linux/arch/ia64
Eric W. Biederman 6883f81aac pid: Implement PIDTYPE_TGID
Everywhere except in the pid array we distinguish between a tasks pid and
a tasks tgid (thread group id).  Even in the enumeration we want that
distinction sometimes so we have added __PIDTYPE_TGID.  With leader_pid
we almost have an implementation of PIDTYPE_TGID in struct signal_struct.

Add PIDTYPE_TGID as a first class member of the pid_type enumeration and
into the pids array.  Then remove the __PIDTYPE_TGID special case and the
leader_pid in signal_struct.

The net size increase is just an extra pointer added to struct pid and
an extra pair of pointers of an hlist_node added to task_struct.

The effect on code maintenance is the removal of a number of special
cases today and the potential to remove many more special cases as
PIDTYPE_TGID gets used to it's fullest.  The long term potential
is allowing zombie thread group leaders to exit, which will remove
a lot more special cases in the code.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-07-21 10:43:12 -05:00
..
configs [IA64] refresh arch/ia64/configs/* using "make savedefconfig" 2014-09-23 11:09:29 -07:00
dig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hp dma-mapping updates for 4.18: 2018-06-04 10:58:12 -07:00
include Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-04 21:02:18 -07:00
kernel pid: Implement PIDTYPE_TGID 2018-07-21 10:43:12 -05:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci PCI/MSI: Don't set up INTx if MSI or MSI-X is enabled 2018-03-13 15:03:36 -05:00
scripts ia64: convert unwcheck.py to python3 2018-03-05 14:35:01 -08:00
sn treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
uv
install.sh
Kconfig ia64: disable CONFIG_PERFMON at least for now 2018-06-11 11:55:04 -07:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile kbuild: add machine size to CHECKFLAGS 2018-06-01 11:36:58 +09:00
module.lds License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00