The patch titled
per task delay accounting taskstats interface: reduce version field size
has been added to the -mm tree. Its filename is
per-task-delay-accounting-delay-accounting-usage-of-taskstats-interface-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: per task delay accounting taskstats interface: reduce version field size
From: Shailabh Nagar <nagar@xxxxxxxxxxxxxx>
Replace the 64-bit version field in struct taskstats with a smaller field
and the padding needed to keep the recommended 64-bit alignment. Future
extensions to taskstats can replace the padding bits to store useful
fields. Since they will update the version number, backwards compatibility
is not an issue.
Thanks to Jay Lan for suggesting this space saving measure.
Signed-off-by: Jay Lan <jlan@xxxxxxxxxxxx>
Signed-off-by: Shailabh Nagar <nagar@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/taskstats.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN include/linux/taskstats.h~per-task-delay-accounting-delay-accounting-usage-of-taskstats-interface-fix include/linux/taskstats.h
--- a/include/linux/taskstats.h~per-task-delay-accounting-delay-accounting-usage-of-taskstats-interface-fix
+++ a/include/linux/taskstats.h
@@ -34,7 +34,11 @@
struct taskstats {
/* Version 1 */
- __u64 version;
+ __u16 version;
+ __u16 padding[3]; /* Userspace should not interpret the padding
+ * field which can be replaced by useful
+ * fields if struct taskstats is extended.
+ */
/* Delay accounting fields start
*
_
Patches currently in -mm which might be from nagar@xxxxxxxxxxxxxx are
netlink-improve-string-attribute-validation.patch
list_islast-utility.patch
per-task-delay-accounting-setup.patch
per-task-delay-accounting-sync-block-i-o-and-swapin-delay-collection.patch
per-task-delay-accounting-cpu-delay-collection-via-schedstats.patch
per-task-delay-accounting-utilities-for-genetlink-usage.patch
per-task-delay-accounting-taskstats-interface.patch
per-task-delay-accounting-taskstats-interface-fix.patch
per-task-delay-accounting-delay-accounting-usage-of-taskstats-interface.patch
per-task-delay-accounting-delay-accounting-usage-of-taskstats-interface-fix.patch
per-task-delay-accounting-documentation.patch
per-task-delay-accounting-proc-export-of-aggregated-block-i-o-delays.patch
delay-accounting-taskstats-interface-send-tgid-once.patch
per-task-delay-accounting-taskstats-interface-documentation-fix.patch
per-task-delay-accounting-avoid-send-without-listeners.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix-2.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix-3.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix-cleanup.patch
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix-cleanup-fix.patch
remove-down_write-from-taskstats-code-invoked-on-the-exit-path.patch
task-watchers-register-per-task-delay-accounting.patch
-
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