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| author | K. Y. Srinivasan | 2011-08-27 20:31:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2011-08-29 20:05:30 +0200 |
| commit | 95ff7cde91f5513ebc95ccf0cd482f07dc3454e4 (patch) | |
| tree | 4d549735e883230f008ec2302aac23b7ba100a48 /drivers/staging/hv/hv_util.c | |
| parent | Staging: hv: util: Forcefully shutdown when shutdown is requested (diff) | |
| download | kernel-qcow2-linux-95ff7cde91f5513ebc95ccf0cd482f07dc3454e4.tar.gz kernel-qcow2-linux-95ff7cde91f5513ebc95ccf0cd482f07dc3454e4.tar.xz kernel-qcow2-linux-95ff7cde91f5513ebc95ccf0cd482f07dc3454e4.zip | |
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>
Diffstat (limited to 'drivers/staging/hv/hv_util.c')
| -rw-r--r-- | drivers/staging/hv/hv_util.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/staging/hv/hv_util.c b/drivers/staging/hv/hv_util.c index 876d44a8a861..e29a2a23eda5 100644 --- a/drivers/staging/hv/hv_util.c +++ b/drivers/staging/hv/hv_util.c @@ -107,6 +107,24 @@ static inline void do_adj_guesttime(u64 hosttime) } /* + * 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. * * ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM. @@ -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); } /* |