[Bug 252820] Linuxulator: linux_timerfd_settime don't set expirations count to zero

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252820

            Bug ID: 252820
           Summary: Linuxulator: linux_timerfd_settime don't set
                    expirations count to zero
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: ankohuu at outlook.com
 Attachment #221726 text/plain
         mime type:

Created attachment 221726
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=221726&action=edit
timerfd+epoll+LT

On Linux, read(2) timerfd returns an unsigned 8-byte integer (uint64_t)
containing the number of expirations that have occurred, if the timer has
already expired one or more times since its settings were last modified using
timerfd_settime(), or since the last successful read(2).That's to say, once do
a read or timerfd_settime operation, timer fd's expiration count should be
zero.
Some Linux applications create timerfd and add it to epoll with LT mode, when
event comes, they do timerfd_settime instead of read to stop event source from
trigger, code in the attachment, On FreeBSD timerfd_settime don't set count to
zero, so cause CPU high.

-- 
You are receiving this mail because:
You are the assignee for the bug.