Commit 8b62e64e authored Dec 12, 2025 by Tal Zussman Committed by Ingo Molnar Dec 13, 2025

x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h>

When the TLB_REMOTE_WRONG_CPU enum was introduced for the tlb_flush
tracepoint, the enum was not exported to user-space. Add it to the
appropriate macro definition to enable parsing by userspace tools, as
per:

  Link: https://lore.kernel.org/all/20150403013802.220157513@goodmis.org



[ mingo: Capitalize IPI, etc. ]

Fixes: 2815a56e ("x86/mm/tlb: Add tracepoint for TLB flush IPI to stale CPU")
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
Link: https://patch.msgid.link/20251212-tlb-trace-fix-v2-1-d322e0ad9b69@columbia.edu

parent 04350714

include/trace/events/tlb.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -12,8 +12,9 @@
		EM( TLB_FLUSH_ON_TASK_SWITCH, "flush on task switch" ) \
		EM( TLB_REMOTE_SHOOTDOWN, "remote shootdown" ) \
		EM( TLB_LOCAL_SHOOTDOWN, "local shootdown" ) \
		EM( TLB_LOCAL_MM_SHOOTDOWN, "local mm shootdown" ) \
		EMe( TLB_REMOTE_SEND_IPI, "remote ipi send" )
		EM( TLB_LOCAL_MM_SHOOTDOWN, "local MM shootdown" ) \
		EM( TLB_REMOTE_SEND_IPI, "remote IPI send" ) \
		EMe( TLB_REMOTE_WRONG_CPU, "remote wrong CPU" )

		/*
		* First define the enums in TLB_FLUSH_REASON to be exported to userspace