tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
xtensa: count software page fault perf events
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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arch/xtensa/mm/fault.c
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arch/xtensa/mm/fault.c
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/hardirq.h>
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#include <linux/perf_event.h>
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#include <linux/uaccess.h>
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#include <asm/mmu_context.h>
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#include <asm/cacheflush.h>
···
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}
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up_read(&mm->mmap_sem);
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perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
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if (flags & VM_FAULT_MAJOR)
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perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
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else if (flags & VM_FAULT_MINOR)
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perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
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return;
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/* Something tried to access memory that isn't in our memory map..