Module: xenomai-jki
Branch: for-forge
Commit: 2f31985139fcec026e178abd13c688cf6d3dea47
URL:
http://git.xenomai.org/?p=xenomai-jki.git;a=commit;h=2f31985139fcec026e178abd13c688cf6d3dea47
Author: Jan Kiszka <jan.kis...@siemens.com>
Date: Wed Jul 29 17:30:47 2015 +0200
kernel/cobalt: Add reason to gorelax trace point
Trace and print the name of the relaxation reason whenever available.
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
kernel/cobalt/thread.c | 2 +-
kernel/cobalt/trace/cobalt-core.h | 26 +++++++++++++++++++++++---
2 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/kernel/cobalt/thread.c b/kernel/cobalt/thread.c
index 4cec6e7..2d1f840 100644
--- a/kernel/cobalt/thread.c
+++ b/kernel/cobalt/thread.c
@@ -1997,7 +1997,7 @@ void xnthread_relax(int notify, int reason)
* domain to the Linux domain. This will cause the Linux task
* to resume using the register state of the shadow thread.
*/
- trace_cobalt_shadow_gorelax(thread);
+ trace_cobalt_shadow_gorelax(thread, reason);
/*
* If you intend to change the following interrupt-free
diff --git a/kernel/cobalt/trace/cobalt-core.h
b/kernel/cobalt/trace/cobalt-core.h
index ee20b7c..d2b1c7e 100644
--- a/kernel/cobalt/trace/cobalt-core.h
+++ b/kernel/cobalt/trace/cobalt-core.h
@@ -357,9 +357,29 @@ DEFINE_EVENT(thread_event, cobalt_shadow_hardened,
TP_ARGS(thread)
);
-DEFINE_EVENT(thread_event, cobalt_shadow_gorelax,
- TP_PROTO(struct xnthread *thread),
- TP_ARGS(thread)
+#define cobalt_print_relax_reason(reason) \
+ __print_symbolic(reason, \
+ { SIGDEBUG_UNDEFINED, "undefined" }, \
+ { SIGDEBUG_MIGRATE_SIGNAL, "signal" }, \
+ { SIGDEBUG_MIGRATE_SYSCALL, "syscall" }, \
+ { SIGDEBUG_MIGRATE_FAULT, "fault" })
+
+TRACE_EVENT(cobalt_shadow_gorelax,
+ TP_PROTO(struct xnthread *thread, int reason),
+ TP_ARGS(thread, reason),
+
+ TP_STRUCT__entry(
+ __field(struct xnthread *, thread)
+ __field(int, reason)
+ ),
+
+ TP_fast_assign(
+ __entry->thread = thread;
+ __entry->reason = reason;
+ ),
+
+ TP_printk("thread=%p reason=%s",
+ __entry->thread, cobalt_print_relax_reason(__entry->reason))
);
DEFINE_EVENT(thread_event, cobalt_shadow_relaxed,
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