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authorShailabh Nagar <nagar@watson.ibm.com>2006-07-14 03:24:40 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-15 00:53:56 -0400
commitc757249af152c59fd74b85e52e8c090acb33d9c0 (patch)
tree78495f661fe537bf5087b24e6577659de8725b5a /init
parentfb0ba6bd021248b6bdc58a7b1213a55a6776a38a (diff)
[PATCH] per-task-delay-accounting: taskstats interface
Create a "taskstats" interface based on generic netlink (NETLINK_GENERIC family), for getting statistics of tasks and thread groups during their lifetime and when they exit. The interface is intended for use by multiple accounting packages though it is being created in the context of delay accounting. This patch creates the interface without populating the fields of the data that is sent to the user in response to a command or upon the exit of a task. Each accounting package interested in using taskstats has to provide an additional patch to add its stats to the common structure. [akpm@osdl.org: cleanups, Kconfig fix] Signed-off-by: Shailabh Nagar <nagar@us.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>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig13
-rw-r--r--init/main.c2
2 files changed, 15 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 90498a3e53da..56a7093b4e4c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -158,6 +158,19 @@ config BSD_PROCESS_ACCT_V3
158 for processing it. A preliminary version of these tools is available 158 for processing it. A preliminary version of these tools is available
159 at <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>. 159 at <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>.
160 160
161config TASKSTATS
162 bool "Export task/process statistics through netlink (EXPERIMENTAL)"
163 depends on NET
164 default n
165 help
166 Export selected statistics for tasks/processes through the
167 generic netlink interface. Unlike BSD process accounting, the
168 statistics are available during the lifetime of tasks/processes as
169 responses to commands. Like BSD accounting, they are sent to user
170 space on task exit.
171
172 Say N if unsure.
173
161config TASK_DELAY_ACCT 174config TASK_DELAY_ACCT
162 bool "Enable per-task delay accounting (EXPERIMENTAL)" 175 bool "Enable per-task delay accounting (EXPERIMENTAL)"
163 help 176 help
diff --git a/init/main.c b/init/main.c
index 9e8e8c152142..8651a720a092 100644
--- a/init/main.c
+++ b/init/main.c
@@ -41,6 +41,7 @@
41#include <linux/cpu.h> 41#include <linux/cpu.h>
42#include <linux/cpuset.h> 42#include <linux/cpuset.h>
43#include <linux/efi.h> 43#include <linux/efi.h>
44#include <linux/taskstats_kern.h>
44#include <linux/delayacct.h> 45#include <linux/delayacct.h>
45#include <linux/unistd.h> 46#include <linux/unistd.h>
46#include <linux/rmap.h> 47#include <linux/rmap.h>
@@ -575,6 +576,7 @@ asmlinkage void __init start_kernel(void)
575 proc_root_init(); 576 proc_root_init();
576#endif 577#endif
577 cpuset_init(); 578 cpuset_init();
579 taskstats_init_early();
578 delayacct_init(); 580 delayacct_init();
579 581
580 check_bugs(); 582 check_bugs();