1SYS_TGKILL(9)                    Driver Basics                   SYS_TGKILL(9)
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NAME

6       sys_tgkill - send signal to one specific thread
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SYNOPSIS

9       long sys_tgkill(pid_t tgid, pid_t pid, int sig);
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ARGUMENTS

12       tgid
13           the thread group ID of the thread
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15       pid
16           the PID of the thread
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18       sig
19           signal to be sent
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DESCRIPTION

22       This syscall also checks the tgid and returns -ESRCH even if the PID
23       exists but it´s not belonging to the target process anymore. This
24       method solves the problem of threads exiting and PIDs getting reused.
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27Kernel Hackers Manual 2.6.         June 2019                     SYS_TGKILL(9)
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