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Subject[PATCH v2] staging: unisys: replace kzalloc/kfree with UISMALLOC/UISFREE
Date

It doesn't need to trace status of buffer when buffers are
allocated/deallocated. So stuff of tracing memory status
are removed. And also UISMALLOC/UISFREE macro are removed
completetly. just use kzalloc/kfree.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
v2: removed __GFP_NORETRY flag for kzalloc()

drivers/staging/unisys/include/uisutils.h | 6 --
drivers/staging/unisys/uislib/uislib.c | 107 +++--------------------------
drivers/staging/unisys/uislib/uisutils.c | 5 +-
3 files changed, 13 insertions(+), 105 deletions(-)

diff --git a/drivers/staging/unisys/include/uisutils.h b/drivers/staging/unisys/include/uisutils.h
index 81b5d9b..1c6d872 100644
--- a/drivers/staging/unisys/include/uisutils.h
+++ b/drivers/staging/unisys/include/uisutils.h
@@ -340,12 +340,6 @@ static inline unsigned int Issue_VMCALL_FATAL_BYE_BYE(void)
}

#define UIS_DAEMONIZE(nam)
-void *uislib_malloc(size_t siz, gfp_t gfp, U8 contiguous, char *fn, int ln);
-#define UISMALLOC(siz, gfp) uislib_malloc(siz, gfp, 1, __FILE__, __LINE__)
-#define UISVMALLOC(siz) uislib_malloc(siz, 0, 0, __FILE__, __LINE__)
-void uislib_free(void *p, size_t siz, U8 contiguous, char *fn, int ln);
-#define UISFREE(p, siz) uislib_free(p, siz, 1, __FILE__, __LINE__)
-#define UISVFREE(p, siz) uislib_free(p, siz, 0, __FILE__, __LINE__)
void *uislib_cache_alloc(struct kmem_cache *cur_pool, char *fn, int ln);
#define UISCACHEALLOC(cur_pool) uislib_cache_alloc(cur_pool, __FILE__, __LINE__)
void uislib_cache_free(struct kmem_cache *cur_pool, void *p, char *fn, int ln);
diff --git a/drivers/staging/unisys/uislib/uislib.c b/drivers/staging/unisys/uislib/uislib.c
index 1737f3a..dc202a0 100644
--- a/drivers/staging/unisys/uislib/uislib.c
+++ b/drivers/staging/unisys/uislib/uislib.c
@@ -316,7 +316,7 @@ create_bus(CONTROLVM_MESSAGE *msg, char *buf)
size =
sizeof(struct bus_info) +
(deviceCount * sizeof(struct device_info *));
- bus = UISMALLOC(size, GFP_ATOMIC);
+ bus = kzalloc(size, GFP_ATOMIC);
if (!bus) {
LOGERR("CONTROLVM_BUS_CREATE Failed: kmalloc for bus failed.\n");
POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo,
@@ -324,8 +324,6 @@ create_bus(CONTROLVM_MESSAGE *msg, char *buf)
return CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
}

- memset(bus, 0, size);
-
/* Currently by default, the bus Number is the GuestHandle.
* Configure Bus message can override this.
*/
@@ -359,7 +357,7 @@ create_bus(CONTROLVM_MESSAGE *msg, char *buf)
bus->busNo);
POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus->busNo,
POSTCODE_SEVERITY_ERR);
- UISFREE(bus, size);
+ kfree(bus);
return CONTROLVM_RESP_ERROR_ALREADY_DONE;
}
if ((msg->cmd.createBus.channelAddr != 0)
@@ -380,14 +378,14 @@ create_bus(CONTROLVM_MESSAGE *msg, char *buf)
cmd.add_vbus.busTypeGuid = msg->cmd.createBus.busDataTypeGuid;
cmd.add_vbus.busInstGuid = msg->cmd.createBus.busInstGuid;
if (!VirtControlChanFunc) {
- UISFREE(bus, size);
+ kfree(bus);
LOGERR("CONTROLVM_BUS_CREATE Failed: virtpci callback not registered.");
POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus->busNo,
POSTCODE_SEVERITY_ERR);
return CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
}
if (!VirtControlChanFunc(&cmd)) {
- UISFREE(bus, size);
+ kfree(bus);
LOGERR("CONTROLVM_BUS_CREATE Failed: virtpci GUEST_ADD_VBUS returned error.");
POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus->busNo,
POSTCODE_SEVERITY_ERR);
@@ -485,9 +483,7 @@ destroy_bus(CONTROLVM_MESSAGE *msg, char *buf)
bus->pBusChannel = NULL;
}

- UISFREE(bus,
- sizeof(struct bus_info) +
- (bus->deviceCount * sizeof(struct device_info *)));
+ kfree(bus);
return CONTROLVM_RESP_SUCCESS;
}

@@ -507,7 +503,7 @@ create_device(CONTROLVM_MESSAGE *msg, char *buf)
POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo,
POSTCODE_SEVERITY_INFO);

- dev = UISMALLOC(sizeof(struct device_info), GFP_ATOMIC);
+ dev = kzalloc(sizeof(struct device_info), GFP_ATOMIC);
if (!dev) {
LOGERR("CONTROLVM_DEVICE_CREATE Failed: kmalloc for dev failed.\n");
POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
@@ -515,7 +511,6 @@ create_device(CONTROLVM_MESSAGE *msg, char *buf)
return CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
}

- memset(dev, 0, sizeof(struct device_info));
dev->channelTypeGuid = msg->cmd.createDevice.dataTypeGuid;
dev->intr = msg->cmd.createDevice.intr;
dev->channelAddr = msg->cmd.createDevice.channelAddr;
@@ -688,7 +683,7 @@ Away:
dev->chanptr = NULL;
}

- UISFREE(dev, sizeof(struct device_info));
+ kfree(dev);
return result;
}

@@ -917,7 +912,7 @@ destroy_device(CONTROLVM_MESSAGE *msg, char *buf)
LOGINF("destroy_device, doing iounmap");
uislib_iounmap(dev->chanptr);
}
- UISFREE(dev, sizeof(struct device_info));
+ kfree(dev);
bus->device[devNo] = NULL;
break;
}
@@ -1343,69 +1338,7 @@ uislib_client_delete_vnic(U32 busNo)
return 1;
}
EXPORT_SYMBOL_GPL(uislib_client_delete_vnic);
-
- /* end client_delete_vnic */
-
-static atomic_t Malloc_BytesInUse = ATOMIC_INIT(0);
-static atomic_t Malloc_BuffersInUse = ATOMIC_INIT(0);
-static atomic_t Malloc_FailuresAlloc = ATOMIC_INIT(0);
-static atomic_t Malloc_FailuresFree = ATOMIC_INIT(0);
-static atomic_t Malloc_TotalMallocs = ATOMIC_INIT(0);
-static atomic_t Malloc_TotalFrees = ATOMIC_INIT(0);
-
-void *
-uislib_malloc(size_t siz, gfp_t gfp, U8 contiguous, char *fn, int ln)
-{
- void *p = NULL;
-
- if (contiguous == 0) {
- /* Allocate non-contiguous memory, such as in the
- * add_vnic and add_vhba methods where we are rebooting
- * the guest, for example. Otherwise the contiguous
- * memory allocation attempt results in an
- * out-of-memory crash in the IOVM...
- */
- p = vmalloc(siz);
- } else {
- /* __GFP_NORETRY means "ok to fail", meaning kmalloc()
- * can return NULL. If you do NOT specify
- * __GFP_NORETRY, Linux will go to extreme measures to
- * get memory for you (like, invoke oom killer), which
- * will probably cripple the system.
- */
- p = kmalloc(siz, gfp | __GFP_NORETRY);
- }
- if (p == NULL) {
- LOGERR("uislib_malloc failed to alloc %d bytes @%s:%d",
- (int) siz, fn, ln);
- atomic_inc(&Malloc_FailuresAlloc);
- return NULL;
- }
- atomic_add((int) (siz), &Malloc_BytesInUse);
- atomic_inc(&Malloc_BuffersInUse);
- atomic_inc(&Malloc_TotalMallocs); /* will eventually overflow */
- return p;
-}
-EXPORT_SYMBOL_GPL(uislib_malloc);
-
-void
-uislib_free(void *p, size_t siz, U8 contiguous, char *fn, int ln)
-{
- if (p == NULL) {
- LOGERR("uislib_free NULL pointer @%s:%d", fn, ln);
- atomic_inc(&Malloc_FailuresFree);
- return;
- }
-
- if (contiguous == 0)
- vfree(p);
- else
- kfree(p);
- atomic_sub((int) (siz), &Malloc_BytesInUse);
- atomic_dec(&Malloc_BuffersInUse);
- atomic_inc(&Malloc_TotalFrees); /* will eventually overflow */
-}
-EXPORT_SYMBOL_GPL(uislib_free);
+/* end client_delete_vnic */

void *
uislib_cache_alloc(struct kmem_cache *cur_pool, char *fn, int ln)
@@ -1605,24 +1538,6 @@ info_proc_read_helper(char **buff, int *buff_len)
}
read_unlock(&BusListLock);

- if (PLINE("Malloc bytes in use: %d\n",
- atomic_read(&Malloc_BytesInUse)) < 0)
- goto err_done;
- if (PLINE("Malloc buffers in use: %d\n",
- atomic_read(&Malloc_BuffersInUse)) < 0)
- goto err_done;
- if (PLINE("Malloc allocation failures: %d\n",
- atomic_read(&Malloc_FailuresAlloc)) < 0)
- goto err_done;
- if (PLINE("Malloc free failures: %d\n",
- atomic_read(&Malloc_FailuresFree)) < 0)
- goto err_done;
- if (PLINE("Malloc total mallocs: %u (may overflow)\n",
- (unsigned) atomic_read(&Malloc_TotalMallocs)) < 0)
- goto err_done;
- if (PLINE("Malloc total frees: %u (may overflow)\n",
- (unsigned) atomic_read(&Malloc_TotalFrees)) < 0)
- goto err_done;
if (PLINE("UisUtils_Registered_Services: %d\n",
atomic_read(&UisUtils_Registered_Services)) < 0)
goto err_done;
@@ -1655,7 +1570,7 @@ info_proc_read(struct file *file, char __user *buf, size_t len, loff_t *offset)
/* *start = buf; */
if (ProcReadBuffer == NULL) {
DBGINF("ProcReadBuffer == NULL; allocating buffer.\n.");
- ProcReadBuffer = UISVMALLOC(PROC_READ_BUFFER_SIZE);
+ ProcReadBuffer = vmalloc(PROC_READ_BUFFER_SIZE);

if (ProcReadBuffer == NULL) {
LOGERR("failed to allocate buffer to provide proc data.\n");
@@ -2486,7 +2401,7 @@ uislib_mod_exit(void)
remove_proc_entry(DIR_PROC_ENTRY, NULL);

if (ProcReadBuffer) {
- UISVFREE(ProcReadBuffer, PROC_READ_BUFFER_SIZE);
+ vfree(ProcReadBuffer);
ProcReadBuffer = NULL;
}

diff --git a/drivers/staging/unisys/uislib/uisutils.c b/drivers/staging/unisys/uislib/uisutils.c
index 208b7ea..3178f75 100644
--- a/drivers/staging/unisys/uislib/uisutils.c
+++ b/drivers/staging/unisys/uislib/uisutils.c
@@ -291,10 +291,9 @@ ReqHandlerAdd(GUID switchTypeGuid,
{
ReqHandlerInfo_t *rc = NULL;

- rc = UISMALLOC(sizeof(*rc), GFP_ATOMIC);
+ rc = kzalloc(sizeof(*rc), GFP_ATOMIC);
if (!rc)
return NULL;
- memset(rc, 0, sizeof(*rc));
rc->switchTypeGuid = switchTypeGuid;
rc->controlfunc = controlfunc;
rc->min_channel_bytes = min_channel_bytes;
@@ -342,7 +341,7 @@ ReqHandlerDel(GUID switchTypeGuid)
(&entry->switchTypeGuid, &switchTypeGuid,
sizeof(GUID)) == 0) {
list_del(lelt);
- UISFREE(entry, sizeof(*entry));
+ kfree(entry);
rc++;
}
}
--
1.7.4.4



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