On Mon, Sep 19, 2022 at 12:00:12PM +0200, Peter Zijlstra wrote:
> CONFIG_GENERIC_ENTRY disallows any and all tracing when RCU isn't
> enabled.
>
> XXX if s390 (the only other GENERIC_ENTRY user as of this writing)
> isn't comfortable with this, we could switch to
> HAVE_NOINSTR_VALIDATION which is
On Mon, 19 Sept 2022 at 12:18, Peter Zijlstra wrote:
>
> Hi All!
>
> At long last, a respin of the cpuidle vs rcu cleanup patches.
>
> v1: https://lkml.kernel.org/r/20220608142723.103523...@infradead.org
>
> These here patches clean up the mess that is cpuidle vs rcuidle.
>
> At the end of the rid
On Tue, 4 Oct 2022 at 13:03, Ulf Hansson wrote:
>
> On Mon, 19 Sept 2022 at 12:18, Peter Zijlstra wrote:
> >
> > Doing RCU-idle outside the driver, only to then temporarily enable it
> > again before going idle is daft.
> >
> > Notably: this converts all dt_init_idle_driver() and
> > __CPU_PM_CPU
On Mon, 19 Sept 2022 at 12:17, Peter Zijlstra wrote:
>
> OMAP was the one and only user.
>
> Signed-off-by: Peter Zijlstra (Intel)
There are changes to the runtime PM core as part of $subject patch.
Perhaps move those parts into a separate patch? In any case, the code
looks good to me.
Reviewed
On Mon, 19 Sept 2022 at 12:17, Peter Zijlstra wrote:
>
> OMAP was the one and only user.
OMAP? :-)
>
> Signed-off-by: Peter Zijlstra (Intel)
Reviewed-by: Ulf Hansson
Kind regards
Uffe
> ---
> drivers/clk/clk.c |8
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> --- a/dri
On Mon, 19 Sept 2022 at 12:18, Peter Zijlstra wrote:
>
> None of these functions should ever be ran with RCU disabled anymore.
>
> Specifically, do_handle_IPI() is only called from handle_IPI() which
> explicitly does irq_enter()/irq_exit() which ensures RCU is watching.
>
> The problem with smp_c
On Mon, 19 Sept 2022 at 12:17, Peter Zijlstra wrote:
>
> All callers should still have RCU enabled.
>
> Signed-off-by: Peter Zijlstra (Intel)
> Acked-by: Mark Rutland
Reviewed-by: Ulf Hansson
Kind regards
Uffe
> ---
> kernel/cpu_pm.c |9 -
> 1 file changed, 9 deletions(-)
>
> --
On Mon, 19 Sept 2022 at 12:18, Peter Zijlstra wrote:
>
> Doing RCU-idle outside the driver, only to then temporarily enable it
> again before going idle is daft.
>
> Notably: this converts all dt_init_idle_driver() and
> __CPU_PM_CPU_IDLE_ENTER() users for they are inextrably intertwined.
>
> Sign
