Date: Thu, 23 Mar 2017 10:48:10 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r315856 - in head/sys/compat/linuxkpi/common: include/linux src Message-ID: <201703231048.v2NAmAFU056867@repo.freebsd.org>
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Author: hselasky Date: Thu Mar 23 10:48:10 2017 New Revision: 315856 URL: https://svnweb.freebsd.org/changeset/base/315856 Log: Add support for ratelimited printouts in the LinuxKPI. MFC after: 1 week Sponsored by: Mellanox Technologies Modified: head/sys/compat/linuxkpi/common/include/linux/device.h head/sys/compat/linuxkpi/common/include/linux/kernel.h head/sys/compat/linuxkpi/common/src/linux_compat.c Modified: head/sys/compat/linuxkpi/common/include/linux/device.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/device.h Thu Mar 23 10:43:29 2017 (r315855) +++ head/sys/compat/linuxkpi/common/include/linux/device.h Thu Mar 23 10:48:10 2017 (r315856) @@ -144,6 +144,18 @@ show_class_attr_string(struct class *cla #define dev_printk(lvl, dev, fmt, ...) \ device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) +#define dev_err_ratelimited(dev, ...) do { \ + static time_t __ratelimited; \ + if (linux_ratelimited(&__ratelimited)) \ + dev_err(dev, __VA_ARGS__); \ +} while (0) + +#define dev_warn_ratelimited(dev, ...) do { \ + static time_t __ratelimited; \ + if (linux_ratelimited(&__ratelimited)) \ + dev_warn(dev, __VA_ARGS__); \ +} while (0) + static inline void * dev_get_drvdata(const struct device *dev) { Modified: head/sys/compat/linuxkpi/common/include/linux/kernel.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/kernel.h Thu Mar 23 10:43:29 2017 (r315855) +++ head/sys/compat/linuxkpi/common/include/linux/kernel.h Thu Mar 23 10:48:10 2017 (r315856) @@ -224,6 +224,11 @@ scnprintf(char *buf, size_t size, const log_once(LOG_INFO, pr_fmt(fmt), ##__VA_ARGS__) #define pr_cont(fmt, ...) \ printk(KERN_CONT fmt, ##__VA_ARGS__) +#define pr_warn_ratelimited(...) do { \ + static time_t __ratelimited; \ + if (linux_ratelimited(&__ratelimited)) \ + pr_warning(__VA_ARGS__); \ +} while (0) #ifndef WARN #define WARN(condition, ...) ({ \ @@ -331,4 +336,6 @@ abs64(int64_t x) return (x < 0 ? -x : x); } +extern bool linux_ratelimited(time_t *); + #endif /* _LINUX_KERNEL_H_ */ Modified: head/sys/compat/linuxkpi/common/src/linux_compat.c ============================================================================== --- head/sys/compat/linuxkpi/common/src/linux_compat.c Thu Mar 23 10:43:29 2017 (r315855) +++ head/sys/compat/linuxkpi/common/src/linux_compat.c Thu Mar 23 10:48:10 2017 (r315856) @@ -1484,6 +1484,20 @@ __unregister_chrdev(unsigned int major, bool linux_cpu_has_clflush; #endif +bool +linux_ratelimited(time_t *ptime) +{ + /* make sure uptime is not zero by OR'ing bit 31 */ + time_t curr = time_uptime | (1U << 31); + + /* check if one or more seconds have passed */ + if (*ptime != curr) { + *ptime = curr; + return (1); + } + return (0); +} + static void linux_compat_init(void *arg) {
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