Hi Peter,
On 10/14/19 3:58 PM, Peter Zijlstra wrote:
On Mon, Oct 14, 2019 at 02:59:11PM +0200, Peter Zijlstra wrote:
On Sat, Oct 12, 2019 at 07:49:55AM +0200, Manfred Spraul wrote:
for (;;) {
+ /* memory barrier not required, we hold info->lock */
__set_c
On Mon, Oct 14, 2019 at 02:59:11PM +0200, Peter Zijlstra wrote:
> On Sat, Oct 12, 2019 at 07:49:55AM +0200, Manfred Spraul wrote:
>
> > for (;;) {
> > + /* memory barrier not required, we hold info->lock */
> > __set_current_state(TASK_INTERRUPTIBLE);
> >
> >
On Sat, Oct 12, 2019 at 07:49:55AM +0200, Manfred Spraul wrote:
> for (;;) {
> + /* memory barrier not required, we hold info->lock */
> __set_current_state(TASK_INTERRUPTIBLE);
>
> spin_unlock(&info->lock);
> time = schedule_hrtimeout_
On Sat, 12 Oct 2019, Manfred Spraul wrote:
Update and document memory barriers for mqueue.c:
- ewp->state is read without any locks, thus READ_ONCE is required.
- add smp_aquire__after_ctrl_dep() after the READ_ONCE, we need
acquire semantics if the value is STATE_READY.
- add an explicit mem
Update and document memory barriers for mqueue.c:
- ewp->state is read without any locks, thus READ_ONCE is required.
- add smp_aquire__after_ctrl_dep() after the READ_ONCE, we need
acquire semantics if the value is STATE_READY.
- add an explicit memory barrier to __pipelined_op(), the
refcou
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