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-rw-r--r--tools/lib/perf/include/internal/lib.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/perf/include/internal/lib.h b/tools/lib/perf/include/internal/lib.h
index 5175d491b2d4..85471a4b900f 100644
--- a/tools/lib/perf/include/internal/lib.h
+++ b/tools/lib/perf/include/internal/lib.h
@@ -9,4 +9,6 @@ extern unsigned int page_size;
ssize_t readn(int fd, void *buf, size_t n);
ssize_t writen(int fd, const void *buf, size_t n);
+ssize_t preadn(int fd, void *buf, size_t n, off_t offs);
+
#endif /* __LIBPERF_INTERNAL_CPUMAP_H */