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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2010-05-17 10:00:05 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-05-17 10:00:15 +0200
commit86f2552bbd0e17b19bb5e9881042533eaea553c7 (patch)
treef520909d953f5d8c7db3dd4c4f2582bd7f7473aa /arch/s390/include/asm/thread_info.h
parent[S390] virtualization aware cpu measurement (diff)
downloadlinux-86f2552bbd0e17b19bb5e9881042533eaea553c7.tar.xz
linux-86f2552bbd0e17b19bb5e9881042533eaea553c7.zip
[S390] add breaking event address for user space
Copy the last breaking event address from the lowcore to a new field in the thread_struct on each system entry. Add a new ptrace request PTRACE_GET_LAST_BREAK and a new utrace regset REGSET_LAST_BREAK to query the last breaking event. This is useful for debugging wild branches in user space code. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/thread_info.h')
-rw-r--r--arch/s390/include/asm/thread_info.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index 34f0873d6525..be3d3f91d86c 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -50,6 +50,7 @@ struct thread_info {
struct restart_block restart_block;
__u64 user_timer;
__u64 system_timer;
+ unsigned long last_break; /* last breaking-event-address. */
};
/*