summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2022-08-04 15:35:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-08-04 15:35:58 -0700
commitc040862bfbd9c5f3cb64e1df1c623e20e38fe656 (patch)
tree15a9d902edff7b98d2235cbea4235890713bde1c
parent995177a4c75ee9b9069d5a313d90c005cf89c1b2 (diff)
parent0847d167d0f9bdc8f61e5e5d32831fa8fdcd150f (diff)
Merge tag 'xtensa-20220804' of https://github.com/jcmvbkbc/linux-xtensa
Pull xtensa updates from Max Filippov: - support KCOV - enable ARCH_HAS_GCOV_PROFILE_ALL - minor ISS network driver cleanups * tag 'xtensa-20220804' of https://github.com/jcmvbkbc/linux-xtensa: xtensa: enable ARCH_HAS_GCOV_PROFILE_ALL xtensa: enable KCOV support xtensa: iss: fix handling error cases in iss_net_configure() xtensa: iss/network: provide release() callback xtensa: iss/network: drop 'devices' list
-rw-r--r--Documentation/features/debug/gcov-profile-all/arch-support.txt2
-rw-r--r--Documentation/features/debug/kcov/arch-support.txt2
-rw-r--r--arch/xtensa/Kconfig2
-rw-r--r--arch/xtensa/boot/lib/Makefile2
-rw-r--r--arch/xtensa/platforms/iss/network.c63
5 files changed, 34 insertions, 37 deletions
diff --git a/Documentation/features/debug/gcov-profile-all/arch-support.txt b/Documentation/features/debug/gcov-profile-all/arch-support.txt
index 502c1d409648..0b3ba2415fac 100644
--- a/Documentation/features/debug/gcov-profile-all/arch-support.txt
+++ b/Documentation/features/debug/gcov-profile-all/arch-support.txt
@@ -27,5 +27,5 @@
| sparc: | TODO |
| um: | ok |
| x86: | ok |
- | xtensa: | TODO |
+ | xtensa: | ok |
-----------------------
diff --git a/Documentation/features/debug/kcov/arch-support.txt b/Documentation/features/debug/kcov/arch-support.txt
index afb90bebded2..0a91f5ce34a9 100644
--- a/Documentation/features/debug/kcov/arch-support.txt
+++ b/Documentation/features/debug/kcov/arch-support.txt
@@ -27,5 +27,5 @@
| sparc: | TODO |
| um: | ok |
| x86: | ok |
- | xtensa: | TODO |
+ | xtensa: | ok |
-----------------------
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 7927fed7bc83..14e547ca2af8 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -6,6 +6,8 @@ config XTENSA
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT if MMU
+ select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_KCOV
select ARCH_HAS_SYNC_DMA_FOR_CPU if MMU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE if MMU
select ARCH_HAS_DMA_SET_UNCACHED if MMU
diff --git a/arch/xtensa/boot/lib/Makefile b/arch/xtensa/boot/lib/Makefile
index 162d10af36f3..0378a22a08e3 100644
--- a/arch/xtensa/boot/lib/Makefile
+++ b/arch/xtensa/boot/lib/Makefile
@@ -17,6 +17,8 @@ endif
KASAN_SANITIZE := n
KCSAN_SANITIZE := n
+KCOV_INSTRUMENT := n
+GCOV_PROFILE := n
CFLAGS_REMOVE_inflate.o += -fstack-protector -fstack-protector-strong
CFLAGS_REMOVE_zmem.o += -fstack-protector -fstack-protector-strong
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index fd84d4891758..9ac46ab3a296 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -37,10 +37,6 @@
#define ETH_HEADER_OTHER 14
#define ISS_NET_TIMER_VALUE (HZ / 10)
-
-static DEFINE_SPINLOCK(devices_lock);
-static LIST_HEAD(devices);
-
/* ------------------------------------------------------------------------- */
/* We currently only support the TUNTAP transport protocol. */
@@ -70,8 +66,6 @@ struct iss_net_ops {
/* This structure contains out private information for the driver. */
struct iss_net_private {
- struct list_head device_list;
-
spinlock_t lock;
struct net_device *dev;
struct platform_device pdev;
@@ -472,23 +466,30 @@ static const struct net_device_ops iss_netdev_ops = {
.ndo_set_rx_mode = iss_net_set_multicast_list,
};
-static int iss_net_configure(int index, char *init)
+static void iss_net_pdev_release(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct iss_net_private *lp =
+ container_of(pdev, struct iss_net_private, pdev);
+
+ free_netdev(lp->dev);
+}
+
+static void iss_net_configure(int index, char *init)
{
struct net_device *dev;
struct iss_net_private *lp;
- int err;
dev = alloc_etherdev(sizeof(*lp));
if (dev == NULL) {
pr_err("eth_configure: failed to allocate device\n");
- return 1;
+ return;
}
/* Initialize private element. */
lp = netdev_priv(dev);
*lp = (struct iss_net_private) {
- .device_list = LIST_HEAD_INIT(lp->device_list),
.dev = dev,
.index = index,
};
@@ -509,7 +510,7 @@ static int iss_net_configure(int index, char *init)
if (!tuntap_probe(lp, index, init)) {
pr_err("%s: invalid arguments. Skipping device!\n",
dev->name);
- goto errout;
+ goto err_free_netdev;
}
pr_info("Netdevice %d (%pM)\n", index, dev->dev_addr);
@@ -517,17 +518,16 @@ static int iss_net_configure(int index, char *init)
/* sysfs register */
if (!driver_registered) {
- platform_driver_register(&iss_net_driver);
+ if (platform_driver_register(&iss_net_driver))
+ goto err_free_netdev;
driver_registered = 1;
}
- spin_lock(&devices_lock);
- list_add(&lp->device_list, &devices);
- spin_unlock(&devices_lock);
-
lp->pdev.id = index;
lp->pdev.name = DRIVER_NAME;
- platform_device_register(&lp->pdev);
+ lp->pdev.dev.release = iss_net_pdev_release;
+ if (platform_device_register(&lp->pdev))
+ goto err_free_netdev;
SET_NETDEV_DEV(dev, &lp->pdev.dev);
dev->netdev_ops = &iss_netdev_ops;
@@ -536,23 +536,20 @@ static int iss_net_configure(int index, char *init)
dev->irq = -1;
rtnl_lock();
- err = register_netdevice(dev);
- rtnl_unlock();
-
- if (err) {
+ if (register_netdevice(dev)) {
+ rtnl_unlock();
pr_err("%s: error registering net device!\n", dev->name);
- /* XXX: should we call ->remove() here? */
- free_netdev(dev);
- return 1;
+ platform_device_unregister(&lp->pdev);
+ return;
}
+ rtnl_unlock();
timer_setup(&lp->tl, iss_net_user_timer_expire, 0);
- return 0;
+ return;
-errout:
- /* FIXME: unregister; free, etc.. */
- return -EIO;
+err_free_netdev:
+ free_netdev(dev);
}
/* ------------------------------------------------------------------------- */
@@ -574,7 +571,7 @@ struct iss_net_init {
static int __init iss_net_setup(char *str)
{
- struct iss_net_private *device = NULL;
+ struct iss_net_init *device = NULL;
struct iss_net_init *new;
struct list_head *ele;
char *end;
@@ -595,16 +592,12 @@ static int __init iss_net_setup(char *str)
}
str = end;
- spin_lock(&devices_lock);
-
- list_for_each(ele, &devices) {
- device = list_entry(ele, struct iss_net_private, device_list);
+ list_for_each(ele, &eth_cmd_line) {
+ device = list_entry(ele, struct iss_net_init, list);
if (device->index == n)
break;
}
- spin_unlock(&devices_lock);
-
if (device && device->index == n) {
pr_err("Device %u already configured\n", n);
return 1;