diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2008-11-11 23:24:42 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-12 10:17:19 +0100 |
| commit | 74239072830ef3f1398edeb1bc1076fc330fd4a2 (patch) | |
| tree | 60a244c6c88d9943760ded98a1a29ce018292107 /kernel/trace/trace.h | |
| parent | 3f5ec13696fd4a33bde42f385406cbb1d3cc96fd (diff) | |
tracing/fastboot: Use the ring-buffer timestamp for initcall entries
Impact: Split the boot tracer entries in two parts: call and return
Now that we are using the sched tracer from the boot tracer, we want
to use the same timestamp than the ring-buffer to have consistent time
captures between sched events and initcall events.
So we get rid of the old time capture by the boot tracer and split the
initcall events in two parts: call and return. This way we have the
ring buffer timestamp of both.
An example trace:
[ 27.904149584] calling net_ns_init+0x0/0x1c0 @ 1
[ 27.904429624] initcall net_ns_init+0x0/0x1c0 returned 0 after 0 msecs
[ 27.904575926] calling reboot_init+0x0/0x20 @ 1
[ 27.904655399] initcall reboot_init+0x0/0x20 returned 0 after 0 msecs
[ 27.904800228] calling sysctl_init+0x0/0x30 @ 1
[ 27.905142914] initcall sysctl_init+0x0/0x30 returned 0 after 0 msecs
[ 27.905287211] calling ksysfs_init+0x0/0xb0 @ 1
##### CPU 0 buffer started ####
init-1 [000] 27.905395: 1:120:R + [001] 11:115:S
##### CPU 1 buffer started ####
<idle>-0 [001] 27.905425: 0:140:R ==> [001] 11:115:R
init-1 [000] 27.905426: 1:120:D ==> [000] 0:140:R
<idle>-0 [000] 27.905431: 0:140:R + [000] 4:115:S
<idle>-0 [000] 27.905451: 0:140:R ==> [000] 4:115:R
ksoftirqd/0-4 [000] 27.905456: 4:115:S ==> [000] 0:140:R
udevd-11 [001] 27.905458: 11:115:R + [001] 14:115:R
<idle>-0 [000] 27.905459: 0:140:R + [000] 4:115:S
<idle>-0 [000] 27.905462: 0:140:R ==> [000] 4:115:R
udevd-11 [001] 27.905462: 11:115:R ==> [001] 14:115:R
ksoftirqd/0-4 [000] 27.905467: 4:115:S ==> [000] 0:140:R
<idle>-0 [000] 27.905470: 0:140:R + [000] 4:115:S
<idle>-0 [000] 27.905473: 0:140:R ==> [000] 4:115:R
ksoftirqd/0-4 [000] 27.905476: 4:115:S ==> [000] 0:140:R
<idle>-0 [000] 27.905479: 0:140:R + [000] 4:115:S
<idle>-0 [000] 27.905482: 0:140:R ==> [000] 4:115:R
ksoftirqd/0-4 [000] 27.905486: 4:115:S ==> [000] 0:140:R
udevd-14 [001] 27.905499: 14:120:X ==> [001] 11:115:R
udevd-11 [001] 27.905506: 11:115:R + [000] 1:120:D
<idle>-0 [000] 27.905515: 0:140:R ==> [000] 1:120:R
udevd-11 [001] 27.905517: 11:115:S ==> [001] 0:140:R
[ 27.905557107] initcall ksysfs_init+0x0/0xb0 returned 0 after 3906 msecs
[ 27.905705736] calling init_jiffies_clocksource+0x0/0x10 @ 1
[ 27.905779239] initcall init_jiffies_clocksource+0x0/0x10 returned 0 after 0 msecs
[ 27.906769814] calling pm_init+0x0/0x30 @ 1
[ 27.906853627] initcall pm_init+0x0/0x30 returned 0 after 0 msecs
[ 27.906997803] calling pm_disk_init+0x0/0x20 @ 1
[ 27.907076946] initcall pm_disk_init+0x0/0x20 returned 0 after 0 msecs
[ 27.907222556] calling swsusp_header_init+0x0/0x30 @ 1
[ 27.907294325] initcall swsusp_header_init+0x0/0x30 returned 0 after 0 msecs
[ 27.907439620] calling stop_machine_init+0x0/0x50 @ 1
init-1 [000] 27.907485: 1:120:R + [000] 2:115:S
init-1 [000] 27.907490: 1:120:D ==> [000] 2:115:R
kthreadd-2 [000] 27.907507: 2:115:R + [001] 15:115:R
<idle>-0 [001] 27.907517: 0:140:R ==> [001] 15:115:R
kthreadd-2 [000] 27.907517: 2:115:D ==> [000] 0:140:R
<idle>-0 [000] 27.907521: 0:140:R + [000] 4:115:S
<idle>-0 [000] 27.907524: 0:140:R ==> [000] 4:115:R
udevd-15 [001] 27.907527: 15:115:D + [000] 2:115:D
ksoftirqd/0-4 [000] 27.907537: 4:115:S ==> [000] 2:115:R
udevd-15 [001] 27.907537: 15:115:D ==> [001] 0:140:R
kthreadd-2 [000] 27.907546: 2:115:R + [000] 1:120:D
kthreadd-2 [000] 27.907550: 2:115:S ==> [000] 1:120:R
init-1 [000] 27.907584: 1:120:R + [000] 15: 0:D
init-1 [000] 27.907589: 1:120:R + [000] 2:115:S
init-1 [000] 27.907593: 1:120:D ==> [000] 15: 0:R
udevd-15 [000] 27.907601: 15: 0:S ==> [000] 2:115:R
##### CPU 0 buffer started ####
kthreadd-2 [000] 27.907616: 2:115:R + [001] 16:115:R
##### CPU 1 buffer started ####
<idle>-0 [001] 27.907620: 0:140:R ==> [001] 16:115:R
kthreadd-2 [000] 27.907621: 2:115:D ==> [000] 0:140:R
udevd-16 [001] 27.907625: 16:115:D + [000] 2:115:D
<idle>-0 [000] 27.907628: 0:140:R + [000] 4:115:S
udevd-16 [001] 27.907629: 16:115:D ==> [001] 0:140:R
<idle>-0 [000] 27.907631: 0:140:R ==> [000] 4:115:R
ksoftirqd/0-4 [000] 27.907636: 4:115:S ==> [000] 2:115:R
kthreadd-2 [000] 27.907644: 2:115:R + [000] 1:120:D
kthreadd-2 [000] 27.907647: 2:115:S ==> [000] 1:120:R
init-1 [000] 27.907657: 1:120:R + [001] 16: 0:D
<idle>-0 [001] 27.907666: 0:140:R ==> [001] 16: 0:R
[ 27.907703862] initcall stop_machine_init+0x0/0x50 returned 0 after 0 msecs
[ 27.907850704] calling filelock_init+0x0/0x30 @ 1
[ 27.907926573] initcall filelock_init+0x0/0x30 returned 0 after 0 msecs
[ 27.908071327] calling init_script_binfmt+0x0/0x10 @ 1
[ 27.908165195] initcall init_script_binfmt+0x0/0x10 returned 0 after 0 msecs
[ 27.908309461] calling init_elf_binfmt+0x0/0x10 @ 1
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index f69a5199596..b5f91f198fd 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -22,7 +22,8 @@ enum trace_type { TRACE_SPECIAL, TRACE_MMIO_RW, TRACE_MMIO_MAP, - TRACE_BOOT, + TRACE_BOOT_CALL, + TRACE_BOOT_RET, TRACE_FN_RET, __TRACE_LAST_TYPE @@ -123,9 +124,14 @@ struct trace_mmiotrace_map { struct mmiotrace_map map; }; -struct trace_boot { +struct trace_boot_call { struct trace_entry ent; - struct boot_trace initcall; + struct boot_trace_call boot_call; +}; + +struct trace_boot_ret { + struct trace_entry ent; + struct boot_trace_ret boot_ret; }; /* @@ -228,8 +234,9 @@ extern void __ftrace_bad_type(void); TRACE_MMIO_RW); \ IF_ASSIGN(var, ent, struct trace_mmiotrace_map, \ TRACE_MMIO_MAP); \ - IF_ASSIGN(var, ent, struct trace_boot, TRACE_BOOT); \ - IF_ASSIGN(var, ent, struct ftrace_ret_entry, TRACE_FN_RET); \ + IF_ASSIGN(var, ent, struct trace_boot_call, TRACE_BOOT_CALL);\ + IF_ASSIGN(var, ent, struct trace_boot_ret, TRACE_BOOT_RET);\ + IF_ASSIGN(var, ent, struct ftrace_ret_entry, TRACE_FN_RET);\ __ftrace_bad_type(); \ } while (0) |