linux-kernel - Re: [PATCH kernel v4 08/11] powerpc/powernv/ioda2: Export debug helper pe_level

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Date:	Tue, 03 May 2016 15:46:33 +1000
From:	Alistair Popple <alistair@...ple.id.au>
To:	Alexey Kardashevskiy <aik@...abs.ru>
Cc:	linuxppc-dev@...ts.ozlabs.org,
	Alex Williamson <alex.williamson@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Daniel Axtens <dja@...ens.net>,
	David Gibson <david@...son.dropbear.id.au>,
	Gavin Shan <gwshan@...ux.vnet.ibm.com>,
	Russell Currey <ruscur@...sell.cc>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH kernel v4 08/11] powerpc/powernv/ioda2: Export debug helper pe_level_printk()

There's one call to pr_warn() in pnv_npu_disable_bypass() that could arguably 
be converted to pe_warn(), but we can clean that up later as the patch looks 
fine and I'm assuming subsequent patches make use of these.

Reviewed-By: Alistair Popple <alistair@...ple.id.au>

On Fri, 29 Apr 2016 18:55:21 Alexey Kardashevskiy wrote:
> This exports debugging helper pe_level_printk() and corresponding macroses
> so they can be used in npu-dma.c.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>
> ---
>  arch/powerpc/platforms/powernv/pci-ioda.c | 9 +--------
>  arch/powerpc/platforms/powernv/pci.h      | 9 +++++++++
>  2 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c 
b/arch/powerpc/platforms/powernv/pci-ioda.c
> index 272521e..db7695f 100644
> --- a/arch/powerpc/platforms/powernv/pci-ioda.c
> +++ b/arch/powerpc/platforms/powernv/pci-ioda.c
> @@ -56,7 +56,7 @@
>  
>  static void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl);
>  
> -static void pe_level_printk(const struct pnv_ioda_pe *pe, const char 
*level,
> +void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level,
>  			    const char *fmt, ...)
>  {
>  	struct va_format vaf;
> @@ -87,13 +87,6 @@ static void pe_level_printk(const struct pnv_ioda_pe *pe, 
const char *level,
>  	va_end(args);
>  }
>  
> -#define pe_err(pe, fmt, ...)					\
> -	pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__)
> -#define pe_warn(pe, fmt, ...)					\
> -	pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__)
> -#define pe_info(pe, fmt, ...)					\
> -	pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__)
> -
>  static bool pnv_iommu_bypass_disabled __read_mostly;
>  
>  static int __init iommu_setup(char *str)
> diff --git a/arch/powerpc/platforms/powernv/pci.h 
b/arch/powerpc/platforms/powernv/pci.h
> index d574a9d..485e5b1 100644
> --- a/arch/powerpc/platforms/powernv/pci.h
> +++ b/arch/powerpc/platforms/powernv/pci.h
> @@ -236,6 +236,15 @@ extern void pnv_pci_dma_bus_setup(struct pci_bus *bus);
>  extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
>  extern void pnv_teardown_msi_irqs(struct pci_dev *pdev);
>  
> +extern void pe_level_printk(const struct pnv_ioda_pe *pe, const char 
*level,
> +			    const char *fmt, ...);
> +#define pe_err(pe, fmt, ...)					\
> +	pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__)
> +#define pe_warn(pe, fmt, ...)					\
> +	pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__)
> +#define pe_info(pe, fmt, ...)					\
> +	pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__)
> +
>  /* Nvlink functions */
>  extern void pnv_npu_init_dma_pe(struct pnv_ioda_pe *npe);
>  extern void pnv_npu_setup_dma_pe(struct pnv_ioda_pe *npe);
>