[PATCH] per-task-delay-accounting: setup
Initialization code related to collection of per-task "delay" statistics which measure how long it had to wait for cpu, sync block io, swapping etc. The collection of statistics and the interface are in other patches. This patch sets up the data structures and allows the statistics collection to be disabled through a kernel boot parameter. Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com> Signed-off-by: Balbir Singh <balbir@in.ibm.com> Cc: Jes Sorensen <jes@sgi.com> Cc: Peter Chubb <peterc@gelato.unsw.edu.au> Cc: Erich Focht <efocht@ess.nec.de> Cc: Levent Serinol <lserinol@gmail.com> Cc: Jay Lan <jlan@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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committed by
Linus Torvalds
parent
e8f4d97e1b
commit
ca74e92b46
10
init/Kconfig
10
init/Kconfig
@@ -158,6 +158,16 @@ config BSD_PROCESS_ACCT_V3
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for processing it. A preliminary version of these tools is available
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at <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>.
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config TASK_DELAY_ACCT
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bool "Enable per-task delay accounting (EXPERIMENTAL)"
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help
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Collect information on time spent by a task waiting for system
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resources like cpu, synchronous block I/O completion and swapping
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in pages. Such statistics can help in setting a task's priorities
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relative to other tasks for cpu, io, rss limits etc.
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Say N if unsure.
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config SYSCTL
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bool "Sysctl support" if EMBEDDED
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default y
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@@ -41,6 +41,7 @@
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#include <linux/cpu.h>
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#include <linux/cpuset.h>
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#include <linux/efi.h>
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#include <linux/delayacct.h>
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#include <linux/unistd.h>
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#include <linux/rmap.h>
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#include <linux/mempolicy.h>
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@@ -574,6 +575,7 @@ asmlinkage void __init start_kernel(void)
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proc_root_init();
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#endif
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cpuset_init();
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delayacct_init();
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check_bugs();
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