diff options
author | Shailabh Nagar <nagar@watson.ibm.com> | 2006-07-14 03:24:46 -0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-15 00:53:57 -0400 |
commit | c8924363da07aec213e5d359f23eeae1fff91951 (patch) | |
tree | bef390d55719cf3f4b0d02c7efe03dd9ebc7321a /kernel/taskstats.c | |
parent | 9e06d3f9f6b14f6e3120923ed215032726246c98 (diff) |
[PATCH] per-task delay accounting: avoid send without listeners
Don't send taskstats (per-pid or per-tgid) on thread exit when no one is
listening for such data.
Currently the taskstats interface allocates a structure, fills it in and
calls netlink to send out per-pid and per-tgid stats regardless of whether
a userspace listener for the data exists (netlink layer would check for
that and avoid the multicast).
As a result of this patch, the check for the no-listener case is performed
early, avoiding the redundant allocation and filling up of the taskstats
structures.
Signed-off-by: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Shailabh Nagar <nagar@watson.ibm.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 'kernel/taskstats.c')
0 files changed, 0 insertions, 0 deletions