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lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes

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Move the time namespace indicator clock mode to the other ones for
consistency sake.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lkml.kernel.org/r/20200207124403.656097274@linutronix.de
This commit is contained in:
Thomas Gleixner
2020-02-07 13:39:01 +01:00
parent c7a18100bd
commit 2d6b01bd88
4 changed files with 17 additions and 13 deletions
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18
lib/vdso/gettimeofday.c
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@@ -116,10 +116,10 @@ static __always_inline int do_hres(const struct vdso_data *vd, clockid_t clk,
do {
/*
* Open coded to handle VCLOCK_TIMENS. Time namespace
* Open coded to handle VDSO_CLOCKMODE_TIMENS. Time namespace
* enabled tasks have a special VVAR page installed which
* has vd->seq set to 1 and vd->clock_mode set to
* VCLOCK_TIMENS. For non time namespace affected tasks
* VDSO_CLOCKMODE_TIMENS. For non time namespace affected tasks
* this does not affect performance because if vd->seq is
* odd, i.e. a concurrent update is in progress the extra
* check for vd->clock_mode is just a few extra
@@ -128,7 +128,7 @@ static __always_inline int do_hres(const struct vdso_data *vd, clockid_t clk,
*/
while (unlikely((seq = READ_ONCE(vd->seq)) & 1)) {
if (IS_ENABLED(CONFIG_TIME_NS) &&
vd->clock_mode == VCLOCK_TIMENS)
vd->clock_mode == VDSO_CLOCKMODE_TIMENS)
return do_hres_timens(vd, clk, ts);
cpu_relax();
}
@@ -200,12 +200,12 @@ static __always_inline int do_coarse(const struct vdso_data *vd, clockid_t clk,
do {
/*
* Open coded to handle VCLOCK_TIMENS. See comment in
* Open coded to handle VDSO_CLOCK_TIMENS. See comment in
* do_hres().
*/
while ((seq = READ_ONCE(vd->seq)) & 1) {
if (IS_ENABLED(CONFIG_TIME_NS) &&
vd->clock_mode == VCLOCK_TIMENS)
vd->clock_mode == VDSO_CLOCKMODE_TIMENS)
return do_coarse_timens(vd, clk, ts);
cpu_relax();
}
@@ -292,7 +292,7 @@ __cvdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
if (unlikely(tz != NULL)) {
if (IS_ENABLED(CONFIG_TIME_NS) &&
vd->clock_mode == VCLOCK_TIMENS)
vd->clock_mode == VDSO_CLOCKMODE_TIMENS)
vd = __arch_get_timens_vdso_data();
tz->tz_minuteswest = vd[CS_HRES_COARSE].tz_minuteswest;
@@ -308,7 +308,8 @@ static __maybe_unused __kernel_old_time_t __cvdso_time(__kernel_old_time_t *time
const struct vdso_data *vd = __arch_get_vdso_data();
__kernel_old_time_t t;
if (IS_ENABLED(CONFIG_TIME_NS) && vd->clock_mode == VCLOCK_TIMENS)
if (IS_ENABLED(CONFIG_TIME_NS) &&
vd->clock_mode == VDSO_CLOCKMODE_TIMENS)
vd = __arch_get_timens_vdso_data();
t = READ_ONCE(vd[CS_HRES_COARSE].basetime[CLOCK_REALTIME].sec);
@@ -332,7 +333,8 @@ int __cvdso_clock_getres_common(clockid_t clock, struct __kernel_timespec *res)
if (unlikely((u32) clock >= MAX_CLOCKS))
return -1;
if (IS_ENABLED(CONFIG_TIME_NS) && vd->clock_mode == VCLOCK_TIMENS)
if (IS_ENABLED(CONFIG_TIME_NS) &&
vd->clock_mode == VDSO_CLOCKMODE_TIMENS)
vd = __arch_get_timens_vdso_data();
/*