diff options
author | 2017-03-08 23:13:28 -0800 | |
---|---|---|
committer | 2017-03-08 23:36:15 -0800 | |
commit | 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch) | |
tree | d65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/drivers/hv/hv_kvp.c | |
parent | c189ccac5702322ed843fe17057035b7222a59b6 (diff) |
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e
where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt
c) One patch has been backported thus revert the patch before applying.
filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run
Upstream status: backport
Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/drivers/hv/hv_kvp.c')
-rw-r--r-- | kernel/drivers/hv/hv_kvp.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/kernel/drivers/hv/hv_kvp.c b/kernel/drivers/hv/hv_kvp.c index 74c38a9f3..2a3420c4c 100644 --- a/kernel/drivers/hv/hv_kvp.c +++ b/kernel/drivers/hv/hv_kvp.c @@ -66,7 +66,6 @@ static struct { struct hv_kvp_msg *kvp_msg; /* current message */ struct vmbus_channel *recv_channel; /* chn we got the request */ u64 recv_req_id; /* request ID. */ - void *kvp_context; /* for the channel callback */ } kvp_transaction; /* @@ -94,6 +93,13 @@ static struct hvutil_transport *hvt; */ #define HV_DRV_VERSION "3.1" +static void kvp_poll_wrapper(void *channel) +{ + /* Transaction is finished, reset the state here to avoid races. */ + kvp_transaction.state = HVUTIL_READY; + hv_kvp_onchannelcallback(channel); +} + static void kvp_register(int reg_value) { @@ -121,12 +127,7 @@ static void kvp_timeout_func(struct work_struct *dummy) */ kvp_respond_to_host(NULL, HV_E_FAIL); - /* Transaction is finished, reset the state. */ - if (kvp_transaction.state > HVUTIL_READY) - kvp_transaction.state = HVUTIL_READY; - - hv_poll_channel(kvp_transaction.kvp_context, - hv_kvp_onchannelcallback); + hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper); } static int kvp_handle_handshake(struct hv_kvp_msg *msg) @@ -218,9 +219,7 @@ static int kvp_on_msg(void *msg, int len) */ if (cancel_delayed_work_sync(&kvp_timeout_work)) { kvp_respond_to_host(message, error); - kvp_transaction.state = HVUTIL_READY; - hv_poll_channel(kvp_transaction.kvp_context, - hv_kvp_onchannelcallback); + hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper); } return 0; @@ -596,15 +595,8 @@ void hv_kvp_onchannelcallback(void *context) int util_fw_version; int kvp_srv_version; - if (kvp_transaction.state > HVUTIL_READY) { - /* - * We will defer processing this callback once - * the current transaction is complete. - */ - kvp_transaction.kvp_context = context; + if (kvp_transaction.state > HVUTIL_READY) return; - } - kvp_transaction.kvp_context = NULL; vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 4, &recvlen, &requestid); @@ -668,7 +660,8 @@ void hv_kvp_onchannelcallback(void *context) * user-mode not responding. */ schedule_work(&kvp_sendkey_work); - schedule_delayed_work(&kvp_timeout_work, 5*HZ); + schedule_delayed_work(&kvp_timeout_work, + HV_UTIL_TIMEOUT * HZ); return; |