c2676069cb
printk_ratelimited() in the LinuxKPI. While at it fix the inclusion guard of printk.h to be similar to the rest of the LinuxKPI header files. MFC after: 1 week Sponsored by: Mellanox Technologies
116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_PRINTK_H_
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#define _LINUX_PRINTK_H_
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#include <linux/kernel.h>
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/* GID printing macros */
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#define GID_PRINT_FMT "%.4x:%.4x:%.4x:%.4x:%.4x:%.4x:%.4x:%.4x"
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#define GID_PRINT_ARGS(gid_raw) htons(((u16 *)gid_raw)[0]), htons(((u16 *)gid_raw)[1]),\
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htons(((u16 *)gid_raw)[2]), htons(((u16 *)gid_raw)[3]),\
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htons(((u16 *)gid_raw)[4]), htons(((u16 *)gid_raw)[5]),\
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htons(((u16 *)gid_raw)[6]), htons(((u16 *)gid_raw)[7])
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enum {
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DUMP_PREFIX_NONE,
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DUMP_PREFIX_ADDRESS,
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DUMP_PREFIX_OFFSET
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};
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static inline void
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print_hex_dump(const char *level, const char *prefix_str,
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const int prefix_type, const int rowsize, const int groupsize,
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const void *buf, size_t len, const bool ascii)
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{
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typedef const struct { long long value; } __packed *print_64p_t;
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typedef const struct { uint32_t value; } __packed *print_32p_t;
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typedef const struct { uint16_t value; } __packed *print_16p_t;
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const void *buf_old = buf;
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int row;
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while (len > 0) {
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if (level != NULL)
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printf("%s", level);
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if (prefix_str != NULL)
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printf("%s ", prefix_str);
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switch (prefix_type) {
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case DUMP_PREFIX_ADDRESS:
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printf("[%p] ", buf);
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break;
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case DUMP_PREFIX_OFFSET:
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printf("[%p] ", (const char *)((const char *)buf -
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(const char *)buf_old));
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break;
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default:
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break;
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}
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for (row = 0; row != rowsize; row++) {
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if (groupsize == 8 && len > 7) {
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printf("%016llx ", ((print_64p_t)buf)->value);
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buf = (const uint8_t *)buf + 8;
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len -= 8;
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} else if (groupsize == 4 && len > 3) {
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printf("%08x ", ((print_32p_t)buf)->value);
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buf = (const uint8_t *)buf + 4;
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len -= 4;
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} else if (groupsize == 2 && len > 1) {
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printf("%04x ", ((print_16p_t)buf)->value);
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buf = (const uint8_t *)buf + 2;
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len -= 2;
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} else if (len > 0) {
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printf("%02x ", *(const uint8_t *)buf);
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buf = (const uint8_t *)buf + 1;
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len--;
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} else {
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break;
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}
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}
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printf("\n");
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}
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}
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static inline void
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print_hex_dump_bytes(const char *prefix_str, const int prefix_type,
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const void *buf, size_t len)
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{
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print_hex_dump(NULL, prefix_str, prefix_type, 16, 1, buf, len, 0);
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}
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#define printk_ratelimited(...) do { \
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static linux_ratelimit_t __ratelimited; \
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if (linux_ratelimited(&__ratelimited)) \
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printk(__VA_ARGS__); \
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} while (0)
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#endif /* _LINUX_PRINTK_H_ */
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