tracing: add trace event for memory-failure
RAS user space tools like rasdaemon which base on trace event, could
receive mce error event, but no memory recovery result event. So, I want
to add this event to make this scenario complete.
This patch add a event at ras group for memory-failure.
The output like below:
# tracer: nop
#
# entries-in-buffer/entries-written: 2/2 #P:24
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
mce-inject-13150 [001] .... 277.019359: memory_failure_event: pfn 0x19869: recovery action for free buddy page: Delayed
[xiexiuqi@huawei.com: fix build error]
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Xie XiuQi
Linus Torvalds
parent
cc3e2af42e
commit
97f0b13452
3 changed files with 89 additions and 0 deletions
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@ -11,6 +11,7 @@
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#include <linux/pci.h>
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#include <linux/aer.h>
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#include <linux/cper.h>
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#include <linux/mm.h>
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/*
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* MCE Extended Error Log trace event
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@ -232,6 +233,90 @@ TRACE_EVENT(aer_event,
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__print_flags(__entry->status, "|", aer_uncorrectable_errors))
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);
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/*
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* memory-failure recovery action result event
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*
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* unsigned long pfn - Page Frame Number of the corrupted page
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* int type - Page types of the corrupted page
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* int result - Result of recovery action
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*/
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#ifdef CONFIG_MEMORY_FAILURE
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#define MF_ACTION_RESULT \
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EM ( MF_IGNORED, "Ignored" ) \
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EM ( MF_FAILED, "Failed" ) \
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EM ( MF_DELAYED, "Delayed" ) \
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EMe ( MF_RECOVERED, "Recovered" )
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#define MF_PAGE_TYPE \
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EM ( MF_MSG_KERNEL, "reserved kernel page" ) \
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EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" ) \
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EM ( MF_MSG_SLAB, "kernel slab page" ) \
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EM ( MF_MSG_DIFFERENT_COMPOUND, "different compound page after locking" ) \
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EM ( MF_MSG_POISONED_HUGE, "huge page already hardware poisoned" ) \
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EM ( MF_MSG_HUGE, "huge page" ) \
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EM ( MF_MSG_FREE_HUGE, "free huge page" ) \
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EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \
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EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \
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EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \
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EM ( MF_MSG_DIRTY_MLOCKED_LRU, "dirty mlocked LRU page" ) \
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EM ( MF_MSG_CLEAN_MLOCKED_LRU, "clean mlocked LRU page" ) \
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EM ( MF_MSG_DIRTY_UNEVICTABLE_LRU, "dirty unevictable LRU page" ) \
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EM ( MF_MSG_CLEAN_UNEVICTABLE_LRU, "clean unevictable LRU page" ) \
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EM ( MF_MSG_DIRTY_LRU, "dirty LRU page" ) \
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EM ( MF_MSG_CLEAN_LRU, "clean LRU page" ) \
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EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \
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EM ( MF_MSG_BUDDY, "free buddy page" ) \
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EM ( MF_MSG_BUDDY_2ND, "free buddy page (2nd try)" ) \
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EMe ( MF_MSG_UNKNOWN, "unknown page" )
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/*
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* First define the enums in MM_ACTION_RESULT to be exported to userspace
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* via TRACE_DEFINE_ENUM().
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*/
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#undef EM
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#undef EMe
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#define EM(a, b) TRACE_DEFINE_ENUM(a);
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#define EMe(a, b) TRACE_DEFINE_ENUM(a);
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MF_ACTION_RESULT
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MF_PAGE_TYPE
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/*
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* Now redefine the EM() and EMe() macros to map the enums to the strings
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* that will be printed in the output.
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*/
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#undef EM
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#undef EMe
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#define EM(a, b) { a, b },
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#define EMe(a, b) { a, b }
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TRACE_EVENT(memory_failure_event,
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TP_PROTO(unsigned long pfn,
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int type,
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int result),
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TP_ARGS(pfn, type, result),
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TP_STRUCT__entry(
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__field(unsigned long, pfn)
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__field(int, type)
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__field(int, result)
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),
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TP_fast_assign(
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__entry->pfn = pfn;
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__entry->type = type;
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__entry->result = result;
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),
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TP_printk("pfn %#lx: recovery action for %s: %s",
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__entry->pfn,
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__print_symbolic(__entry->type, MF_PAGE_TYPE),
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__print_symbolic(__entry->result, MF_ACTION_RESULT)
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)
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);
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#endif /* CONFIG_MEMORY_FAILURE */
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#endif /* _TRACE_HW_EVENT_MC_H */
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/* This part must be outside protection */
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@ -368,6 +368,7 @@ config MEMORY_FAILURE
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depends on ARCH_SUPPORTS_MEMORY_FAILURE
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bool "Enable recovery from hardware memory errors"
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select MEMORY_ISOLATION
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select RAS
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help
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Enables code to recover from some memory failures on systems
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with MCA recovery. This allows a system to continue running
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@ -57,6 +57,7 @@
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#include <linux/mm_inline.h>
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#include <linux/kfifo.h>
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#include "internal.h"
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#include "ras/ras_event.h"
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int sysctl_memory_failure_early_kill __read_mostly = 0;
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@ -855,6 +856,8 @@ static struct page_state {
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static void action_result(unsigned long pfn, enum mf_action_page_type type,
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enum mf_result result)
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{
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trace_memory_failure_event(pfn, type, result);
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pr_err("MCE %#lx: recovery action for %s: %s\n",
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pfn, action_page_types[type], action_name[result]);
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}
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