diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 11 | ||||
| -rw-r--r-- | lib/devres.c | 8 |
2 files changed, 15 insertions, 4 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 63f04c15e6f..4448f91b865 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -134,6 +134,17 @@ config SCHEDSTATS application, you can say N to avoid the very slight overhead this adds. +config TIMER_STATS + bool "Collect kernel timers statistics" + depends on DEBUG_KERNEL && PROC_FS + help + If you say Y here, additional code will be inserted into the + timer routines to collect statistics about kernel timers being + reprogrammed. The statistics can be read from /proc/timer_stats. + The statistics collection is started by writing 1 to /proc/timer_stats, + writing 0 stops it. This feature is useful to collect information + about timer usage patterns in kernel and userspace. + config DEBUG_SLAB bool "Debug slab memory allocations" depends on DEBUG_KERNEL && SLAB diff --git a/lib/devres.c b/lib/devres.c index 2a668dd7cac..eb38849aa71 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -274,21 +274,21 @@ int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name) rc = pci_request_region(pdev, i, name); if (rc) - goto err_region; + goto err_inval; rc = -ENOMEM; if (!pcim_iomap(pdev, i, 0)) - goto err_iomap; + goto err_region; } return 0; - err_iomap: - pcim_iounmap(pdev, iomap[i]); err_region: pci_release_region(pdev, i); err_inval: while (--i >= 0) { + if (!(mask & (1 << i))) + continue; pcim_iounmap(pdev, iomap[i]); pci_release_region(pdev, i); } |