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| author | John Allen <jallen@linux.vnet.ibm.com> | 2017-01-06 13:27:26 -0600 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-02-02 16:57:39 +1100 |
| commit | e70d59700fc32c9249b26acd4120303c497e84f1 (patch) | |
| tree | 8562d7b8f5d4926b70dfa3d507264f35b9210f78 /arch/powerpc/include/asm/rtas.h | |
| parent | c21f515c743687c6c2b3d38227e6ad8e6b733409 (diff) | |
| download | op-kernel-dev-e70d59700fc32c9249b26acd4120303c497e84f1.zip op-kernel-dev-e70d59700fc32c9249b26acd4120303c497e84f1.tar.gz | |
powerpc/pseries: Introduce memory hotplug READD operation
Currently, memory must be hot removed and subsequently re-added in order
to dynamically update the affinity of LMBs specified by a PRRN event.
Earlier implementations of the PRRN event handler ran into issues in which
the hot remove would occur successfully, but a hotplug event would be
initiated from another source and grab the hotplug lock preventing the hot
add from occurring. To prevent this situation, this patch introduces the
notion of a hot "readd" action for memory which atomizes a hot remove and
a hot add into a single, serialized operation on the hotplug queue.
Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/rtas.h')
| -rw-r--r-- | arch/powerpc/include/asm/rtas.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 9c23baa..076b892 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -318,6 +318,7 @@ struct pseries_hp_errorlog { #define PSERIES_HP_ELOG_ACTION_ADD 1 #define PSERIES_HP_ELOG_ACTION_REMOVE 2 +#define PSERIES_HP_ELOG_ACTION_READD 3 #define PSERIES_HP_ELOG_ID_DRC_NAME 1 #define PSERIES_HP_ELOG_ID_DRC_INDEX 2 |
