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| author | Nathan Fontenot <nfont@linux.vnet.ibm.com> | 2017-12-01 19:46:44 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-16 10:23:48 +0300 |
| commit | 22508f3dc985f6ed948293297f728605075fe6a7 (patch) | |
| tree | daf20d36af95534d48d7deb352371672f75beca9 /arch/powerpc/mm/numa.c | |
| parent | 35f80debaef07bdaeffbbb20a6e999d8ac47972c (diff) | |
| download | linux-22508f3dc985f6ed948293297f728605075fe6a7.tar.xz | |
powerpc/numa: Look up device node in of_get_usable_memory()
Look up the device node for the usable memory property instead
of having it passed in as a parameter. This changes precedes an update
in which the calling routines for of_get_usable_memory() will not have
the device node pointer to pass in.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/numa.c')
| -rw-r--r-- | arch/powerpc/mm/numa.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index a0214aa2dd78..baba6403488b 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -184,11 +184,19 @@ static const __be32 *of_get_associativity(struct device_node *dev) * it exists (the property exists only in kexec/kdump kernels, * added by kexec-tools) */ -static const __be32 *of_get_usable_memory(struct device_node *memory) +static const __be32 *of_get_usable_memory(void) { + struct device_node *memory; const __be32 *prop; u32 len; + + memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); + if (!memory) + return NULL; + prop = of_get_property(memory, "linux,drconf-usable-memory", &len); + of_node_put(memory); + if (!prop || len < sizeof(unsigned int)) return NULL; return prop; @@ -674,7 +682,7 @@ static void __init parse_drconf_memory(struct device_node *memory) return; /* check if this is a kexec/kdump kernel */ - usm = of_get_usable_memory(memory); + usm = of_get_usable_memory(); if (usm != NULL) is_kexec_kdump = 1; |