Re: [for-4.8 2/2] xen/arm: Provide device tree debugging helper in a single place

["Edgar E. Iglesias" <edgar.iglesias@gmail.com>]

On Tue, May 24, 2016 at 11:20:41AM +0100, Julien Grall wrote:
> Provide helper to debug the device tree in device_tree.h. This will
> avoid to have to redeclare helper for each file requiring debug.
> 
> Also replace DPRINT by the new helper dt_dprintk in domain_build.c

Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>


> 
> Signed-off-by: Julien Grall <julien.grall@arm.com>
> ---
>  xen/arch/arm/domain_build.c   | 71 +++++++++++++++++++++----------------------
>  xen/common/device_tree.c      |  2 --
>  xen/include/xen/device_tree.h |  9 ++++++
>  3 files changed, 43 insertions(+), 39 deletions(-)
> 
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index fb035ff..71ead8b 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -42,12 +42,6 @@ static void __init parse_dom0_mem(const char *s)
>  }
>  custom_param("dom0_mem", parse_dom0_mem);
>  
> -#ifdef CONFIG_DEVICE_TREE_DEBUG
> -# define DPRINT(fmt, args...) printk(XENLOG_DEBUG fmt, ##args)
> -#else
> -# define DPRINT(fmt, args...) do {} while ( 0 )
> -#endif
> -
>  //#define DEBUG_11_ALLOCATION
>  #ifdef DEBUG_11_ALLOCATION
>  # define D11PRINT(fmt, args...) printk(XENLOG_DEBUG fmt, ##args)
> @@ -364,7 +358,7 @@ static void allocate_memory(struct domain *d, struct kernel_info *kinfo)
>      {
>          int l;
>  
> -        DPRINT("memory node\n");
> +        dt_dprintk("memory node\n");
>  
>          reg_size = dt_cells_to_size(dt_n_addr_cells(memory) + dt_n_size_cells(memory));
>  
> @@ -571,7 +565,8 @@ static int make_memory_node(const struct domain *d,
>      __be32 reg[nr_cells];
>      __be32 *cells;
>  
> -    DPRINT("Create memory node (reg size %d, nr cells %d)\n", reg_size, nr_cells);
> +    dt_dprintk("Create memory node (reg size %d, nr cells %d)\n",
> +               reg_size, nr_cells);
>  
>      /* ePAPR 3.4 */
>      res = fdt_begin_node(fdt, "memory");
> @@ -588,8 +583,8 @@ static int make_memory_node(const struct domain *d,
>          u64 start = kinfo->mem.bank[i].start;
>          u64 size = kinfo->mem.bank[i].size;
>  
> -        DPRINT("  Bank %d: %#"PRIx64"->%#"PRIx64"\n",
> -                i, start, start + size);
> +        dt_dprintk("  Bank %d: %#"PRIx64"->%#"PRIx64"\n",
> +                   i, start, start + size);
>  
>          dt_child_set_range(&cells, parent, start, size);
>      }
> @@ -618,7 +613,7 @@ static int make_hypervisor_node(const struct kernel_info *kinfo,
>      int sizecells = dt_child_n_size_cells(parent);
>      void *fdt = kinfo->fdt;
>  
> -    DPRINT("Create hypervisor node\n");
> +    dt_dprintk("Create hypervisor node\n");
>  
>      /*
>       * Sanity-check address sizes, since addresses and sizes which do
> @@ -667,7 +662,7 @@ static int make_psci_node(void *fdt, const struct dt_device_node *parent)
>          "arm,psci-0.2""\0"
>          "arm,psci";
>  
> -    DPRINT("Create PSCI node\n");
> +    dt_dprintk("Create PSCI node\n");
>  
>      /* See linux Documentation/devicetree/bindings/arm/psci.txt */
>      res = fdt_begin_node(fdt, "psci");
> @@ -710,7 +705,7 @@ static int make_cpus_node(const struct domain *d, void *fdt,
>      bool_t clock_valid;
>      uint64_t mpidr_aff;
>  
> -    DPRINT("Create cpus node\n");
> +    dt_dprintk("Create cpus node\n");
>  
>      if ( !cpus )
>      {
> @@ -765,7 +760,8 @@ static int make_cpus_node(const struct domain *d, void *fdt,
>           * is enough for the current max vcpu number.
>           */
>          mpidr_aff = vcpuid_to_vaffinity(cpu);
> -        DPRINT("Create cpu@%"PRIx64" (logical CPUID: %d) node\n", mpidr_aff, cpu);
> +        dt_dprintk("Create cpu@%"PRIx64" (logical CPUID: %d) node\n",
> +                   mpidr_aff, cpu);
>  
>          snprintf(buf, sizeof(buf), "cpu@%"PRIx64, mpidr_aff);
>          res = fdt_begin_node(fdt, buf);
> @@ -821,11 +817,11 @@ static int make_gic_node(const struct domain *d, void *fdt,
>       */
>      if ( node != dt_interrupt_controller )
>      {
> -        DPRINT("  Skipping (secondary GIC)\n");
> +        dt_dprintk("  Skipping (secondary GIC)\n");
>          return 0;
>      }
>  
> -    DPRINT("Create gic node\n");
> +    dt_dprintk("Create gic node\n");
>  
>      res = fdt_begin_node(fdt, "interrupt-controller");
>      if ( res )
> @@ -837,7 +833,7 @@ static int make_gic_node(const struct domain *d, void *fdt,
>       */
>      if ( gic->phandle )
>      {
> -        DPRINT("  Set phandle = 0x%x\n", gic->phandle);
> +        dt_dprintk("  Set phandle = 0x%x\n", gic->phandle);
>          res = fdt_property_cell(fdt, "phandle", gic->phandle);
>          if ( res )
>              return res;
> @@ -894,7 +890,7 @@ static int make_timer_node(const struct domain *d, void *fdt,
>      u32 clock_frequency;
>      bool_t clock_valid;
>  
> -    DPRINT("Create timer node\n");
> +    dt_dprintk("Create timer node\n");
>  
>      dev = dt_find_matching_node(NULL, timer_ids);
>      if ( !dev )
> @@ -922,15 +918,15 @@ static int make_timer_node(const struct domain *d, void *fdt,
>       * level-sensitive interrupt */
>  
>      irq = timer_get_irq(TIMER_PHYS_SECURE_PPI);
> -    DPRINT("  Secure interrupt %u\n", irq);
> +    dt_dprintk("  Secure interrupt %u\n", irq);
>      set_interrupt_ppi(intrs[0], irq, 0xf, IRQ_TYPE_LEVEL_LOW);
>  
>      irq = timer_get_irq(TIMER_PHYS_NONSECURE_PPI);
> -    DPRINT("  Non secure interrupt %u\n", irq);
> +    dt_dprintk("  Non secure interrupt %u\n", irq);
>      set_interrupt_ppi(intrs[1], irq, 0xf, IRQ_TYPE_LEVEL_LOW);
>  
>      irq = timer_get_irq(TIMER_VIRT_PPI);
> -    DPRINT("  Virt interrupt %u\n", irq);
> +    dt_dprintk("  Virt interrupt %u\n", irq);
>      set_interrupt_ppi(intrs[2], irq, 0xf, IRQ_TYPE_LEVEL_LOW);
>  
>      res = fdt_property_interrupts(fdt, intrs, 3);
> @@ -984,7 +980,7 @@ static int map_irq_to_domain(const struct dt_device_node *dev,
>          }
>      }
>  
> -    DPRINT("  - IRQ: %u\n", irq);
> +    dt_dprintk("  - IRQ: %u\n", irq);
>      return 0;
>  }
>  
> @@ -1053,7 +1049,7 @@ static int map_range_to_domain(const struct dt_device_node *dev,
>          }
>      }
>  
> -    DPRINT("  - MMIO: %010"PRIx64" - %010"PRIx64"\n", addr, addr + len);
> +    dt_dprintk("  - MMIO: %010"PRIx64" - %010"PRIx64"\n", addr, addr + len);
>  
>      return 0;
>  }
> @@ -1070,7 +1066,8 @@ static int map_device_children(struct domain *d,
>  
>      if ( dt_device_type_is_equal(dev, "pci") )
>      {
> -        DPRINT("Mapping children of %s to guest\n", dt_node_full_name(dev));
> +        dt_dprintk("Mapping children of %s to guest\n",
> +                   dt_node_full_name(dev));
>  
>          ret = dt_for_each_irq_map(dev, &map_dt_irq_to_domain, d);
>          if ( ret < 0 )
> @@ -1105,12 +1102,12 @@ static int handle_device(struct domain *d, struct dt_device_node *dev)
>      nirq = dt_number_of_irq(dev);
>      naddr = dt_number_of_address(dev);
>  
> -    DPRINT("%s passthrough = %d nirq = %d naddr = %u\n", dt_node_full_name(dev),
> -           need_mapping, nirq, naddr);
> +    dt_dprintk("%s passthrough = %d nirq = %d naddr = %u\n",
> +               dt_node_full_name(dev), need_mapping, nirq, naddr);
>  
>      if ( dt_device_is_protected(dev) && need_mapping )
>      {
> -        DPRINT("%s setup iommu\n", dt_node_full_name(dev));
> +        dt_dprintk("%s setup iommu\n", dt_node_full_name(dev));
>          res = iommu_assign_dt_device(d, dev);
>          if ( res )
>          {
> @@ -1137,8 +1134,8 @@ static int handle_device(struct domain *d, struct dt_device_node *dev)
>           */
>          if ( rirq.controller != dt_interrupt_controller )
>          {
> -            DPRINT("irq %u not connected to primary controller."
> -                   "Connected to %s\n", i, dt_node_full_name(rirq.controller));
> +            dt_dprintk("irq %u not connected to primary controller. Connected to %s\n",
> +                      i, dt_node_full_name(rirq.controller));
>              continue;
>          }
>  
> @@ -1217,17 +1214,17 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
>  
>      path = dt_node_full_name(node);
>  
> -    DPRINT("handle %s\n", path);
> +    dt_dprintk("handle %s\n", path);
>  
>      /* Skip theses nodes and the sub-nodes */
>      if ( dt_match_node(skip_matches, node) )
>      {
> -        DPRINT("  Skip it (matched)\n");
> +        dt_dprintk("  Skip it (matched)\n");
>          return 0;
>      }
>      if ( platform_device_is_blacklisted(node) )
>      {
> -        DPRINT("  Skip it (blacklisted)\n");
> +        dt_dprintk("  Skip it (blacklisted)\n");
>          return 0;
>      }
>  
> @@ -1243,7 +1240,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
>      /* Skip nodes used by Xen */
>      if ( dt_device_used_by(node) == DOMID_XEN )
>      {
> -        DPRINT("  Skip it (used by Xen)\n");
> +        dt_dprintk("  Skip it (used by Xen)\n");
>          return 0;
>      }
>  
> @@ -1253,7 +1250,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo,
>       */
>      if ( device_get_class(node) == DEVICE_IOMMU )
>      {
> -        DPRINT(" IOMMU, skip it\n");
> +        dt_dprintk(" IOMMU, skip it\n");
>          return 0;
>      }
>  
> @@ -1428,7 +1425,7 @@ static int acpi_make_chosen_node(const struct kernel_info *kinfo)
>      const struct bootmodule *mod = kinfo->kernel_bootmodule;
>      void *fdt = kinfo->fdt;
>  
> -    DPRINT("Create chosen node\n");
> +    dt_dprintk("Create chosen node\n");
>      res = fdt_begin_node(fdt, "chosen");
>      if ( res )
>          return res;
> @@ -1472,7 +1469,7 @@ static int acpi_make_hypervisor_node(const struct kernel_info *kinfo,
>      /* Convenience alias */
>      void *fdt = kinfo->fdt;
>  
> -    DPRINT("Create hypervisor node\n");
> +    dt_dprintk("Create hypervisor node\n");
>  
>      /* See linux Documentation/devicetree/bindings/arm/xen.txt */
>      res = fdt_begin_node(fdt, "hypervisor");
> @@ -1502,7 +1499,7 @@ static int create_acpi_dtb(struct kernel_info *kinfo, struct membank tbl_add[])
>      int new_size;
>      int ret;
>  
> -    DPRINT("Prepare a min DTB for DOM0\n");
> +    dt_dprintk("Prepare a min DTB for DOM0\n");
>  
>      /* Allocate min size for DT */
>      new_size = ACPI_DOM0_FDT_MIN_SIZE;
> diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
> index 0df2e4b..b39c8ca 100644
> --- a/xen/common/device_tree.c
> +++ b/xen/common/device_tree.c
> @@ -55,7 +55,6 @@ struct dt_alias_prop {
>  static LIST_HEAD(aliases_lookup);
>  
>  #ifdef CONFIG_DEVICE_TREE_DEBUG
> -# define dt_dprintk(fmt, args...) printk(XENLOG_DEBUG fmt, ##args)
>  static void dt_dump_addr(const char *s, const __be32 *addr, int na)
>  {
>      dt_dprintk("%s", s);
> @@ -64,7 +63,6 @@ static void dt_dump_addr(const char *s, const __be32 *addr, int na)
>      dt_dprintk("\n");
>  }
>  #else
> -# define dt_dprintk(fmt, args...) do {} while ( 0 )
>  static void dt_dump_addr(const char *s, const __be32 *addr, int na) { }
>  #endif
>  
> diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
> index e3fe77c..d7d1b40 100644
> --- a/xen/include/xen/device_tree.h
> +++ b/xen/include/xen/device_tree.h
> @@ -753,6 +753,15 @@ int dt_parse_phandle_with_args(const struct dt_device_node *np,
>                                 const char *cells_name, int index,
>                                 struct dt_phandle_args *out_args);
>  
> +#ifdef CONFIG_DEVICE_TREE_DEBUG
> +#define dt_dprintk(fmt, args...)  \
> +    printk(XENLOG_DEBUG fmt, ## args)
> +#else
> +static inline void
> +__attribute__ ((__format__ (__printf__, 1, 2)))
> +dt_dprintk(const char *fmt, ...) {}
> +#endif
> +
>  #endif /* __XEN_DEVICE_TREE_H */
>  
>  /*
> -- 
> 1.9.1
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

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