perf_counter: Add forward/backward attribute ABI compatibility

[mirror_ubuntu-eoan-kernel.git] / tools / perf / perf.h

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index af0a5046d743a22b718b0360b392cc4107fdc6ef..87a1aca4a4246e0dad3ea82276ccd5487cddacf0 100644 (file)
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -53,11 +53,12 @@ static inline unsigned long long rdclock(void)
        _min1 < _min2 ? _min1 : _min2; })
 
 static inline int
-sys_perf_counter_open(struct perf_counter_attr *attr_uptr,
+sys_perf_counter_open(struct perf_counter_attr *attr,
                      pid_t pid, int cpu, int group_fd,
                      unsigned long flags)
 {
-       return syscall(__NR_perf_counter_open, attr_uptr, pid, cpu,
+       attr->size = sizeof(*attr);
+       return syscall(__NR_perf_counter_open, attr, pid, cpu,
                       group_fd, flags);
 }