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186d7ef52c
Currently, the microcode field (Microcode Revision) of 'struct mce' is not exposed to userspace through the mce_record tracepoint. Knowing the microcode version on which the MCE was received is critical information for debugging. If the version is not recorded, later attempts to acquire the version might result in discrepancies since it can be changed at runtime. Add microcode version to the tracepoint to prevent ambiguity over the active version on the system when the MCE was received. Signed-off-by: Avadhut Naik <avadhut.naik@amd.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20240401171455.1737976-3-avadhut.naik@amd.com
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM mce
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#if !defined(_TRACE_MCE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_MCE_H
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#include <linux/ktime.h>
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#include <linux/tracepoint.h>
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#include <asm/mce.h>
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/*
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* MCE Event Record.
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*
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* Only very relevant and transient information which cannot be
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* gathered from a system by any other means or which can only be
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* acquired arduously should be added to this record.
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*/
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TRACE_EVENT(mce_record,
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TP_PROTO(struct mce *m),
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TP_ARGS(m),
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TP_STRUCT__entry(
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__field( u64, mcgcap )
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__field( u64, mcgstatus )
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__field( u64, status )
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__field( u64, addr )
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__field( u64, misc )
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__field( u64, synd )
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__field( u64, ipid )
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__field( u64, ip )
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__field( u64, tsc )
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__field( u64, ppin )
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__field( u64, walltime )
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__field( u32, cpu )
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__field( u32, cpuid )
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__field( u32, apicid )
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__field( u32, socketid )
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__field( u8, cs )
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__field( u8, bank )
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__field( u8, cpuvendor )
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__field( u32, microcode )
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),
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TP_fast_assign(
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__entry->mcgcap = m->mcgcap;
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__entry->mcgstatus = m->mcgstatus;
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__entry->status = m->status;
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__entry->addr = m->addr;
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__entry->misc = m->misc;
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__entry->synd = m->synd;
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__entry->ipid = m->ipid;
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__entry->ip = m->ip;
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__entry->tsc = m->tsc;
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__entry->ppin = m->ppin;
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__entry->walltime = m->time;
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__entry->cpu = m->extcpu;
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__entry->cpuid = m->cpuid;
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__entry->apicid = m->apicid;
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__entry->socketid = m->socketid;
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__entry->cs = m->cs;
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__entry->bank = m->bank;
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__entry->cpuvendor = m->cpuvendor;
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__entry->microcode = m->microcode;
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),
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TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx, ADDR: %016Lx, MISC: %016Lx, SYND: %016Lx, RIP: %02x:<%016Lx>, TSC: %llx, PPIN: %llx, vendor: %u, CPUID: %x, time: %llu, socket: %u, APIC: %x, microcode: %x",
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__entry->cpu,
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__entry->mcgcap, __entry->mcgstatus,
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__entry->bank, __entry->status,
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__entry->ipid,
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__entry->addr,
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__entry->misc,
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__entry->synd,
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__entry->cs, __entry->ip,
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__entry->tsc,
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__entry->ppin,
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__entry->cpuvendor,
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__entry->cpuid,
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__entry->walltime,
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__entry->socketid,
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__entry->apicid,
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__entry->microcode)
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);
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#endif /* _TRACE_MCE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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