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| author | Jesse Larrew <jlarrew@linux.vnet.ibm.com> | 2010-12-01 13:31:26 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-12-09 05:36:30 +0100 |
| commit | 3b7a27db3b6b5501e3d1c1628e6d5a547ffe76c6 (patch) | |
| tree | e30f3b6449ede133a03a56d8e57a82751ce3dbdc /arch/powerpc/kernel | |
| parent | powerpc/pseries: Poll VPA for topology changes and update NUMA maps (diff) | |
| download | linux-3b7a27db3b6b5501e3d1c1628e6d5a547ffe76c6.tar.xz linux-3b7a27db3b6b5501e3d1c1628e6d5a547ffe76c6.zip | |
powerpc: Disable VPHN polling during a suspend operation
Tie the polling mechanism into the ibm,suspend-me rtas call to
stop/restart polling before/after a suspend, hibernate, migrate,
or checkpoint restart operation. This ensures that the system has a
chance to disable the polling if the partition is migrated to a system
that does not support VPHN (and vice versa).
Signed-off-by: Jesse Larrew <jlarrew@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/rtas.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 8fe8bc61c10a..2097f2b3cba8 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -41,6 +41,7 @@ #include <asm/atomic.h> #include <asm/time.h> #include <asm/mmu.h> +#include <asm/topology.h> struct rtas_t rtas = { .lock = __ARCH_SPIN_LOCK_UNLOCKED @@ -713,6 +714,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w int cpu; slb_set_size(SLB_MIN_SIZE); + stop_topology_update(); printk(KERN_DEBUG "calling ibm,suspend-me on cpu %i\n", smp_processor_id()); while (rc == H_MULTI_THREADS_ACTIVE && !atomic_read(&data->done) && @@ -728,6 +730,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w rc = atomic_read(&data->error); atomic_set(&data->error, rc); + start_topology_update(); if (wake_when_done) { atomic_set(&data->done, 1); |