diff options
| author | Avadhut Naik <avadhut.naik@amd.com> | 2024-04-01 20:14:55 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-04-03 10:39:29 +0300 |
| commit | 186d7ef52c1f0c41450dedbdf6d6325d0a84e4c5 (patch) | |
| tree | b4115d361c072e410d8eee8605c17231abe30af7 | |
| parent | 98430645e383404e5f6f784cabbb08ebb4ac5499 (diff) | |
| download | linux-186d7ef52c1f0c41450dedbdf6d6325d0a84e4c5.tar.xz | |
tracing: Add the ::microcode field to the mce_record tracepoint
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
| -rw-r--r-- | include/trace/events/mce.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/trace/events/mce.h b/include/trace/events/mce.h index 294fccc329c1..f0f7b3cb2041 100644 --- a/include/trace/events/mce.h +++ b/include/trace/events/mce.h @@ -42,6 +42,7 @@ TRACE_EVENT(mce_record, __field( u8, cs ) __field( u8, bank ) __field( u8, cpuvendor ) + __field( u32, microcode ) ), TP_fast_assign( @@ -63,9 +64,10 @@ TRACE_EVENT(mce_record, __entry->cs = m->cs; __entry->bank = m->bank; __entry->cpuvendor = m->cpuvendor; + __entry->microcode = m->microcode; ), - 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", + 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", __entry->cpu, __entry->mcgcap, __entry->mcgstatus, __entry->bank, __entry->status, @@ -80,7 +82,8 @@ TRACE_EVENT(mce_record, __entry->cpuid, __entry->walltime, __entry->socketid, - __entry->apicid) + __entry->apicid, + __entry->microcode) ); #endif /* _TRACE_MCE_H */ |