[Devel] [PATCH] fs/fuse: disable optimization fuse and kio_pcs in debug kernel

[Kirill Tkhai]

On 08.06.2018 12:34, Pavel Butsykin wrote:
> Signed-off-by: Pavel Butsykin <pbutsykin at virtuozzo.com>
> ---
>  configs/kernel-3.10.0-x86_64-debug.config |  2 ++
>  fs/fuse/Kconfig                           |  6 ++++++
>  fs/fuse/Makefile                          | 22 ++++++++++++++++++++++
>  3 files changed, 30 insertions(+)
> 
> diff --git a/configs/kernel-3.10.0-x86_64-debug.config b/configs/kernel-3.10.0-x86_64-debug.config
> index b31047705216..6c9c28203443 100644
> --- a/configs/kernel-3.10.0-x86_64-debug.config
> +++ b/configs/kernel-3.10.0-x86_64-debug.config
> @@ -6100,6 +6100,8 @@ CONFIG_FUSE_KIO_NOOP=m
>  CONFIG_FUSE_KIO_NULLIO=m
>  CONFIG_FUSE_KIO_PCS=m
>  
> +CONFIG_FUSE_KIO_DEBUG=y
> +
>  #
>  # User resources
>  #
> diff --git a/fs/fuse/Kconfig b/fs/fuse/Kconfig
> index 433a39957c9d..7b61c6fe2d8d 100644
> --- a/fs/fuse/Kconfig
> +++ b/fs/fuse/Kconfig
> @@ -45,3 +45,9 @@ config FUSE_KIO_PCS
>  	depends on FUSE_FS
>  	help
>  	  This FUSE extension allows to forward io requests directly to PCS
> +
> +config FUSE_KIO_DEBUG
> +	bool "Disable optimization for fuse kdirect PCS"
> +	depends on DEBUG_KERNEL && FUSE_FS
> +	help
> + 	  Say Y if you want to disable optimization for fuse and fuse_kio_pcs modules.
> diff --git a/fs/fuse/Makefile b/fs/fuse/Makefile
> index cdefac9c4fbe..6d02013ed27a 100644
> --- a/fs/fuse/Makefile
> +++ b/fs/fuse/Makefile
> @@ -2,6 +2,28 @@
>  # Makefile for the FUSE filesystem.
>  #
>  
> +ifdef CONFIG_FUSE_KIO_DEBUG
> +CFLAGS_fuse.o := -DDEBUG -O0

What for this #define DEBUG is needed? Is it for printk() or something else?

> +CFLAGS_cuse.o := -DDEBUG -O0
> +CFLAGS_dev.o := -DDEBUG -O0
> +CFLAGS_dir.o := -DDEBUG -O0
> +CFLAGS_file.o := -DDEBUG -O0
> +CFLAGS_inode.o := -DDEBUG -O0
> +CFLAGS_control.o := -DDEBUG -O0
> +
> +CFLAGS_kio_noop.o := -DDEBUG -O0
> +CFLAGS_kio_nullio.o := -DDEBUG -O0
> +CFLAGS_pcs_fuse_kdirect.o := -DDEBUG -O0
> +CFLAGS_pcs_sock_io.o := -DDEBUG -O0
> +CFLAGS_pcs_rpc.o := -DDEBUG -O0
> +CFLAGS_pcs_req.o := -DDEBUG -O0
> +CFLAGS_pcs_map.o := -DDEBUG -O0
> +CFLAGS_pcs_cluster.o := -DDEBUG -O0
> +CFLAGS_pcs_cluster_core.o := -DDEBUG -O0
> +CFLAGS_pcs_cs.o := -DDEBUG -O0
> +CFLAGS_fuse_io.o := -DDEBUG -O0
> +endif
> +
>  obj-$(CONFIG_FUSE_FS) += fuse.o
>  obj-$(CONFIG_CUSE) += cuse.o
>  
>