diff options
Diffstat (limited to 'include/vdso')
| -rw-r--r-- | include/vdso/datapage.h | 14 | ||||
| -rw-r--r-- | include/vdso/helpers.h | 8 |
2 files changed, 18 insertions, 4 deletions
diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h index 73eb622e7663..5d5c0b8efff2 100644 --- a/include/vdso/datapage.h +++ b/include/vdso/datapage.h @@ -19,6 +19,12 @@ #include <vdso/time32.h> #include <vdso/time64.h> +#ifdef CONFIG_ARM64 +#include <asm/page-def.h> +#else +#include <asm/page.h> +#endif + #ifdef CONFIG_ARCH_HAS_VDSO_DATA #include <asm/vdso/data.h> #else @@ -121,6 +127,14 @@ struct vdso_data { extern struct vdso_data _vdso_data[CS_BASES] __attribute__((visibility("hidden"))); extern struct vdso_data _timens_data[CS_BASES] __attribute__((visibility("hidden"))); +/** + * union vdso_data_store - Generic vDSO data page + */ +union vdso_data_store { + struct vdso_data data[CS_BASES]; + u8 page[PAGE_SIZE]; +}; + /* * The generic vDSO implementation requires that gettimeofday.h * provides: diff --git a/include/vdso/helpers.h b/include/vdso/helpers.h index 9a2af9fca45e..73501149439d 100644 --- a/include/vdso/helpers.h +++ b/include/vdso/helpers.h @@ -30,9 +30,9 @@ static __always_inline u32 vdso_read_retry(const struct vdso_data *vd, static __always_inline void vdso_write_begin(struct vdso_data *vd) { /* - * WRITE_ONCE it is required otherwise the compiler can validly tear + * WRITE_ONCE() is required otherwise the compiler can validly tear * updates to vd[x].seq and it is possible that the value seen by the - * reader it is inconsistent. + * reader is inconsistent. */ WRITE_ONCE(vd[CS_HRES_COARSE].seq, vd[CS_HRES_COARSE].seq + 1); WRITE_ONCE(vd[CS_RAW].seq, vd[CS_RAW].seq + 1); @@ -43,9 +43,9 @@ static __always_inline void vdso_write_end(struct vdso_data *vd) { smp_wmb(); /* - * WRITE_ONCE it is required otherwise the compiler can validly tear + * WRITE_ONCE() is required otherwise the compiler can validly tear * updates to vd[x].seq and it is possible that the value seen by the - * reader it is inconsistent. + * reader is inconsistent. */ WRITE_ONCE(vd[CS_HRES_COARSE].seq, vd[CS_HRES_COARSE].seq + 1); WRITE_ONCE(vd[CS_RAW].seq, vd[CS_RAW].seq + 1); |