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| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 09:14:30 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 16:43:02 -0700 |
| commit | fb7aa03db605e4f0b9a62cd4c77177c2596edd95 (patch) | |
| tree | 503946923a498b938aa849457310ceedaefbd806 /drivers/tty/tty_ioctl.c | |
| parent | f95499c3030fe1bfad57745f2db1959c5b43dca8 (diff) | |
| download | lwn-fb7aa03db605e4f0b9a62cd4c77177c2596edd95.tar.gz lwn-fb7aa03db605e4f0b9a62cd4c77177c2596edd95.zip | |
n_tty: Separate buffer indices to prevent cache-line sharing
If the read buffer indices are in the same cache-line, cpus will
contended over the cache-line (so called 'false sharing').
Separate the producer-published fields from the consumer-published
fields; document the locks relevant to each field.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_ioctl.c')
0 files changed, 0 insertions, 0 deletions