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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2017-09-26 13:06:43 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-07-21 10:43:12 -0500 |
| commit | 2c4704756cab7cfa031ada4dab361562f0e357c0 (patch) | |
| tree | 8757eb8762d60e34eeab747493759abf3f902c09 /include/linux/init_task.h | |
| parent | kvm: Don't open code task_pid in kvm_vcpu_ioctl (diff) | |
| download | wireguard-linux-2c4704756cab7cfa031ada4dab361562f0e357c0.tar.xz wireguard-linux-2c4704756cab7cfa031ada4dab361562f0e357c0.zip | |
pids: Move the pgrp and session pid pointers from task_struct to signal_struct
To access these fields the code always has to go to group leader so
going to signal struct is no loss and is actually a fundamental simplification.
This saves a little bit of memory by only allocating the pid pointer array
once instead of once for every thread, and even better this removes a
few potential races caused by the fact that group_leader can be changed
by de_thread, while signal_struct can not.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/init_task.h')
| -rw-r--r-- | include/linux/init_task.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h index a454b8aeb938..a7083a45a26c 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -46,15 +46,6 @@ extern struct cred init_cred; #define INIT_CPU_TIMERS(s) #endif -#define INIT_PID_LINK(type) \ -{ \ - .node = { \ - .next = NULL, \ - .pprev = NULL, \ - }, \ - .pid = &init_struct_pid, \ -} - #define INIT_TASK_COMM "swapper" /* Attach to the init_task data structure for proper alignment */ |