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author | Paul E. McKenney <paulmck@kernel.org> | 2022-12-17 00:57:51 +0100 |
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committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-20 00:54:41 +0100 |
commit | 1a3ea611fc105759cf1023e922d00cf44569b8bb (patch) | |
tree | 4fef9a5d7ac343ee3c521a9abd6ebdf2ab40fa2d /lib/nmi_backtrace.c | |
parent | Linux 6.2-rc1 (diff) | |
download | linux-1a3ea611fc105759cf1023e922d00cf44569b8bb.tar.xz linux-1a3ea611fc105759cf1023e922d00cf44569b8bb.zip |
x86/nmi: Accumulate NMI-progress evidence in exc_nmi()
CPUs ignoring NMIs is often a sign of those CPUs going bad, but there
are quite a few other reasons why a CPU might ignore NMIs. Therefore,
accumulate evidence within exc_nmi() as to what might be preventing a
given CPU from responding to an NMI.
[ paulmck: Apply Peter Zijlstra feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <x86@kernel.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/nmi_backtrace.c')
0 files changed, 0 insertions, 0 deletions