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authorPeter Zijlstra <peterz@infradead.org>2008-11-24 19:06:57 +0300
committerIngo Molnar <mingo@elte.hu>2009-01-07 20:52:44 +0300
commit490dea45d00f01847ebebd007685d564aaf2cd98 (patch)
treea1f559fd497b10c21479b378ffb262d517cb627b /include/linux/init_task.h
parentede6f5aea054d3fb67c78857f7abdee602302043 (diff)
downloadlinux-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.h6
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;