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Commit 4a98be82 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

Merge tag 'perf-core-for-mingo-5.1-20190311' of... 

Merge tag 'perf-core-for-mingo-5.1-20190311' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/urgent

Pull perf/core improvements and fixes from Arnaldo:

kernel:

  Stephane Eranian :

  - Restore mmap record type correctly when handling PERF_RECORD_MMAP2
    events, as the same template is used for all the threads interested
    in mmap events, some may want just PERF_RECORD_MMAP, while some
    may want the extra info in MMAP2 records.

perf probe:

  Adrian Hunter:

  - Fix getting the kernel map, because since changes related to x86 PTI
    entry trampolines handling, there are more than one kernel map.

perf script:

  Andi Kleen:

  - Support insn output for normal samples, i.e.:

    perf script -F ip,sym,insn --xed

    Will fetch the sample IP from the thread address space and feed it
    to Intel's XED disassembler, producing lines such as:

      ffffffffa4068804 native_write_msr            wrmsr
      ffffffffa415b95e __hrtimer_next_event_base   movq  0x18(%rax), %rdx

    That match 'perf annotate's output.

  - Make the --cpu filter apply to  PERF_RECORD_COMM/FORK/... events, in
    addition to PERF_RECORD_SAMPLE.

perf report:

  - Add a new --samples option to save a small random number of samples
    per hist entry, using a reservoir technique to select a representative
    number of samples.

    Then allow browsing the samples using 'perf script' as part of the hist
    entry context menu. This automatically adds the right filters, so only
    the thread or CPU of the sample is displayed. Then we use less' search
    functionality to directly jump to the time stamp of the selected sample.

    It uses different menus for assembler and source display.  Assembler
    needs xed installed and source needs debuginfo.

  - Fix the UI browser scripts pop up menu when there are many scripts
    available.

perf report:

  Andi Kleen:

  - Add 'time' sort option. E.g.:

    % perf report --sort time,overhead,symbol --time-quantum 1ms --stdio
    ...
         0.67%  277061.87300  [.] _dl_start
         0.50%  277061.87300  [.] f1
         0.50%  277061.87300  [.] f2
         0.33%  277061.87300  [.] main
         0.29%  277061.87300  [.] _dl_lookup_symbol_x
         0.29%  277061.87300  [.] dl_main
         0.29%  277061.87300  [.] do_lookup_x
         0.17%  277061.87300  [.] _dl_debug_initialize
         0.17%  277061.87300  [.] _dl_init_paths
         0.08%  277061.87300  [.] check_match
         0.04%  277061.87300  [.] _dl_count_modids
         1.33%  277061.87400  [.] f1
         1.33%  277061.87400  [.] f2
         1.33%  277061.87400  [.] main
         1.17%  277061.87500  [.] main
         1.08%  277061.87500  [.] f1
         1.08%  277061.87500  [.] f2
         1.00%  277061.87600  [.] main
         0.83%  277061.87600  [.] f1
         0.83%  277061.87600  [.] f2
         1.00%  277061.87700  [.] main

tools headers:

  Arnaldo Carvalho de Melo:

  - Update x86's syscall_64.tbl, no change in tools/perf behaviour.

  -  Sync copies asm-generic/unistd.h and linux/in with the kernel sources.

perf data:

  Jiri Olsa:

  - Prep work to support having perf.data stored as a directory, with one
    file per CPU, that ultimately will allow having one ring buffer reading
    thread per CPU.

Vendor events:

  Martin Liška:

  - perf PMU events for AMD Family 17h.

perf script python:

  Tony Jones:

  - Add python3 support for the remaining Intel PT related scripts, with
    these we should have a clean build of perf with python3 while still
    supporting the build with python2.

libbpf:

  Arnaldo Carvalho de Melo:

  - Fix the build on uCLibc, adding the missing stdarg.h since we use
    va_list in one typedef.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parents c634dc6b dfcbc2f2

kernel/events/core.c

+2 −0
Original line number Diff line number Diff line
@@ -7189,6 +7189,7 @@ static void perf_event_mmap_output(struct perf_event *event, 
	struct perf_output_handle handle;

	struct perf_sample_data sample;

	int size = mmap_event->event_id.header.size;

	u32 type = mmap_event->event_id.header.type;

	int ret;



	if (!perf_event_mmap_match(event, data))
@@ -7232,6 +7233,7 @@ static void perf_event_mmap_output(struct perf_event *event, 
	perf_output_end(&handle);

out:

	mmap_event->event_id.header.size = size;

	mmap_event->event_id.header.type = type;

}



static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)

tools/arch/arm64/include/uapi/asm/unistd.h

+2 −0
Original line number Diff line number Diff line
@@ -17,5 +17,7 @@ 


#define __ARCH_WANT_RENAMEAT

#define __ARCH_WANT_NEW_STAT

#define __ARCH_WANT_SET_GET_RLIMIT

#define __ARCH_WANT_TIME32_SYSCALLS



#include <asm-generic/unistd.h>

tools/include/uapi/asm-generic/unistd.h

+116 −33
Original line number Diff line number Diff line
@@ -38,8 +38,10 @@ __SYSCALL(__NR_io_destroy, sys_io_destroy) 
__SC_COMP(__NR_io_submit, sys_io_submit, compat_sys_io_submit)

#define __NR_io_cancel 3

__SYSCALL(__NR_io_cancel, sys_io_cancel)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_io_getevents 4

__SC_COMP(__NR_io_getevents, sys_io_getevents, compat_sys_io_getevents)

__SC_3264(__NR_io_getevents, sys_io_getevents_time32, sys_io_getevents)

#endif



/* fs/xattr.c */

#define __NR_setxattr 5
@@ -179,7 +181,7 @@ __SYSCALL(__NR_fchownat, sys_fchownat) 
#define __NR_fchown 55

__SYSCALL(__NR_fchown, sys_fchown)

#define __NR_openat 56

__SC_COMP(__NR_openat, sys_openat, compat_sys_openat)

__SYSCALL(__NR_openat, sys_openat)

#define __NR_close 57

__SYSCALL(__NR_close, sys_close)

#define __NR_vhangup 58
@@ -222,10 +224,12 @@ __SC_COMP(__NR_pwritev, sys_pwritev, compat_sys_pwritev) 
__SYSCALL(__NR3264_sendfile, sys_sendfile64)



/* fs/select.c */

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_pselect6 72

__SC_COMP(__NR_pselect6, sys_pselect6, compat_sys_pselect6)

__SC_COMP_3264(__NR_pselect6, sys_pselect6_time32, sys_pselect6, compat_sys_pselect6_time32)

#define __NR_ppoll 73

__SC_COMP(__NR_ppoll, sys_ppoll, compat_sys_ppoll)

__SC_COMP_3264(__NR_ppoll, sys_ppoll_time32, sys_ppoll, compat_sys_ppoll_time32)

#endif



/* fs/signalfd.c */

#define __NR_signalfd4 74
@@ -269,16 +273,20 @@ __SC_COMP(__NR_sync_file_range, sys_sync_file_range, \ 
/* fs/timerfd.c */

#define __NR_timerfd_create 85

__SYSCALL(__NR_timerfd_create, sys_timerfd_create)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_timerfd_settime 86

__SC_COMP(__NR_timerfd_settime, sys_timerfd_settime, \

	  compat_sys_timerfd_settime)

__SC_3264(__NR_timerfd_settime, sys_timerfd_settime32, \

	  sys_timerfd_settime)

#define __NR_timerfd_gettime 87

__SC_COMP(__NR_timerfd_gettime, sys_timerfd_gettime, \

	  compat_sys_timerfd_gettime)

__SC_3264(__NR_timerfd_gettime, sys_timerfd_gettime32, \

	  sys_timerfd_gettime)

#endif



/* fs/utimes.c */

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_utimensat 88

__SC_COMP(__NR_utimensat, sys_utimensat, compat_sys_utimensat)

__SC_3264(__NR_utimensat, sys_utimensat_time32, sys_utimensat)

#endif



/* kernel/acct.c */

#define __NR_acct 89
@@ -309,8 +317,10 @@ __SYSCALL(__NR_set_tid_address, sys_set_tid_address) 
__SYSCALL(__NR_unshare, sys_unshare)



/* kernel/futex.c */

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_futex 98

__SC_COMP(__NR_futex, sys_futex, compat_sys_futex)

__SC_3264(__NR_futex, sys_futex_time32, sys_futex)

#endif

#define __NR_set_robust_list 99

__SC_COMP(__NR_set_robust_list, sys_set_robust_list, \

	  compat_sys_set_robust_list)
@@ -319,8 +329,10 @@ __SC_COMP(__NR_get_robust_list, sys_get_robust_list, \ 
	  compat_sys_get_robust_list)



/* kernel/hrtimer.c */

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_nanosleep 101

__SC_COMP(__NR_nanosleep, sys_nanosleep, compat_sys_nanosleep)

__SC_3264(__NR_nanosleep, sys_nanosleep_time32, sys_nanosleep)

#endif



/* kernel/itimer.c */

#define __NR_getitimer 102
@@ -341,23 +353,29 @@ __SYSCALL(__NR_delete_module, sys_delete_module) 
/* kernel/posix-timers.c */

#define __NR_timer_create 107

__SC_COMP(__NR_timer_create, sys_timer_create, compat_sys_timer_create)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_timer_gettime 108

__SC_COMP(__NR_timer_gettime, sys_timer_gettime, compat_sys_timer_gettime)

__SC_3264(__NR_timer_gettime, sys_timer_gettime32, sys_timer_gettime)

#endif

#define __NR_timer_getoverrun 109

__SYSCALL(__NR_timer_getoverrun, sys_timer_getoverrun)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_timer_settime 110

__SC_COMP(__NR_timer_settime, sys_timer_settime, compat_sys_timer_settime)

__SC_3264(__NR_timer_settime, sys_timer_settime32, sys_timer_settime)

#endif

#define __NR_timer_delete 111

__SYSCALL(__NR_timer_delete, sys_timer_delete)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_clock_settime 112

__SC_COMP(__NR_clock_settime, sys_clock_settime, compat_sys_clock_settime)

__SC_3264(__NR_clock_settime, sys_clock_settime32, sys_clock_settime)

#define __NR_clock_gettime 113

__SC_COMP(__NR_clock_gettime, sys_clock_gettime, compat_sys_clock_gettime)

__SC_3264(__NR_clock_gettime, sys_clock_gettime32, sys_clock_gettime)

#define __NR_clock_getres 114

__SC_COMP(__NR_clock_getres, sys_clock_getres, compat_sys_clock_getres)

__SC_3264(__NR_clock_getres, sys_clock_getres_time32, sys_clock_getres)

#define __NR_clock_nanosleep 115

__SC_COMP(__NR_clock_nanosleep, sys_clock_nanosleep, \

	  compat_sys_clock_nanosleep)

__SC_3264(__NR_clock_nanosleep, sys_clock_nanosleep_time32, \

	  sys_clock_nanosleep)

#endif



/* kernel/printk.c */

#define __NR_syslog 116
@@ -388,9 +406,11 @@ __SYSCALL(__NR_sched_yield, sys_sched_yield) 
__SYSCALL(__NR_sched_get_priority_max, sys_sched_get_priority_max)

#define __NR_sched_get_priority_min 126

__SYSCALL(__NR_sched_get_priority_min, sys_sched_get_priority_min)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_sched_rr_get_interval 127

__SC_COMP(__NR_sched_rr_get_interval, sys_sched_rr_get_interval, \

	  compat_sys_sched_rr_get_interval)

__SC_3264(__NR_sched_rr_get_interval, sys_sched_rr_get_interval_time32, \

	  sys_sched_rr_get_interval)

#endif



/* kernel/signal.c */

#define __NR_restart_syscall 128
@@ -411,9 +431,11 @@ __SC_COMP(__NR_rt_sigaction, sys_rt_sigaction, compat_sys_rt_sigaction) 
__SC_COMP(__NR_rt_sigprocmask, sys_rt_sigprocmask, compat_sys_rt_sigprocmask)

#define __NR_rt_sigpending 136

__SC_COMP(__NR_rt_sigpending, sys_rt_sigpending, compat_sys_rt_sigpending)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_rt_sigtimedwait 137

__SC_COMP(__NR_rt_sigtimedwait, sys_rt_sigtimedwait, \

	  compat_sys_rt_sigtimedwait)

__SC_COMP_3264(__NR_rt_sigtimedwait, sys_rt_sigtimedwait_time32, \

	  sys_rt_sigtimedwait, compat_sys_rt_sigtimedwait_time32)

#endif

#define __NR_rt_sigqueueinfo 138

__SC_COMP(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo, \

	  compat_sys_rt_sigqueueinfo)
@@ -467,10 +489,15 @@ __SYSCALL(__NR_uname, sys_newuname) 
__SYSCALL(__NR_sethostname, sys_sethostname)

#define __NR_setdomainname 162

__SYSCALL(__NR_setdomainname, sys_setdomainname)



#ifdef __ARCH_WANT_SET_GET_RLIMIT

/* getrlimit and setrlimit are superseded with prlimit64 */

#define __NR_getrlimit 163

__SC_COMP(__NR_getrlimit, sys_getrlimit, compat_sys_getrlimit)

#define __NR_setrlimit 164

__SC_COMP(__NR_setrlimit, sys_setrlimit, compat_sys_setrlimit)

#endif



#define __NR_getrusage 165

__SC_COMP(__NR_getrusage, sys_getrusage, compat_sys_getrusage)

#define __NR_umask 166
@@ -481,12 +508,14 @@ __SYSCALL(__NR_prctl, sys_prctl) 
__SYSCALL(__NR_getcpu, sys_getcpu)



/* kernel/time.c */

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_gettimeofday 169

__SC_COMP(__NR_gettimeofday, sys_gettimeofday, compat_sys_gettimeofday)

#define __NR_settimeofday 170

__SC_COMP(__NR_settimeofday, sys_settimeofday, compat_sys_settimeofday)

#define __NR_adjtimex 171

__SC_COMP(__NR_adjtimex, sys_adjtimex, compat_sys_adjtimex)

__SC_3264(__NR_adjtimex, sys_adjtimex_time32, sys_adjtimex)

#endif



/* kernel/timer.c */

#define __NR_getpid 172
@@ -511,11 +540,13 @@ __SC_COMP(__NR_sysinfo, sys_sysinfo, compat_sys_sysinfo) 
__SC_COMP(__NR_mq_open, sys_mq_open, compat_sys_mq_open)

#define __NR_mq_unlink 181

__SYSCALL(__NR_mq_unlink, sys_mq_unlink)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_mq_timedsend 182

__SC_COMP(__NR_mq_timedsend, sys_mq_timedsend, compat_sys_mq_timedsend)

__SC_3264(__NR_mq_timedsend, sys_mq_timedsend_time32, sys_mq_timedsend)

#define __NR_mq_timedreceive 183

__SC_COMP(__NR_mq_timedreceive, sys_mq_timedreceive, \

	  compat_sys_mq_timedreceive)

__SC_3264(__NR_mq_timedreceive, sys_mq_timedreceive_time32, \

	  sys_mq_timedreceive)

#endif

#define __NR_mq_notify 184

__SC_COMP(__NR_mq_notify, sys_mq_notify, compat_sys_mq_notify)

#define __NR_mq_getsetattr 185
@@ -536,8 +567,10 @@ __SC_COMP(__NR_msgsnd, sys_msgsnd, compat_sys_msgsnd) 
__SYSCALL(__NR_semget, sys_semget)

#define __NR_semctl 191

__SC_COMP(__NR_semctl, sys_semctl, compat_sys_semctl)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_semtimedop 192

__SC_COMP(__NR_semtimedop, sys_semtimedop, compat_sys_semtimedop)

__SC_COMP(__NR_semtimedop, sys_semtimedop, sys_semtimedop_time32)

#endif

#define __NR_semop 193

__SYSCALL(__NR_semop, sys_semop)
@@ -658,8 +691,10 @@ __SC_COMP(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo, \ 
__SYSCALL(__NR_perf_event_open, sys_perf_event_open)

#define __NR_accept4 242

__SYSCALL(__NR_accept4, sys_accept4)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_recvmmsg 243

__SC_COMP(__NR_recvmmsg, sys_recvmmsg, compat_sys_recvmmsg)

__SC_COMP_3264(__NR_recvmmsg, sys_recvmmsg_time32, sys_recvmmsg, compat_sys_recvmmsg_time32)

#endif



/*

 * Architectures may provide up to 16 syscalls of their own
@@ -667,8 +702,10 @@ __SC_COMP(__NR_recvmmsg, sys_recvmmsg, compat_sys_recvmmsg) 
 */

#define __NR_arch_specific_syscall 244



#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_wait4 260

__SC_COMP(__NR_wait4, sys_wait4, compat_sys_wait4)

#endif

#define __NR_prlimit64 261

__SYSCALL(__NR_prlimit64, sys_prlimit64)

#define __NR_fanotify_init 262
@@ -678,10 +715,11 @@ __SYSCALL(__NR_fanotify_mark, sys_fanotify_mark) 
#define __NR_name_to_handle_at         264

__SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)

#define __NR_open_by_handle_at         265

__SC_COMP(__NR_open_by_handle_at, sys_open_by_handle_at, \

	  compat_sys_open_by_handle_at)

__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_clock_adjtime 266

__SC_COMP(__NR_clock_adjtime, sys_clock_adjtime, compat_sys_clock_adjtime)

__SC_3264(__NR_clock_adjtime, sys_clock_adjtime32, sys_clock_adjtime)

#endif

#define __NR_syncfs 267

__SYSCALL(__NR_syncfs, sys_syncfs)

#define __NR_setns 268
@@ -734,15 +772,60 @@ __SYSCALL(__NR_pkey_alloc, sys_pkey_alloc) 
__SYSCALL(__NR_pkey_free,     sys_pkey_free)

#define __NR_statx 291

__SYSCALL(__NR_statx,     sys_statx)

#if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32

#define __NR_io_pgetevents 292

__SC_COMP(__NR_io_pgetevents, sys_io_pgetevents, compat_sys_io_pgetevents)

__SC_COMP_3264(__NR_io_pgetevents, sys_io_pgetevents_time32, sys_io_pgetevents, compat_sys_io_pgetevents)

#endif

#define __NR_rseq 293

__SYSCALL(__NR_rseq, sys_rseq)

#define __NR_kexec_file_load 294

__SYSCALL(__NR_kexec_file_load,     sys_kexec_file_load)

/* 295 through 402 are unassigned to sync up with generic numbers, don't use */

#if __BITS_PER_LONG == 32

#define __NR_clock_gettime64 403

__SYSCALL(__NR_clock_gettime64, sys_clock_gettime)

#define __NR_clock_settime64 404

__SYSCALL(__NR_clock_settime64, sys_clock_settime)

#define __NR_clock_adjtime64 405

__SYSCALL(__NR_clock_adjtime64, sys_clock_adjtime)

#define __NR_clock_getres_time64 406

__SYSCALL(__NR_clock_getres_time64, sys_clock_getres)

#define __NR_clock_nanosleep_time64 407

__SYSCALL(__NR_clock_nanosleep_time64, sys_clock_nanosleep)

#define __NR_timer_gettime64 408

__SYSCALL(__NR_timer_gettime64, sys_timer_gettime)

#define __NR_timer_settime64 409

__SYSCALL(__NR_timer_settime64, sys_timer_settime)

#define __NR_timerfd_gettime64 410

__SYSCALL(__NR_timerfd_gettime64, sys_timerfd_gettime)

#define __NR_timerfd_settime64 411

__SYSCALL(__NR_timerfd_settime64, sys_timerfd_settime)

#define __NR_utimensat_time64 412

__SYSCALL(__NR_utimensat_time64, sys_utimensat)

#define __NR_pselect6_time64 413

__SC_COMP(__NR_pselect6_time64, sys_pselect6, compat_sys_pselect6_time64)

#define __NR_ppoll_time64 414

__SC_COMP(__NR_ppoll_time64, sys_ppoll, compat_sys_ppoll_time64)

#define __NR_io_pgetevents_time64 416

__SYSCALL(__NR_io_pgetevents_time64, sys_io_pgetevents)

#define __NR_recvmmsg_time64 417

__SC_COMP(__NR_recvmmsg_time64, sys_recvmmsg, compat_sys_recvmmsg_time64)

#define __NR_mq_timedsend_time64 418

__SYSCALL(__NR_mq_timedsend_time64, sys_mq_timedsend)

#define __NR_mq_timedreceive_time64 419

__SYSCALL(__NR_mq_timedreceive_time64, sys_mq_timedreceive)

#define __NR_semtimedop_time64 420

__SYSCALL(__NR_semtimedop_time64, sys_semtimedop)

#define __NR_rt_sigtimedwait_time64 421

__SC_COMP(__NR_rt_sigtimedwait_time64, sys_rt_sigtimedwait, compat_sys_rt_sigtimedwait_time64)

#define __NR_futex_time64 422

__SYSCALL(__NR_futex_time64, sys_futex)

#define __NR_sched_rr_get_interval_time64 423

__SYSCALL(__NR_sched_rr_get_interval_time64, sys_sched_rr_get_interval)

#endif



#undef __NR_syscalls

#define __NR_syscalls 295

#define __NR_syscalls 424



/*

 * 32 bit systems traditionally used different

tools/include/uapi/linux/in.h

+5 −4
Original line number Diff line number Diff line
@@ -295,6 +295,7 @@ struct sockaddr_in { 
#define INADDR_UNSPEC_GROUP		0xe0000000U	/* 224.0.0.0   */

#define INADDR_ALLHOSTS_GROUP		0xe0000001U	/* 224.0.0.1   */

#define INADDR_ALLRTRS_GROUP		0xe0000002U	/* 224.0.0.2 */

#define INADDR_ALLSNOOPERS_GROUP	0xe000006aU	/* 224.0.0.106 */

#define INADDR_MAX_LOCAL_GROUP		0xe00000ffU	/* 224.0.0.255 */

#endif

tools/lib/bpf/libbpf.h

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#ifndef __LIBBPF_LIBBPF_H

#define __LIBBPF_LIBBPF_H



#include <stdarg.h>

#include <stdio.h>

#include <stdint.h>

#include <stdbool.h>