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authorAndrei Vagin <avagin@openvz.org>2019-11-12 01:27:00 +0000
committerThomas Gleixner <tglx@linutronix.de>2020-01-14 12:20:52 +0100
commit5a590f35add93c2bdf3ed83eee73111021679562 (patch)
tree259e9f5d400065e26a4a3b6f0a2ac98b39c9e096 /kernel/time/posix-timers.c
parent198fa445d5c4c1a1c6c1d39f962559f8d008e79d (diff)
posix-clocks: Wire up clock_gettime() with timens offsets
Adjust monotonic and boottime clocks with per-timens offsets. As the result a process inside time namespace will see timers and clocks corrected to offsets that were set when the namespace was created Note that applications usually go through vDSO to get time, which is not yet adjusted. Further changes will complete time namespace virtualisation with vDSO support. Co-developed-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20191112012724.250792-12-dima@arista.com
Diffstat (limited to 'kernel/time/posix-timers.c')
-rw-r--r--kernel/time/posix-timers.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index fe1de4f71ace..d26b915b227a 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -30,6 +30,7 @@
#include <linux/hashtable.h>
#include <linux/compat.h>
#include <linux/nospec.h>
+#include <linux/time_namespace.h>
#include "timekeeping.h"
#include "posix-timers.h"
@@ -195,6 +196,7 @@ static int posix_clock_realtime_adj(const clockid_t which_clock,
static int posix_get_monotonic_timespec(clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_ts64(tp);
+ timens_add_monotonic(tp);
return 0;
}
@@ -209,6 +211,7 @@ static ktime_t posix_get_monotonic_ktime(clockid_t which_clock)
static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_raw_ts64(tp);
+ timens_add_monotonic(tp);
return 0;
}
@@ -223,6 +226,7 @@ static int posix_get_monotonic_coarse(clockid_t which_clock,
struct timespec64 *tp)
{
ktime_get_coarse_ts64(tp);
+ timens_add_monotonic(tp);
return 0;
}
@@ -235,6 +239,7 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec64 *
static int posix_get_boottime_timespec(const clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_boottime_ts64(tp);
+ timens_add_boottime(tp);
return 0;
}