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Subject[PATCH 3/8] kernel/signal.c: add kernel-doc notation to syscalls
From: Randy Dunlap <randy.dunlap@oracle.com>

Add kernel-doc to syscalls in signal.c.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
---
kernel/signal.c | 65 ++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 63 insertions(+), 2 deletions(-)
--- linux-2.6.38-git18.orig/kernel/signal.c
+++ linux-2.6.38-git18/kernel/signal.c
@@ -2075,6 +2075,9 @@ EXPORT_SYMBOL(unblock_all_signals);
* System call entry points.
*/

+/**
+ * sys_restart_syscall - restart a system call
+ */
SYSCALL_DEFINE0(restart_syscall)
{
struct restart_block *restart = &current_thread_info()->restart_block;
@@ -2128,6 +2131,13 @@ int sigprocmask(int how, sigset_t *set,
return error;
}

+/**
+ * sys_rt_sigprocmask - change the list of currently blocked signals
+ * @how: whether to add, remove, or set signals
+ * @set: stores pending signals
+ * @oset: previous value of signal mask if non-null
+ * @sigsetsize: size of sigset_t type
+ */
SYSCALL_DEFINE4(rt_sigprocmask, int, how, sigset_t __user *, set,
sigset_t __user *, oset, size_t, sigsetsize)
{
@@ -2188,6 +2198,12 @@ out:
return error;
}

+/**
+ * sys_rt_sigpending - examine a pending signal that has been raised
+ * while blocked
+ * @set: stores pending signals
+ * @sigsetsize: size of sigset_t type or larger
+ */
SYSCALL_DEFINE2(rt_sigpending, sigset_t __user *, set, size_t, sigsetsize)
{
return do_sigpending(set, sigsetsize);
@@ -2267,6 +2283,14 @@ int copy_siginfo_to_user(siginfo_t __use

#endif

+/**
+ * sys_rt_sigtimedwait - synchronously wait for queued signals specified
+ * in @uthese
+ * @uthese: queued signals to wait for
+ * @uinfo: if non-null, the signal's siginfo is returned here
+ * @uts: upper bound on process time suspension
+ * @sigsetsize: size of sigset_t type
+ */
SYSCALL_DEFINE4(rt_sigtimedwait, const sigset_t __user *, uthese,
siginfo_t __user *, uinfo, const struct timespec __user *, uts,
size_t, sigsetsize)
@@ -2344,6 +2368,11 @@ SYSCALL_DEFINE4(rt_sigtimedwait, const s
return ret;
}

+/**
+ * sys_kill - send a signal to a process
+ * @pid: the PID of the process
+ * @sig: signal to be sent
+ */
SYSCALL_DEFINE2(kill, pid_t, pid, int, sig)
{
struct siginfo info;
@@ -2419,7 +2448,11 @@ SYSCALL_DEFINE3(tgkill, pid_t, tgid, pid
return do_tkill(tgid, pid, sig);
}

-/*
+/**
+ * sys_tkill - send signal to one specific task
+ * @pid: the PID of the task
+ * @sig: signal to be sent
+ *
* Send a signal to only one task, even if it's a CLONE_THREAD task.
*/
SYSCALL_DEFINE2(tkill, pid_t, pid, int, sig)
@@ -2431,6 +2464,12 @@ SYSCALL_DEFINE2(tkill, pid_t, pid, int,
return do_tkill(0, pid, sig);
}

+/**
+ * sys_rt_sigqueueinfo - send signal information to a signal
+ * @pid: the PID of the thread
+ * @sig: signal to be sent
+ * @uinfo: signal info to be sent
+ */
SYSCALL_DEFINE3(rt_sigqueueinfo, pid_t, pid, int, sig,
siginfo_t __user *, uinfo)
{
@@ -2596,6 +2635,10 @@ out:

#ifdef __ARCH_WANT_SYS_SIGPENDING

+/**
+ * sys_sigpending - examine pending signals
+ * @set: where mask of pending signal is returned
+ */
SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, set)
{
return do_sigpending(set, sizeof(*set));
@@ -2604,7 +2647,12 @@ SYSCALL_DEFINE1(sigpending, old_sigset_t
#endif

#ifdef __ARCH_WANT_SYS_SIGPROCMASK
-/*
+/**
+ * sys_sigprocmask - examine and change blocked signals
+ * @how: whether to add, remove, or set signals
+ * @set: signals to add or remove (if non-null)
+ * @oset: previous value of signal mask if non-null
+ *
* Some platforms have their own version with special arguments;
* others support only sys_rt_sigprocmask.
*/
@@ -2660,6 +2708,13 @@ out:
#endif /* __ARCH_WANT_SYS_SIGPROCMASK */

#ifdef __ARCH_WANT_SYS_RT_SIGACTION
+/**
+ * sys_rt_sigaction - alter an action taken by a process
+ * @sig: signal to be sent
+ * @act: the thread group ID of the thread
+ * @oact: the PID of the thread
+ * @sigsetsize: size of sigset_t type
+ */
SYSCALL_DEFINE4(rt_sigaction, int, sig,
const struct sigaction __user *, act,
struct sigaction __user *, oact,
@@ -2746,6 +2801,12 @@ SYSCALL_DEFINE0(pause)
#endif

#ifdef __ARCH_WANT_SYS_RT_SIGSUSPEND
+/**
+ * sys_rt_sigsuspend - replace the signal mask for a value with the
+ * @unewset value until a signal is received
+ * @unewset: new signal mask value
+ * @sigsetsize: size of sigset_t type
+ */
SYSCALL_DEFINE2(rt_sigsuspend, sigset_t __user *, unewset, size_t, sigsetsize)
{
sigset_t newset;

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