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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2016-05-21 11:10:13 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-13 15:58:27 +0200 |
| commit | a62247e1f5c13b926f535bb64ecbd7f9fdef7b21 (patch) | |
| tree | 4ef1e9a1ec7b54531246af5007781f48e0e1a779 /drivers/base/topology.c | |
| parent | s390/ipl: rename diagnose enums (diff) | |
| download | linux-dev-a62247e1f5c13b926f535bb64ecbd7f9fdef7b21.tar.xz linux-dev-a62247e1f5c13b926f535bb64ecbd7f9fdef7b21.zip | |
topology/sysfs: provide drawer id and siblings attributes
The s390 cpu topology gained another hierarchy level. The top level is
now called drawer and contains several books. A book used to be the
top level.
In order to expose the cpu topology to user space allow to create new
sysfs attributes dependent on CONFIG_SCHED_DRAWER which an
architecture may define and select.
These additional attributes will be available:
/sys/devices/system/cpu/cpuX/topology/drawer_id
/sys/devices/system/cpu/cpuX/topology/drawer_siblings
/sys/devices/system/cpu/cpuX/topology/drawer_siblings_list
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/base/topology.c')
| -rw-r--r-- | drivers/base/topology.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/base/topology.c b/drivers/base/topology.c index 8b7d7f8e5851..df3c97cb4c99 100644 --- a/drivers/base/topology.c +++ b/drivers/base/topology.c @@ -77,6 +77,14 @@ static DEVICE_ATTR_RO(book_siblings); static DEVICE_ATTR_RO(book_siblings_list); #endif +#ifdef CONFIG_SCHED_DRAWER +define_id_show_func(drawer_id); +static DEVICE_ATTR_RO(drawer_id); +define_siblings_show_func(drawer_siblings, drawer_cpumask); +static DEVICE_ATTR_RO(drawer_siblings); +static DEVICE_ATTR_RO(drawer_siblings_list); +#endif + static struct attribute *default_attrs[] = { &dev_attr_physical_package_id.attr, &dev_attr_core_id.attr, @@ -89,6 +97,11 @@ static struct attribute *default_attrs[] = { &dev_attr_book_siblings.attr, &dev_attr_book_siblings_list.attr, #endif +#ifdef CONFIG_SCHED_DRAWER + &dev_attr_drawer_id.attr, + &dev_attr_drawer_siblings.attr, + &dev_attr_drawer_siblings_list.attr, +#endif NULL }; |