On Mon, Jul 29, 2019 at 11:57 PM Valdis Klētnieks
wrote:
>
> On Mon, 29 Jul 2019 22:48:57 +0530, Muni Sekhar said:
> > Let us assume that multiple processes are waiting on wait_event()\
> > wait_event_interruptible()\ wait_event_interruptible_timeout(), which
> > process gets woken up on calling w
On Mon, 29 Jul 2019 23:37:34 +0530, Muni Sekhar said:
> On Mon, Jul 29, 2019 at 11:31 PM Bharath Vedartham
> wrote:
> > Sorry to spoil the fun here. But check out what the queue data structure
> > is all about. 'wait_queue' :)
> A wait queue is a doubly linked list of wait_queue_t structures that
On Mon, 29 Jul 2019 22:48:57 +0530, Muni Sekhar said:
> Let us assume that multiple processes are waiting on wait_event()\
> wait_event_interruptible()\ wait_event_interruptible_timeout(), which
> process gets woken up on calling wake_up()??
>
> I presume wake_up() picks one process, but is there a
On Mon, Jul 29, 2019 at 11:31 PM Bharath Vedartham wrote:
>
> On Mon, Jul 29, 2019 at 10:48:57PM +0530, Muni Sekhar wrote:
> > Hi All,
> >
> > Let us assume that multiple processes are waiting on wait_event()\
> > wait_event_interruptible()\ wait_event_interruptible_timeout(), which
> > process ge
On Mon, Jul 29, 2019 at 10:48:57PM +0530, Muni Sekhar wrote:
> Hi All,
>
> Let us assume that multiple processes are waiting on wait_event()\
> wait_event_interruptible()\ wait_event_interruptible_timeout(), which
> process gets woken up on calling wake_up()??
>
> I presume wake_up() picks one pr
Hi All,
I used the Linux kernel’s ‘Ftrace’ framework for tracing the interrupt
latencies.
Sometimes I noticed a delay(time between do_IRQ() to start of ISR())
in start of ISR(interrupt service routine) to execute , some other
times I noticed ISR execution time(entering and exiting a function) is
On Mon, Jul 29, 2019 at 10:48:57PM +0530, Muni Sekhar wrote:
> Hi All,
>
> Let us assume that multiple processes are waiting on wait_event()\
> wait_event_interruptible()\ wait_event_interruptible_timeout(), which
> process gets woken up on calling wake_up()??
>
> I presume wake_up() picks one pr
Hi All,
Let us assume that multiple processes are waiting on wait_event()\
wait_event_interruptible()\ wait_event_interruptible_timeout(), which
process gets woken up on calling wake_up()??
I presume wake_up() picks one process, but is there any algorithm to
pick which process?
--
Thanks,
Sekh
On Sun, 28 Jul 2019, Valdis Klētnieks wrote:
> On Sun, 28 Jul 2019 15:39:26 -0400, "Robert P. J. Day" said:
>
> > no point bugging the actual cgroup people about this since it
> > should be simple ... if i need *only* cgroup v2, can i dispense
> > entirely with everything under /sys/fs/cgroup/ o
Hi guys,
So I'm working on a driver and on dt parsing i need to get a reference
to device_node using of_parse_phandle. I was trying to see if there is
any equivalent on the fwnode_* api's and i could find nothing...
I use
device_for_each_child_node(dev, child) {
...
}
and then some of
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