[yocto] Fwd: preempt-rt for 4.14.71 fails to build

[Bruce Ashfield]

On 2018-10-10 2:18 PM, Dimitris Tassopoulos wrote:
> Hi all!
> 
> I've tried to build the latest preempt-rt kernel from the 
> `v4.14/standard/preempt-rt/base`
> and it fails to build. These are the hashes I've used:
> 

This should go to the linux-yocto list, since that's where
people interested in the linux-yocto kernel variants will
notice it.

In this case, there was a bad merge. If you check the
preempt-rt branches of 4.14 there's a fix queued, but I
haven't sent SRCREV updates yet.

Bruce

> ```
> LINUX_VERSION = "4.14.71"
> SRCREV_machine = "c37a14708f5b618602f84f83f902346e055824c3"
> SRCREV_meta = "1fb0b0379fb5883ce5af7485374e3f78ee4272d3"
> ```
> 
> And the errors I get are:
> ```
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c: 
> In function '__rt_mutex_lock':
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:2044:48: 
> error: passing argument 3 of 'rt_mutex_fastlock' from incompatible 
> pointer type [-Werror=incompatible-pointer-types]
>    rt_mutex_fastlock(lock, TASK_UNINTERRUPTIBLE, rt_mutex_slowlock);
>                                                  ^~~~~~~~~~~~~~~~~
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:1935:1: 
> note: expected 'struct ww_acquire_ctx *' but argument is of type 'int 
> (*)(struct rt_mutex *, int,  struct hrtimer_sleeper *, enum 
> rtmutex_chainwalk,  struct ww_acquire_ctx *)'
>   rt_mutex_fastlock(struct rt_mutex *lock, int state,
>   ^~~~~~~~~~~~~~~~~
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:2044:2: 
> error: too few arguments to function 'rt_mutex_fastlock'
>    rt_mutex_fastlock(lock, TASK_UNINTERRUPTIBLE, rt_mutex_slowlock);
>    ^~~~~~~~~~~~~~~~~
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:1935:1: 
> note: declared here
>   rt_mutex_fastlock(struct rt_mutex *lock, int state,
>   ^~~~~~~~~~~~~~~~~
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c: 
> In function 'rt_mutex_lock':
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:2069:2: 
> error: too many arguments to function 'rt_mutex_lock_state'
>    rt_mutex_lock_state(lock, TASK_UNINTERRUPTIBLE, 0);
>    ^~~~~~~~~~~~~~~~~~~
> /rnd/yocto/nativeos/build/tmp/work-shared/congatec/kernel-source/kernel/locking/rtmutex.c:2028:20: 
> note: declared here
>   static int __sched rt_mutex_lock_state(struct rt_mutex *lock, int state)
> ```
> 
> Is there any change that the latest rt44 patches are nor applied?
> 
> Thanks!
> Dimitris
> 
>