2de67fcaf4
What is in a struct...
[acme@filo pahole]$ pahole net/ipv6/tcp_ipv6.o delayed_work
/* <2bc9> /home/acme/git/linux-2.6/include/linux/workqueue.h:37 */
struct delayed_work {
struct work_struct work; /* 0 16 */
struct timer_list timer; /* 16 24 */
}; /* size: 40, cachelines: 1 */
/* last cacheline: 40 bytes */
[acme@filo pahole]$
Oh, but what if we want to unfold all the structs?
lo pahole]$ pahole --expand_types /home/acme/git/OUTPUT/qemu/linux-2.6/net/ipv6/tcp_ipv6.o delayed_work
/* <2bc9> /home/acme/git/linux-2.6/include/linux/workqueue.h:37 */
struct delayed_work {
struct work_struct {
atomic_long_t data; /* 0 4 */
struct list_head {
struct list_head * next; /* 0 4 */
struct list_head * prev; /* 4 4 */
} entry; /* 4 8 */
work_func_t func; /* 12 4 */
} work; /* 0 16 */
struct timer_list {
struct list_head {
struct list_head * next; /* 0 4 */
struct list_head * prev; /* 4 4 */
} entry; /* 0 8 */
long unsigned int expires; /* 8 4 */
void (*function)(long unsigned int); /* 12 4 */
long unsigned int data; /* 16 4 */
struct tvec_t_base_s * base; /* 20 4 */
} timer; /* 16 24 */
}; /* size: 40, cachelines: 1 */
/* last cacheline: 40 bytes */
[acme@filo pahole]$
Quick hack, as we already had all the needed infrastructure due to anonymous struct
printing inside structs/unions, now for the curious, if you have the kernel-debuginfo
package installed in your FC6 machine:
[acme@filo pahole]$ pahole --expand_types /usr/lib/debug/lib/modules/2.6.19-1.2895.fc6/kernel/net/ipv6/ipv6.ko.debug tcp6_sock
Try struct task_struct too 8-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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||
|---|---|---|
| cmake/modules | ||
| lib | ||
| rpm/SPECS | ||
| CMakeLists.txt | ||
| codiff.c | ||
| ctracer.c | ||
| dtagnames.c | ||
| dwarves.c | ||
| dwarves.h | ||
| list.h | ||
| MANIFEST | ||
| pahole.c | ||
| pdwtags.c | ||
| pfunct.c | ||
| prefcnt.c | ||
| README | ||
| README.ctracer | ||
Build instructions: 1. install cmake 2. mkdir build 3. cd build 4. cmake .. 5. make Known to work scenarios: Mandriva Cooker: cmake 2.4.5-1mdv2007.1 libelfutils1-devel 0.123-1mdv2007.1 Debian Unstable: cmake 2.4.5-1 libdw-dev 0.123-2