diff options
| author | Jeremy Kerr <jk@ozlabs.org> | 2018-02-20 14:48:44 +1030 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 14:04:26 +1000 |
| commit | e5538139e043bcae133da1e55f02b0646eb601fa (patch) | |
| tree | 7f448d4c9f367d8333e85312d551e279f5f1e612 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | fsi: gpio: Remove unused 'id' variable (diff) | |
| download | linux-e5538139e043bcae133da1e55f02b0646eb601fa.tar.gz linux-e5538139e043bcae133da1e55f02b0646eb601fa.zip | |
fsi: gpio: Use a mutex to protect transfers
Reduce time spent with interrupts disabled by limiting the critical
sections to bitbanging FSI symbols. We only need to ensure exclusive use
of the bus for an entire transfer, not that the transfer be performed in
atomic context.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions