| commit | fe99f1b184efb75c50dd8cbdfff99b559c2cb3b3 | |
| 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> | |
| Thu, 29 Mar 2007 22:46:35 +0000 (29 23:46 +0100) | ||
| tree | 7baefefa620815b1d585af092e87c03a5ffdda17 | treesnapshot (tar.gz zip) |
| parent | cbde5ebc972c0577741a69c85d5e5afad19d813b | 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 |