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Merge pull request #7361 from dcantah/epoll-ev-rm

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This commit is contained in:
Fu Wei
2022-09-06 07:36:29 +08:00
committed by GitHub
parent f3086f3f94 3a2197f5fe
commit 50a201b6c2
1 changed files with 8 additions and 6 deletions
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14
metrics/cgroups/v1/oom.go
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@@ -121,14 +121,14 @@ func (o *oomCollector) start() {
return
}
for i := 0; i < n; i++ {
o.process(uintptr(events[i].Fd), events[i].Events)
o.process(uintptr(events[i].Fd))
}
}
}
func (o *oomCollector) process(fd uintptr, event uint32) {
// make sure to always flush the fd
flush(fd)
func (o *oomCollector) process(fd uintptr) {
// make sure to always flush the eventfd
flushEventfd(fd)
o.mu.Lock()
info, ok := o.set[fd]
@@ -152,8 +152,10 @@ func (o *oomCollector) process(fd uintptr, event uint32) {
}
}
func flush(fd uintptr) error {
func flushEventfd(efd uintptr) error {
// Buffer must be >= 8 bytes for eventfd reads
// https://man7.org/linux/man-pages/man2/eventfd.2.html
var buf [8]byte
_, err := unix.Read(int(fd), buf[:])
_, err := unix.Read(int(efd), buf[:])
return err
}