diff options
| author | Cliff Wickman <cpw@sgi.com> | 2012-06-22 09:13:30 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-25 08:45:04 -0400 |
| commit | 26ef85770c765bb8b6b6922f8a413872dd8e3979 (patch) | |
| tree | 3f09673f746331fd2e237661ccbf12b220d880f9 /lib/raid6 | |
| parent | 11cab711f686893f2696a061dfca30454a624784 (diff) | |
x86/uv: Implement UV BAU runtime enable and disable control via /proc/sgi_uv/
This patch enables the BAU to be turned on or off dynamically.
echo "on" > /proc/sgi_uv/ptc_statistics
echo "off" > /proc/sgi_uv/ptc_statistics
The system may be booted with or without the nobau option.
Whether the system currently has the BAU off can be seen in
the /proc file -- normally with the baustats script.
Each cpu will have a 1 in the bauoff field if the BAU was turned
off, so baustats will give a count of cpus that have it off.
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Link: http://lkml.kernel.org/r/20120622131330.GB31884@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/raid6')
0 files changed, 0 insertions, 0 deletions