libperf: Add missing 'struct xyarray' forward declaration

We were getting it by luck, from files included before internal/evsel.h
where it is being included.

Fixes: 9dfcb7599084 ("libperf: Move fd array from perf's evsel to lobperf's perf_evsel class")
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lkml.kernel.org/n/tip-r8ukhxprpkflbd2k9vcc42v1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/lib/include/internal/evsel.h b/tools/perf/lib/include/internal/evsel.h
index 1bff789b09230933aafe7c9210ac0721e2ef7328..60daee6db914c09f487285b0e47d84d7e0020532 100644 (file)
--- a/tools/perf/lib/include/internal/evsel.h
+++ b/tools/perf/lib/include/internal/evsel.h
@@ -8,6 +8,7 @@
 
 struct perf_cpu_map;
 struct perf_thread_map;
+struct xyarray;
 
 struct perf_evsel {
        struct list_head         node;