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Staging: hv: util: Adjust guest time in a process context 

The current code was adjusting guest time in interrupt context; do this
in process context since we may have to initiate cross-processor
interrupts as part of setting time.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan 2011-08-27 11:31:31 -07:00 committed by Greg Kroah-Hartman
parent ae2a0b42bf
commit 95ff7cde91
1 changed files with 30 additions and 3 deletions
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33
drivers/staging/hv/hv_util.c
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@ -106,6 +106,24 @@ static inline void do_adj_guesttime(u64 hosttime)
do_settimeofday(&host_ts);
}
/*
* Set the host time in a process context.
*/
struct adj_time_work {
struct work_struct work;
u64 host_time;
};
static void hv_set_host_time(struct work_struct *work)
{
struct adj_time_work *wrk;
wrk = container_of(work, struct adj_time_work, work);
do_adj_guesttime(wrk->host_time);
kfree(wrk);
}
/*
* Synchronize time with host after reboot, restore, etc.
*
@ -119,17 +137,26 @@ static inline void do_adj_guesttime(u64 hosttime)
*/
static inline void adj_guesttime(u64 hosttime, u8 flags)
{
struct adj_time_work *wrk;
static s32 scnt = 50;
wrk = kmalloc(sizeof(struct adj_time_work), GFP_ATOMIC);
if (wrk == NULL)
return;
wrk->host_time = hosttime;
if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
do_adj_guesttime(hosttime);
INIT_WORK(&wrk->work, hv_set_host_time);
schedule_work(&wrk->work);
return;
}
if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
scnt--;
do_adj_guesttime(hosttime);
}
INIT_WORK(&wrk->work, hv_set_host_time);
schedule_work(&wrk->work);
} else
kfree(wrk);
}
/*