perf trace beauty eventfd: No need to include eventfd.h

Old systems such as RHEL5 lack this file, and what we need is
already under ifdefs, so just ditch this #include.

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: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-dzbjfllw6znuoy37skwnwa4r@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
上级 a41af25b
#include <sys/eventfd.h>
#ifndef EFD_SEMAPHORE
#define EFD_SEMAPHORE 1
#endif
......
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