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14a8644d4f
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 <mathieu.desnoyers@efficios.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20221122203932.231377-22-mathieu.desnoyers@efficios.com
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM rseq
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#if !defined(_TRACE_RSEQ_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_RSEQ_H
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#include <linux/tracepoint.h>
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#include <linux/types.h>
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TRACE_EVENT(rseq_update,
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TP_PROTO(struct task_struct *t),
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TP_ARGS(t),
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TP_STRUCT__entry(
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__field(s32, cpu_id)
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__field(s32, node_id)
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__field(s32, mm_cid)
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),
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TP_fast_assign(
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__entry->cpu_id = raw_smp_processor_id();
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__entry->node_id = cpu_to_node(__entry->cpu_id);
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__entry->mm_cid = task_mm_cid(t);
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),
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TP_printk("cpu_id=%d node_id=%d mm_cid=%d", __entry->cpu_id,
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__entry->node_id, __entry->mm_cid)
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);
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TRACE_EVENT(rseq_ip_fixup,
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TP_PROTO(unsigned long regs_ip, unsigned long start_ip,
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unsigned long post_commit_offset, unsigned long abort_ip),
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TP_ARGS(regs_ip, start_ip, post_commit_offset, abort_ip),
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TP_STRUCT__entry(
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__field(unsigned long, regs_ip)
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__field(unsigned long, start_ip)
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__field(unsigned long, post_commit_offset)
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__field(unsigned long, abort_ip)
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),
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TP_fast_assign(
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__entry->regs_ip = regs_ip;
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__entry->start_ip = start_ip;
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__entry->post_commit_offset = post_commit_offset;
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__entry->abort_ip = abort_ip;
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),
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TP_printk("regs_ip=0x%lx start_ip=0x%lx post_commit_offset=%lu abort_ip=0x%lx",
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__entry->regs_ip, __entry->start_ip,
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__entry->post_commit_offset, __entry->abort_ip)
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);
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#endif /* _TRACE_SOCK_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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