Hi,
compaction trace points seem to be broken without CONFIG_COMPACTION
enabled after
mm-compaction-more-trace-to-understand-when-why-compaction-start-finish.patch.
My config is
# CONFIG_COMPACTION is not set
CONFIG_CMA=y
which might be a bit unusual but I am getting
CC mm/compaction.o
In file included from include/trace/define_trace.h:90:0,
from include/trace/events/compaction.h:298,
from mm/compaction.c:49:
include/trace/events/compaction.h: In function
‘ftrace_raw_output_mm_compaction_end’:
include/trace/events/compaction.h:164:3: error: ‘compaction_status_string’
undeclared (first use in this function)
compaction_status_string[__entry->status])
^
[...]
include/trace/events/compaction.h: In function
‘ftrace_raw_output_mm_compaction_suitable_template’:
include/trace/events/compaction.h:220:3: error: ‘compaction_status_string’
undeclared (first use in this function)
compaction_status_string[__entry->ret])
[...]
scripts/Makefile.build:257: recipe for target 'mm/compaction.o' failed
make[1]: *** [mm/compaction.o] Error 1
Makefile:1528: recipe for target 'mm/compaction.o' failed
make: *** [mm/compaction.o] Error 2
Moving compaction_status_string outside of CONFIG_COMPACTION doesn't
help much because of other failures:
include/trace/events/compaction.h:261:30: error: ‘struct zone’ has no member
named ‘compact_defer_shift’
__entry->defer_shift = zone->compact_defer_shift;
So I guess the tracepoint need a better fix.
--
Michal Hocko
SUSE Labs
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