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| author | David S. Miller <davem@davemloft.net> | 2008-08-12 18:33:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-08-12 18:33:56 -0700 |
| commit | 4f70f7a91bffdcc39f088748dc678953eb9a3fbd (patch) | |
| tree | 934591a9518fbed87c14b758a1744cc30c9dfbb8 /arch/sparc64/lib | |
| parent | e34456825de0d3ac4c4e8fe0bdc6b599404ea06f (diff) | |
| download | linux-4f70f7a91bffdcc39f088748dc678953eb9a3fbd.tar.bz2 | |
sparc64: Implement IRQ stacks.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/lib')
| -rw-r--r-- | arch/sparc64/lib/mcount.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S index 734caf0cec09..fad90ddb3a28 100644 --- a/arch/sparc64/lib/mcount.S +++ b/arch/sparc64/lib/mcount.S @@ -49,6 +49,28 @@ mcount: cmp %sp, %g3 bg,pt %xcc, 1f nop + lduh [%g6 + TI_CPU], %g1 + sethi %hi(hardirq_stack), %g3 + or %g3, %lo(hardirq_stack), %g3 + sllx %g1, 3, %g1 + ldx [%g3 + %g1], %g7 + sub %g7, STACK_BIAS, %g7 + cmp %sp, %g7 + bleu,pt %xcc, 2f + sethi %hi(THREAD_SIZE), %g3 + add %g7, %g3, %g7 + cmp %sp, %g7 + blu,pn %xcc, 1f +2: sethi %hi(softirq_stack), %g3 + or %g3, %lo(softirq_stack), %g3 + ldx [%g3 + %g1], %g7 + cmp %sp, %g7 + bleu,pt %xcc, 2f + sethi %hi(THREAD_SIZE), %g3 + add %g7, %g3, %g7 + cmp %sp, %g7 + blu,pn %xcc, 1f + nop /* If we are already on ovstack, don't hop onto it * again, we are already trying to output the stack overflow * message. |