perf/x86/intel: Set PERF_ATTACH_SCHED_CB for large PEBS and LBR
stable inclusion from stable-5.10.24 commit 896846b8151d9e3ce634ba95aee3d731a16d9f5f bugzilla: 51348 -------------------------------- [ Upstream commit afbef301 ] To supply a PID/TID for large PEBS, it requires flushing the PEBS buffer in a context switch. For normal LBRs, a context switch can flip the address space and LBR entries are not tagged with an identifier, we need to wipe the LBR, even for per-cpu events. For LBR callstack, save/restore the stack is required during a context switch. Set PERF_ATTACH_SCHED_CB for the event with large PEBS & LBR. Fixes: 9c964efa ("perf/x86/intel: Drain the PEBS buffer during context switches") Signed-off-by:Kan Liang <kan.liang@linux.intel.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20201130193842.10569-2-kan.liang@linux.intel.com Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Chen Jun <chenjun102@huawei.com> Acked-by:
Weilong Chen <chenweilong@huawei.com> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com>
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