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| author | Chris Dearman <chris@mips.com> | 2007-03-26 14:48:50 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-03-29 23:46:35 +0100 |
| commit | fe99f1b184efb75c50dd8cbdfff99b559c2cb3b3 (patch) | |
| tree | 7baefefa620815b1d585af092e87c03a5ffdda17 /arch/mips/kernel/smtc-asm.S | |
| parent | cbde5ebc972c0577741a69c85d5e5afad19d813b (diff) | |
| download | linux-fe99f1b184efb75c50dd8cbdfff99b559c2cb3b3.tar.gz linux-fe99f1b184efb75c50dd8cbdfff99b559c2cb3b3.tar.bz2 linux-fe99f1b184efb75c50dd8cbdfff99b559c2cb3b3.zip | |
[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>
Diffstat (limited to 'arch/mips/kernel/smtc-asm.S')
0 files changed, 0 insertions, 0 deletions