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From: Antony Pavlov <antonynpavlov@gmail.com>
To: Markus Pargmann <mpa@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 9/9] fs: Add pstore filesystem
Date: Wed, 2 Dec 2015 21:37:13 +0300	[thread overview]
Message-ID: <20151202213713.5023ecefad709dc2d3e260a7@gmail.com> (raw)
In-Reply-To: <1449064131-12659-10-git-send-email-mpa@pengutronix.de>

On Wed,  2 Dec 2015 14:48:51 +0100
Markus Pargmann <mpa@pengutronix.de> wrote:

> pstore is a persistent storage filesystem used for RAMOOPS. It is used
> to store console logs, panics, ftrace and other information in case of a
> crash/panic/oops/reboot.
> 
> pstore is implemented for barebox as a read-only filesystem at the
> moment. It may be extended later on. The idea is to provide a way to
> extract essential data from the last running kernel.
> 
> Most of the code is copied from the kernel. However this is only a
> lightweight implementation without real write support yet.
> 
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> ---
>  common/startup.c           |   5 +
>  fs/Kconfig                 |   2 +
>  fs/Makefile                |   1 +
>  fs/pstore/Kconfig          |  88 ++++++++
>  fs/pstore/Makefile         |  10 +
>  fs/pstore/fs.c             | 280 +++++++++++++++++++++++++
>  fs/pstore/internal.h       |  19 ++
>  fs/pstore/platform.c       | 138 ++++++++++++
>  fs/pstore/ram.c            | 507 +++++++++++++++++++++++++++++++++++++++++++++
>  fs/pstore/ram_core.c       | 426 +++++++++++++++++++++++++++++++++++++
>  include/linux/pstore.h     |  90 ++++++++
>  include/linux/pstore_ram.h |  87 ++++++++
>  12 files changed, 1653 insertions(+)
>  create mode 100644 fs/pstore/Kconfig
>  create mode 100644 fs/pstore/Makefile
>  create mode 100644 fs/pstore/fs.c
>  create mode 100644 fs/pstore/internal.h
>  create mode 100644 fs/pstore/platform.c
>  create mode 100644 fs/pstore/ram.c
>  create mode 100644 fs/pstore/ram_core.c
>  create mode 100644 include/linux/pstore.h
>  create mode 100644 include/linux/pstore_ram.h
> 
> diff --git a/common/startup.c b/common/startup.c
> index 4a303b297aaf..093a23ba08c9 100644
> --- a/common/startup.c
> +++ b/common/startup.c
> @@ -60,6 +60,11 @@ static int mount_root(void)
>  		mount("none", "efivarfs", "/efivars", NULL);
>  	}
>  
> +	if (IS_ENABLED(CONFIG_FS_PSTORE)) {
> +		mkdir("/pstore", 0);
> +		mount("none", "pstore", "/pstore", NULL);
> +	}
> +
>  	return 0;
>  }
>  fs_initcall(mount_root);
> diff --git a/fs/Kconfig b/fs/Kconfig
> index 9217bc81ea1e..5413a9295ccc 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -89,4 +89,6 @@ config FS_SMHFS
>  	  located on a debugging host connected to the target running
>  	  Barebox
>  
> +source fs/pstore/Kconfig
> +
>  endmenu
> diff --git a/fs/Makefile b/fs/Makefile
> index 46932057c1b7..590c068e6045 100644
> --- a/fs/Makefile
> +++ b/fs/Makefile
> @@ -14,3 +14,4 @@ obj-$(CONFIG_FS_UIMAGEFS)	+= uimagefs.o
>  obj-$(CONFIG_FS_EFI)	 += efi.o
>  obj-$(CONFIG_FS_EFIVARFS) += efivarfs.o
>  obj-$(CONFIG_FS_SMHFS) += smhfs.o
> +obj-y			+= pstore/

Can we use 

   obj-$(CONFIG_FS_PSTORE) += pstore/

?

> diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig
> new file mode 100644
> index 000000000000..2455b5629cb1
> --- /dev/null
> +++ b/fs/pstore/Kconfig
> @@ -0,0 +1,88 @@
> +menuconfig FS_PSTORE
> +	bool
> +	prompt "pstore fs support"

-- 
Best regards,
  Antony Pavlov

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  reply	other threads:[~2015-12-02 18:13 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-02 13:48 [PATCH 0/9] RAMOOPS read support for Barebox Markus Pargmann
2015-12-02 13:48 ` [PATCH 1/9] arm: boards: karo-tx6x remove definition of DIV_ROUND_UP Markus Pargmann
2015-12-02 13:48 ` [PATCH 2/9] log2: Add missing __rounddown_pow_of_two() Markus Pargmann
2015-12-02 13:48 ` [PATCH 3/9] printk: Add missing include/declaration Markus Pargmann
2015-12-02 13:48 ` [PATCH 4/9] vsprintf: Add scnprintf from kernel Markus Pargmann
2015-12-02 13:48 ` [PATCH 5/9] lib: Import reed solomon code " Markus Pargmann
2015-12-04  7:12   ` Sascha Hauer
2015-12-04 13:22     ` Markus Pargmann
2015-12-02 13:48 ` [PATCH 6/9] arm: Clarify memory layout calculation Markus Pargmann
2015-12-04  7:09   ` Sascha Hauer
2015-12-02 13:48 ` [PATCH 7/9] arm: start: Add visible sdram region for barebox board data Markus Pargmann
2015-12-02 13:48 ` [PATCH 8/9] arm: Add RAMOOPS memory area Markus Pargmann
2015-12-04  7:07   ` Sascha Hauer
2015-12-04 13:30     ` Markus Pargmann
2015-12-07  9:15       ` Sascha Hauer
2015-12-02 13:48 ` [PATCH 9/9] fs: Add pstore filesystem Markus Pargmann
2015-12-02 18:37   ` Antony Pavlov [this message]
2015-12-04 13:10     ` Markus Pargmann

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