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The code was only halfarsed converted to the new VSDO update mechanism
and still uses the inaccurate base value which lacks the fractional
part of xtime_nsec. Fix it up.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
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make allyesconfig give the following build error on tile:
tilegx-linux-gcc: error: arch/tile/kernel/vdso/vgettimeofday32.o: No such file or directory
tilegx-linux-objcopy: 'arch/tile/kernel/vdso/vdso32.so.dbg': No such file or directory
In case with CONFIG_MODVERSIONS, cmd_cc_o_c generate .tmp_<file>.o from
<file>.c only. Fix it by execute rule_cc_o_c instead.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Kerry Sheh <ksheh@tilera.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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This change creates the framework for vDSO calls, makes the existing
rt_sigreturn() mechanism use it, and adds a fast gettimeofday().
Now that we need to expose the vDSO address to userspace, we add
AT_SYSINFO_EHDR to the set of aux entries provided to userspace.
(You can disable any extra vDSO support by booting with vdso=0,
but the rt_sigreturn vDSO page will still be provided.)
Note that glibc has supported the tile vDSO since release 2.17.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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