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author | Nathan Fontenot <nfont@linux.vnet.ibm.com> | 2014-01-27 10:54:06 -0600 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-03-07 15:53:13 +1100 |
commit | 9ac8cde938481cd0e3f700b8f071c4eca989c9f6 (patch) | |
tree | fde7e3f06a387cbe91661396b40b9dbc714e40cc /arch/powerpc/include/asm/machdep.h | |
parent | 22d651dcef536c75f75537290bf3da5038e68b6b (diff) | |
download | linux-stable-9ac8cde938481cd0e3f700b8f071c4eca989c9f6.tar.gz linux-stable-9ac8cde938481cd0e3f700b8f071c4eca989c9f6.tar.bz2 linux-stable-9ac8cde938481cd0e3f700b8f071c4eca989c9f6.zip |
powerpc/pseries: Use remove_memory() to remove memory
The memory remove code for powerpc/pseries should call remove_memory()
so that we are holding the hotplug_memory lock during memory remove
operations.
This patch updates the memory node remove handler to call remove_memory()
and adds a ppc_md.remove_memory() entry to handle pseries specific work
that is called from arch_remove_memory().
During memory remove in pseries_remove_memblock() we have to stay with
removing memory one section at a time. This is needed because of how memory
resources are handled. During memory add for pseries (via the probe file in
sysfs) we add memory one section at a time which gives us a memory resource
for each section. Future patches will aim to address this so will not have
to remove memory one section at a time.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/machdep.h')
-rw-r--r-- | arch/powerpc/include/asm/machdep.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 4da6574e9a20..5b6c03f1058f 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -282,6 +282,10 @@ struct machdep_calls { #ifdef CONFIG_ARCH_RANDOM int (*get_random_long)(unsigned long *v); #endif + +#ifdef CONFIG_MEMORY_HOTREMOVE + int (*remove_memory)(u64, u64); +#endif }; extern void e500_idle(void); |