linux/arch/x86/entry
Thomas Gleixner eec399dd86 x86/vdso: Move VDSO clocksource state tracking to callback
All architectures which use the generic VDSO code have their own storage
for the VDSO clock mode. That's pointless and just requires duplicate code.

X86 abuses the function which retrieves the architecture specific clock
mode storage to mark the clocksource as used in the VDSO. That's silly
because this is invoked on every tick when the VDSO data is updated.

Move this functionality to the clocksource::enable() callback so it gets
invoked once when the clocksource is installed. This allows to make the
clock mode storage generic.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>  (Hyper-V parts)
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> (VDSO parts)
Acked-by: Juergen Gross <jgross@suse.com> (Xen parts)
Link: https://lkml.kernel.org/r/20200207124402.934519777@linutronix.de
2020-02-17 14:40:22 +01:00
..
syscalls threads-v5.6 2020-01-29 19:38:34 -08:00
vdso x86/vdso: Move VDSO clocksource state tracking to callback 2020-02-17 14:40:22 +01:00
vsyscall y2038: syscall implementation cleanups 2019-12-01 14:00:59 -08:00
calling.h context_tracking: Rename context_tracking_is_enabled() => context_tracking_enabled() 2019-10-29 10:01:12 +01:00
common.c x86/ioperm: Move TSS bitmap update to exit to user work 2019-11-16 11:24:03 +01:00
entry_32.S x86/entry/32: Remove unused 'restore_all_notrace' local label 2019-11-27 10:38:16 +01:00
entry_64_compat.S x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_* 2019-10-18 11:58:33 +02:00
entry_64.S x86/entry/64: Add instruction suffix to SYSRET 2020-01-09 12:33:43 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_32.c syscalls/x86: Use the correct function type for sys_ni_syscall 2019-10-11 12:49:18 +02:00
syscall_64.c syscalls/x86: Use the correct function type for sys_ni_syscall 2019-10-11 12:49:18 +02:00
thunk_32.S x86/asm/entry: Annotate THUNKs 2019-10-18 09:58:59 +02:00
thunk_64.S x86/asm/entry: Annotate THUNKs 2019-10-18 09:58:59 +02:00