diff options
| author | Nathan Fontenot <nfont@linux.vnet.ibm.com> | 2013-04-24 06:07:39 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-04-26 16:08:26 +1000 |
| commit | e04fa61214a3e586282490af7e1b023522c1472a (patch) | |
| tree | 44efd1187b1b9d77341cec4b80c4355a36a73afb /arch/powerpc/kernel | |
| parent | 1b1218d32efdc81134eeb908935a18659cb3d9d7 (diff) | |
powerpc/pseries: Add /proc interface to control topology updates
There are instances in which we do not want topology updates to occur.
In order to allow this a /proc interface (/proc/powerpc/topology_updates)
is introduced so that topology updates can be enabled and disabled.
This patch also adds a prrn_is_enabled() call so that PRRN events are
handled in the kernel only if topology updating is enabled.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/rtasd.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c index 8e52b6d8b6f..1130c53ad65 100644 --- a/arch/powerpc/kernel/rtasd.c +++ b/arch/powerpc/kernel/rtasd.c @@ -29,6 +29,7 @@ #include <asm/nvram.h> #include <linux/atomic.h> #include <asm/machdep.h> +#include <asm/topology.h> static DEFINE_SPINLOCK(rtasd_log_lock); @@ -292,11 +293,13 @@ void prrn_schedule_update(u32 scope) static void handle_rtas_event(const struct rtas_error_log *log) { - if (log->type == RTAS_TYPE_PRRN) + if (log->type == RTAS_TYPE_PRRN) { /* For PRRN Events the extended log length is used to denote * the scope for calling rtas update-nodes. */ - prrn_schedule_update(log->extended_log_length); + if (prrn_is_enabled()) + prrn_schedule_update(log->extended_log_length); + } return; } |