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| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2009-03-24 13:38:06 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-24 16:43:12 +0100 |
| commit | ee000b7f9fe429d2470c674ccec8d344f6789e0d (patch) | |
| tree | 35b480a5e5fb90d5a414d942bcb541e7887334d6 /include | |
| parent | cc59c9e8d0165c632fd056c4a23e36f917507fb4 (diff) | |
| download | lwn-ee000b7f9fe429d2470c674ccec8d344f6789e0d.tar.gz lwn-ee000b7f9fe429d2470c674ccec8d344f6789e0d.zip | |
tracing: use union for multi-usages field
Impact: cleanup
struct dyn_ftrace::ip has different usages in his lifecycle,
we use union for it. And also for struct dyn_ftrace::flags.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <49C871BE.3080405@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ftrace.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 1141248c84ee..015a3d22cf74 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -145,9 +145,15 @@ enum { }; struct dyn_ftrace { - unsigned long ip; /* address of mcount call-site */ - unsigned long flags; - struct dyn_arch_ftrace arch; + union { + unsigned long ip; /* address of mcount call-site */ + struct dyn_ftrace *freelist; + }; + union { + unsigned long flags; + struct dyn_ftrace *newlist; + }; + struct dyn_arch_ftrace arch; }; int ftrace_force_update(void); |