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f84a935db4
When returning coarse realtime values from clock_gettime, we must still check the sequence counter to ensure that the kernel does not update the vdso datapage whilst we are loading the coarse timespec as this could potentially result in time appearing to go backwards. This patch delays the coarse realtime check until after we have loaded successfully from the vdso datapage. This does mean that we always load the wtm timespec, but conditionalising the load and adding an extra sequence test is unlikely to buy us anything other than messy code, particularly as the sequence test implies a read barrier. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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| .. | ||
| vdso | ||
| .gitignore | ||
| arm64ksyms.c | ||
| asm-offsets.c | ||
| cputable.c | ||
| debug-monitors.c | ||
| entry-fpsimd.S | ||
| entry.S | ||
| fpsimd.c | ||
| head.S | ||
| hw_breakpoint.c | ||
| io.c | ||
| irq.c | ||
| kuser32.S | ||
| Makefile | ||
| module.c | ||
| perf_event.c | ||
| process.c | ||
| ptrace.c | ||
| setup.c | ||
| signal32.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| sys32.S | ||
| sys_compat.c | ||
| sys.c | ||
| time.c | ||
| traps.c | ||
| vdso.c | ||
| vmlinux.lds.S | ||