diff options
| author | Marc Zyngier <[email protected]> | 2011-11-16 12:27:39 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2011-11-17 17:44:04 +0100 |
| commit | 2ed0e645f358c26f4f4a7aed56a9488db0020ad1 (patch) | |
| tree | f8425da7c40d068d532cc53313eebdd3414e5047 /tools/perf/scripts/python/sctop.py | |
| parent | aa1b052a34d7ec85b23f4fba564df24b9477201b (diff) | |
genirq: Don't allow per cpu interrupts to be suspended
The power management functions related to interrupts do not know
(yet) about per-cpu interrupts and end up calling the wrong
low-level methods to enable/disable interrupts.
This leads to all kind of interesting issues (action taken on one
CPU only, updating a refcount which is not used otherwise...).
The workaround for the time being is simply to flag these interrupts
with IRQF_NO_SUSPEND. At least on ARM, these interrupts are actually
dealt with at the architecture level.
Reported-by: Santosh Shilimkar <[email protected]>
Tested-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions