added recipients... On 08/21/12 07:30, Michael Thalmeier wrote: > Frank Rowand <frank.rowand <at> am.sony.com> writes: > >> >> >> Updates console-make-rt-friendly.patch >> >> #ifdef CONFIG_PREEMPT_RT_FULL, printk() output is never flushed by >> printk() because: >> ... >> >> On system boot some printk() output is flushed because register_console() >> and tty_open() call console_unlock(). >> >> This change also fixes the problem that was previously fixed by >> preempt-rt-allow-immediate-magic-sysrq-output-for-preempt_rt_full.patch >> >> Signed-off-by: Frank Rowand <frank.rowand <at> am.sony.com> >> >> --- >> kernel/printk.c | 2 1 + 1 - 0 ! >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> Index: b/kernel/printk.c >> =================================================================== >> --- a/kernel/printk.c >> +++ b/kernel/printk.c >> @@ -847,7 +847,7 @@ static int console_trylock_for_printk(un >> int retval = 0, wake = 0; >> #ifdef CONFIG_PREEMPT_RT_FULL >> int lock = !early_boot_irqs_disabled && !irqs_disabled_flags(flags) && >> - !preempt_count(); >> + (preempt_count() <= 1); >> #else >> int lock = 1; >> #endif >> >> > > I have seen that this patch is applied in the 3.4 stable rt series. > As we are using the 3.0 stable rt kernel I have tested this patch on this > kernel series (on a Freescale i.MX31 based board) and have not found any > problems so far. > Is there something I have missed why this patch has not found its way > in the 3.0 series ? > > Thanks in advance, > Michael -- To unsubscribe from this list: send the line "unsubscribe stable-rt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
