| commit | 0c25e9e6cbe7b233bb91d14d0e2c258bf8e6ec83 | |
| author | David S. Miller <davem@davemloft.net> | |
| Tue, 13 Apr 2010 05:21:52 +0000 (12 22:21 -0700) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Tue, 13 Apr 2010 05:21:52 +0000 (12 22:21 -0700) | ||
| tree | 5861eaf8ece8ad9bdd9b23c0f69f2d61c994961c | treesnapshot (tar.gz zip) |
| parent | cb256aa60409efd803806cfb0528a4b3f8397dba | commitdiff |
sparc64: Adjust __raw_local_irq_save() to cooperate in NMIs.
If we are in an NMI then doing a plain raw_local_irq_disable() will
write PIL_NORMAL_MAX into %pil, which is lower than PIL_NMI, and thus
we'll re-enable NMIs and recurse.
Doing a simple:
%pil = %pil | PIL_NORMAL_MAX
does what we want, if we're already at PIL_NMI (15) we leave it at
that setting, else we set it to PIL_NORMAL_MAX (14).
This should get the function tracer working on sparc64.
Signed-off-by: David S. Miller <davem@davemloft.net>
If we are in an NMI then doing a plain raw_local_irq_disable() will
write PIL_NORMAL_MAX into %pil, which is lower than PIL_NMI, and thus
we'll re-enable NMIs and recurse.
Doing a simple:
%pil = %pil | PIL_NORMAL_MAX
does what we want, if we're already at PIL_NMI (15) we leave it at
that setting, else we set it to PIL_NORMAL_MAX (14).
This should get the function tracer working on sparc64.
Signed-off-by: David S. Miller <davem@davemloft.net>
| arch/sparc/include/asm/irqflags_64.h | diffblobblamehistory |