Commit Graph

4 Commits

Author SHA1 Message Date
Takashi Yoshii c20f326a62 sh: Fix up T-bit error handling in SH-4A mutex fastpath.
This corrects a deadlock encountered on ap325 in the cases where the
mutex is contended and the slow-path needs to be fallen back upon.

Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com>
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-29 11:56:03 +09:00
Paul Mundt 06be372454 sh: Fix an off-by-1 check in __mutex_fastpath_unlock().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:02 +09:00
Paul Mundt 77ba93a7ac sh: Fix up the SH-4A mutex fastpath semantics.
This fixes up the __mutex_fastpath_xxx() routines to match the semantics
noted in the comment. Previously these were looping rather than doing a
single-pass, which is counter-intuitive, as the slow path takes care of
the looping for us in the event of contention.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:43:52 +09:00
Michael Trimarchi 0c9122323a sh: Add SH-4A optimized fastpath mutex implementation.
Add fast mutex path implementation for the SH4A architecture

Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:42:55 +09:00