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/linux-5.19.10/include/linux/
Dpid.h59 struct pid struct
73 extern struct pid init_struct_pid; argument
79 extern struct pid *pidfd_pid(const struct file *file);
80 struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags);
82 int pidfd_create(struct pid *pid, unsigned int flags);
84 static inline struct pid *get_pid(struct pid *pid) in get_pid() argument
86 if (pid) in get_pid()
87 refcount_inc(&pid->count); in get_pid()
88 return pid; in get_pid()
91 extern void put_pid(struct pid *pid);
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/linux-5.19.10/kernel/
Dpid.c48 struct pid init_struct_pid = {
105 void put_pid(struct pid *pid) in put_pid() argument
109 if (!pid) in put_pid()
112 ns = pid->numbers[pid->level].ns; in put_pid()
113 if (refcount_dec_and_test(&pid->count)) { in put_pid()
114 kmem_cache_free(ns->pid_cachep, pid); in put_pid()
122 struct pid *pid = container_of(rhp, struct pid, rcu); in delayed_put_pid() local
123 put_pid(pid); in delayed_put_pid()
126 void free_pid(struct pid *pid) in free_pid() argument
133 for (i = 0; i <= pid->level; i++) { in free_pid()
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/linux-5.19.10/arch/powerpc/mm/book3s64/
Dradix_tlb.c29 unsigned int pid, in tlbiel_radix_set_isa300() argument
36 rs = ((unsigned long)pid << PPC_BITLSHIFT(31)); in tlbiel_radix_set_isa300()
100 static __always_inline void __tlbiel_pid(unsigned long pid, int set, in __tlbiel_pid() argument
107 rs = ((unsigned long)pid) << PPC_BITLSHIFT(31); in __tlbiel_pid()
116 static __always_inline void __tlbie_pid(unsigned long pid, unsigned long ric) in __tlbie_pid() argument
121 rs = pid << PPC_BITLSHIFT(31); in __tlbie_pid()
130 static __always_inline void __tlbie_pid_lpid(unsigned long pid, in __tlbie_pid_lpid() argument
137 rs = (pid << PPC_BITLSHIFT(31)) | (lpid & ~(PPC_BITMASK(0, 31))); in __tlbie_pid_lpid()
173 static __always_inline void __tlbiel_va(unsigned long va, unsigned long pid, in __tlbiel_va() argument
180 rs = pid << PPC_BITLSHIFT(31); in __tlbiel_va()
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/linux-5.19.10/arch/x86/um/os-Linux/
Dregisters.c22 int save_i387_registers(int pid, unsigned long *fp_regs) in save_i387_registers() argument
24 if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) in save_i387_registers()
29 int save_fp_registers(int pid, unsigned long *fp_regs) in save_fp_registers() argument
37 if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) < 0) in save_fp_registers()
42 return save_i387_registers(pid, fp_regs); in save_fp_registers()
45 int restore_i387_registers(int pid, unsigned long *fp_regs) in restore_i387_registers() argument
47 if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0) in restore_i387_registers()
52 int restore_fp_registers(int pid, unsigned long *fp_regs) in restore_fp_registers() argument
59 if (ptrace(PTRACE_SETREGSET, pid, NT_X86_XSTATE, &iov) < 0) in restore_fp_registers()
64 return restore_i387_registers(pid, fp_regs); in restore_fp_registers()
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/linux-5.19.10/tools/testing/selftests/powerpc/signal/
Dsigreturn_kernel.c35 pid_t pid; in fork_child() local
37 pid = fork(); in fork_child()
38 if (pid == 0) { in fork_child()
43 return pid; in fork_child()
46 static int expect_segv(pid_t pid) in expect_segv() argument
50 waitpid(pid, &child_ret, 0); in expect_segv()
62 pid_t pid; in test_sigreturn_kernel() local
73 pid = fork_child(); in test_sigreturn_kernel()
74 expect_segv(pid); in test_sigreturn_kernel()
78 pid = fork_child(); in test_sigreturn_kernel()
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/linux-5.19.10/include/trace/events/
Doom.h17 __field( pid_t, pid)
23 __entry->pid = task->pid;
29 __entry->pid, __entry->comm, __entry->oom_score_adj)
75 TP_PROTO(int pid),
77 TP_ARGS(pid),
80 __field(int, pid)
84 __entry->pid = pid;
87 TP_printk("pid=%d", __entry->pid)
91 TP_PROTO(int pid),
93 TP_ARGS(pid),
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Dsched.h24 __field( pid_t, pid )
29 __entry->pid = t->pid;
32 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
149 __field( pid_t, pid )
156 __entry->pid = p->pid;
162 __entry->comm, __entry->pid, __entry->prio,
243 __entry->prev_pid = prev->pid;
247 __entry->next_pid = next->pid;
282 __field( pid_t, pid )
290 __entry->pid = p->pid;
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/linux-5.19.10/tools/testing/selftests/rlimits/
Drlimits-per-userns.c32 pid_t pid = getpid(); in setrlimit_nproc() local
38 warnx("(pid=%d): Setting RLIMIT_NPROC=%ld", pid, n); in setrlimit_nproc()
41 err(EXIT_FAILURE, "(pid=%d): setrlimit(RLIMIT_NPROC)", pid); in setrlimit_nproc()
46 pid_t pid = fork(); in fork_child() local
48 if (pid < 0) in fork_child()
51 if (pid > 0) in fork_child()
52 return pid; in fork_child()
54 pid = getpid(); in fork_child()
56 warnx("(pid=%d): New process starting ...", pid); in fork_child()
59 err(EXIT_FAILURE, "(pid=%d): prctl(PR_SET_PDEATHSIG)", pid); in fork_child()
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/linux-5.19.10/arch/um/os-Linux/
Dstart_up.c32 int pid = os_getpid(), ppid = getppid(); in ptrace_child() local
38 kill(pid, SIGKILL); in ptrace_child()
40 kill(pid, SIGSTOP); in ptrace_child()
48 if (sc_result == pid) in ptrace_child()
95 int pid, n, status; in start_ptraced_child() local
99 pid = fork(); in start_ptraced_child()
100 if (pid == 0) in start_ptraced_child()
102 else if (pid < 0) in start_ptraced_child()
105 CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED)); in start_ptraced_child()
112 return pid; in start_ptraced_child()
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Dhelper.c47 int pid, fds[2], ret, n; in run_helper() local
75 pid = clone(helper_child, (void *) sp, CLONE_VM, &data); in run_helper()
76 if (pid < 0) { in run_helper()
92 ret = pid; in run_helper()
100 CATCH_EINTR(waitpid(pid, NULL, __WALL)); in run_helper()
122 int pid, status, err; in run_helper_thread() local
129 pid = clone(proc, (void *) sp, flags, arg); in run_helper_thread()
130 if (pid < 0) { in run_helper_thread()
137 CATCH_EINTR(pid = waitpid(pid, &status, __WALL)); in run_helper_thread()
138 if (pid < 0) { in run_helper_thread()
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/linux-5.19.10/arch/um/os-Linux/skas/
Dprocess.c27 int is_skas_winch(int pid, int fd, void *data) in is_skas_winch() argument
29 return pid == getpgrp(); in is_skas_winch()
80 static int ptrace_dump_regs(int pid) in ptrace_dump_regs() argument
85 if (ptrace(PTRACE_GETREGS, pid, 0, regs) < 0) in ptrace_dump_regs()
107 void wait_stub_done(int pid) in wait_stub_done() argument
112 CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL)); in wait_stub_done()
119 err = ptrace(PTRACE_CONT, pid, 0, 0); in wait_stub_done()
131 err = ptrace_dump_regs(pid); in wait_stub_done()
136 "pid = %d, n = %d, errno = %d, status = 0x%x\n", pid, n, errno, in wait_stub_done()
143 static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs) in get_skas_faultinfo() argument
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/linux-5.19.10/tools/perf/scripts/perl/
Drw-by-pid.pl82 foreach my $pid (sort { ($reads{$b}{bytes_read} || 0) <=>
84 my $comm = $reads{$pid}{comm} || "";
85 my $total_reads = $reads{$pid}{total_reads} || 0;
86 my $bytes_requested = $reads{$pid}{bytes_requested} || 0;
87 my $bytes_read = $reads{$pid}{bytes_read} || 0;
89 printf("%6s %-20s %10s %10s %10s\n", $pid, $comm,
101 foreach my $pid (keys %reads) {
102 foreach my $error (keys %{$reads{$pid}{errors}}) {
103 my $comm = $reads{$pid}{comm} || "";
104 my $errcount = $reads{$pid}{errors}{$error} || 0;
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/linux-5.19.10/arch/um/include/shared/
Dregisters.h11 extern int save_i387_registers(int pid, unsigned long *fp_regs);
12 extern int restore_i387_registers(int pid, unsigned long *fp_regs);
13 extern int save_fp_registers(int pid, unsigned long *fp_regs);
14 extern int restore_fp_registers(int pid, unsigned long *fp_regs);
15 extern int save_fpx_registers(int pid, unsigned long *fp_regs);
16 extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
17 extern int save_registers(int pid, struct uml_pt_regs *regs);
18 extern int restore_pid_registers(int pid, struct uml_pt_regs *regs);
19 extern int init_pid_registers(int pid);
21 extern int get_fp_registers(int pid, unsigned long *regs);
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/linux-5.19.10/tools/testing/selftests/cgroup/
Dcgroup_util.c270 int pid = strtol(ptr, &ptr, 10); in cg_killall() local
272 if (pid == 0) in cg_killall()
278 if (kill(pid, SIGKILL)) in cg_killall()
303 int cg_enter(const char *cgroup, int pid) in cg_enter() argument
307 snprintf(pidbuf, sizeof(pidbuf), "%d", pid); in cg_enter()
325 int pid, retcode; in cg_run() local
327 pid = fork(); in cg_run()
328 if (pid < 0) { in cg_run()
329 return pid; in cg_run()
330 } else if (pid == 0) { in cg_run()
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Dtest_freezer.c59 static int cg_enter_and_wait_for_frozen(const char *cgroup, int pid, in cg_enter_and_wait_for_frozen() argument
69 ret = cg_enter(cgroup, pid); in cg_enter_and_wait_for_frozen()
403 int pid; in test_cgfreezer_mkdir() local
422 pid = cg_run_nowait(child, child_fn, NULL); in test_cgfreezer_mkdir()
423 if (pid < 0) in test_cgfreezer_mkdir()
512 int pid; in test_cgfreezer_migrate() local
528 pid = cg_run_nowait(cgroup[0], child_fn, NULL); in test_cgfreezer_migrate()
529 if (pid < 0) in test_cgfreezer_migrate()
541 if (cg_enter_and_wait_for_frozen(cgroup[1], pid, true)) in test_cgfreezer_migrate()
550 if (cg_enter_and_wait_for_frozen(cgroup[0], pid, false)) in test_cgfreezer_migrate()
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/linux-5.19.10/arch/powerpc/mm/
Dmmu_decl.h31 static inline void _tlbil_pid(unsigned int pid) in _tlbil_pid() argument
34 trace_tlbia(pid); in _tlbil_pid()
36 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) argument
40 extern void _tlbil_pid(unsigned int pid);
42 extern void _tlbil_pid_noind(unsigned int pid);
44 #define _tlbil_pid_noind(pid) _tlbil_pid(pid) argument
52 static inline void _tlbil_va(unsigned long address, unsigned int pid, in _tlbil_va() argument
56 trace_tlbie(0, 0, address, pid, 0, 0, 0); in _tlbil_va()
59 extern void _tlbil_va(unsigned long address, unsigned int pid,
62 extern void __tlbil_va(unsigned long address, unsigned int pid);
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/linux-5.19.10/Documentation/translations/zh_CN/accounting/
Dtaskstats.rst23 “pid”、“tid”、“任务”互换使用，用于描述由struct task_struct定义的标准
24 Linux任务。“每pid的统计数据”等价于“每任务的统计数据”。
35 （NETLINK_GENERIC族）然后发送指定pid或tgid的命令。响应消息中包含单个
36 任务的统计信息（若指定了pid）或进程所有任务汇总的统计信息（若指定了tgid）。
39 cpu掩码内的cpu上有任务退出时，每pid的统计信息将发送给注册成功的监听者。使用
44 记录也将发送给用户空间。后者包含线程组中所有线程（包括过去和现在）的每pid统计
59 struct taskstats是每pid和每tgid数据共用的计数结构体。它是版本化的，可在内核新增
71 1. 命令：由用户发送给内核。获取指定pid/tgid数据的命令包含一个类型为
72 TASKSTATS_CMD_ATTR_PID/TGID的属性，该属性包含u32的pid或tgid载荷。
73 pid/tgid指示用户空间要统计的任务/进程。
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/linux-5.19.10/tools/testing/selftests/ptrace/
Dget_syscall_info.c17 kill_tracee(pid_t pid) in kill_tracee() argument
19 if (!pid) in kill_tracee()
24 int rc = kill(pid, SIGKILL); in kill_tracee()
31 sys_ptrace(int request, pid_t pid, unsigned long addr, unsigned long data) in sys_ptrace() argument
33 return syscall(__NR_ptrace, request, pid, addr, data); in sys_ptrace()
38 kill_tracee(pid); \
77 pid_t pid = fork(); in TEST() local
79 ASSERT_LE(0, pid) { in TEST()
83 if (pid == 0) { in TEST()
85 pid = getpid(); in TEST()
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Dvmaccess.c26 int f, pid = fork(); in TEST() local
29 if (!pid) { in TEST()
38 sprintf(mm, "/proc/%d/mem", pid); in TEST()
42 f = kill(pid, SIGCONT); in TEST()
48 int s, k, pid = fork(); in TEST() local
50 if (!pid) { in TEST()
59 k = ptrace(PTRACE_ATTACH, pid, 0L, 0L); in TEST()
65 ASSERT_NE(k, pid); in TEST()
69 k = ptrace(PTRACE_ATTACH, pid, 0L, 0L); in TEST()
72 ASSERT_EQ(k, pid); in TEST()
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/linux-5.19.10/scripts/
Dbootgraph.pl86 my $pid = $2;
88 if (!defined($pidctr{$pid})) {
89 $func = "wait_" . $pid . "_1";
90 $pidctr{$pid} = 1;
92 $pidctr{$pid} = $pidctr{$pid} + 1;
93 $func = "wait_" . $pid . "_" . $pidctr{$pid};
102 $pids{$func} = $pid;
114 my $pid = $2;
115 my $func = "wait_" . $pid . "_" . $pidctr{$pid};
178 my $pid = $pids{$key};
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/linux-5.19.10/drivers/media/common/b2c2/
Dflexcop-hw-filter.c47 u16 pid, u16 mask) in flexcop_pid_group_filter() argument
51 v30c.pid_filter_30c_ext_ind_0_7.Group_PID = pid; in flexcop_pid_group_filter()
68 vpid.vregname.field = onoff ? pid : 0x1fff; \
75 u16 pid, int onoff) in flexcop_pid_Stream1_PID_ctrl() argument
82 u16 pid, int onoff) in flexcop_pid_Stream2_PID_ctrl() argument
89 u16 pid, int onoff) in flexcop_pid_PCR_PID_ctrl() argument
95 u16 pid, int onoff) in flexcop_pid_PMT_PID_ctrl() argument
101 u16 pid, int onoff) in flexcop_pid_EMM_PID_ctrl() argument
107 u16 pid, int onoff) in flexcop_pid_ECM_PID_ctrl() argument
113 int index, u16 pid, int onoff) in flexcop_pid_control() argument
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/linux-5.19.10/kernel/bpf/
Dbpf_task_storage.c123 struct pid *pid; in bpf_pid_task_storage_lookup_elem() local
127 pid = pidfd_get_pid(fd, &f_flags); in bpf_pid_task_storage_lookup_elem()
128 if (IS_ERR(pid)) in bpf_pid_task_storage_lookup_elem()
129 return ERR_CAST(pid); in bpf_pid_task_storage_lookup_elem()
135 task = pid_task(pid, PIDTYPE_PID); in bpf_pid_task_storage_lookup_elem()
144 put_pid(pid); in bpf_pid_task_storage_lookup_elem()
147 put_pid(pid); in bpf_pid_task_storage_lookup_elem()
157 struct pid *pid; in bpf_pid_task_storage_update_elem() local
161 pid = pidfd_get_pid(fd, &f_flags); in bpf_pid_task_storage_update_elem()
162 if (IS_ERR(pid)) in bpf_pid_task_storage_update_elem()
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/linux-5.19.10/drivers/net/wan/
Dhdlc_ppp.c66 u16 pid; /* protocol ID */ member
110 static inline struct proto *get_proto(struct net_device *dev, u16 pid) in get_proto() argument
114 switch (pid) { in get_proto()
126 static inline const char *proto_name(u16 pid) in proto_name() argument
128 switch (pid) { in proto_name()
204 static void ppp_tx_cp(struct net_device *dev, u16 pid, u8 code, in ppp_tx_cp() argument
217 if (pid == PID_LCP && (code == LCP_ECHO_REQ || code == LCP_ECHO_REPLY)) in ppp_tx_cp()
246 proto_name(pid), code_names[code], id, debug_buffer); in ppp_tx_cp()
249 ppp_hard_header(skb, dev, pid, NULL, NULL, 0); in ppp_tx_cp()
299 static void ppp_cp_event(struct net_device *dev, u16 pid, u16 event, u8 code, in ppp_cp_event() argument
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/linux-5.19.10/tools/testing/selftests/pidfd/
Dpidfd_wait.c34 static int sys_waitid(int which, pid_t pid, siginfo_t *info, int options, in sys_waitid() argument
37 return syscall(__NR_waitid, which, pid, info, options, ru); in sys_waitid()
50 pid_t pid; in TEST() local
58 pid = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL); in TEST()
59 ASSERT_NE(pid, 0); in TEST()
66 pid = sys_waitid(P_PIDFD, pidfd, &info, WEXITED, NULL); in TEST()
67 ASSERT_NE(pid, 0); in TEST()
71 pid = sys_clone3(&args); in TEST()
72 ASSERT_GE(pid, 0); in TEST()
74 if (pid == 0) in TEST()
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/linux-5.19.10/tools/testing/selftests/clone3/
Dclone3_set_tid.c47 pid_t pid = -1; in call_clone3_set_tid() local
56 pid = sys_clone3(&args, sizeof(args)); in call_clone3_set_tid()
57 if (pid < 0) { in call_clone3_set_tid()
63 if (pid == 0) { in call_clone3_set_tid()
98 if (expected_pid == 0 || expected_pid == pid) { in call_clone3_set_tid()
100 getpid(), pid); in call_clone3_set_tid()
104 expected_pid, pid); in call_clone3_set_tid()
108 if (waitpid(pid, &status, 0) < 0) { in call_clone3_set_tid()
156 pid_t pid, ns1, ns2, ns3, ns_pid; in main() local
257 pid = fork(); in main()
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