| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __ASM_VDSO_VSYSCALL_H |
| #define __ASM_VDSO_VSYSCALL_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <linux/hrtimer.h> |
| #include <linux/timekeeper_internal.h> |
| #include <vdso/datapage.h> |
| #include <asm/vgtod.h> |
| #include <asm/vvar.h> |
| |
| int vclocks_used __read_mostly; |
| |
| DEFINE_VVAR(struct vdso_data, _vdso_data); |
| /* |
| * Update the vDSO data page to keep in sync with kernel timekeeping. |
| */ |
| static __always_inline |
| struct vdso_data *__x86_get_k_vdso_data(void) |
| { |
| return _vdso_data; |
| } |
| #define __arch_get_k_vdso_data __x86_get_k_vdso_data |
| |
| static __always_inline |
| int __x86_get_clock_mode(struct timekeeper *tk) |
| { |
| int vclock_mode = tk->tkr_mono.clock->archdata.vclock_mode; |
| |
| /* Mark the new vclock used. */ |
| BUILD_BUG_ON(VCLOCK_MAX >= 32); |
| WRITE_ONCE(vclocks_used, READ_ONCE(vclocks_used) | (1 << vclock_mode)); |
| |
| return vclock_mode; |
| } |
| #define __arch_get_clock_mode __x86_get_clock_mode |
| |
| /* The asm-generic header needs to be included after the definitions above */ |
| #include <asm-generic/vdso/vsyscall.h> |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* __ASM_VDSO_VSYSCALL_H */ |
