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| author | Peter Zijlstra <peterz@infradead.org> | 2008-11-24 19:06:57 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-07 20:52:44 +0300 |
| commit | 490dea45d00f01847ebebd007685d564aaf2cd98 (patch) | |
| tree | a1f559fd497b10c21479b378ffb262d517cb627b /include/linux/init_task.h | |
| parent | ede6f5aea054d3fb67c78857f7abdee602302043 (diff) | |
| download | linux-490dea45d00f01847ebebd007685d564aaf2cd98.tar.xz | |
itimers: remove the per-cpu-ish-ness
Either we bounce once cacheline per cpu per tick, yielding n^2 bounces
or we just bounce a single..
Also, using per-cpu allocations for the thread-groups complicates the
per-cpu allocator in that its currently aimed to be a fixed sized
allocator and the only possible extention to that would be vmap based,
which is seriously constrained on 32 bit archs.
So making the per-cpu memory requirement depend on the number of
processes is an issue.
Lastly, it didn't deal with cpu-hotplug, although admittedly that might
be fixable.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/init_task.h')
| -rw-r--r-- | include/linux/init_task.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 2f3c2d4ef73b..ea0ea1a4c36f 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -48,6 +48,12 @@ extern struct fs_struct init_fs; .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ .rlim = INIT_RLIMITS, \ + .cputime = { .totals = { \ + .utime = cputime_zero, \ + .stime = cputime_zero, \ + .sum_exec_runtime = 0, \ + .lock = __SPIN_LOCK_UNLOCKED(sig.cputime.totals.lock), \ + }, }, \ } extern struct nsproxy init_nsproxy; |