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vdso: Rework struct vdso_time_data and introduce struct vdso_clock

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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 an array of VDSO clocks.

Now that all preparatory changes are in place:

Split the clock related struct members into a separate struct
vdso_clock. Make sure all users are aware, that vdso_time_data is no longer
initialized as an array and vdso_clock is now the array inside
vdso_data. Remove the vdso_clock define, which mapped it to vdso_time_data
for the transition.

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>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-19-c1b5c69a166f@linutronix.de
This commit is contained in:
Anna-Maria Behnsen
2025-03-03 12:11:21 +01:00
committed by Thomas Gleixner
parent 97a5a90ca2
commit 886653e366
10 changed files with 57 additions and 54 deletions
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2
kernel/time/namespace.c
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@@ -237,7 +237,7 @@ static void timens_set_vvar_page(struct task_struct *task,
ns->frozen_offsets = true;
vdata = page_address(ns->vvar_page);
vc = vdata;
vc = vdata->clock_data;
for (i = 0; i < CS_BASES; i++)
timens_setup_vdso_clock_data(&vc[i], ns);