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vdso: Remove remnants of architecture-specific time storage

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All users of the time releated parts of the vDSO are now using the generic
storage implementation. Remove the therefore unnecessary compatibility
accessor functions and symbols.

Co-developed-by: Nam Cao <namcao@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/20250204-vdso-store-rng-v3-18-13a4669dfc8c@linutronix.de
This commit is contained in:
Thomas Weißschuh
2025-02-04 13:05:50 +01:00
committed by Thomas Gleixner
parent 998a8a2608
commit ac1a42f4e4
8 changed files with 53 additions and 89 deletions
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12
kernel/time/namespace.c
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@@ -165,18 +165,18 @@ static struct timens_offset offset_from_ts(struct timespec64 off)
* HVCLOCK
* VVAR
*
* The check for vdso_data->clock_mode is in the unlikely path of
* The check for vdso_time_data->clock_mode is in the unlikely path of
* the seq begin magic. So for the non-timens case most of the time
* 'seq' is even, so the branch is not taken.
*
* If 'seq' is odd, i.e. a concurrent update is in progress, the extra check
* for vdso_data->clock_mode is a non-issue. The task is spin waiting for the
* for vdso_time_data->clock_mode is a non-issue. The task is spin waiting for the
* update to finish and for 'seq' to become even anyway.
*
* Timens page has vdso_data->clock_mode set to VDSO_CLOCKMODE_TIMENS which
* Timens page has vdso_time_data->clock_mode set to VDSO_CLOCKMODE_TIMENS which
* enforces the time namespace handling path.
*/
static void timens_setup_vdso_data(struct vdso_data *vdata,
static void timens_setup_vdso_data(struct vdso_time_data *vdata,
struct time_namespace *ns)
{
struct timens_offset *offset = vdata->offset;
@@ -219,7 +219,7 @@ static DEFINE_MUTEX(offset_lock);
static void timens_set_vvar_page(struct task_struct *task,
struct time_namespace *ns)
{
struct vdso_data *vdata;
struct vdso_time_data *vdata;
unsigned int i;
if (ns == &init_time_ns)
@@ -235,7 +235,7 @@ static void timens_set_vvar_page(struct task_struct *task,
goto out;
ns->frozen_offsets = true;
vdata = arch_get_vdso_data(page_address(ns->vvar_page));
vdata = page_address(ns->vvar_page);
for (i = 0; i < CS_BASES; i++)
timens_setup_vdso_data(&vdata[i], ns);