The patch titled signals: split do_tkill has been added to the -mm tree. Its filename is signals-split-do_tkill.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: signals: split do_tkill From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> sys_kill() has a counterpart sys_tgkill which allows to send signals to a particular thread. sys_rt_sigqueueinfo is lacking such a counterpart. Aside of the asymmetry it is a show stopper for migrating applications from other unix-alike RTOSes. The following patch series implements rt_tgsigqueueinfo and hooks it up for x86. This patch: Split out the code from do_tkill to make it reusable by the follow up patch which implements sys_rt_tgsigqueueinfo Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Roland McGrath <roland@xxxxxxxxxx> Cc: Ulrich Drepper <drepper@xxxxxxxxxx> Cc: <linux-abi@xxxxxxxxxxxxxxx> Cc: <linux-arch@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/signal.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff -puN kernel/signal.c~signals-split-do_tkill kernel/signal.c --- a/kernel/signal.c~signals-split-do_tkill +++ a/kernel/signal.c @@ -2278,24 +2278,17 @@ SYSCALL_DEFINE2(kill, pid_t, pid, int, s return kill_something_info(sig, &info, pid); } -static int do_tkill(pid_t tgid, pid_t pid, int sig) +static int +do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info) { - int error; - struct siginfo info; struct task_struct *p; unsigned long flags; - - error = -ESRCH; - info.si_signo = sig; - info.si_errno = 0; - info.si_code = SI_TKILL; - info.si_pid = task_tgid_vnr(current); - info.si_uid = current_uid(); + int error = -ESRCH; rcu_read_lock(); p = find_task_by_vpid(pid); if (p && (tgid <= 0 || task_tgid_vnr(p) == tgid)) { - error = check_kill_permission(sig, &info, p); + error = check_kill_permission(sig, info, p); /* * The null signal is a permissions and process existence * probe. No signal is actually delivered. @@ -2305,7 +2298,7 @@ static int do_tkill(pid_t tgid, pid_t pi * signal is private anyway. */ if (!error && sig && lock_task_sighand(p, &flags)) { - error = specific_send_sig_info(sig, &info, p); + error = specific_send_sig_info(sig, info, p); unlock_task_sighand(p, &flags); } } @@ -2314,6 +2307,19 @@ static int do_tkill(pid_t tgid, pid_t pi return error; } +static int do_tkill(pid_t tgid, pid_t pid, int sig) +{ + struct siginfo info; + + info.si_signo = sig; + info.si_errno = 0; + info.si_code = SI_TKILL; + info.si_pid = task_tgid_vnr(current); + info.si_uid = current_uid(); + + return do_send_specific(tgid, pid, sig, &info); +} + /** * sys_tgkill - send signal to one specific thread * @tgid: the thread group ID of the thread _ Patches currently in -mm which might be from tglx@xxxxxxxxxxxxx are origin.patch introduce-debug_kmap_atomic.patch use-debug_kmap_atomic.patch linux-next.patch thinkpad-acpi-split-delayed-leds-stuff-clean-up-code.patch x86-simplify-highmem-related-kconfig-entries.patch clocksource-pass-clocksource-to-read-callback.patch clocksource-add-enable-and-disable-callbacks.patch clocksource-sanity-check-sysfs-clocksource-changes.patch kernel-time-tick-broadcastc-tick_broadcast_device-can-become-static.patch scsi-mpt-suppress-debugobjects-warning.patch signals-remove-handler-parameter-to-tracehook-functions.patch signals-split-do_tkill.patch signals-implement-sys_rt_tgsigqueueinfo.patch x86-hookup-sys_rt_tgsigqueueinfo.patch sgi-gru-exclude-uv-definitions-on-32-bit-x86.patch sgi-gru-add-definitions-of-x86_64-gru-mmrs.patch sgi-gru-add-macros-for-using-the-uv-hub-to-send-interrupts.patch preadv-pwritev-add-preadv-and-pwritev-system-calls.patch -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html