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IB/{hfi1, qib}: Fix a concurrency issue with device name in logging 

The get_unit_name() function crafts a string based on the device name
and the device unit number.  It then stores this in a static variable.

This has concurrency issues as can be seen with this log:

hfi1 0000:02:00.0: hfi1_1: read_idle_message: read idle message 0x203
hfi1 0000:01:00.0: hfi1_1: read_idle_message: read idle message 0x203

The PCI device ID (0000:02:00.0 vs. 0000:01:00.0) is correct for the
message, but the device string hfi1_1 is incorrect (it should be
hfi1_0 for the second log message).

Remove get_unit_name() function.

Instead, use the rvt accessor rvt_get_ibdev_name() to get the IB name
string.

Clean up any hfi1_early_xx calls that can now use the new path.

QIB has the same (qib_get_unit_name()) issue.  Updating as necessary.

Remove qib_get_unit_name() function.

Update log message that has redundant device name.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Michael J. Ruhl 2017-12-18 19:57:21 -08:00 committed by Doug Ledford
parent db9a2c6f9b
commit 11f0e89710
6 changed files with 18 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/infiniband/hw/hfi1/chip.c
View File

@ -14920,9 +14920,8 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
if (num_vls < HFI1_MIN_VLS_SUPPORTED ||
num_vls > HFI1_MAX_VLS_SUPPORTED) {
hfi1_early_err(&pdev->dev,
"Invalid num_vls %u, using %u VLs\n",
num_vls, HFI1_MAX_VLS_SUPPORTED);
dd_dev_err(dd, "Invalid num_vls %u, using %u VLs\n",
num_vls, HFI1_MAX_VLS_SUPPORTED);
num_vls = HFI1_MAX_VLS_SUPPORTED;
}
ppd->vls_supported = num_vls;

8
drivers/infiniband/hw/hfi1/driver.c
View File

@ -159,14 +159,6 @@ static int hfi1_caps_get(char *buffer, const struct kernel_param *kp)
return scnprintf(buffer, PAGE_SIZE, "0x%lx", cap_mask);
}
const char *get_unit_name(int unit)
{
static char iname[16];
snprintf(iname, sizeof(iname), DRIVER_NAME "_%u", unit);
return iname;
}
struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi)
{
struct hfi1_ibdev *ibdev = container_of(rdi, struct hfi1_ibdev, rdi);

22
drivers/infiniband/hw/hfi1/hfi.h
View File

@ -1971,7 +1971,6 @@ int get_platform_config_field(struct hfi1_devdata *dd,
table_type, int table_index, int field_index,
u32 *data, u32 len);
const char *get_unit_name(int unit);
struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi);
/*
@ -2121,39 +2120,42 @@ static inline u64 hfi1_pkt_base_sdma_integrity(struct hfi1_devdata *dd)
#define dd_dev_emerg(dd, fmt, ...) \
dev_emerg(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define dd_dev_err(dd, fmt, ...) \
dev_err(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define dd_dev_err_ratelimited(dd, fmt, ...) \
dev_err_ratelimited(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), \
##__VA_ARGS__)
#define dd_dev_warn(dd, fmt, ...) \
dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define dd_dev_warn_ratelimited(dd, fmt, ...) \
dev_warn_ratelimited(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), \
##__VA_ARGS__)
#define dd_dev_info(dd, fmt, ...) \
dev_info(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define dd_dev_info_ratelimited(dd, fmt, ...) \
dev_info_ratelimited(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), \
##__VA_ARGS__)
#define dd_dev_dbg(dd, fmt, ...) \
dev_dbg(&(dd)->pcidev->dev, "%s: " fmt, \
get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define hfi1_dev_porterr(dd, port, fmt, ...) \
dev_err(&(dd)->pcidev->dev, "%s: port %u: " fmt, \
get_unit_name((dd)->unit), (port), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), (port), ##__VA_ARGS__)
/*
* this is used for formatting hw error messages...

7
drivers/infiniband/hw/qib/qib.h
View File

@ -1428,7 +1428,6 @@ u64 qib_sps_ints(void);
*/
dma_addr_t qib_map_page(struct pci_dev *, struct page *, unsigned long,
size_t, int);
const char *qib_get_unit_name(int unit);
struct pci_dev *qib_get_pci_dev(struct rvt_dev_info *rdi);
/*
@ -1487,15 +1486,15 @@ extern struct mutex qib_mutex;
#define qib_dev_err(dd, fmt, ...) \
dev_err(&(dd)->pcidev->dev, "%s: " fmt, \
qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define qib_dev_warn(dd, fmt, ...) \
dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__)
#define qib_dev_porterr(dd, port, fmt, ...) \
dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
qib_get_unit_name((dd)->unit), (dd)->unit, (port), \
rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), (dd)->unit, (port), \
##__VA_ARGS__)
#define qib_devinfo(pcidev, fmt, ...) \

8
drivers/infiniband/hw/qib/qib_driver.c
View File

@ -81,14 +81,6 @@ MODULE_DESCRIPTION("Intel IB driver");
struct qlogic_ib_stats qib_stats;
const char *qib_get_unit_name(int unit)
{
static char iname[16];
snprintf(iname, sizeof(iname), "infinipath%u", unit);
return iname;
}
struct pci_dev *qib_get_pci_dev(struct rvt_dev_info *rdi)
{
struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);

3
drivers/infiniband/hw/qib/qib_eeprom.c
View File

@ -163,8 +163,7 @@ void qib_get_eeprom_info(struct qib_devdata *dd)
if (bguid[6] == 0xff) {
if (bguid[5] == 0xff) {
qib_dev_err(dd,
"Can't set %s GUID from base, wraps to OUI!\n",
qib_get_unit_name(t));
"Can't set GUID from base, wraps to OUI!\n");
dd->base_guid = 0;
goto bail;
}