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| author | Eric W. Biederman <ebiederm@xmission.com> | 2017-09-26 20:06:43 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-07-21 17:43:12 +0200 |
| commit | 2c4704756cab7cfa031ada4dab361562f0e357c0 (patch) | |
| tree | 8757eb8762d60e34eeab747493759abf3f902c09 /arch/ia64/kernel/asm-offsets.c | |
| parent | kvm: Don't open code task_pid in kvm_vcpu_ioctl (diff) | |
| download | linux-2c4704756cab7cfa031ada4dab361562f0e357c0.tar.xz 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 'arch/ia64/kernel/asm-offsets.c')
| -rw-r--r-- | arch/ia64/kernel/asm-offsets.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c index f5433bb7f04a..c1f8a57855af 100644 --- a/arch/ia64/kernel/asm-offsets.c +++ b/arch/ia64/kernel/asm-offsets.c @@ -50,7 +50,7 @@ void foo(void) DEFINE(IA64_TASK_BLOCKED_OFFSET,offsetof (struct task_struct, blocked)); DEFINE(IA64_TASK_CLEAR_CHILD_TID_OFFSET,offsetof (struct task_struct, clear_child_tid)); - DEFINE(IA64_TASK_TGIDLINK_OFFSET, offsetof (struct task_struct, pids[PIDTYPE_PID].pid)); + DEFINE(IA64_TASK_THREAD_PID_OFFSET,offsetof (struct task_struct, thread_pid)); DEFINE(IA64_PID_LEVEL_OFFSET, offsetof (struct pid, level)); DEFINE(IA64_PID_UPID_OFFSET, offsetof (struct pid, numbers[0])); DEFINE(IA64_TASK_PENDING_OFFSET,offsetof (struct task_struct, pending)); |