To avoid having to ask libtraceevent to find a field by name when
handling each tracepoint event, we setup a struct syscall_tp with
a tp_field struct having an extractor function + the offset for the
"id", "args" and "ret" raw_syscalls:sys_{enter,exit} tracepoints.
Now that we want to do the same with syscalls:sys_{entry,exit}_NAME
individual syscall tracepoints, where we have "id" as "__syscall_nr" and
"args" as the actual series of per syscall parameters, we need more
flexibility from the routines that set up these pre-looked up syscall
tracepoint arg fields.
The next cset will use it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-v59q5e0jrlzkpl9a1c7t81ni@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
TP_UINT_FIELD__SWAPPED(32);
TP_UINT_FIELD__SWAPPED(64);
TP_UINT_FIELD__SWAPPED(32);
TP_UINT_FIELD__SWAPPED(64);
-static int tp_field__init_uint(struct tp_field *field,
- struct format_field *format_field,
- bool needs_swap)
+static int __tp_field__init_uint(struct tp_field *field, int size, int offset, bool needs_swap)
- field->offset = format_field->offset;
+ field->offset = offset;
- switch (format_field->size) {
case 1:
field->integer = tp_field__u8;
break;
case 1:
field->integer = tp_field__u8;
break;
+static int tp_field__init_uint(struct tp_field *field, struct format_field *format_field, bool needs_swap)
+{
+ return __tp_field__init_uint(field, format_field->size, format_field->offset, needs_swap);
+}
+
static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
{
return sample->raw_data + field->offset;
}
static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
{
return sample->raw_data + field->offset;
}
-static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
+static int __tp_field__init_ptr(struct tp_field *field, int offset)
- field->offset = format_field->offset;
+ field->offset = offset;
field->pointer = tp_field__ptr;
return 0;
}
field->pointer = tp_field__ptr;
return 0;
}
+static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
+{
+ return __tp_field__init_ptr(field, format_field->offset);
+}
+
struct syscall_tp {
struct tp_field id;
union {
struct syscall_tp {
struct tp_field id;
union {