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| author | Satyajit Desai <sadesai@codeaurora.org> | 2016-12-02 17:13:27 -0800 |
|---|---|---|
| committer | Satyajit Desai <sadesai@codeaurora.org> | 2016-12-05 16:38:49 -0800 |
| commit | 9d9a22ef619525f1cdc3a786c6e8880c921a8711 (patch) | |
| tree | 6f862582c2f42d4254ffaa9473c3ac89fa575b69 /tools/perf/scripts/python | |
| parent | a27b2f17890884a05b18ae69c7eae079cdde4b16 (diff) | |
coresight: stm: Remove spin lock usage for channel allocation
Current usage of spinlock in channel allocation might result in
live lock issue. In order to avoid this we move to a per cpu
channel allocation scheme. We rely on preemption being disabled
when we allocate channel to avoid any conflict. If we end up
handling an interrupt which logs when preemption is disabled it
is still gauranteed to not interfere with the current logging
as the channel id will be freed up before resuming.
Change-Id: Ia343890dfd9bded84db75e8b13ad1860dec1bbcd
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions