| commit | c88814fcb0d1e9d7eef38c20ca68c4ee3d05ed36 | |
| author | Chris Dearman <chris@mips.com> | |
| Mon, 26 Mar 2007 13:48:50 +0000 (26 14:48 +0100) | ||
| committer | Ralf Baechle <ralf@linux-mips.org> | |
| Mon, 26 Mar 2007 15:45:54 +0000 (26 16:45 +0100) | ||
| tree | d1243847085e14dd7d72892c8806903e35c35783 | treesnapshot (tar.gz zip) |
| parent | c238b40711a1b43d10037b2cf603de8d6ec5e274 | commitdiff |
[MIPS] lockdep: Deal with interrupt disable hazard in TRACE_IRQFLAGS
Between the mtc0 or di instruction that disables interrupts and the
following hazard barrier a processor may still take interrupts. If an
interrupt is taken after interrupts are disabled but before the state
is updated it will appear to restore_all that it is incorrectly returning
with interrupts disabled.
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Between the mtc0 or di instruction that disables interrupts and the
following hazard barrier a processor may still take interrupts. If an
interrupt is taken after interrupts are disabled but before the state
is updated it will appear to restore_all that it is incorrectly returning
with interrupts disabled.
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| arch/mips/kernel/genex.S | diffblobblamehistory |