linux-kernel - Re: [ANNOUNCE] v5.10-rc5-rt11

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Date:   Sat, 28 Nov 2020 15:36:51 +0100
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v5.10-rc5-rt11

Hi.

On Fri, Nov 27, 2020 at 05:59:57PM +0100, Sebastian Andrzej Siewior wrote:
> Dear RT folks!
> 
> I'm pleased to announce the v5.10-rc5-rt11 patch set. 
> 
> Changes since v5.10-rc5-rt10:
> 
>   - The workaround for the IMX clock driver failure has been replaced
>     with a another patch which was proposed upstream.
> 
>   - Tweak the rtmutex patches to build a allnoconfig with RT enabled.
> 
> Known issues
>      - It has been pointed out that due to changes to the printk code the
>        internal buffer representation changed. This is only an issue if tools
>        like `crash' are used to extract the printk buffer from a kernel memory
>        image.
> 
> The delta patch against v5.10-rc5-rt10 is appended below and can be found here:
>  
>      https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.10/incr/patch-5.10-rc5-rt10-rt11.patch.xz
> 
> You can get this release via the git tree at:
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v5.10-rc5-rt11

It seems that the v5.10-rc5-rt11 tag was not pushed:

```
$ git fetch rt-devel --tags

$ git tag | grep v5.10-rc5-rt11
v5.10-rc5-rt11-patches
v5.10-rc5-rt11-rebase

$ git tag | grep v5.10-rc5-rt10
v5.10-rc5-rt10
v5.10-rc5-rt10-patches
v5.10-rc5-rt10-rebase
```

> 
> The RT patch against v5.10-rc5 can be found here:
> 
>     https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patch-5.10-rc5-rt11.patch.xz
> 
> The split quilt queue is available at:
> 
>     https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10-rc5-rt11.tar.xz
> 
> Sebastian
> diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig
> index 3b393cb072951..dbacdd70af2e1 100644
> --- a/drivers/clk/imx/Kconfig
> +++ b/drivers/clk/imx/Kconfig
> @@ -5,7 +5,7 @@ config MXC_CLK
>  	depends on ARCH_MXC || COMPILE_TEST
>  
>  config MXC_CLK_SCU
> -	tristate "IMX SCU clock"
> +	tristate
>  	depends on ARCH_MXC || COMPILE_TEST
>  	depends on IMX_SCU && HAVE_ARM_SMCCC
>  
> diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> index b8bf9460c91d7..dd6a737d060b4 100644
> --- a/drivers/clk/imx/Makefile
> +++ b/drivers/clk/imx/Makefile
> @@ -26,9 +26,9 @@ obj-$(CONFIG_CLK_IMX8MN) += clk-imx8mn.o
>  obj-$(CONFIG_CLK_IMX8MP) += clk-imx8mp.o
>  obj-$(CONFIG_CLK_IMX8MQ) += clk-imx8mq.o
>  
> -obj-$(CONFIG_MXC_CLK_SCU)	+= clk-imx-scu.o
> -clk-imx-scu-y			:= clk-scu.o clk-lpcg-scu.o
> -obj-$(CONFIG_CLK_IMX8QXP)	+= clk-imx8qxp.o clk-imx8qxp-lpcg.o
> +obj-$(CONFIG_MXC_CLK_SCU) += clk-imx-scu.o clk-imx-lpcg-scu.o
> +clk-imx-scu-$(CONFIG_CLK_IMX8QXP) += clk-scu.o clk-imx8qxp.o
> +clk-imx-lpcg-scu-$(CONFIG_CLK_IMX8QXP) += clk-lpcg-scu.o clk-imx8qxp-lpcg.o
>  
>  obj-$(CONFIG_CLK_IMX1)   += clk-imx1.o
>  obj-$(CONFIG_CLK_IMX25)  += clk-imx25.o
> diff --git a/drivers/clk/imx/clk-lpcg-scu.c b/drivers/clk/imx/clk-lpcg-scu.c
> index 336dce43da82d..1f0e44f921aee 100644
> --- a/drivers/clk/imx/clk-lpcg-scu.c
> +++ b/drivers/clk/imx/clk-lpcg-scu.c
> @@ -115,4 +115,3 @@ struct clk_hw *imx_clk_lpcg_scu(const char *name, const char *parent_name,
>  
>  	return hw;
>  }
> -EXPORT_SYMBOL_GPL(imx_clk_lpcg_scu);
> diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
> index 026a33606ae53..b8b2072742a56 100644
> --- a/drivers/clk/imx/clk-scu.c
> +++ b/drivers/clk/imx/clk-scu.c
> @@ -9,7 +9,6 @@
>  #include <linux/clk-provider.h>
>  #include <linux/err.h>
>  #include <linux/slab.h>
> -#include <linux/module.h>
>  
>  #include "clk-scu.h"
>  
> @@ -133,7 +132,6 @@ int imx_clk_scu_init(void)
>  {
>  	return imx_scu_get_handle(&ccm_ipc_handle);
>  }
> -EXPORT_SYMBOL_GPL(imx_clk_scu_init);
>  
>  /*
>   * clk_scu_recalc_rate - Get clock rate for a SCU clock
> @@ -389,5 +387,3 @@ struct clk_hw *__imx_clk_scu(const char *name, const char * const *parents,
>  
>  	return hw;
>  }
> -EXPORT_SYMBOL_GPL(__imx_clk_scu);
> -MODULE_LICENSE("GPL");
> diff --git a/include/linux/spinlock_types_up.h b/include/linux/spinlock_types_up.h
> index b0243ba07fb78..d9b371fa13e09 100644
> --- a/include/linux/spinlock_types_up.h
> +++ b/include/linux/spinlock_types_up.h
> @@ -1,6 +1,10 @@
>  #ifndef __LINUX_SPINLOCK_TYPES_UP_H
>  #define __LINUX_SPINLOCK_TYPES_UP_H
>  
> +#if !defined(__LINUX_SPINLOCK_TYPES_H) && !defined(__LINUX_RT_MUTEX_H)
> +# error "please don't include this file directly"
> +#endif
> +
>  /*
>   * include/linux/spinlock_types_up.h - spinlock type definitions for UP
>   *
> diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
> index c1203c14fee92..b5cd1e278eb58 100644
> --- a/kernel/Kconfig.preempt
> +++ b/kernel/Kconfig.preempt
> @@ -65,6 +65,7 @@ config PREEMPT_RT
>  	bool "Fully Preemptible Kernel (Real-Time)"
>  	depends on EXPERT && ARCH_SUPPORTS_RT
>  	select PREEMPTION
> +	select RT_MUTEXES
>  	help
>  	  This option turns the kernel into a real-time kernel by replacing
>  	  various locking primitives (spinlocks, rwlocks, etc.) with
> diff --git a/localversion-rt b/localversion-rt
> index d79dde624aaac..05c35cb580779 100644
> --- a/localversion-rt
> +++ b/localversion-rt
> @@ -1 +1 @@
> --rt10
> +-rt11

-- 
  Oleksandr Natalenko (post-factum)