microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

hyperv-next for 5.9 

-----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAl8pNiATHHdlaS5saXVA
 a2VybmVsLm9yZwAKCRB2FHBfkEGgXuoQCACiOoe/FKHAYZDR6fZzwZSNVJueYu1o
 Pnwj00EjeDWM/M4kmF7u0PVv0v8PlP7fi2b0nvGmOeqwFS4n7Xr6mdDO1ZxRDzpd
 QW9ZoLc8OUpg9UU9WlEqj4IqRalwKsZi0eX3P2jGoeQCEXHcRu5AdjkDYk0s/LNq
 GBAtpHEPADu/uhEVMyya1KrY9DXsgybPGbCml1pZpeNLPbph3m2ld1M0aHJXqap9
 1qBykxPgCSkSd270XfUrHCkYariC/g7khnBP0zAkzsgt90uraqKoUNhihN8GFacF
 eZ6oh45LWWUjCNIAzKBiLlrpt7nuOGQszeIZywAuyvkbo0pdlZ+hu1qB
 =FMf5
 -----END PGP SIGNATURE-----

Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - A patch series from Andrea to improve vmbus code

 - Two clean-up patches from Alexander and Randy

* tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  hyperv: hyperv.h: drop a duplicated word
  tools: hv: change http to https in hv_kvp_daemon.c
  Drivers: hv: vmbus: Remove the lock field from the vmbus_channel struct
  scsi: storvsc: Introduce the per-storvsc_device spinlock
  Drivers: hv: vmbus: Remove unnecessary channel->lock critical sections (sc_list updaters)
  Drivers: hv: vmbus: Use channel_mutex in channel_vp_mapping_show()
  Drivers: hv: vmbus: Remove unnecessary channel->lock critical sections (sc_list readers)
  Drivers: hv: vmbus: Replace cpumask_test_cpu(, cpu_online_mask) with cpu_online()
  Drivers: hv: vmbus: Remove the numa_node field from the vmbus_channel struct
  Drivers: hv: vmbus: Remove the target_vp field from the vmbus_channel struct
This commit is contained in:
Linus Torvalds 2020-08-06 09:26:10 -07:00
Родитель 47ec5303d7 7deff7b5b4
Коммит 9ab9bc5115
8 изменённых файлов: 34 добавлений и 68 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

9
drivers/hv/channel.c
Просмотреть файл

@ -18,6 +18,7 @@
#include <linux/uio.h>
#include <linux/interrupt.h>
#include <asm/page.h>
#include <asm/mshyperv.h>
#include "hyperv_vmbus.h"
@ -128,12 +129,8 @@ static int __vmbus_open(struct vmbus_channel *newchannel,
send_pages = newchannel->ringbuffer_send_offset;
recv_pages = newchannel->ringbuffer_pagecount - send_pages;
spin_lock_irqsave(&newchannel->lock, flags);
if (newchannel->state != CHANNEL_OPEN_STATE) {
spin_unlock_irqrestore(&newchannel->lock, flags);
if (newchannel->state != CHANNEL_OPEN_STATE)
return -EINVAL;
}
spin_unlock_irqrestore(&newchannel->lock, flags);
newchannel->state = CHANNEL_OPENING_STATE;
newchannel->onchannel_callback = onchannelcallback;
@ -176,7 +173,7 @@ static int __vmbus_open(struct vmbus_channel *newchannel,
open_msg->child_relid = newchannel->offermsg.child_relid;
open_msg->ringbuffer_gpadlhandle = newchannel->ringbuffer_gpadlhandle;
open_msg->downstream_ringbuffer_pageoffset = newchannel->ringbuffer_send_offset;
open_msg->target_vp = newchannel->target_vp;
open_msg->target_vp = hv_cpu_number_to_vp_number(newchannel->target_cpu);
if (userdatalen)
memcpy(open_msg->userdata, userdata, userdatalen);

31
drivers/hv/channel_mgmt.c
Просмотреть файл

@ -317,7 +317,6 @@ static struct vmbus_channel *alloc_channel(void)
return NULL;
spin_lock_init(&channel->sched_lock);
spin_lock_init(&channel->lock);
init_completion(&channel->rescind_event);
INIT_LIST_HEAD(&channel->sc_list);
@ -400,8 +399,6 @@ static void vmbus_release_relid(u32 relid)
void hv_process_channel_removal(struct vmbus_channel *channel)
{
unsigned long flags;
lockdep_assert_held(&vmbus_connection.channel_mutex);
BUG_ON(!channel->rescind);
@ -422,14 +419,10 @@ void hv_process_channel_removal(struct vmbus_channel *channel)
if (channel->offermsg.child_relid != INVALID_RELID)
vmbus_channel_unmap_relid(channel);
if (channel->primary_channel == NULL) {
if (channel->primary_channel == NULL)
list_del(&channel->listentry);
} else {
struct vmbus_channel *primary_channel = channel->primary_channel;
spin_lock_irqsave(&primary_channel->lock, flags);
else
list_del(&channel->sc_list);
spin_unlock_irqrestore(&primary_channel->lock, flags);
}
/*
* If this is a "perf" channel, updates the hv_numa_map[] masks so that
@ -470,7 +463,6 @@ static void vmbus_add_channel_work(struct work_struct *work)
struct vmbus_channel *newchannel =
container_of(work, struct vmbus_channel, add_channel_work);
struct vmbus_channel *primary_channel = newchannel->primary_channel;
unsigned long flags;
int ret;
/*
@ -531,13 +523,10 @@ err_deq_chan:
*/
newchannel->probe_done = true;
if (primary_channel == NULL) {
if (primary_channel == NULL)
list_del(&newchannel->listentry);
} else {
spin_lock_irqsave(&primary_channel->lock, flags);
else
list_del(&newchannel->sc_list);
spin_unlock_irqrestore(&primary_channel->lock, flags);
}
/* vmbus_process_offer() has mapped the channel. */
vmbus_channel_unmap_relid(newchannel);
@ -557,7 +546,6 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
{
struct vmbus_channel *channel;
struct workqueue_struct *wq;
unsigned long flags;
bool fnew = true;
/*
@ -609,10 +597,10 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
}
}
if (fnew)
if (fnew) {
list_add_tail(&newchannel->listentry,
&vmbus_connection.chn_list);
else {
} else {
/*
* Check to see if this is a valid sub-channel.
*/
@ -630,9 +618,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
* Process the sub-channel.
*/
newchannel->primary_channel = channel;
spin_lock_irqsave(&channel->lock, flags);
list_add_tail(&newchannel->sc_list, &channel->sc_list);
spin_unlock_irqrestore(&channel->lock, flags);
}
vmbus_channel_map_relid(newchannel);
@ -702,10 +688,7 @@ static void init_vp_index(struct vmbus_channel *channel)
* In case alloc_cpumask_var() fails, bind it to
* VMBUS_CONNECT_CPU.
*/
channel->numa_node = cpu_to_node(VMBUS_CONNECT_CPU);
channel->target_cpu = VMBUS_CONNECT_CPU;
channel->target_vp =
hv_cpu_number_to_vp_number(VMBUS_CONNECT_CPU);
if (perf_chn)
hv_set_alloced_cpu(VMBUS_CONNECT_CPU);
return;
@ -721,7 +704,6 @@ static void init_vp_index(struct vmbus_channel *channel)
continue;
break;
}
channel->numa_node = numa_node;
alloced_mask = &hv_context.hv_numa_map[numa_node];
if (cpumask_weight(alloced_mask) ==
@ -739,7 +721,6 @@ static void init_vp_index(struct vmbus_channel *channel)
cpumask_set_cpu(target_cpu, alloced_mask);
channel->target_cpu = target_cpu;
channel->target_vp = hv_cpu_number_to_vp_number(target_cpu);
free_cpumask_var(available_mask);
}

3
drivers/hv/hv.c
Просмотреть файл

@ -241,7 +241,6 @@ int hv_synic_cleanup(unsigned int cpu)
{
struct vmbus_channel *channel, *sc;
bool channel_found = false;
unsigned long flags;
/*
* Hyper-V does not provide a way to change the connect CPU once
@ -263,14 +262,12 @@ int hv_synic_cleanup(unsigned int cpu)
channel_found = true;
break;
}
spin_lock_irqsave(&channel->lock, flags);
list_for_each_entry(sc, &channel->sc_list, sc_list) {
if (sc->target_cpu == cpu) {
channel_found = true;
break;
}
}
spin_unlock_irqrestore(&channel->lock, flags);
if (channel_found)
break;
}

17
drivers/hv/vmbus_drv.c
Просмотреть файл

@ -23,7 +23,6 @@
#include <linux/cpu.h>
#include <linux/sched/task_stack.h>
#include <asm/mshyperv.h>
#include <linux/delay.h>
#include <linux/notifier.h>
#include <linux/ptrace.h>
@ -227,7 +226,7 @@ static ssize_t numa_node_show(struct device *dev,
if (!hv_dev->channel)
return -ENODEV;
return sprintf(buf, "%d\n", hv_dev->channel->numa_node);
return sprintf(buf, "%d\n", cpu_to_node(hv_dev->channel->target_cpu));
}
static DEVICE_ATTR_RO(numa_node);
#endif
@ -508,18 +507,17 @@ static ssize_t channel_vp_mapping_show(struct device *dev,
{
struct hv_device *hv_dev = device_to_hv_device(dev);
struct vmbus_channel *channel = hv_dev->channel, *cur_sc;
unsigned long flags;
int buf_size = PAGE_SIZE, n_written, tot_written;
struct list_head *cur;
if (!channel)
return -ENODEV;
mutex_lock(&vmbus_connection.channel_mutex);
tot_written = snprintf(buf, buf_size, "%u:%u\n",
channel->offermsg.child_relid, channel->target_cpu);
spin_lock_irqsave(&channel->lock, flags);
list_for_each(cur, &channel->sc_list) {
if (tot_written >= buf_size - 1)
break;
@ -533,7 +531,7 @@ static ssize_t channel_vp_mapping_show(struct device *dev,
tot_written += n_written;
}
spin_unlock_irqrestore(&channel->lock, flags);
mutex_unlock(&vmbus_connection.channel_mutex);
return tot_written;
}
@ -1717,7 +1715,7 @@ static ssize_t target_cpu_store(struct vmbus_channel *channel,
/* No CPUs should come up or down during this. */
cpus_read_lock();
if (!cpumask_test_cpu(target_cpu, cpu_online_mask)) {
if (!cpu_online(target_cpu)) {
cpus_read_unlock();
return -EINVAL;
}
@ -1779,8 +1777,6 @@ static ssize_t target_cpu_store(struct vmbus_channel *channel,
*/
channel->target_cpu = target_cpu;
channel->target_vp = hv_cpu_number_to_vp_number(target_cpu);
channel->numa_node = cpu_to_node(target_cpu);
/* See init_vp_index(). */
if (hv_is_perf_channel(channel))
@ -2347,7 +2343,6 @@ acpi_walk_err:
static int vmbus_bus_suspend(struct device *dev)
{
struct vmbus_channel *channel, *sc;
unsigned long flags;
while (atomic_read(&vmbus_connection.offer_in_progress) != 0) {
/*
@ -2405,12 +2400,10 @@ static int vmbus_bus_suspend(struct device *dev)
continue;
}
spin_lock_irqsave(&channel->lock, flags);
list_for_each_entry(sc, &channel->sc_list, sc_list) {
pr_err("Sub-channel not deleted!\n");
WARN_ON_ONCE(1);
}
spin_unlock_irqrestore(&channel->lock, flags);
atomic_inc(&vmbus_connection.nr_chan_fixup_on_resume);
}

16
drivers/scsi/storvsc_drv.c
Просмотреть файл

@ -462,6 +462,11 @@ struct storvsc_device {
* Mask of CPUs bound to subchannels.
*/
struct cpumask alloced_cpus;
/*
* Serializes modifications of stor_chns[] from storvsc_do_io()
* and storvsc_change_target_cpu().
*/
spinlock_t lock;
/* Used for vsc/vsp channel reset process */
struct storvsc_cmd_request init_request;
struct storvsc_cmd_request reset_request;
@ -639,7 +644,7 @@ static void storvsc_change_target_cpu(struct vmbus_channel *channel, u32 old,
return;
/* See storvsc_do_io() -> get_og_chn(). */
spin_lock_irqsave(&device->channel->lock, flags);
spin_lock_irqsave(&stor_device->lock, flags);
/*
* Determines if the storvsc device has other channels assigned to
@ -676,7 +681,7 @@ old_is_alloced:
WRITE_ONCE(stor_device->stor_chns[new], channel);
cpumask_set_cpu(new, &stor_device->alloced_cpus);
spin_unlock_irqrestore(&device->channel->lock, flags);
spin_unlock_irqrestore(&stor_device->lock, flags);
}
static void handle_sc_creation(struct vmbus_channel *new_sc)
@ -1433,14 +1438,14 @@ static int storvsc_do_io(struct hv_device *device,
}
}
} else {
spin_lock_irqsave(&device->channel->lock, flags);
spin_lock_irqsave(&stor_device->lock, flags);
outgoing_channel = stor_device->stor_chns[q_num];
if (outgoing_channel != NULL) {
spin_unlock_irqrestore(&device->channel->lock, flags);
spin_unlock_irqrestore(&stor_device->lock, flags);
goto found_channel;
}
outgoing_channel = get_og_chn(stor_device, q_num);
spin_unlock_irqrestore(&device->channel->lock, flags);
spin_unlock_irqrestore(&stor_device->lock, flags);
}
found_channel:
@ -1881,6 +1886,7 @@ static int storvsc_probe(struct hv_device *device,
init_waitqueue_head(&stor_device->waiting_to_drain);
stor_device->device = device;
stor_device->host = host;
spin_lock_init(&stor_device->lock);
hv_set_drvdata(device, stor_device);
stor_device->port_number = host->host_no;

22
include/linux/hyperv.h
Просмотреть файл

@ -803,17 +803,15 @@ struct vmbus_channel {
u64 sig_event;
/*
* Starting with win8, this field will be used to specify
* the target virtual processor on which to deliver the interrupt for
* the host to guest communication.
* Prior to win8, incoming channel interrupts would only
* be delivered on cpu 0. Setting this value to 0 would
* preserve the earlier behavior.
* Starting with win8, this field will be used to specify the
* target CPU on which to deliver the interrupt for the host
* to guest communication.
*
* Prior to win8, incoming channel interrupts would only be
* delivered on CPU 0. Setting this value to 0 would preserve
* the earlier behavior.
*/
u32 target_vp;
/* The corresponding CPUID in the guest */
u32 target_cpu;
int numa_node;
/*
* Support for sub-channels. For high performance devices,
* it will be useful to have multiple sub-channels to support
@ -842,12 +840,6 @@ struct vmbus_channel {
*/
void (*chn_rescind_callback)(struct vmbus_channel *channel);
/*
* The spinlock to protect the structure. It is being used to protect
* test-and-set access to various attributes of the structure as well
* as all sc_list operations.
*/
spinlock_t lock;
/*
* All Sub-channels of a primary channel are linked here.
*/

2
include/uapi/linux/hyperv.h
Просмотреть файл

@ -219,7 +219,7 @@ struct hv_do_fcopy {
* kernel and user-level daemon communicate using a connector channel.
*
* The user mode component first registers with the
* the kernel component. Subsequently, the kernel component requests, data
* kernel component. Subsequently, the kernel component requests, data
* for the specified keys. In response to this message the user mode component
* fills in the value corresponding to the specified key. We overload the
* sequence field in the cn_msg header to define our KVP message types.

2
tools/hv/hv_kvp_daemon.c
Просмотреть файл

@ -437,7 +437,7 @@ void kvp_get_os_info(void)
/*
* Parse the /etc/os-release file if present:
* http://www.freedesktop.org/software/systemd/man/os-release.html
* https://www.freedesktop.org/software/systemd/man/os-release.html
*/
file = fopen("/etc/os-release", "r");
if (file != NULL) {