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| author | Changbin Du <changbin.du@gmail.com> | 2020-01-12 06:42:31 +0300 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-01-14 23:55:57 +0300 |
| commit | d0695e2351102affd8efae83989056bc4b275917 (patch) | |
| tree | 986f3e7ab653d857c92b92cb7d1e3f7ed63a8206 | |
| parent | b3a987b0264d3ddbb24293ebff10eddfc472f653 (diff) | |
| download | linux-d0695e2351102affd8efae83989056bc4b275917.tar.xz | |
tracing: xen: Ordered comparison of function pointers
Just as commit 0566e40ce7 ("tracing: initcall: Ordered comparison of
function pointers"), this patch fixes another remaining one in xen.h
found by clang-9.
In file included from arch/x86/xen/trace.c:21:
In file included from ./include/trace/events/xen.h:475:
In file included from ./include/trace/define_trace.h:102:
In file included from ./include/trace/trace_events.h:473:
./include/trace/events/xen.h:69:7: warning: ordered comparison of function \
pointers ('xen_mc_callback_fn_t' (aka 'void (*)(void *)') and 'xen_mc_callback_fn_t') [-Wordered-compare-function-pointers]
__field(xen_mc_callback_fn_t, fn)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/trace/trace_events.h:421:29: note: expanded from macro '__field'
^
./include/trace/trace_events.h:407:6: note: expanded from macro '__field_ext'
is_signed_type(type), filter_type); \
^
./include/linux/trace_events.h:554:44: note: expanded from macro 'is_signed_type'
^
Fixes: c796f213a6934 ("xen/trace: add multicall tracing")
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
| -rw-r--r-- | include/trace/events/xen.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h index 9a0e8af21310..a5ccfa67bc5c 100644 --- a/include/trace/events/xen.h +++ b/include/trace/events/xen.h @@ -66,7 +66,11 @@ TRACE_EVENT(xen_mc_callback, TP_PROTO(xen_mc_callback_fn_t fn, void *data), TP_ARGS(fn, data), TP_STRUCT__entry( - __field(xen_mc_callback_fn_t, fn) + /* + * Use field_struct to avoid is_signed_type() + * comparison of a function pointer. + */ + __field_struct(xen_mc_callback_fn_t, fn) __field(void *, data) ), TP_fast_assign( |