On Fri 2023-09-15 11:53:13, Greg KH wrote:
> On Fri, Sep 15, 2023 at 04:46:02PM +0800, Enlin Mu wrote:
> > John Ogness 于2023年9月15日周五 16:34写道：
> > >
> > > On 2023-09-15, Enlin Mu wrote:
> > > > Sometimes we want to print cpu id of printk() messages to consoles
> > > >
> > > > diff --git
> + return in_task() ? task_pid_nr(current) | (smp_processor_id() <<
> CPU_ID_SHIFT) :
There are contexts and CONFIG options around pre-emption where
smp_processor_id()
will throw a warning. Use raw_smp_processor_id().
-Tony
On Fri, Sep 15, 2023 at 04:46:02PM +0800, Enlin Mu wrote:
> John Ogness 于2023年9月15日周五 16:34写道：
> >
> > On 2023-09-15, Enlin Mu wrote:
> > > Sometimes we want to print cpu id of printk() messages to consoles
> > >
> > > diff --git a/include/linux/threads.h b/include/linux/threads.h
> > > index
On Fri, Sep 15, 2023 at 03:40:34PM +0800, Enlin Mu wrote:
> From: Enlin Mu
>
> Sometimes we want to print cpu id of printk() messages to consoles
This is rejected every few years. What has changes from the previous
times this was sent?
And why can't you use trace_printk()?
thanks,
greg k-h
John Ogness 于2023年9月15日周五 16:34写道：
>
> On 2023-09-15, Enlin Mu wrote:
> > Sometimes we want to print cpu id of printk() messages to consoles
> >
> > diff --git a/include/linux/threads.h b/include/linux/threads.h
> > index c34173e6c5f1..6700bd9a174f 100644
> > --- a/include/linux/threads.h
> >
On 2023-09-15, Enlin Mu wrote:
> Sometimes we want to print cpu id of printk() messages to consoles
>
> diff --git a/include/linux/threads.h b/include/linux/threads.h
> index c34173e6c5f1..6700bd9a174f 100644
> --- a/include/linux/threads.h
> +++ b/include/linux/threads.h
> @@ -34,6 +34,9 @@
>
From: Enlin Mu
Sometimes we want to print cpu id of printk() messages to consoles
Signed-off-by: Enlin Mu
---
include/linux/threads.h | 3 +++
kernel/printk/printk.c | 18 +-
2 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/include/linux/threads.h
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