From: Stefano Stabellini <sstabellini@kernel.org>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <stefanos@xilinx.com>,
julien.grall@arm.com, sstabellini@kernel.org
Subject: [Xen-devel] [PATCH v2 06/10] xen/arm: extend device_tree_for_each_node
Date: Tue, 30 Apr 2019 14:02:48 -0700 [thread overview]
Message-ID: <1556658172-8824-6-git-send-email-sstabellini@kernel.org> (raw)
Message-ID: <20190430210248.9uElB9lWJ-grv9UqXxivzbyW5-Wi7R1e4ebLuVi4G-0@z> (raw)
In-Reply-To: <alpine.DEB.2.10.1904301358560.13269@sstabellini-ThinkPad-X260>
Add two new paramters to device_tree_for_each_node: node and depth.
Node is the node to start the search from and depth is the min depth of
the search.
Passing 0, 0 triggers the old behavior.
Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
---
Changes in v2:
- new
---
xen/arch/arm/acpi/boot.c | 2 +-
xen/arch/arm/bootfdt.c | 12 ++++++------
xen/include/xen/device_tree.h | 5 +++--
3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c
index 9b29769..cfc85c2 100644
--- a/xen/arch/arm/acpi/boot.c
+++ b/xen/arch/arm/acpi/boot.c
@@ -248,7 +248,7 @@ int __init acpi_boot_table_init(void)
*/
if ( param_acpi_off || ( !param_acpi_force
&& device_tree_for_each_node(device_tree_flattened,
- dt_scan_depth1_nodes, NULL)))
+ 0, 0, dt_scan_depth1_nodes, NULL)))
goto disable;
/*
diff --git a/xen/arch/arm/bootfdt.c b/xen/arch/arm/bootfdt.c
index 891b4b6..e7b08ed 100644
--- a/xen/arch/arm/bootfdt.c
+++ b/xen/arch/arm/bootfdt.c
@@ -77,6 +77,8 @@ static u32 __init device_tree_get_u32(const void *fdt, int node,
/**
* device_tree_for_each_node - iterate over all device tree nodes
* @fdt: flat device tree.
+ * @node: node to start the search from
+ * @depth: min depth of the search
* @func: function to call for each node.
* @data: data to pass to @func.
*
@@ -86,17 +88,15 @@ static u32 __init device_tree_get_u32(const void *fdt, int node,
* returns a value different from 0, that value is returned immediately.
*/
int __init device_tree_for_each_node(const void *fdt,
+ int node, int depth,
device_tree_node_func func,
void *data)
{
- int node;
- int depth;
u32 address_cells[DEVICE_TREE_MAX_DEPTH];
u32 size_cells[DEVICE_TREE_MAX_DEPTH];
- int ret;
+ int ret, min_depth = depth;
- for ( node = 0, depth = 0;
- node >=0 && depth >= 0;
+ for ( ; node >=0 && depth >= min_depth;
node = fdt_next_node(fdt, node, &depth) )
{
const char *name = fdt_get_name(fdt, node, NULL);
@@ -357,7 +357,7 @@ size_t __init boot_fdt_info(const void *fdt, paddr_t paddr)
add_boot_module(BOOTMOD_FDT, paddr, fdt_totalsize(fdt), false);
- device_tree_for_each_node((void *)fdt, early_scan_node, NULL);
+ device_tree_for_each_node((void *)fdt, 0, 0, early_scan_node, NULL);
early_print_info();
return fdt_totalsize(fdt);
diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index 7408a6c..4ff78ba 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -159,8 +159,9 @@ typedef int (*device_tree_node_func)(const void *fdt,
extern const void *device_tree_flattened;
int device_tree_for_each_node(const void *fdt,
- device_tree_node_func func,
- void *data);
+ int node, int depth,
+ device_tree_node_func func,
+ void *data);
/**
* dt_unflatten_host_device_tree - Unflatten the host device tree
--
1.9.1
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next prev parent reply other threads:[~2019-04-30 21:07 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 21:02 [PATCH v2 0/10] iomem memory policy Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 01/10] xen: add a p2mt parameter to map_mmio_regions Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-02 14:59 ` Jan Beulich
2019-05-02 14:59 ` [Xen-devel] " Jan Beulich
2019-05-02 18:49 ` Stefano Stabellini
2019-05-02 18:49 ` [Xen-devel] " Stefano Stabellini
2019-05-15 13:39 ` Oleksandr
2019-05-15 13:39 ` [Xen-devel] " Oleksandr
2019-04-30 21:02 ` [PATCH v2 02/10] xen: rename un/map_mmio_regions to un/map_regions Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-01 9:22 ` Julien Grall
2019-05-01 9:22 ` [Xen-devel] " Julien Grall
2019-06-17 21:24 ` Stefano Stabellini
2019-06-18 11:05 ` Julien Grall
2019-06-18 20:19 ` Stefano Stabellini
2019-05-02 15:03 ` Jan Beulich
2019-05-02 15:03 ` [Xen-devel] " Jan Beulich
2019-05-02 18:55 ` Stefano Stabellini
2019-05-02 18:55 ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 03/10] xen: extend XEN_DOMCTL_memory_mapping to handle memory policy Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-02 15:12 ` Jan Beulich
2019-05-02 15:12 ` [Xen-devel] " Jan Beulich
2019-06-17 21:28 ` Stefano Stabellini
2019-06-18 8:59 ` Jan Beulich
2019-06-18 20:32 ` Stefano Stabellini
2019-06-18 23:15 ` Stefano Stabellini
2019-06-19 6:53 ` Jan Beulich
2019-05-07 16:41 ` Julien Grall
2019-05-07 16:41 ` [Xen-devel] " Julien Grall
2019-06-17 22:43 ` Stefano Stabellini
2019-06-18 11:13 ` Julien Grall
2019-05-15 14:40 ` Oleksandr
2019-05-15 14:40 ` [Xen-devel] " Oleksandr
2019-04-30 21:02 ` [PATCH v2 04/10] libxc: introduce xc_domain_mem_map_policy Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 05/10] libxl/xl: add memory policy option to iomem Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-01 9:42 ` Julien Grall
2019-05-01 9:42 ` [Xen-devel] " Julien Grall
2019-06-17 22:32 ` Stefano Stabellini
2019-06-18 11:09 ` Julien Grall
2019-06-18 11:15 ` Julien Grall
2019-06-18 22:07 ` Stefano Stabellini
2019-06-18 22:20 ` Julien Grall
2019-06-18 22:46 ` Stefano Stabellini
2019-04-30 21:02 ` Stefano Stabellini [this message]
2019-04-30 21:02 ` [Xen-devel] [PATCH v2 06/10] xen/arm: extend device_tree_for_each_node Stefano Stabellini
2019-05-07 17:12 ` Julien Grall
2019-05-07 17:12 ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 07/10] xen/arm: make process_memory_node a device_tree_node_func Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-01 9:47 ` Julien Grall
2019-05-01 9:47 ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 08/10] xen/arm: keep track of reserved-memory regions Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-01 10:03 ` Julien Grall
2019-05-01 10:03 ` [Xen-devel] " Julien Grall
2019-06-21 23:47 ` Stefano Stabellini
2019-05-07 17:21 ` Julien Grall
2019-05-07 17:21 ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 09/10] xen/arm: map reserved-memory regions as normal memory in dom0 Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-07 19:52 ` Julien Grall
2019-05-07 19:52 ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 10/10] xen/arm: add reserved-memory regions to the dom0 memory node Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-05-07 20:15 ` Julien Grall
2019-05-07 20:15 ` [Xen-devel] " Julien Grall
2019-05-10 20:51 ` Stefano Stabellini
2019-05-10 20:51 ` [Xen-devel] " Stefano Stabellini
2019-05-10 21:43 ` Julien Grall
2019-05-10 21:43 ` [Xen-devel] " Julien Grall
2019-05-11 12:40 ` Julien Grall
2019-05-11 12:40 ` [Xen-devel] " Julien Grall
2019-05-20 21:26 ` Stefano Stabellini
2019-05-20 21:26 ` [Xen-devel] " Stefano Stabellini
2019-05-20 22:38 ` Julien Grall
2019-05-20 22:38 ` [Xen-devel] " Julien Grall
2019-06-05 16:30 ` Julien Grall
2019-06-21 23:47 ` Stefano Stabellini
2019-05-16 16:52 ` [PATCH v2 0/10] iomem memory policy Oleksandr
2019-05-16 16:52 ` [Xen-devel] " Oleksandr
2019-06-21 23:48 ` Stefano Stabellini
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