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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-01 12:45:27 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-09 10:55:02 +1100 |
| commit | fe1952fc0afb9a2e4c79f103c08aef5d13db1873 (patch) | |
| tree | ea1fc050910844e3c72d8fa576e7bf429c09d788 /arch/powerpc/kernel/exceptions-64s.S | |
| parent | 7450f6f03e9d6dc95d2014c4cceac8adf98560e8 (diff) | |
powerpc: Rework runlatch code
This moves the inlines into system.h and changes the runlatch
code to use the thread local flags (non-atomic) rather than
the TIF flags (atomic) to keep track of the latch state.
The code to turn it back on in an asynchronous interrupt is
now simplified and partially inlined.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 2240d4ecec0..3af80e82830 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -483,6 +483,9 @@ machine_check_common: system_call_entry: b system_call_common +ppc64_runlatch_on_trampoline: + b .__ppc64_runlatch_on + /* * Here we have detected that the kernel stack pointer is bad. * R9 contains the saved CR, r13 points to the paca, |