diff mbox series

[11/19] vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock

Message ID 20250303-vdso-clock-v1-11-c1b5c69a166f@linutronix.de (mailing list archive)
State New
Headers show
Series vdso: Rework struct vdso_time_data and introduce struct vdso_clock | expand

Commit Message

Thomas Weißschuh March 3, 2025, 11:11 a.m. UTC 
From: Anna-Maria Behnsen <anna-maria@linutronix.de>

To support multiple PTP clocks, the VDSO data structure needs to be
reworked. All clock specific data will end up in struct vdso_clock and in
struct vdso_time_data there will be array of it. By now, vdso_clock is
simply a define which maps vdso_clock to vdso_time_data.

To prepare for the rework of the data structures, replace the struct
vdso_time_data pointer argument of the helper functions with struct
vdso_clock pointer if applicable.

No functional change.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 lib/vdso/gettimeofday.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 03fa0393645ac0f5ee465ddc19d84b330913da65..c6ff6934558658f9e280d5b84cfb034f4828893d 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -17,12 +17,12 @@ 
 #endif
 
 #ifdef CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT
-static __always_inline bool vdso_delta_ok(const struct vdso_time_data *vd, u64 delta)
+static __always_inline bool vdso_delta_ok(const struct vdso_clock *vc, u64 delta)
 {
-	return delta < vd->max_cycles;
+	return delta < vc->max_cycles;
 }
 #else
-static __always_inline bool vdso_delta_ok(const struct vdso_time_data *vd, u64 delta)
+static __always_inline bool vdso_delta_ok(const struct vdso_clock *vc, u64 delta)
 {
 	return true;
 }
@@ -39,14 +39,14 @@  static __always_inline u64 vdso_shift_ns(u64 ns, u32 shift)
  * Default implementation which works for all sane clocksources. That
  * obviously excludes x86/TSC.
  */
-static __always_inline u64 vdso_calc_ns(const struct vdso_time_data *vd, u64 cycles, u64 base)
+static __always_inline u64 vdso_calc_ns(const struct vdso_clock *vc, u64 cycles, u64 base)
 {
-	u64 delta = (cycles - vd->cycle_last) & VDSO_DELTA_MASK(vd);
+	u64 delta = (cycles - vc->cycle_last) & VDSO_DELTA_MASK(vc);
 
-	if (likely(vdso_delta_ok(vd, delta)))
-		return vdso_shift_ns((delta * vd->mult) + base, vd->shift);
+	if (likely(vdso_delta_ok(vc, delta)))
+		return vdso_shift_ns((delta * vc->mult) + base, vc->shift);
 
-	return mul_u64_u32_add_u64_shr(delta, vd->mult, base, vd->shift);
+	return mul_u64_u32_add_u64_shr(delta, vc->mult, base, vc->shift);
 }
 #endif /* vdso_calc_ns */
 
@@ -58,9 +58,9 @@  static inline bool __arch_vdso_hres_capable(void)
 #endif
 
 #ifndef vdso_clocksource_ok
-static inline bool vdso_clocksource_ok(const struct vdso_time_data *vd)
+static inline bool vdso_clocksource_ok(const struct vdso_clock *vc)
 {
-	return vd->clock_mode != VDSO_CLOCKMODE_NONE;
+	return vc->clock_mode != VDSO_CLOCKMODE_NONE;
 }
 #endif