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sparc64: Like x86 we should check current->mm during perf backtrace generation.
authorDavid S. Miller <davem@davemloft.net>
Mon, 15 Oct 2012 00:59:40 +0000 (17:59 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 28 Oct 2012 17:02:13 +0000 (10:02 -0700)
commit7f6df60755431d12897da745980316ad900d8b56
treebaefecf7b4a1293789df8eb9a97c4e6a4afd4b47tree | snapshot
parentad88238990a8e05db4c2d393372bb95bc4be5d99commit | diff
sparc64: Like x86 we should check current->mm during perf backtrace generation.

[ Upstream commit 08280e6c4c2e8049ac61d9e8e3536ec1df629c0d ]

If the MM is not active, only report the top-level PC.  Do not try to
access the address space.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/sparc/kernel/perf_event.c diff | blob | history
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