args);
+}
+EXPORT_SYMBOL(ibdev_printk);
+
+#define define_ibdev_printk_level(func, level) \
+void func(const struct ib_device *ibdev, const char *fmt, ...) \
+{ \
+ struct va_format vaf; \
+ va_list args; \
+ \
+ va_start(args, fmt); \
+ \
+ vaf.fmt = fmt; \
+ vaf.va = &args; \
+ \
+ __ibdev_printk(level, ibdev, &vaf); \
+ \
+ va_end(args); \
+} \
+EXPORT_SYMBOL(func);
+
+define_ibdev_printk_level(ibdev_emerg, KERN_EMERG);
+define_ibdev_printk_level(ibdev_alert, KERN_ALERT);
+define_ibdev_printk_level(ibdev_crit, KERN_CRIT);
+define_ibdev_printk_level(ibdev_err, KERN_ERR);
+define_ibdev_printk_level(ibdev_warn, KERN_WARNING);
+define_ibdev_printk_level(ibdev_notice, KERN_NOTICE);
+define_ibdev_printk_level(ibdev_info, KERN_INFO);
+
static struct notifier_block ibdev_lsm_nb = {
.notifier_call = ib_security_change,
};
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index c2be029b9b53..6c809440f319 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -71,6 +71,13 @@ void __dynamic_netdev_dbg(struct _ddebug *descriptor,
const struct net_device *dev,
const char *fmt, ...);
+struct ib_device;
+
+extern __printf(3, 4)
+void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
+ const struct ib_device *ibdev,
+ const char *fmt, ...);
+
#define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt) \
static struct _ddebug __aligned(8) \
__attribute__((section("__verbose"))) name = { \
@@ -154,6 +161,10 @@ void __dynamic_netdev_dbg(struct _ddebug *descriptor,
_dynamic_func_call(fmt, __dynamic_netdev_dbg, \
dev, fmt, ##__VA_ARGS__)
+#define dynamic_ibdev_dbg(dev, fmt, ...) \
+ _dynamic_func_call(fmt, __dynamic_ibdev_dbg, \
+ dev, fmt, ##__VA_ARGS__)
+
#define dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
groupsize, buf, len, ascii) \
_dynamic_func_call_no_desc(__builtin_constant_p(prefix_str) ? prefix_str : "hexdump", \
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 737ef5ed3930..de8724e5a727 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -74,6 +74,36 @@ extern struct workqueue_struct *ib_wq;
extern struct workqueue_struct *ib_comp_wq;
extern struct workqueue_struct *ib_comp_unbound_wq;
+__printf(3, 4) __cold
+void ibdev_printk(const char *level, const struct ib_device *ibdev,
+ const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_emerg(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_alert(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_crit(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_err(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_warn(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_notice(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_info(const struct ib_device *ibdev, const char *format, ...);
+
+#if defined(CONFIG_DYNAMIC_DEBUG)
+#define ibdev_dbg(__dev, format, args...) \
+ dynamic_ibdev_dbg(__dev, format, ##args)
+#elif defined(DEBUG)
+#define ibdev_dbg(__dev, format, args...) \
+ ibdev_printk(KERN_DEBUG, __dev, format, ##args)
+#else
+__printf(2, 3) __cold
+static inline
+void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {}
+#endif
+
union ib_gid {
u8 raw[16];
struct {
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 7bdf98c37e91..8a16c2d498e9 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -37,6 +37,8 @@
#include <linux/device.h>
#include <linux/netdevice.h>
+#include <rdma/ib_verbs.h>
+
extern struct _ddebug __start___verbose[];
extern struct _ddebug __stop___verbose[];
@@ -636,6 +638,41 @@ EXPORT_SYMBOL(__dynamic_netdev_dbg);
#endif
+#if IS_ENABLED(CONFIG_INFINIBAND)
+
+void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
+ const struct ib_device *ibdev, const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ if (ibdev && ibdev->dev.parent) {
+ char buf[PREFIX_SIZE];
+
+ dev_printk_emit(LOGLEVEL_DEBUG, ibdev->dev.parent,
+ "%s%s %s %s: %pV",
+ dynamic_emit_prefix(descriptor, buf),
+ dev_driver_string(ibdev->dev.parent),
+ dev_name(ibdev->dev.parent),
+ dev_name(&ibdev->dev),
+ &vaf);
+ } else if (ibdev) {
+ printk(KERN_DEBUG "%s: %pV", dev_name(&ibdev->dev), &vaf);
+ } else {
+ printk(KERN_DEBUG "(NULL ib_device): %pV", &vaf);
+ }
+
+ va_end(args);
+}
+EXPORT_SYMBOL(__dynamic_ibdev_dbg);
+
+#endif
+
#define DDEBUG_STRING_SIZE 1024
static __initdata char ddebug_setup_string[DDEBUG_STRING_SIZE];
--
2.7.4
