Reduce overhead of CONFIG_TIMER_STATS

Hi,
While looking at the pahole output for struct timer_list on
recent kernels I noticed that there is a 4 bytes padding on struct timer_list that gets propagated to many structs on 64 bits architectures:

[acme@doppio linux-2.6]$ pahole -C timer_list /tmp/tcp.o.before struct timer_list {

        struct list_head      entry;          /*     0    16 */
        long unsigned int     expires;        /*    16     8 */
        void                  (*function)(long unsigned int); /* 24     8 */
        long unsigned int     data;           /*    32     8 */
        struct tvec_t_base_s *base;           /*    40     8 */
        void *                start_site;     /*    48     8 */
        char                  start_comm[16]; /*    56    16 */
        /* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */
        int                   start_pid;      /*    72     4 */

        /* size: 80, cachelines: 2 */
        /* padding: 4 */
        /* last cacheline: 16 bytes */
};

[acme@doppio linux-2.6]$

So the attached patch reduces the 4 bytes hole overhead of
CONFIG_TIMER_STATS on 64bit architectures by shrinking the field for the process name by 4 bytes.

Statistically this doesn't affects that many process names as
most are less than 12 bytes. As CONFIG_TIMER_STATS is enabled at least on fedora kernels I think that we can, with this patch, still reap the benefits of powertopping.

Results, with codiff supressing per object files per struct
reports already showed in previous object file reports:

[acme@doppio linux-2.6]$ codiff --structs /tmp/vmlinux.before ../build/linux-2.6/doppio/vmlinux /home/acme/git/linux-2.6/arch/x86/kernel/head64.c:

  struct timer_list    |   -8
  struct delayed_work  |   -8
  struct kioctx        |   -8
  struct hrtimer       |   -8
  struct signal_struct |   -8

5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/init_task.c:
5 structs changed

/home/acme/git/linux-2.6/init/main.c:

  struct tty_struct    |   -8
  struct tty_bufhead   |   -8

7 structs changed

/home/acme/git/linux-2.6/init/version.c:
5 structs changed

/home/acme/git/linux-2.6/init/do_mounts.c:
7 structs changed

/home/acme/git/linux-2.6/init/do_mounts_initrd.c:
5 structs changed

/home/acme/git/linux-2.6/init/do_mounts_md.c:
struct request_queue | -8
6 structs changed

/home/acme/git/linux-2.6/init/initramfs.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/process_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/signal_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/traps_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/irq_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/ptrace_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/time_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/ioport_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/ldt_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/setup_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/i8259_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/sys_x86_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/i387_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/setup64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/bootflag.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/e820_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/reboot_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/quirks.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/pci-dma_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/pci-nommu_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/alternative.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/hpet.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/tsc_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/bugs_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/i8253.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/intel_cacheinfo.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mcheck/mce_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mcheck/mce_intel_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mcheck/mce_amd_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mtrr/main.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mtrr/if.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/mtrr/state.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/cpufreq/powernow-k8.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpu/perfctr-watchdog.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/acpi/boot.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/acpi/sleep_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/acpi/cstate.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/msr.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/cpuid.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/smp_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/smpboot_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/tsc_sync.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/apic_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/nmi_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/io_apic_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/mpparse_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/machine_kexec_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/crash.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/crash_dump_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/suspend_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/pci-gart_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/aperture_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/pci-calgary_64.c:
struct iommu_table | -8
6 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/tce_64.c:
6 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/pci-swiotlb_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/kprobes_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/k8.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/audit_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/kernel/early-quirks.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/init_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/fault_64.c:
7 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/ioremap_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/pageattr_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/mmap_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/hugetlbpage.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/numa_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/mm/srat_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/vdso/vma.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/sys_ia32.c:

  struct sock          |   -8
  struct net_device    |   +0
  struct neighbour     |   -8
  struct neigh_table   |  -16

9 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/ia32_signal.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/tls32.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/ia32_binfmt.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/fpu32.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/ptrace32.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/syscall32.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/mmap32.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/ia32/ipc32.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/sched.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/fork.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/exec_domain.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/panic.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/printk.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/profile.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/exit.c:
8 structs changed

/home/acme/git/linux-2.6/kernel/itimer.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/softirq.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/sysctl.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/capability.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/ptrace.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/timer.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/user.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/user_namespace.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/signal.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/sys.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/kmod.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/workqueue.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/pid.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/rcupdate.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/posix-timers.c:
struct k_itimer | -8
6 structs changed

/home/acme/git/linux-2.6/kernel/kthread.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/wait.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/posix-cpu-timers.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/mutex.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/hrtimer.c:
struct hrtimer_sleeper | -8
6 structs changed

/home/acme/git/linux-2.6/kernel/nsproxy.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/srcu.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/utsname.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/notifier.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/timekeeping.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/ntp.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/clocksource.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/timer_list.c:
struct tick_sched | -8
6 structs changed

/home/acme/git/linux-2.6/kernel/time/tick-common.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/tick-broadcast.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/tick-oneshot.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/time/tick-sched.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/time/timer_stats.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/futex.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/futex_compat.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/rtmutex.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/cpu.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/spinlock.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/uid16.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/module.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/kallsyms.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/main.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/pm.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/process.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/console.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/power/swsusp.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/disk.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/snapshot.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/power/swap.c:
6 structs changed

/home/acme/git/linux-2.6/kernel/power/user.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/acct.c:
struct acct_glbs | -8
9 structs changed

/home/acme/git/linux-2.6/kernel/kexec.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/compat.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/stop_machine.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/audit.c:
11 structs changed

/home/acme/git/linux-2.6/kernel/auditfilter.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/auditsc.c:
7 structs changed

/home/acme/git/linux-2.6/kernel/audit_tree.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/kprobes.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/ksysfs.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/softlockup.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/handle.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/manage.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/spurious.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/resend.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/chip.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/devres.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/autoprobe.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/irq/proc.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/seccomp.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/relay.c:
struct rchan_buf | +0
6 structs changed

/home/acme/git/linux-2.6/kernel/utsname_sysctl.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/delayacct.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/taskstats.c:
5 structs changed

/home/acme/git/linux-2.6/kernel/tsacct.c:
5 structs changed

/home/acme/git/linux-2.6/mm/bootmem.c:
5 structs changed

/home/acme/git/linux-2.6/mm/filemap.c:
6 structs changed

/home/acme/git/linux-2.6/mm/mempool.c:
6 structs changed

/home/acme/git/linux-2.6/mm/oom_kill.c:
5 structs changed

/home/acme/git/linux-2.6/mm/fadvise.c:
5 structs changed

/home/acme/git/linux-2.6/mm/page_alloc.c:
6 structs changed

/home/acme/git/linux-2.6/mm/page-writeback.c:
6 structs changed

/home/acme/git/linux-2.6/mm/pdflush.c:
5 structs changed

/home/acme/git/linux-2.6/mm/readahead.c:
6 structs changed

/home/acme/git/linux-2.6/mm/swap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/truncate.c:
5 structs changed

/home/acme/git/linux-2.6/mm/vmscan.c:
6 structs changed

/home/acme/git/linux-2.6/mm/prio_tree.c:
5 structs changed

/home/acme/git/linux-2.6/mm/vmstat.c:
5 structs changed

/home/acme/git/linux-2.6/mm/backing-dev.c:
5 structs changed

/home/acme/git/linux-2.6/mm/page_isolation.c:
5 structs changed

/home/acme/git/linux-2.6/mm/fremap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/highmem.c:
7 structs changed

/home/acme/git/linux-2.6/mm/madvise.c:
5 structs changed

/home/acme/git/linux-2.6/mm/memory.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mincore.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mlock.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mmap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mprotect.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mremap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/msync.c:
5 structs changed

/home/acme/git/linux-2.6/mm/rmap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/vmalloc.c:
5 structs changed

/home/acme/git/linux-2.6/mm/bounce.c:
7 structs changed

/home/acme/git/linux-2.6/mm/page_io.c:
5 structs changed

/home/acme/git/linux-2.6/mm/swap_state.c:
5 structs changed

/home/acme/git/linux-2.6/mm/swapfile.c:
6 structs changed

/home/acme/git/linux-2.6/mm/thrash.c:
5 structs changed

/home/acme/git/linux-2.6/mm/hugetlb.c:
5 structs changed

/home/acme/git/linux-2.6/mm/mempolicy.c:
5 structs changed

/home/acme/git/linux-2.6/mm/sparse.c:
5 structs changed

/home/acme/git/linux-2.6/mm/sparse-vmemmap.c:
5 structs changed

/home/acme/git/linux-2.6/mm/shmem.c:
6 structs changed

/home/acme/git/linux-2.6/mm/shmem_acl.c:
5 structs changed

/home/acme/git/linux-2.6/mm/slub.c:
5 structs changed

/home/acme/git/linux-2.6/mm/filemap_xip.c:
5 structs changed

/home/acme/git/linux-2.6/mm/migrate.c:
5 structs changed

/home/acme/git/linux-2.6/mm/allocpercpu.c:
5 structs changed

/home/acme/git/linux-2.6/fs/open.c:
7 structs changed

/home/acme/git/linux-2.6/fs/read_write.c:
5 structs changed

/home/acme/git/linux-2.6/fs/file_table.c:
5 structs changed

/home/acme/git/linux-2.6/fs/super.c:
6 structs changed

/home/acme/git/linux-2.6/fs/char_dev.c:
5 structs changed

/home/acme/git/linux-2.6/fs/stat.c:
5 structs changed

/home/acme/git/linux-2.6/fs/exec.c:
5 structs changed

/home/acme/git/linux-2.6/fs/pipe.c:
5 structs changed

/home/acme/git/linux-2.6/fs/namei.c:
5 structs changed

/home/acme/git/linux-2.6/fs/fcntl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/ioctl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/readdir.c:
5 structs changed

/home/acme/git/linux-2.6/fs/select.c:
5 structs changed

/home/acme/git/linux-2.6/fs/fifo.c:
5 structs changed

/home/acme/git/linux-2.6/fs/locks.c:
5 structs changed

/home/acme/git/linux-2.6/fs/dcache.c:
5 structs changed

/home/acme/git/linux-2.6/fs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/attr.c:
5 structs changed

/home/acme/git/linux-2.6/fs/bad_inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/file.c:
5 structs changed

/home/acme/git/linux-2.6/fs/namespace.c:
5 structs changed

/home/acme/git/linux-2.6/fs/aio.c:
struct aio_timeout | -8
6 structs changed

/home/acme/git/linux-2.6/fs/xattr.c:
5 structs changed

/home/acme/git/linux-2.6/fs/libfs.c:
5 structs changed

/home/acme/git/linux-2.6/fs/fs-writeback.c:
6 structs changed

/home/acme/git/linux-2.6/fs/pnode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/drop_caches.c:
5 structs changed

/home/acme/git/linux-2.6/fs/splice.c:
5 structs changed

/home/acme/git/linux-2.6/fs/sync.c:
5 structs changed

/home/acme/git/linux-2.6/fs/utimes.c:
5 structs changed

/home/acme/git/linux-2.6/fs/buffer.c:
6 structs changed

/home/acme/git/linux-2.6/fs/bio.c:
7 structs changed

/home/acme/git/linux-2.6/fs/block_dev.c:
6 structs changed

/home/acme/git/linux-2.6/fs/direct-io.c:
6 structs changed

/home/acme/git/linux-2.6/fs/mpage.c:
6 structs changed

/home/acme/git/linux-2.6/fs/ioprio.c:
6 structs changed

/home/acme/git/linux-2.6/fs/inotify.c:
5 structs changed

/home/acme/git/linux-2.6/fs/inotify_user.c:
5 structs changed

/home/acme/git/linux-2.6/fs/eventpoll.c:
5 structs changed

/home/acme/git/linux-2.6/fs/anon_inodes.c:
5 structs changed

/home/acme/git/linux-2.6/fs/signalfd.c:
5 structs changed

/home/acme/git/linux-2.6/fs/eventfd.c:
5 structs changed

/home/acme/git/linux-2.6/fs/compat.c:
5 structs changed

/home/acme/git/linux-2.6/fs/compat_ioctl.c:
12 structs changed

/home/acme/git/linux-2.6/fs/nfsctl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/binfmt_misc.c:
5 structs changed

/home/acme/git/linux-2.6/fs/binfmt_elf.c:
5 structs changed

/home/acme/git/linux-2.6/fs/posix_acl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/generic_acl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/dquot.c:
7 structs changed

/home/acme/git/linux-2.6/fs/quota.c:
5 structs changed

/home/acme/git/linux-2.6/fs/dnotify.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/mmu.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/task_mmu.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/root.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/base.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/generic.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/array.c:
7 structs changed

/home/acme/git/linux-2.6/fs/proc/proc_tty.c:
4 structs changed

/home/acme/git/linux-2.6/fs/proc/proc_misc.c:
8 structs changed

/home/acme/git/linux-2.6/fs/proc/proc_sysctl.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/proc_net.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/kcore.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/vmcore.c:
5 structs changed

/home/acme/git/linux-2.6/fs/proc/kmsg.c:
5 structs changed

/home/acme/git/linux-2.6/fs/partitions/check.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/amiga.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/mac.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/msdos.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/osf.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/sgi.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/sun.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/efi.c:
6 structs changed

/home/acme/git/linux-2.6/fs/partitions/karma.c:
6 structs changed

/home/acme/git/linux-2.6/fs/sysfs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/sysfs/file.c:
5 structs changed

/home/acme/git/linux-2.6/fs/sysfs/mount.c:
5 structs changed

/home/acme/git/linux-2.6/fs/devpts/inode.c:
7 structs changed

/home/acme/git/linux-2.6/fs/dcookies.c:
5 structs changed

/home/acme/git/linux-2.6/fs/ramfs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/ramfs/file-mmu.c:
5 structs changed

/home/acme/git/linux-2.6/fs/hugetlbfs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/namei.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/dir.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/util.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/rock.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/export.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/joliet.c:
5 structs changed

/home/acme/git/linux-2.6/fs/isofs/compress.c:
5 structs changed

/home/acme/git/linux-2.6/fs/debugfs/inode.c:
5 structs changed

/home/acme/git/linux-2.6/fs/debugfs/file.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/compat.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/util.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/msgutil.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/msg.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/sem.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/shm.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/ipc_sysctl.c:
5 structs changed

/home/acme/git/linux-2.6/ipc/mqueue.c:
9 structs changed

/home/acme/git/linux-2.6/ipc/compat_mq.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/key.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/keyring.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/keyctl.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/permission.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/process_keys.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/request_key.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/request_key_auth.c:
5 structs changed

/home/acme/git/linux-2.6/security/keys/proc.c:
5 structs changed

/home/acme/git/linux-2.6/security/security.c:
5 structs changed

/home/acme/git/linux-2.6/security/dummy.c:
9 structs changed

/home/acme/git/linux-2.6/security/inode.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/avc.c:

  struct unix_sock     |   -8
  struct inet_sock     |   -8

11 structs changed

/home/acme/git/linux-2.6/security/selinux/hooks.c:
11 structs changed

/home/acme/git/linux-2.6/security/selinux/selinuxfs.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/netlink.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/nlmsgtab.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/netif.c:
6 structs changed

/home/acme/git/linux-2.6/security/selinux/exports.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/xfrm.c:

  struct xfrm_policy   |   -8
  struct xfrm_state    |  -16
  struct inet6_ifaddr  |   -8
  struct inet6_dev     |  -24
  struct ifmcaddr6     |   -8

14 structs changed

/home/acme/git/linux-2.6/security/selinux/netlabel.c:
9 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/ebitmap.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/sidtab.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/avtab.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/policydb.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/services.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/conditional.c:
5 structs changed

/home/acme/git/linux-2.6/security/selinux/ss/mls.c:
5 structs changed

/home/acme/git/linux-2.6/security/commoncap.c:
5 structs changed

/home/acme/git/linux-2.6/security/capability.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/api.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/cipher.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/digest.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/compress.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/algapi.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/scatterwalk.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/proc.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/hash.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/cryptomgr.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/hmac.c:
5 structs changed

/home/acme/git/linux-2.6/crypto/sha1_generic.c:
5 structs changed

/home/acme/git/linux-2.6/block/elevator.c:
7 structs changed

/home/acme/git/linux-2.6/block/ll_rw_blk.c:
7 structs changed

/home/acme/git/linux-2.6/block/ioctl.c:
7 structs changed

/home/acme/git/linux-2.6/block/genhd.c:
6 structs changed

/home/acme/git/linux-2.6/block/scsi_ioctl.c:
6 structs changed

/home/acme/git/linux-2.6/block/bsg.c:
6 structs changed

/home/acme/git/linux-2.6/block/noop-iosched.c:
6 structs changed

/home/acme/git/linux-2.6/block/as-iosched.c:
struct as_data | -8
7 structs changed

/home/acme/git/linux-2.6/block/deadline-iosched.c:
6 structs changed

/home/acme/git/linux-2.6/block/cfq-iosched.c:
struct cfq_data | -16
7 structs changed

/home/acme/git/linux-2.6/block/blktrace.c:
7 structs changed

/home/acme/git/linux-2.6/block/compat_ioctl.c:
7 structs changed

/home/acme/git/linux-2.6/lib/bug.c:
5 structs changed

/home/acme/git/linux-2.6/lib/ioremap.c:
5 structs changed

/home/acme/git/linux-2.6/lib/kobject_uevent.c:
9 structs changed

/home/acme/git/linux-2.6/lib/prio_tree.c:
5 structs changed

/home/acme/git/linux-2.6/lib/rwsem-spinlock.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/lib/delay_64.c:
5 structs changed

/home/acme/git/linux-2.6/lib/bust_spinlocks.c:
7 structs changed

/home/acme/git/linux-2.6/lib/iomap.c:
5 structs changed

/home/acme/git/linux-2.6/lib/devres.c:
5 structs changed

/home/acme/git/linux-2.6/lib/kernel_lock.c:
5 structs changed

/home/acme/git/linux-2.6/lib/swiotlb.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/access.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/bus.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/probe.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/remove.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pci.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/quirks.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pci-driver.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/search.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pci-sysfs.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/rom.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/setup-res.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/proc.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/portdrv_core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/portdrv_pci.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/portdrv_bus.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/aer/aerdrv_errprint.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/aer/aerdrv_core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/aer/aerdrv.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pcie/aer/aerdrv_acpi.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/hotplug.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/hotplug/pci_hotplug_core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/hotplug/acpi_pcihp.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/msi.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/htirq.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/setup-bus.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pci/pci-acpi.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/video/fb_notify.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/video/fbmem.c:
struct fb_info | -8
6 structs changed

/home/acme/git/linux-2.6/drivers/video/fbmon.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/fbcmap.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/fbsysfs.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/modedb.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/fbcvt.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/video/console/dummycon.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/video/console/vgacon.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/video/console/fbcon.c:
struct fbcon_ops | -8
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/bitblit.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/softcursor.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/tileblit.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/fbcon_rotate.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/fbcon_cw.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/fbcon_ud.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/console/fbcon_ccw.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/video/backlight/backlight.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/cfbfillrect.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/cfbcopyarea.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/cfbimgblt.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/fb_defio.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/video/vesafb.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/acpi/osl.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/namespace/nsinit.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/sleep/main.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/sleep/proc.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/bus.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/ec.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/pci_root.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/pci_link.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/pci_irq.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/pci_bind.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/processor_core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/processor_throttling.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/processor_idle.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/acpi/thermal.c:
struct acpi_thermal | -8
2 structs changed

/home/acme/git/linux-2.6/drivers/acpi/event.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pnp/core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pnp/resource.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pnp/pnpacpi/rsparser.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/mem.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/random.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/tty_io.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/n_tty.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/tty_ioctl.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/pty.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/vt_ioctl.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/vc_screen.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/consolemap.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/selection.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/keyboard.c:
struct input_dev | -8
8 structs changed

/home/acme/git/linux-2.6/drivers/char/vt.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/tty_audit.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/sysrq.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/char/rtc.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/hpet.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/nvram.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/hw_random/core.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/backend.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/frontend.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/generic.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/isoch.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/compat_ioctl.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/amd64-agp.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/intel-agp.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/sis-agp.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/char/agp/via-agp.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/connector/cn_queue.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/connector/connector.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/connector/cn_proc.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/serial/serial_core.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/serial/8250.c:
struct uart_8250_port | -8
8 structs changed

/home/acme/git/linux-2.6/drivers/serial/8250_pnp.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/serial/8250_pci.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/serial/8250_early.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/base/dd.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/platform.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/cpu.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/power/trace.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/dma-mapping.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/dmapool.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/firmware_class.c:
struct firmware_priv | -8
6 structs changed

/home/acme/git/linux-2.6/drivers/base/node.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/base/topology.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/block/rd.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/net/Space.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/net/loopback.c:
9 structs changed

/home/acme/git/linux-2.6/drivers/macintosh/mac_hid.c:
8 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/cs.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/cistpl.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/rsrc_mgr.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/socket_sysfs.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/cardbus.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/ds.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/pcmcia_resource.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/pcmcia_ioctl.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/rsrc_nonstatic.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/pcmcia/yenta_socket.c:
struct yenta_socket | -8
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/usb.c:

  struct usb_device    |   -8
  struct usb_hcd       |   -8

7 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/hub.c:
struct usb_hub | -8
8 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/hcd.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/urb.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/message.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/driver.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/config.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/file.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/buffer.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/sysfs.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/endpoint.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/devio.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/notify.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/generic.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/quirks.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/hcd-pci.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/inode.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/core/devices.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/mon/mon_main.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/mon/mon_stat.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/mon/mon_text.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/mon/mon_bin.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/usb/mon/mon_dma.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/usb/host/pci-quirks.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/input/serio/serio.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/input/serio/i8042.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/input/serio/serport.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/input/serio/libps2.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/input/input.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/ff-core.c:
2 structs changed

/home/acme/git/linux-2.6/drivers/input/ff-memless.c:
struct ml_device | -8
3 structs changed

/home/acme/git/linux-2.6/drivers/input/mousedev.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/evdev.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/keyboard/atkbd.c:
struct atkbd | -8
7 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/psmouse-base.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/synaptics.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/alps.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/logips2pp.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/lifebook.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/input/mouse/trackpoint.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/i2c/i2c-boardinfo.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/md/md.c:
struct mddev_s | -8
7 structs changed

/home/acme/git/linux-2.6/drivers/md/bitmap.c:
7 structs changed

/home/acme/git/linux-2.6/drivers/cpufreq/cpufreq.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/cpufreq/cpufreq_userspace.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/cpuidle/cpuidle.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/firmware/dmi_scan.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/clocksource/acpi_pm.c:
5 structs changed

/home/acme/git/linux-2.6/drivers/hid/hid-core.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/hid-input.c:
2 structs changed

/home/acme/git/linux-2.6/drivers/hid/hid-debug.c:
2 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-core.c:
struct usbhid_device | -8
8 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hiddev.c:
8 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-pidff.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-lgff.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-plff.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-tmff.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-zpff.c:
6 structs changed

/home/acme/git/linux-2.6/drivers/hid/usbhid/hid-ff.c:
6 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/i386.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/direct.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/fixup.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/init.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/acpi.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/legacy.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/irq.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/common.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/early.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/mmconfig_64.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/mmconfig-shared.c:
5 structs changed

/home/acme/git/linux-2.6/arch/x86/pci/k8-bus_64.c:
5 structs changed

/home/acme/git/linux-2.6/net/socket.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/sock.c:
14 structs changed

/home/acme/git/linux-2.6/net/core/request_sock.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/skbuff.c:
14 structs changed

/home/acme/git/linux-2.6/net/core/iovec.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/datagram.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/stream.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/scm.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/gen_stats.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/gen_estimator.c:
struct gen_estimator_head | -8
6 structs changed

/home/acme/git/linux-2.6/net/core/net_namespace.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/sysctl_net_core.c:
14 structs changed

/home/acme/git/linux-2.6/net/core/dev.c:
struct netpoll_info | -8
10 structs changed

/home/acme/git/linux-2.6/net/core/ethtool.c:
6 structs changed

/home/acme/git/linux-2.6/net/core/dev_mcast.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/dst.c:
8 structs changed

/home/acme/git/linux-2.6/net/core/netevent.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/neighbour.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/rtnetlink.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/utils.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/link_watch.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/filter.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/flow.c:
5 structs changed

/home/acme/git/linux-2.6/net/core/net-sysfs.c:
9 structs changed

/home/acme/git/linux-2.6/net/core/netpoll.c:
struct in_device | -16
11 structs changed

/home/acme/git/linux-2.6/net/core/fib_rules.c:
9 structs changed

/home/acme/git/linux-2.6/net/compat.c:
9 structs changed

/home/acme/git/linux-2.6/net/llc/llc_core.c:
6 structs changed

/home/acme/git/linux-2.6/net/llc/llc_input.c:
6 structs changed

/home/acme/git/linux-2.6/net/llc/llc_output.c:
6 structs changed

/home/acme/git/linux-2.6/net/ethernet/eth.c:
9 structs changed

/home/acme/git/linux-2.6/net/ethernet/pe2.c:
6 structs changed

/home/acme/git/linux-2.6/net/802/sysctl_net_802.c:
5 structs changed

/home/acme/git/linux-2.6/net/802/p8022.c:
6 structs changed

/home/acme/git/linux-2.6/net/802/psnap.c:
6 structs changed

/home/acme/git/linux-2.6/net/802/tr.c:
8 structs changed

/home/acme/git/linux-2.6/net/802/fc.c:
8 structs changed

/home/acme/git/linux-2.6/net/802/fddi.c:
9 structs changed

/home/acme/git/linux-2.6/net/sched/sch_generic.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/sch_api.c:
struct qdisc_watchdog | -8
7 structs changed

/home/acme/git/linux-2.6/net/sched/sch_blackhole.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/cls_api.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/act_api.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/act_police.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/sch_fifo.c:
6 structs changed

/home/acme/git/linux-2.6/net/sched/ematch.c:
6 structs changed

/home/acme/git/linux-2.6/net/netlink/af_netlink.c:
struct netlink_sock | -8
10 structs changed

/home/acme/git/linux-2.6/net/netlink/attr.c:
6 structs changed

/home/acme/git/linux-2.6/net/netlink/genetlink.c:
9 structs changed

/home/acme/git/linux-2.6/net/netfilter/core.c:
10 structs changed

/home/acme/git/linux-2.6/net/netfilter/nf_log.c:
9 structs changed

/home/acme/git/linux-2.6/net/netfilter/nf_queue.c:
9 structs changed

/home/acme/git/linux-2.6/net/netfilter/nf_sockopt.c:
9 structs changed

/home/acme/git/linux-2.6/net/ipv4/route.c:
struct ip_mc_list | -8
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/inetpeer.c:
5 structs changed

/home/acme/git/linux-2.6/net/ipv4/protocol.c:
9 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_input.c:
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_fragment.c:

  struct inet_frag_queue |   -8
  struct inet_frags      |   -8
  struct ipq             |   -8

12 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_forward.c:
14 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_options.c:
9 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_output.c:
15 structs changed

/home/acme/git/linux-2.6/net/ipv4/ip_sockglue.c:
struct inet_connection_sock | -24
18 structs changed

/home/acme/git/linux-2.6/net/ipv4/inet_hashtables.c:
struct inet_timewait_death_row | -16
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/inet_timewait_sock.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/inet_connection_sock.c:
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp.c:
struct tcp_sock | -24
18 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_input.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_output.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_timer.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_ipv4.c:
18 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_minisocks.c:
18 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_cong.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/datagram.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/raw.c:
struct raw_sock | -8
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/udp.c:
struct udp_sock | -8
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/udplite.c:
11 structs changed

/home/acme/git/linux-2.6/net/ipv4/arp.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/icmp.c:
11 structs changed

/home/acme/git/linux-2.6/net/ipv4/devinet.c:
11 structs changed

/home/acme/git/linux-2.6/net/ipv4/af_inet.c:
17 structs changed

/home/acme/git/linux-2.6/net/ipv4/igmp.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/sysctl_net_ipv4.c:
6 structs changed

/home/acme/git/linux-2.6/net/ipv4/fib_frontend.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/fib_semantics.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/inet_fragment.c:
7 structs changed

/home/acme/git/linux-2.6/net/ipv4/fib_hash.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/proc.c:
11 structs changed

/home/acme/git/linux-2.6/net/ipv4/fib_rules.c:
10 structs changed

/home/acme/git/linux-2.6/net/ipv4/ipmr.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/syncookies.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/netfilter.c:
14 structs changed

/home/acme/git/linux-2.6/net/ipv4/tcp_cubic.c:
12 structs changed

/home/acme/git/linux-2.6/net/ipv4/cipso_ipv4.c:
11 structs changed

/home/acme/git/linux-2.6/net/ipv4/xfrm4_policy.c:
15 structs changed

/home/acme/git/linux-2.6/net/ipv4/xfrm4_state.c:
14 structs changed

/home/acme/git/linux-2.6/net/ipv4/xfrm4_input.c:
16 structs changed

/home/acme/git/linux-2.6/net/ipv4/xfrm4_output.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_policy.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_state.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_hash.c:
5 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_input.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_output.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_algo.c:
14 structs changed

/home/acme/git/linux-2.6/net/xfrm/xfrm_user.c:
14 structs changed

/home/acme/git/linux-2.6/net/unix/af_unix.c:
10 structs changed

/home/acme/git/linux-2.6/net/unix/garbage.c:
10 structs changed

/home/acme/git/linux-2.6/net/unix/sysctl_net_unix.c:
5 structs changed

/home/acme/git/linux-2.6/net/ipv6/addrconf_core.c:
9 structs changed

/home/acme/git/linux-2.6/net/ipv6/exthdrs_core.c:
9 structs changed

/home/acme/git/linux-2.6/net/ipv6/inet6_hashtables.c:
12 structs changed

/home/acme/git/linux-2.6/net/packet/af_packet.c:
struct packet_sock | -8
10 structs changed

/home/acme/git/linux-2.6/net/wireless/wext.c:
6 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_user.c:
11 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_kapi.c:
9 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_domainhash.c:
5 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_mgmt.c:
9 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_unlabeled.c:
9 structs changed

/home/acme/git/linux-2.6/net/netlabel/netlabel_cipso_v4.c:
9 structs changed

/home/acme/git/linux-2.6/net/sysctl_net.c:
5 structs changed

/home/acme/git/linux-2.6/lib/semaphore-sleepers.c:
5 structs changed

include/linux/hrtimer.h +1 -1

index 7a9398e..7b29bc6 100644
@@ -121,7 +121,7 @@ struct hrtimer {
 #endif
 #ifdef CONFIG_TIMER_STATS
 	void				*start_site;
-	char				start_comm[16];
+	char				start_comm[12];
 	int				start_pid;
 #endif
 };

include/linux/timer.h +1 -1

index 78cf899..2556358 100644
@@ -17,7 +17,7 @@ struct timer_list {
 	struct tvec_t_base_s *base;
 #ifdef CONFIG_TIMER_STATS
 	void *start_site;
-	char start_comm[16];
+	char start_comm[12];
 	int start_pid;
 #endif
 };

kernel/hrtimer.c +2 -2

index e65dd0b..2349c2b 100644
@@ -632,7 +632,7 @@ void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer, void *addr)
 		return;
 
 	timer->start_site = addr;
-	memcpy(timer->start_comm, current->comm, TASK_COMM_LEN);
+	memcpy(timer->start_comm, current->comm, sizeof(timer->start_comm));
 	timer->start_pid = current->pid;
 }
 #endif

@@ -1006,7 +1006,7 @@ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id,
 #ifdef CONFIG_TIMER_STATS
 	timer->start_site = NULL;
 	timer->start_pid = -1;
-	memset(timer->start_comm, 0, TASK_COMM_LEN);
+	memset(timer->start_comm, 0, sizeof(timer->start_comm));
 #endif
 }
 EXPORT_SYMBOL_GPL(hrtimer_init);

kernel/time/timer_list.c +3 -3

index 12c5f4c..2259b55 100644
@@ -50,7 +50,7 @@ static void
 print_timer(struct seq_file *m, struct hrtimer *timer, int idx, u64 now)
 {
 #ifdef CONFIG_TIMER_STATS
-	char tmp[TASK_COMM_LEN + 1];
+	char tmp[sizeof(timer->start_comm) + 1];
 #endif
 	SEQ_printf(m, " #%d: ", idx);
 	print_name_offset(m, timer);

@@ -60,8 +60,8 @@ print_timer(struct seq_file *m, struct hrtimer *timer, int idx, u64 now)
 #ifdef CONFIG_TIMER_STATS
 	SEQ_printf(m, ", ");
 	print_name_offset(m, timer->start_site);
-	memcpy(tmp, timer->start_comm, TASK_COMM_LEN);
-	tmp[TASK_COMM_LEN] = 0;
+	memcpy(tmp, timer->start_comm, sizeof(timer->start_comm));
+	tmp[sizeof(timer->start_comm)] = 0;
 	SEQ_printf(m, ", %s/%d", tmp, timer->start_pid);
 #endif
 	SEQ_printf(m, "\n");

kernel/timer.c +2 -2

index a05817c..c7705dd 100644
@@ -303,7 +303,7 @@ void __timer_stats_timer_set_start_info(struct timer_list *timer, void *addr)
 		return;
 
 	timer->start_site = addr;
-	memcpy(timer->start_comm, current->comm, TASK_COMM_LEN);
+	memcpy(timer->start_comm, current->comm, sizeof(timer->start_comm));
 	timer->start_pid = current->pid;
 }
 

@@ -336,7 +336,7 @@ void fastcall init_timer(struct timer_list *timer)
 #ifdef CONFIG_TIMER_STATS
 	timer->start_site = NULL;
 	timer->start_pid = -1;
-	memset(timer->start_comm, 0, TASK_COMM_LEN);
+	memset(timer->start_comm, 0, sizeof(timer->start_comm));
 #endif
 }
 EXPORT_SYMBOL(init_timer);

Hi,
While looking at the pahole output for struct timer_list on
recent kernels I noticed that there is a 4 bytes padding on struct timer_list that gets propagated to many structs on 64 bits architectures:

[acme@doppio linux-2.6]$ pahole -C timer_list /tmp/tcp.o.before struct timer_list {

        struct list_head      entry;          /*     0    16 */
        long unsigned int     expires;        /*    16     8 */
        void                  (*function)(long unsigned int); /*
24     8 */ long unsigned int     data;           /*    32     8 */
        struct tvec_t_base_s *base;           /*    40     8 */
        void *                start_site;     /*    48     8 */
        char                  start_comm[16]; /*    56    16 */
        /* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */
        int                   start_pid;      /*    72     4 */

        /* size: 80, cachelines: 2 */
        /* padding: 4 */
        /* last cacheline: 16 bytes */
};

[acme@doppio linux-2.6]$

So the attached patch reduces the 4 bytes hole overhead of
CONFIG_TIMER_STATS on 64bit architectures by shrinking the field for the process name by 4 bytes.

Statistically this doesn't affects that many process names as
most are less than 12 bytes. As CONFIG_TIMER_STATS is enabled at least on fedora kernels I think that we can, with this patch, still reap the benefits of powertopping.

Quoted 28 lines · On Sun, 16 Dec 2007 19:29:44 -0200 Arnaldo Carvalho de Melo <[email protected]>…

Hi,
While looking at the pahole output for struct timer_list on
recent kernels I noticed that there is a 4 bytes padding on struct timer_list that gets propagated to many structs on 64 bits architectures:

[acme@doppio linux-2.6]$ pahole -C timer_list /tmp/tcp.o.before struct timer_list {

        struct list_head      entry;          /*     0    16 */
        long unsigned int     expires;        /*    16     8 */
        void                  (*function)(long unsigned int); /*
24     8 */ long unsigned int     data;           /*    32     8 */
        struct tvec_t_base_s *base;           /*    40     8 */
        void *                start_site;     /*    48     8 */
        char                  start_comm[16]; /*    56    16 */
        /* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */
        int                   start_pid;      /*    72     4 */

        /* size: 80, cachelines: 2 */
        /* padding: 4 */
        /* last cacheline: 16 bytes */
};

[acme@doppio linux-2.6]$

So the attached patch reduces the 4 bytes hole overhead of
CONFIG_TIMER_STATS on 64bit architectures by shrinking the field for the process name by 4 bytes.

Quoted 4 lines

Statistically this doesn't affects that many process names as
most are less than 12 bytes. As CONFIG_TIMER_STATS is enabled at least on fedora kernels I think that we can, with this patch, still reap the benefits of powertopping.

I'm still worried that this means that PowerTOP will end up displaying shortened names.. it's already sometimes tricky to know who's guilty at 16... at 12 I fear it just gets worse. Isn't there some other reorder that you can do to still get rid of the hole?