From: Mathieu Desnoyers Date: Tue, 22 Nov 2022 20:39:23 +0000 (-0500) Subject: tracing/rseq: Add mm_cid field to rseq_update X-Git-Tag: v6.3-rc1~198^2~88 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=14a8644d4f76fb4afdfcc46e9193af867241bd42;p=thirdparty%2Fkernel%2Flinux.git tracing/rseq: Add mm_cid field to rseq_update Add the mm_cid field to the rseq_update event, allowing tracers to follow which mm_cid is observed by user-space, and whether negative mm_cid values are visible in case of internal scheduler implementation issues. Signed-off-by: Mathieu Desnoyers Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20221122203932.231377-22-mathieu.desnoyers@efficios.com --- diff --git a/include/trace/events/rseq.h b/include/trace/events/rseq.h index dde7a359b4ef1..823b47d1ba1e1 100644 --- a/include/trace/events/rseq.h +++ b/include/trace/events/rseq.h @@ -17,14 +17,17 @@ TRACE_EVENT(rseq_update, TP_STRUCT__entry( __field(s32, cpu_id) __field(s32, node_id) + __field(s32, mm_cid) ), TP_fast_assign( __entry->cpu_id = raw_smp_processor_id(); __entry->node_id = cpu_to_node(__entry->cpu_id); + __entry->mm_cid = task_mm_cid(t); ), - TP_printk("cpu_id=%d node_id=%d", __entry->cpu_id, __entry->node_id) + TP_printk("cpu_id=%d node_id=%d mm_cid=%d", __entry->cpu_id, + __entry->node_id, __entry->mm_cid) ); TRACE_EVENT(rseq_ip_fixup,