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| author |   Hugh Dickins <hugh@veritas.com> | 2005-10-29 18:16:19 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-29 21:40:39 -0700 |
| commit | f449952bc8bde7fbc73c6d20dff92b627a21f8b9 (patch) | |
| tree | 2d7dc4b7381274b1111c76e436b4a81d119f656a | |
| parent | [PATCH] mm: update_hiwaters just in time (diff) | |
| download | linux-dev-f449952bc8bde7fbc73c6d20dff92b627a21f8b9.tar.xz linux-dev-f449952bc8bde7fbc73c6d20dff92b627a21f8b9.zip | |
[PATCH] mm: mm_struct hiwaters moved
Slight and timid rearrangement of mm_struct: hiwater_rss and hiwater_vm were
tacked on the end, but it seems better to keep them near _file_rss, _anon_rss
and total_vm, in the same cacheline on those arches verified.
There are likely to be more profitable rearrangements, but less obvious (is it
good or bad that saved_auxv[AT_VECTOR_SIZE] isolates cpu_vm_mask and context
from many others?), needing serious instrumentation.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/linux/sched.h | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index a9c0b7d26303..292cb57ce38f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -291,16 +291,19 @@ struct mm_struct { * by mmlist_lock */ - unsigned long start_code, end_code, start_data, end_data; - unsigned long start_brk, brk, start_stack; - unsigned long arg_start, arg_end, env_start, env_end; - unsigned long total_vm, locked_vm, shared_vm; - unsigned long exec_vm, stack_vm, reserved_vm, def_flags, nr_ptes; - /* Special counters protected by the page_table_lock */ mm_counter_t _file_rss; mm_counter_t _anon_rss; + unsigned long hiwater_rss; /* High-watermark of RSS usage */ + unsigned long hiwater_vm; /* High-water virtual memory usage */ + + unsigned long total_vm, locked_vm, shared_vm, exec_vm; + unsigned long stack_vm, reserved_vm, def_flags, nr_ptes; + unsigned long start_code, end_code, start_data, end_data; + unsigned long start_brk, brk, start_stack; + unsigned long arg_start, arg_end, env_start, env_end; + unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */ unsigned dumpable:2; @@ -320,11 +323,7 @@ struct mm_struct { /* aio bits */ rwlock_t ioctx_list_lock; struct kioctx *ioctx_list; - struct kioctx default_kioctx; - - unsigned long hiwater_rss; /* High-water RSS usage */ - unsigned long hiwater_vm; /* High-water virtual memory usage */ }; struct sighand_struct { |