142 lines
5.1 KiB
C
142 lines
5.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef DRBD_POLYMORPH_PRINTK_H
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#define DRBD_POLYMORPH_PRINTK_H
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#if !defined(CONFIG_DYNAMIC_DEBUG)
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#undef DEFINE_DYNAMIC_DEBUG_METADATA
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#undef __dynamic_pr_debug
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#undef DYNAMIC_DEBUG_BRANCH
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#define DEFINE_DYNAMIC_DEBUG_METADATA(D, F) const char *D = F; ((void)D)
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#define __dynamic_pr_debug(D, F, args...) do { (void)(D); if (0) printk(F, ## args); } while (0)
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#define DYNAMIC_DEBUG_BRANCH(D) false
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#endif
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#define __drbd_printk_drbd_device_prep(device) \
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const struct drbd_device *__d = (device); \
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const struct drbd_resource *__r = __d->resource
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#define __drbd_printk_drbd_device_fmt(fmt) "drbd %s/%u drbd%u: " fmt
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#define __drbd_printk_drbd_device_args() __r->name, __d->vnr, __d->minor
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#define __drbd_printk_drbd_device_unprep()
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#define __drbd_printk_drbd_peer_device_prep(peer_device) \
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const struct drbd_device *__d; \
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const struct drbd_resource *__r; \
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__d = (peer_device)->device; \
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__r = __d->resource
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#define __drbd_printk_drbd_peer_device_fmt(fmt) \
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"drbd %s/%u drbd%u: " fmt
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#define __drbd_printk_drbd_peer_device_args() \
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__r->name, __d->vnr, __d->minor
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#define __drbd_printk_drbd_peer_device_unprep()
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#define __drbd_printk_drbd_resource_prep(resource) \
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const struct drbd_resource *__r = resource
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#define __drbd_printk_drbd_resource_fmt(fmt) "drbd %s: " fmt
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#define __drbd_printk_drbd_resource_args() __r->name
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#define __drbd_printk_drbd_resource_unprep(resource)
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#define __drbd_printk_drbd_connection_prep(connection) \
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const struct drbd_connection *__c = (connection); \
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const struct drbd_resource *__r = __c->resource
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#define __drbd_printk_drbd_connection_fmt(fmt) \
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"drbd %s: " fmt
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#define __drbd_printk_drbd_connection_args() \
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__r->name
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#define __drbd_printk_drbd_connection_unprep()
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void drbd_printk_with_wrong_object_type(void);
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void drbd_dyn_dbg_with_wrong_object_type(void);
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#define __drbd_printk_choose_cond(obj, struct_name) \
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(__builtin_types_compatible_p(typeof(obj), struct struct_name *) || \
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__builtin_types_compatible_p(typeof(obj), const struct struct_name *))
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#define __drbd_printk_if_same_type(obj, struct_name, level, fmt, args...) \
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__drbd_printk_choose_cond(obj, struct_name), \
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({ \
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__drbd_printk_ ## struct_name ## _prep((const struct struct_name *)(obj)); \
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printk(level __drbd_printk_ ## struct_name ## _fmt(fmt), \
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__drbd_printk_ ## struct_name ## _args(), ## args); \
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__drbd_printk_ ## struct_name ## _unprep(); \
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})
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#define drbd_printk(level, obj, fmt, args...) \
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__builtin_choose_expr( \
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__drbd_printk_if_same_type(obj, drbd_device, level, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_printk_if_same_type(obj, drbd_resource, level, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_printk_if_same_type(obj, drbd_connection, level, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_printk_if_same_type(obj, drbd_peer_device, level, fmt, ## args), \
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drbd_printk_with_wrong_object_type()))))
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#define __drbd_dyn_dbg_if_same_type(obj, struct_name, fmt, args...) \
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__drbd_printk_choose_cond(obj, struct_name), \
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({ \
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DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
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if (DYNAMIC_DEBUG_BRANCH(descriptor)) { \
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__drbd_printk_ ## struct_name ## _prep((const struct struct_name *)(obj)); \
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__dynamic_pr_debug(&descriptor, __drbd_printk_ ## struct_name ## _fmt(fmt), \
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__drbd_printk_ ## struct_name ## _args(), ## args); \
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__drbd_printk_ ## struct_name ## _unprep(); \
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} \
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})
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#define dynamic_drbd_dbg(obj, fmt, args...) \
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__builtin_choose_expr( \
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__drbd_dyn_dbg_if_same_type(obj, drbd_device, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_dyn_dbg_if_same_type(obj, drbd_resource, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_dyn_dbg_if_same_type(obj, drbd_connection, fmt, ## args), \
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__builtin_choose_expr( \
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__drbd_dyn_dbg_if_same_type(obj, drbd_peer_device, fmt, ## args), \
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drbd_dyn_dbg_with_wrong_object_type()))))
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#define drbd_emerg(device, fmt, args...) \
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drbd_printk(KERN_EMERG, device, fmt, ## args)
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#define drbd_alert(device, fmt, args...) \
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drbd_printk(KERN_ALERT, device, fmt, ## args)
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#define drbd_crit(device, fmt, args...) \
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drbd_printk(KERN_CRIT, device, fmt, ## args)
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#define drbd_err(device, fmt, args...) \
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drbd_printk(KERN_ERR, device, fmt, ## args)
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#define drbd_warn(device, fmt, args...) \
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drbd_printk(KERN_WARNING, device, fmt, ## args)
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#define drbd_notice(device, fmt, args...) \
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drbd_printk(KERN_NOTICE, device, fmt, ## args)
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#define drbd_info(device, fmt, args...) \
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drbd_printk(KERN_INFO, device, fmt, ## args)
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#define drbd_ratelimit() \
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({ \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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__ratelimit(&_rs); \
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})
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#define D_ASSERT(x, exp) \
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do { \
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if (!(exp)) \
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drbd_err(x, "ASSERTION %s FAILED in %s\n", \
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#exp, __func__); \
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} while (0)
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/**
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* expect - Make an assertion
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*
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* Unlike the assert macro, this macro returns a boolean result.
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*/
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#define expect(x, exp) ({ \
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bool _bool = (exp); \
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if (!_bool && drbd_ratelimit()) \
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drbd_err(x, "ASSERTION %s FAILED in %s\n", \
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#exp, __func__); \
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_bool; \
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})
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#endif
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