diff options
| author |   Robin Getz <rgetz@blackfin.uclinux.org> | 2008-03-26 09:17:43 +0800 |
|---|---|---|
| committer |   Bryan Wu <cooloney@kernel.org> | 2008-03-26 09:17:43 +0800 |
| commit | 904656cda10ce985e6bc8b16488b58236eaec8e2 (patch) | |
| tree | f995993f5dddd985da0dec9207feef984fca3725 | |
| parent | [Blackfin] arch: fix bug - when we crash, current is not valid (diff) | |
| download | linux-dev-904656cda10ce985e6bc8b16488b58236eaec8e2.tar.xz linux-dev-904656cda10ce985e6bc8b16488b58236eaec8e2.zip | |
[Blackfin] arch: fix bug - grab locks when not atomic
grab locks when not atomic - this fixes the issues
sometimes seen when using magic sysrq.
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
| -rw-r--r-- | arch/blackfin/kernel/traps.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 7557d0dce216..de249d6fdd9c 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -75,7 +75,7 @@ static void decode_address(char *buf, unsigned long address) struct task_struct *p; struct mm_struct *mm; unsigned long flags, offset; - unsigned int in_exception = bfin_read_IPEND() & 0x10; + unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); #ifdef CONFIG_KALLSYMS unsigned long symsize; @@ -117,7 +117,7 @@ static void decode_address(char *buf, unsigned long address) */ write_lock_irqsave(&tasklist_lock, flags); for_each_process(p) { - mm = (in_exception ? p->mm : get_task_mm(p)); + mm = (in_atomic ? p->mm : get_task_mm(p)); if (!mm) continue; @@ -146,14 +146,14 @@ static void decode_address(char *buf, unsigned long address) sprintf(buf, "<0x%p> [ %s + 0x%lx ]", (void *)address, name, offset); - if (!in_exception) + if (!in_atomic) mmput(mm); goto done; } vml = vml->next; } - if (!in_exception) + if (!in_atomic) mmput(mm); } |