lttng-modules: fix build against mips and v5.19 kernel

lttng-modules: fix build against mips and v5.19 kernel

When building against a v5.19 mips kernel, the following errors
were triggered:

  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:105:42: note: expected 'struct compact_control *' but argument is of type 'struct compact_control *'
  |   105 |         TP_PROTO(struct compact_control *cc,
  |       |                  ~~~~~~~~~~~~~~~~~~~~~~~~^~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:779:68: note: in definition of macro 'LTTNG_TRACEPOINT_EVENT_CLASS_CODE'
  |   779 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto)    \
  |       |                                                                    ^~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:106:50: note: in expansion of macro 'PARAMS'
  |   106 |         LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \
  |       |                                                  ^~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:41:9: note: in expansion of macro 'LTTNG_TRACEPOINT_EVENT_CLASS'
  |    41 |         LTTNG_TRACEPOINT_EVENT_CLASS(map,                               \
  |       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:42:30: note: in expansion of macro 'PARAMS'
  |    42 |                              PARAMS(proto),                             \
  |       |                              ^~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:101:1: note: in expansion of macro 'LTTNG_TRACEPOINT_EVENT_MAP'
  |   101 | LTTNG_TRACEPOINT_EVENT_MAP(mm_compaction_migratepages,
  |       | ^~~~~~~~~~~~~~~~~~~~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:105:9: note: in expansion of macro 'TP_PROTO'
  |   105 |         TP_PROTO(struct compact_control *cc,
  |       |         ^~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:112:57: error: invalid use of undefined type 'struct compact_control'

...

  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:108:25: warning: 'struct compact_control' declared inside parameter list will not be visible outside of this definition or declaration
  |   108 |         TP_PROTO(struct compact_control *cc,
  |       |                         ^~~~~~~~~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:159:43: note: in definition of macro 'LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP'
  |   159 | void __event_template_proto___##_template(_proto);
  |       |                                           ^~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:45:61: note: in expansion of macro 'PARAMS'
  |    45 |         LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args))
  |       |                                                             ^~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:104:1: note: in expansion of macro 'LTTNG_TRACEPOINT_EVENT_MAP'
  |   104 | LTTNG_TRACEPOINT_EVENT_MAP(mm_compaction_migratepages,
  |       | ^~~~~~~~~~~~~~~~~~~~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/instrumentation/events/compaction.h:108:9: note: in expansion of macro 'TP_PROTO'
  |   108 |         TP_PROTO(struct compact_control *cc,
  |       |         ^~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:159:6: error: conflicting types for '__event_template_proto___compaction_migratepages'; have 'void(struct compact_control *, unsigned int)'
  |   159 | void __event_template_proto___##_template(_proto);
  |       |      ^~~~~~~~~~~~~~~~~~~~~~~~~
  | lttng-modules-2.13.4/src/probes/../../include/lttng/tracepoint-event-impl.h:45:9: note: in expansion of macro 'LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP'
  |    45 |         LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args))
  |       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The root cause appears to be that this particular mips kernel does not
have CONFIG_COMPACTION avaiable, and hence we end up with the struct
declaration within this tracepoint, and then conflicting types.

While putting the conditional around only compaction_migratepages seemed
sufficient to get the build working, it doesn't look like any of the
tracepoints should be valid, so we extend it to all definitions.

Upstream-Status: Submitted [https://lists.lttng.org/pipermail/lttng-dev/2022-August/030246.html]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>