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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-10-14 17:43:23 +0200
committerIngo Molnar <mingo@elte.hu>2010-10-18 19:58:55 +0200
commitd580ff8699e8811a9af37e9de4dea375401bdeec (patch)
treef2789d8a8628b856ad902c0bfbb1899e6cc67697 /lib
parentc6be5a5cb62592d9d661899a2aa78236eb00ffa5 (diff)
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perf, hw_breakpoint: Fix crash in hw_breakpoint creation
hw_breakpoint creation needs to account stuff per-task to ensure there is always sufficient hardware resources to back these things due to ptrace. With the perf per pmu context changes the event initialization no longer has access to the event context, for the simple reason that we need to first find the pmu (result of initialization) before we can find the context. This makes hw_breakpoints unhappy, because it can no longer do per task accounting, cure this by frobbing a task pointer in the event::hw bits for now... Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101014203625.391543667@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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