From: "Yan, Zheng"
When the LBR call stack is enabled, it is necessary to save/restore
the LBR stack on context switch. The solution is saving/restoring
the LBR stack to/from task's perf event context.
Signed-off-by: Yan, Zheng
---
arch/x86/kernel/cpu/perf_event.c | 1 +
From: Yan, Zheng zheng.z@intel.com
When the LBR call stack is enabled, it is necessary to save/restore
the LBR stack on context switch. The solution is saving/restoring
the LBR stack to/from task's perf event context.
Signed-off-by: Yan, Zheng zheng.z@intel.com
---
On Tue, Jun 25, 2013 at 04:47:16PM +0800, Yan, Zheng wrote:
> From: "Yan, Zheng"
>
> When the LBR call stack is enabled, it is necessary to save/restore
> the stack on context switch. The solution is saving/restoring the
> stack to/from task's perf event context. If task has no perf event
>
On Tue, Jun 25, 2013 at 04:47:16PM +0800, Yan, Zheng wrote:
From: Yan, Zheng zheng.z@intel.com
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no
From: "Yan, Zheng"
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
Signed-off-by: Yan, Zheng
From: Yan, Zheng zheng.z@intel.com
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
From: "Yan, Zheng"
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
Signed-off-by: Yan, Zheng
From: Yan, Zheng zheng.z@intel.com
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
From: "Yan, Zheng"
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
Signed-off-by: Yan, Zheng
From: Yan, Zheng zheng.z@intel.com
When the LBR call stack is enabled, it is necessary to save/restore
the stack on context switch. The solution is saving/restoring the
stack to/from task's perf event context. If task has no perf event
context, just flush the stack on context switch.
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