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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2015-12-22 17:25:19 +0200 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-06-01 15:28:40 -0600 |
| commit | 0f049c5ab8a7bc839647702fd29c63177f9e7c6b (patch) | |
| tree | 85d1bff227e830dae80c563cb0dca4038e86994f /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | df313b9ca8b14575387fbe53e5609caacde3e243 (diff) | |
stm class: Fix link list locking
Currently, the list of stm_sources linked to an stm device is protected by
a spinlock, which also means that sources' .unlink() method is called under
this spinlock. However, this method may (and does) sleep, which means
trouble.
This patch slightly reworks locking around stm::link_list so that bits that
might_sleep() are called with a mutex held instead. Modification of this
list requires both mutex and spinlock to be held, while looking at the list
can be done under either mutex or spinlock.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit c74f7e8281add80bdfa0ad2998b8df287b13df73)
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions