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| author | Joe Korty <joe.korty@ccur.com> | 2008-12-04 02:58:19 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-04 13:06:03 +0300 |
| commit | affa219b60a11b3295637a97f5b1b8ef231490fc (patch) | |
| tree | 410004998119ec6066a3585a1b97f028d8d4d8a3 /arch/x86/include/asm/thread_info.h | |
| parent | c0515566f3117c44b0572559bcc3cb00899b0910 (diff) | |
| download | linux-affa219b60a11b3295637a97f5b1b8ef231490fc.tar.xz | |
x86: change thread_info's flag field back to 32 bits
Impact: pack struct thread_info more tightly
Change x86_64's thread_info 'flags' field back to __u32.
This was changed to 'unsigned long' when the thread_info*.h
for i386 and x86_64 were merged. Change it back. We can
do this as only 27 bits of 'flags' are actually used.
This change actually packs down thread_info by 64 bits:
32 bits are saved by the smaller flags, and 32 bits are
saved by the following 'mm_segment_t field' becoming
naturally 64-bit aligned.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/thread_info.h')
| -rw-r--r-- | arch/x86/include/asm/thread_info.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index e44d379faad2..8dbc57390d25 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -24,7 +24,7 @@ struct exec_domain; struct thread_info { struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ - unsigned long flags; /* low level flags */ + __u32 flags; /* low level flags */ __u32 status; /* thread synchronous flags */ __u32 cpu; /* current CPU */ int preempt_count; /* 0 => preemptable, |