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signal/sig_kill.c: remove the limitation of kill(0, xx)

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since there are situation which send singal to idle thread already,

CONFIG_SCHED_CHILD_STATUS=y
CONFIG_SCHED_HAVE_PARENT=y

Signo SIGCHLD will send to parent group, when child exit

Change-Id: Iceb2ac41948c1c3418839a3b5de70985d48c75d1
Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2021-01-20 22:03:59 +08:00 committed by Abdelatif Guettouche
parent 81d917f741
commit a27fe37120
1 changed files with 1 additions and 1 deletions
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sched/signal/sig_kill.c
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@ -81,7 +81,7 @@ int nxsig_kill(pid_t pid, int signo)
/* We do not support sending signals to process groups */
if (pid <= 0)
if (pid < 0)
{
return -ENOSYS;
}