Commit-ID: d0959024d8fb6555ba8bfdc6624cc7b7c2e675fd
Gitweb: http://git.kernel.org/tip/d0959024d8fb6555ba8bfdc6624cc7b7c2e675fd
Author: Richard Kennedy <richard@xxxxxxxxxxxxxxx>
AuthorDate: Wed, 20 Oct 2010 15:57:30 -0700
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 21 Oct 2010 17:30:06 +0200
timer_list: Remove alignment padding on 64 bit when CONFIG_TIMER_STATS
Reorder struct timer_list to remove 8 bytes of alignment padding on 64
bit builds when CONFIG_TIMER_STATS is selected.
timer_list is widely used across the kernel so many structures will
benefit and shrink in size.
For example, with my config on x86_64
per_cpu_dm_data shrinks from 136 to 128 bytes
and
ahci_port_priv shrinks from 1032 to 968 bytes.
Signed-off-by: Richard Kennedy <richard@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/timer.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/timer.h b/include/linux/timer.h
index 38cf093..f3dccdb 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -24,9 +24,9 @@ struct timer_list {
int slack;
#ifdef CONFIG_TIMER_STATS
+ int start_pid;
void *start_site;
char start_comm[16];
- int start_pid;
#endif
#ifdef CONFIG_LOCKDEP
struct lockdep_map lockdep_map;
--
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