linux-kernel - Re: [PATCH 3/3] ARM: omap2: move platform-specific asm-offset.h to arch/arm/mach-omap2

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Message-ID: <20190408161802.GI49658@atomide.com>
Date:   Mon, 8 Apr 2019 09:18:02 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     arm@...nel.org, Olof Johansson <olof@...om.net>,
        Arnd Bergmann <arnd@...db.de>,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        Russell King <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org, Keerthy <j-keerthy@...com>,
        Dave Gerlach <d-gerlach@...com>
Subject: Re: [PATCH 3/3] ARM: omap2: move platform-specific asm-offset.h to
 arch/arm/mach-omap2

Hi,

* Masahiro Yamada <yamada.masahiro@...ionext.com> [190408 07:56]:
> <generated/ti-pm-asm-offsets.h> is only generated and included
> by arch/arm/mach-omap2/, so it does not need to reside in the
> globally visible include/generated/.
> 
> I moved and renamed it to arch/arm/mach-omap2/pm-asm-offsets.h
> since the prefix 'omap2-' is just redundant in mach-omap2/.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
> 
> Can this be applied to ARM-SOC tree in a series?
> (with Ack from the platform sub-maintainer.)
> 
> ti-pm-asm-offsets.h does not need to reside in include/generated/,
> but you may ask "Why must it get out of include/generated/?"
> 
> My main motivation is to avoid a race condition in the currently
> proposed patch:
> 
> https://lore.kernel.org/patchwork/patch/1052763/
> 
> This patch tries to embed some build artifacts into the kernel.
> 
> If arch/arm/mach-omap2/ and kernel/ are built at the same time,
> it may embed a truncated file.

Looks like a nice improvment to me, adding Keerthy and Dave to Cc.

Keerthy and Dave, can you please test this series with am3 and am4
PM code?

Regards,

Tony

>  arch/arm/mach-omap2/.gitignore  | 1 +
>  arch/arm/mach-omap2/Makefile    | 5 +++--
>  arch/arm/mach-omap2/sleep33xx.S | 2 +-
>  arch/arm/mach-omap2/sleep43xx.S | 2 +-
>  4 files changed, 6 insertions(+), 4 deletions(-)
>  create mode 100644 arch/arm/mach-omap2/.gitignore
> 
> diff --git a/arch/arm/mach-omap2/.gitignore b/arch/arm/mach-omap2/.gitignore
> new file mode 100644
> index 000000000000..79a8d6ea7152
> --- /dev/null
> +++ b/arch/arm/mach-omap2/.gitignore
> @@ -0,0 +1 @@
> +pm-asm-offsets.h
> diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
> index 85d1b13c9215..26baeb6477af 100644
> --- a/arch/arm/mach-omap2/Makefile
> +++ b/arch/arm/mach-omap2/Makefile
> @@ -236,9 +236,10 @@ obj-y					+= omap_phy_internal.o
>  
>  obj-$(CONFIG_MACH_OMAP2_TUSB6010)	+= usb-tusb6010.o
>  
> -include/generated/ti-pm-asm-offsets.h: arch/arm/mach-omap2/pm-asm-offsets.s FORCE
> +$(obj)/pm-asm-offsets.h: $(obj)/pm-asm-offsets.s FORCE
>  	$(call filechk,offsets,__TI_PM_ASM_OFFSETS_H__)
>  
> -$(obj)/sleep33xx.o $(obj)/sleep43xx.o: include/generated/ti-pm-asm-offsets.h
> +$(obj)/sleep33xx.o $(obj)/sleep43xx.o: $(obj)/pm-asm-offsets.h
>  
>  targets += pm-asm-offsets.s
> +clean-files += pm-asm-offsets.h
> diff --git a/arch/arm/mach-omap2/sleep33xx.S b/arch/arm/mach-omap2/sleep33xx.S
> index 47a816468cdb..a003769121aa 100644
> --- a/arch/arm/mach-omap2/sleep33xx.S
> +++ b/arch/arm/mach-omap2/sleep33xx.S
> @@ -6,7 +6,6 @@
>   *	Dave Gerlach, Vaibhav Bedia
>   */
>  
> -#include <generated/ti-pm-asm-offsets.h>
>  #include <linux/linkage.h>
>  #include <linux/platform_data/pm33xx.h>
>  #include <linux/ti-emif-sram.h>
> @@ -15,6 +14,7 @@
>  
>  #include "iomap.h"
>  #include "cm33xx.h"
> +#include "pm-asm-offsets.h"
>  
>  #define AM33XX_CM_CLKCTRL_MODULESTATE_DISABLED			0x00030000
>  #define AM33XX_CM_CLKCTRL_MODULEMODE_DISABLE			0x0003
> diff --git a/arch/arm/mach-omap2/sleep43xx.S b/arch/arm/mach-omap2/sleep43xx.S
> index 5b9343b58fc7..aa288f361c5e 100644
> --- a/arch/arm/mach-omap2/sleep43xx.S
> +++ b/arch/arm/mach-omap2/sleep43xx.S
> @@ -6,7 +6,6 @@
>   *	Dave Gerlach, Vaibhav Bedia
>   */
>  
> -#include <generated/ti-pm-asm-offsets.h>
>  #include <linux/linkage.h>
>  #include <linux/ti-emif-sram.h>
>  #include <linux/platform_data/pm33xx.h>
> @@ -19,6 +18,7 @@
>  #include "iomap.h"
>  #include "omap-secure.h"
>  #include "omap44xx.h"
> +#include "pm-asm-offsets.h"
>  #include "prm33xx.h"
>  #include "prcm43xx.h"
>  
> -- 
> 2.17.1
>