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05/09/2024 07:14:12 AM
rwxr-xr-x
📄
Kbuild
568 bytes
01/28/2018 09:20:33 PM
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arch_gicv3.h
9.05 KB
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arch_timer.h
2.48 KB
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arm-cci.h
1.05 KB
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asm-offsets.h
35 bytes
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assembler.h
10.46 KB
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atomic.h
13.22 KB
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auxvec.h
29 bytes
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bL_switcher.h
2.28 KB
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barrier.h
2.84 KB
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bitops.h
8.62 KB
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bitrev.h
451 bytes
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bug.h
2.46 KB
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bugs.h
546 bytes
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cache.h
813 bytes
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cacheflush.h
15.54 KB
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cachetype.h
2.71 KB
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checksum.h
3.71 KB
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clocksource.h
153 bytes
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cmpxchg.h
6.14 KB
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compiler.h
978 bytes
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cp15.h
3.84 KB
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cpu.h
533 bytes
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cpufeature.h
1.4 KB
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cpuidle.h
1.33 KB
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cputype.h
8.42 KB
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cti.h
3.62 KB
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dcc.h
1.01 KB
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delay.h
2.83 KB
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device.h
771 bytes
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div64.h
3.17 KB
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dma-contiguous.h
265 bytes
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dma-iommu.h
1.01 KB
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dma-mapping.h
7.44 KB
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dma.h
4.18 KB
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dmi.h
528 bytes
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domain.h
3.65 KB
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ecard.h
5.98 KB
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edac.h
1.51 KB
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efi.h
3.04 KB
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elf.h
4.52 KB
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entry-macro-multi.S
726 bytes
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exception.h
571 bytes
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fb.h
375 bytes
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fiq.h
1.36 KB
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firmware.h
1.82 KB
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fixmap.h
1.84 KB
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flat.h
915 bytes
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floppy.h
3.61 KB
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fncpy.h
3.08 KB
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fpstate.h
1.73 KB
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ftrace.h
1.92 KB
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futex.h
4.24 KB
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glue-cache.h
3.51 KB
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glue-df.h
2.2 KB
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glue-pf.h
1.12 KB
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glue-proc.h
4.46 KB
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glue.h
759 bytes
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gpio.h
693 bytes
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hardirq.h
803 bytes
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hardware
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05/09/2024 07:14:16 AM
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highmem.h
2.15 KB
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hugetlb-3level.h
2.03 KB
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hugetlb.h
1.78 KB
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hw_breakpoint.h
3.53 KB
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hw_irq.h
349 bytes
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hwcap.h
378 bytes
01/28/2018 09:20:33 PM
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hypervisor.h
140 bytes
01/28/2018 09:20:33 PM
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ide.h
566 bytes
01/28/2018 09:20:33 PM
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idmap.h
355 bytes
01/28/2018 09:20:33 PM
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insn.h
636 bytes
06/16/2023 05:32:39 PM
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io.h
15.96 KB
01/28/2018 09:20:33 PM
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irq.h
1015 bytes
06/16/2023 05:32:39 PM
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irq_work.h
234 bytes
01/28/2018 09:20:33 PM
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irqflags.h
3.88 KB
01/28/2018 09:20:33 PM
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jump_label.h
1009 bytes
01/28/2018 09:20:33 PM
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kexec-internal.h
272 bytes
06/16/2023 05:32:39 PM
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kexec.h
2.3 KB
01/28/2018 09:20:33 PM
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kgdb.h
2.72 KB
06/16/2023 05:32:39 PM
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kmap_types.h
190 bytes
01/28/2018 09:20:33 PM
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kprobes.h
2.65 KB
06/16/2023 05:32:39 PM
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kvm_arm.h
7.6 KB
01/28/2018 09:20:33 PM
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kvm_asm.h
2.84 KB
06/16/2023 05:32:39 PM
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kvm_coproc.h
1.99 KB
01/28/2018 09:20:33 PM
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kvm_emulate.h
7.84 KB
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kvm_host.h
10.31 KB
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kvm_hyp.h
4.49 KB
01/28/2018 09:20:33 PM
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kvm_mmio.h
1.34 KB
06/16/2023 05:32:39 PM
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kvm_mmu.h
7.27 KB
06/16/2023 05:32:39 PM
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limits.h
166 bytes
01/28/2018 09:20:33 PM
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linkage.h
216 bytes
01/28/2018 09:20:33 PM
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📁
mach
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05/09/2024 07:14:16 AM
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mc146818rtc.h
720 bytes
01/28/2018 09:20:33 PM
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mcpm.h
11.92 KB
01/28/2018 09:20:33 PM
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mcs_spinlock.h
570 bytes
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memblock.h
248 bytes
01/28/2018 09:20:33 PM
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memory.h
9.95 KB
06/16/2023 05:32:39 PM
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mmu.h
953 bytes
01/28/2018 09:20:33 PM
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mmu_context.h
3.94 KB
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module.h
1.57 KB
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mpu.h
2.15 KB
01/28/2018 09:20:33 PM
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mtd-xip.h
666 bytes
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neon.h
1.16 KB
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nwflash.h
252 bytes
01/28/2018 09:20:33 PM
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opcodes-sec.h
742 bytes
01/28/2018 09:20:33 PM
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opcodes-virt.h
1.32 KB
01/28/2018 09:20:33 PM
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opcodes.h
8.07 KB
01/28/2018 09:20:33 PM
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outercache.h
3.78 KB
01/28/2018 09:20:33 PM
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page-nommu.h
957 bytes
01/28/2018 09:20:33 PM
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page.h
3.61 KB
01/28/2018 09:20:33 PM
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paravirt.h
454 bytes
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patch.h
438 bytes
01/28/2018 09:20:33 PM
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pci.h
956 bytes
01/28/2018 09:20:33 PM
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percpu.h
1.56 KB
06/16/2023 05:32:39 PM
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perf_event.h
857 bytes
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pgalloc.h
3.79 KB
01/28/2018 09:20:33 PM
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pgtable-2level-hwdef.h
3.45 KB
01/28/2018 09:20:33 PM
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pgtable-2level-types.h
1.84 KB
01/28/2018 09:20:33 PM
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pgtable-2level.h
8.51 KB
06/16/2023 05:32:39 PM
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pgtable-3level-hwdef.h
3.95 KB
01/28/2018 09:20:33 PM
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pgtable-3level-types.h
1.89 KB
01/28/2018 09:20:33 PM
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pgtable-3level.h
9.54 KB
06/16/2023 05:32:39 PM
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pgtable-hwdef.h
467 bytes
01/28/2018 09:20:33 PM
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pgtable-nommu.h
2.51 KB
06/16/2023 05:32:39 PM
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pgtable.h
11.71 KB
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probes.h
1.73 KB
01/28/2018 09:20:33 PM
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proc-fns.h
4.79 KB
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processor.h
3.4 KB
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procinfo.h
1.27 KB
01/28/2018 09:20:33 PM
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prom.h
715 bytes
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psci.h
771 bytes
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ptrace.h
4.89 KB
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sections.h
189 bytes
01/28/2018 09:20:33 PM
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set_memory.h
1.04 KB
01/28/2018 09:20:33 PM
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setup.h
934 bytes
01/28/2018 09:20:33 PM
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shmparam.h
419 bytes
01/28/2018 09:20:33 PM
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signal.h
500 bytes
01/28/2018 09:20:33 PM
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smp.h
3.1 KB
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smp_plat.h
2.48 KB
01/28/2018 09:20:33 PM
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smp_scu.h
1.32 KB
01/28/2018 09:20:33 PM
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smp_twd.h
908 bytes
01/28/2018 09:20:33 PM
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sparsemem.h
716 bytes
01/28/2018 09:20:33 PM
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spectre.h
906 bytes
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spinlock.h
5.49 KB
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spinlock_types.h
541 bytes
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stackprotector.h
1.09 KB
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stacktrace.h
742 bytes
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stage2_pgtable.h
2.12 KB
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string.h
1.43 KB
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suspend.h
369 bytes
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swab.h
1005 bytes
01/28/2018 09:20:33 PM
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switch_to.h
1.03 KB
01/28/2018 09:20:33 PM
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sync_bitops.h
1.03 KB
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syscall.h
2.48 KB
01/28/2018 09:20:33 PM
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system_info.h
763 bytes
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system_misc.h
1.14 KB
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tcm.h
937 bytes
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therm.h
655 bytes
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thread_info.h
5.2 KB
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thread_notify.h
1.2 KB
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timex.h
577 bytes
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tlb.h
7.37 KB
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tlbflush.h
17.88 KB
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tls.h
3.09 KB
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topology.h
1.18 KB
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traps.h
1.17 KB
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trusted_foundations.h
2.29 KB
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uaccess-asm.h
2.83 KB
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uaccess.h
16.22 KB
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ucontext.h
2.98 KB
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unaligned.h
846 bytes
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unified.h
1.61 KB
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unistd.h
1.68 KB
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unwind.h
1.71 KB
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uprobes.h
1.07 KB
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user.h
4.2 KB
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v7m.h
2.93 KB
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vdso.h
507 bytes
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vdso_datapage.h
1.69 KB
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vfp.h
2.86 KB
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vfpmacros.h
2.1 KB
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vga.h
305 bytes
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virt.h
2.9 KB
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word-at-a-time.h
2.08 KB
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xen
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xor.h
5.22 KB
01/28/2018 09:20:33 PM
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Editing: futex.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_ARM_FUTEX_H #define _ASM_ARM_FUTEX_H #ifdef __KERNEL__ #include <linux/futex.h> #include <linux/uaccess.h> #include <asm/errno.h> #define __futex_atomic_ex_table(err_reg) \ "3:\n" \ " .pushsection __ex_table,\"a\"\n" \ " .align 3\n" \ " .long 1b, 4f, 2b, 4f\n" \ " .popsection\n" \ " .pushsection .text.fixup,\"ax\"\n" \ " .align 2\n" \ "4: mov %0, " err_reg "\n" \ " b 3b\n" \ " .popsection" #ifdef CONFIG_SMP #define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \ ({ \ unsigned int __ua_flags; \ smp_mb(); \ prefetchw(uaddr); \ __ua_flags = uaccess_save_and_enable(); \ __asm__ __volatile__( \ "1: ldrex %1, [%3]\n" \ " " insn "\n" \ "2: strex %2, %0, [%3]\n" \ " teq %2, #0\n" \ " bne 1b\n" \ " mov %0, #0\n" \ __futex_atomic_ex_table("%5") \ : "=&r" (ret), "=&r" (oldval), "=&r" (tmp) \ : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \ : "cc", "memory"); \ uaccess_restore(__ua_flags); \ }) static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval) { unsigned int __ua_flags; int ret; u32 val; if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; smp_mb(); /* Prefetching cannot fault */ prefetchw(uaddr); __ua_flags = uaccess_save_and_enable(); __asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n" "1: ldrex %1, [%4]\n" " teq %1, %2\n" " ite eq @ explicit IT needed for the 2b label\n" "2: strexeq %0, %3, [%4]\n" " movne %0, #0\n" " teq %0, #0\n" " bne 1b\n" __futex_atomic_ex_table("%5") : "=&r" (ret), "=&r" (val) : "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT) : "cc", "memory"); uaccess_restore(__ua_flags); smp_mb(); *uval = val; return ret; } #else /* !SMP, we can work around lack of atomic ops by disabling preemption */ #include <linux/preempt.h> #include <asm/domain.h> #define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \ ({ \ unsigned int __ua_flags = uaccess_save_and_enable(); \ __asm__ __volatile__( \ "1: " TUSER(ldr) " %1, [%3]\n" \ " " insn "\n" \ "2: " TUSER(str) " %0, [%3]\n" \ " mov %0, #0\n" \ __futex_atomic_ex_table("%5") \ : "=&r" (ret), "=&r" (oldval), "=&r" (tmp) \ : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \ : "cc", "memory"); \ uaccess_restore(__ua_flags); \ }) static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval) { unsigned int __ua_flags; int ret = 0; u32 val; if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; preempt_disable(); __ua_flags = uaccess_save_and_enable(); __asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n" "1: " TUSER(ldr) " %1, [%4]\n" " teq %1, %2\n" " it eq @ explicit IT needed for the 2b label\n" "2: " TUSER(streq) " %3, [%4]\n" __futex_atomic_ex_table("%5") : "+r" (ret), "=&r" (val) : "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT) : "cc", "memory"); uaccess_restore(__ua_flags); *uval = val; preempt_enable(); return ret; } #endif /* !SMP */ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr) { int oldval = 0, ret, tmp; #ifndef CONFIG_SMP preempt_disable(); #endif pagefault_disable(); switch (op) { case FUTEX_OP_SET: __futex_atomic_op("mov %0, %4", ret, oldval, tmp, uaddr, oparg); break; case FUTEX_OP_ADD: __futex_atomic_op("add %0, %1, %4", ret, oldval, tmp, uaddr, oparg); break; case FUTEX_OP_OR: __futex_atomic_op("orr %0, %1, %4", ret, oldval, tmp, uaddr, oparg); break; case FUTEX_OP_ANDN: __futex_atomic_op("and %0, %1, %4", ret, oldval, tmp, uaddr, ~oparg); break; case FUTEX_OP_XOR: __futex_atomic_op("eor %0, %1, %4", ret, oldval, tmp, uaddr, oparg); break; default: ret = -ENOSYS; } pagefault_enable(); #ifndef CONFIG_SMP preempt_enable(); #endif /* * Store unconditionally. If ret != 0 the extra store is the least * of the worries but GCC cannot figure out that __futex_atomic_op() * is either setting ret to -EFAULT or storing the old value in * oldval which results in a uninitialized warning at the call site. */ *oval = oldval; return ret; } #endif /* __KERNEL__ */ #endif /* _ASM_ARM_FUTEX_H */