4ba9920e5e
Pull networking updates from David Miller:
1) BPF debugger and asm tool by Daniel Borkmann.
2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann.
3) Correct reciprocal_divide and update users, from Hannes Frederic
Sowa and Daniel Borkmann.
4) Currently we only have a "set" operation for the hw timestamp socket
ioctl, add a "get" operation to match. From Ben Hutchings.
5) Add better trace events for debugging driver datapath problems, also
from Ben Hutchings.
6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we
have a small send and a previous packet is already in the qdisc or
device queue, defer until TX completion or we get more data.
7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko.
8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel
Borkmann.
9) Share IP header compression code between Bluetooth and IEEE802154
layers, from Jukka Rissanen.
10) Fix ipv6 router reachability probing, from Jiri Benc.
11) Allow packets to be captured on macvtap devices, from Vlad Yasevich.
12) Support tunneling in GRO layer, from Jerry Chu.
13) Allow bonding to be configured fully using netlink, from Scott
Feldman.
14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can
already get the TCI. From Atzm Watanabe.
15) New "Heavy Hitter" qdisc, from Terry Lam.
16) Significantly improve the IPSEC support in pktgen, from Fan Du.
17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom
Herbert.
18) Add Proportional Integral Enhanced packet scheduler, from Vijay
Subramanian.
19) Allow openvswitch to mmap'd netlink, from Thomas Graf.
20) Key TCP metrics blobs also by source address, not just destination
address. From Christoph Paasch.
21) Support 10G in generic phylib. From Andy Fleming.
22) Try to short-circuit GRO flow compares using device provided RX
hash, if provided. From Tom Herbert.
The wireless and netfilter folks have been busy little bees too.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits)
net/cxgb4: Fix referencing freed adapter
ipv6: reallocate addrconf router for ipv6 address when lo device up
fib_frontend: fix possible NULL pointer dereference
rtnetlink: remove IFLA_BOND_SLAVE definition
rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info
qlcnic: update version to 5.3.55
qlcnic: Enhance logic to calculate msix vectors.
qlcnic: Refactor interrupt coalescing code for all adapters.
qlcnic: Update poll controller code path
qlcnic: Interrupt code cleanup
qlcnic: Enhance Tx timeout debugging.
qlcnic: Use bool for rx_mac_learn.
bonding: fix u64 division
rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC
sfc: Use the correct maximum TX DMA ring size for SFC9100
Add Shradha Shah as the sfc driver maintainer.
net/vxlan: Share RX skb de-marking and checksum checks with ovs
tulip: cleanup by using ARRAY_SIZE()
ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
net/cxgb4: Don't retrieve stats during recovery
...
423 lines
12 KiB
C
423 lines
12 KiB
C
#ifndef __KERNEL_PRINTK__
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#define __KERNEL_PRINTK__
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#include <stdarg.h>
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#include <linux/init.h>
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#include <linux/kern_levels.h>
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#include <linux/linkage.h>
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#include <linux/cache.h>
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extern const char linux_banner[];
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extern const char linux_proc_banner[];
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static inline int printk_get_level(const char *buffer)
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{
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if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
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switch (buffer[1]) {
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case '0' ... '7':
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case 'd': /* KERN_DEFAULT */
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return buffer[1];
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}
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}
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return 0;
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}
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static inline const char *printk_skip_level(const char *buffer)
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{
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if (printk_get_level(buffer)) {
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switch (buffer[1]) {
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case '0' ... '7':
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case 'd': /* KERN_DEFAULT */
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return buffer + 2;
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}
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}
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return buffer;
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}
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extern int console_printk[];
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#define console_loglevel (console_printk[0])
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#define default_message_loglevel (console_printk[1])
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#define minimum_console_loglevel (console_printk[2])
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#define default_console_loglevel (console_printk[3])
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static inline void console_silent(void)
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{
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console_loglevel = 0;
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}
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static inline void console_verbose(void)
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{
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if (console_loglevel)
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console_loglevel = 15;
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}
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struct va_format {
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const char *fmt;
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va_list *va;
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};
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/*
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* FW_BUG
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* Add this to a message where you are sure the firmware is buggy or behaves
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* really stupid or out of spec. Be aware that the responsible BIOS developer
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* should be able to fix this issue or at least get a concrete idea of the
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* problem by reading your message without the need of looking at the kernel
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* code.
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*
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* Use it for definite and high priority BIOS bugs.
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*
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* FW_WARN
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* Use it for not that clear (e.g. could the kernel messed up things already?)
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* and medium priority BIOS bugs.
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*
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* FW_INFO
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* Use this one if you want to tell the user or vendor about something
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* suspicious, but generally harmless related to the firmware.
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*
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* Use it for information or very low priority BIOS bugs.
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*/
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#define FW_BUG "[Firmware Bug]: "
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#define FW_WARN "[Firmware Warn]: "
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#define FW_INFO "[Firmware Info]: "
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/*
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* HW_ERR
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* Add this to a message for hardware errors, so that user can report
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* it to hardware vendor instead of LKML or software vendor.
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*/
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#define HW_ERR "[Hardware Error]: "
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/*
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* DEPRECATED
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* Add this to a message whenever you want to warn user space about the use
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* of a deprecated aspect of an API so they can stop using it
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*/
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#define DEPRECATED "[Deprecated]: "
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/*
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* Dummy printk for disabled debugging statements to use whilst maintaining
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* gcc's format and side-effect checking.
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*/
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static inline __printf(1, 2)
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int no_printk(const char *fmt, ...)
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{
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return 0;
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}
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#ifdef CONFIG_EARLY_PRINTK
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extern asmlinkage __printf(1, 2)
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void early_printk(const char *fmt, ...);
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void early_vprintk(const char *fmt, va_list ap);
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#else
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static inline __printf(1, 2) __cold
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void early_printk(const char *s, ...) { }
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#endif
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#ifdef CONFIG_PRINTK
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asmlinkage __printf(5, 0)
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int vprintk_emit(int facility, int level,
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const char *dict, size_t dictlen,
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const char *fmt, va_list args);
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asmlinkage __printf(1, 0)
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int vprintk(const char *fmt, va_list args);
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asmlinkage __printf(5, 6) __cold
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asmlinkage int printk_emit(int facility, int level,
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const char *dict, size_t dictlen,
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const char *fmt, ...);
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asmlinkage __printf(1, 2) __cold
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int printk(const char *fmt, ...);
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/*
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* Special printk facility for scheduler use only, _DO_NOT_USE_ !
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*/
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__printf(1, 2) __cold int printk_sched(const char *fmt, ...);
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/*
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* Please don't use printk_ratelimit(), because it shares ratelimiting state
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* with all other unrelated printk_ratelimit() callsites. Instead use
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* printk_ratelimited() or plain old __ratelimit().
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*/
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extern int __printk_ratelimit(const char *func);
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#define printk_ratelimit() __printk_ratelimit(__func__)
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extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
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unsigned int interval_msec);
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extern int printk_delay_msec;
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extern int dmesg_restrict;
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extern int kptr_restrict;
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extern void wake_up_klogd(void);
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void log_buf_kexec_setup(void);
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void __init setup_log_buf(int early);
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void dump_stack_set_arch_desc(const char *fmt, ...);
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void dump_stack_print_info(const char *log_lvl);
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void show_regs_print_info(const char *log_lvl);
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#else
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static inline __printf(1, 0)
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int vprintk(const char *s, va_list args)
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{
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return 0;
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}
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static inline __printf(1, 2) __cold
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int printk(const char *s, ...)
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{
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return 0;
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}
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static inline __printf(1, 2) __cold
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int printk_sched(const char *s, ...)
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{
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return 0;
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}
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static inline int printk_ratelimit(void)
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{
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return 0;
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}
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static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
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unsigned int interval_msec)
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{
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return false;
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}
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static inline void wake_up_klogd(void)
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{
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}
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static inline void log_buf_kexec_setup(void)
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{
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}
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static inline void setup_log_buf(int early)
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{
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}
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static inline void dump_stack_set_arch_desc(const char *fmt, ...)
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{
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}
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static inline void dump_stack_print_info(const char *log_lvl)
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{
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}
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static inline void show_regs_print_info(const char *log_lvl)
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{
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}
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#endif
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extern asmlinkage void dump_stack(void) __cold;
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#ifndef pr_fmt
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#define pr_fmt(fmt) fmt
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#endif
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#define pr_emerg(fmt, ...) \
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printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_alert(fmt, ...) \
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printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_crit(fmt, ...) \
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printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err(fmt, ...) \
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printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warning(fmt, ...) \
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printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warn pr_warning
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#define pr_notice(fmt, ...) \
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printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info(fmt, ...) \
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printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_cont(fmt, ...) \
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printk(KERN_CONT fmt, ##__VA_ARGS__)
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/* pr_devel() should produce zero code unless DEBUG is defined */
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#ifdef DEBUG
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#define pr_devel(fmt, ...) \
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printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_devel(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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#include <linux/dynamic_debug.h>
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/* If you are writing a driver, please use dev_dbg instead */
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#if defined(CONFIG_DYNAMIC_DEBUG)
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/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
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#define pr_debug(fmt, ...) \
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dynamic_pr_debug(fmt, ##__VA_ARGS__)
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#elif defined(DEBUG)
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#define pr_debug(fmt, ...) \
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printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_debug(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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/*
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* Print a one-time message (analogous to WARN_ONCE() et al):
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*/
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#ifdef CONFIG_PRINTK
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#define printk_once(fmt, ...) \
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({ \
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static bool __print_once __read_mostly; \
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\
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if (!__print_once) { \
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__print_once = true; \
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printk(fmt, ##__VA_ARGS__); \
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} \
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})
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#else
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#define printk_once(fmt, ...) \
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no_printk(fmt, ##__VA_ARGS__)
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#endif
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#define pr_emerg_once(fmt, ...) \
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printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_alert_once(fmt, ...) \
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printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_crit_once(fmt, ...) \
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printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err_once(fmt, ...) \
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printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warn_once(fmt, ...) \
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printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_notice_once(fmt, ...) \
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printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info_once(fmt, ...) \
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printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_cont_once(fmt, ...) \
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printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
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#if defined(DEBUG)
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#define pr_devel_once(fmt, ...) \
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printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_devel_once(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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/* If you are writing a driver, please use dev_dbg instead */
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#if defined(DEBUG)
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#define pr_debug_once(fmt, ...) \
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printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_debug_once(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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/*
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* ratelimited messages with local ratelimit_state,
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* no local ratelimit_state used in the !PRINTK case
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*/
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#ifdef CONFIG_PRINTK
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#define printk_ratelimited(fmt, ...) \
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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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\
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if (__ratelimit(&_rs)) \
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printk(fmt, ##__VA_ARGS__); \
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})
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#else
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#define printk_ratelimited(fmt, ...) \
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no_printk(fmt, ##__VA_ARGS__)
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#endif
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#define pr_emerg_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_alert_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_crit_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warn_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_notice_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
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/* no pr_cont_ratelimited, don't do that... */
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#if defined(DEBUG)
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#define pr_devel_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_devel_ratelimited(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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/* If you are writing a driver, please use dev_dbg instead */
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#if defined(CONFIG_DYNAMIC_DEBUG)
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/* descriptor check is first to prevent flooding with "callbacks suppressed" */
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#define pr_debug_ratelimited(fmt, ...) \
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do { \
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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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DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
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if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \
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__ratelimit(&_rs)) \
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__dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__); \
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} while (0)
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#elif defined(DEBUG)
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#define pr_debug_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_debug_ratelimited(fmt, ...) \
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no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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extern const struct file_operations kmsg_fops;
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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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extern void hex_dump_to_buffer(const void *buf, size_t len,
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int rowsize, int groupsize,
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char *linebuf, size_t linebuflen, bool ascii);
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#ifdef CONFIG_PRINTK
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extern void print_hex_dump(const char *level, const char *prefix_str,
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int prefix_type, int rowsize, int groupsize,
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const void *buf, size_t len, bool ascii);
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#if defined(CONFIG_DYNAMIC_DEBUG)
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#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
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dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true)
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#else
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extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
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const void *buf, size_t len);
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#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
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#else
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static inline void print_hex_dump(const char *level, const char *prefix_str,
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int prefix_type, int rowsize, int groupsize,
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const void *buf, size_t len, bool ascii)
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{
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}
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static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
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const void *buf, size_t len)
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{
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}
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#endif
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#if defined(CONFIG_DYNAMIC_DEBUG)
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#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
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groupsize, buf, len, ascii) \
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dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
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groupsize, buf, len, ascii)
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#else
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#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
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groupsize, buf, len, ascii) \
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print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
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groupsize, buf, len, ascii)
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#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
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#endif
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