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1f68ce2a02
Add an Intel specific hook into machine_check_poll() to keep track of per-CPU, per-bank corrected error logs (with a stub for the CONFIG_MCE_INTEL=n case). When a storm is observed the rate of interrupts is reduced by setting a large threshold value for this bank in IA32_MCi_CTL2. This bank is added to the bitmap of banks for this CPU to poll. The polling rate is increased to once per second. When a storm ends reset the threshold in IA32_MCi_CTL2 back to 1, remove the bank from the bitmap for polling, and change the polling rate back to the default. If a CPU with banks in storm mode is taken offline, the new CPU that inherits ownership of those banks takes over management of storm(s) in the inherited bank(s). The cmci_discover() function was already very large. These changes pushed it well over the top. Refactor with three helper functions to bring it back under control. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20231115195450.12963-4-tony.luck@intel.com |
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| .. | ||
| mce | ||
| microcode | ||
| mtrr | ||
| resctrl | ||
| sgx | ||
| .gitignore | ||
| acrn.c | ||
| amd.c | ||
| aperfmperf.c | ||
| bugs.c | ||
| cacheinfo.c | ||
| centaur.c | ||
| common.c | ||
| cpu.h | ||
| cpuid-deps.c | ||
| cyrix.c | ||
| debugfs.c | ||
| feat_ctl.c | ||
| hygon.c | ||
| hypervisor.c | ||
| intel_epb.c | ||
| intel_pconfig.c | ||
| intel.c | ||
| Makefile | ||
| match.c | ||
| mkcapflags.sh | ||
| mshyperv.c | ||
| perfctr-watchdog.c | ||
| powerflags.c | ||
| proc.c | ||
| rdrand.c | ||
| scattered.c | ||
| topology.c | ||
| transmeta.c | ||
| tsx.c | ||
| umc.c | ||
| umwait.c | ||
| vmware.c | ||
| vortex.c | ||
| zhaoxin.c | ||