The patch titled
enhance initcall_debug, measure latency
has been removed from the -mm tree. Its filename was
enhance-initcall_debug-measure-latency.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: enhance initcall_debug, measure latency
From: Ingo Molnar <mingo@xxxxxxx>
enhance the initcall_debug boot option:
- measure the time the initcall took to execute and report
it in units of milliseconds.
- show the return code of initcalls (useful to see failures and
to make sure that an initcall hung)
[akpm@xxxxxxxxxxxxxxxxxxxx: fix printk warning]
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/main.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff -puN init/main.c~enhance-initcall_debug-measure-latency init/main.c
--- a/init/main.c~enhance-initcall_debug-measure-latency
+++ a/init/main.c
@@ -648,6 +648,7 @@ static void __init do_initcalls(void)
int count = preempt_count();
for (call = __initcall_start; call < __initcall_end; call++) {
+ ktime_t t0, t1, delta;
char *msg = NULL;
char msgbuf[40];
int result;
@@ -657,10 +658,26 @@ static void __init do_initcalls(void)
print_fn_descriptor_symbol(": %s()",
(unsigned long) *call);
printk("\n");
+ t0 = ktime_get();
}
result = (*call)();
+ if (initcall_debug) {
+ t1 = ktime_get();
+ delta = ktime_sub(t1, t0);
+
+ printk("initcall 0x%p", *call);
+ print_fn_descriptor_symbol(": %s()",
+ (unsigned long) *call);
+ printk(" returned %d.\n", result);
+
+ printk("initcall 0x%p ran for %Ld msecs: ",
+ *call, (unsigned long long)delta.tv64 >> 20);
+ print_fn_descriptor_symbol("%s()\n",
+ (unsigned long) *call);
+ }
+
if (result && result != -ENODEV && initcall_debug) {
sprintf(msgbuf, "error code %d", result);
msg = msgbuf;
_
Patches currently in -mm which might be from mingo@xxxxxxx are
origin.patch
git-ieee1394.patch
git-kvm.patch
forcedeth-improve-napi-logic.patch
only-allow-nonlinear-vmas-for-ram-backed-filesystems.patch
cpuset-remove-sched-domain-hooks-from-cpusets.patch
mutex_lock_interruptible-add-__must_check.patch
fix-printk-format-warnings-in-timer_listc.patch
schedule_on_each_cpu-use-preempt_disable.patch
workqueue-kill-run_scheduled_work.patch
workqueue-dont-save-interrupts-in-run_workqueue.patch
workqueue-make-cancel_rearming_delayed_workqueue-work-on-idle-dwork.patch
workqueue-introduce-cpu_singlethread_map.patch
workqueue-introduce-workqueue_struct-singlethread.patch
workqueue-make-init_workqueues-__init.patch
freezer-add-try_to_freeze-calls-to-all-kernel-threads.patch
introduce-freezer-flags-rev-2.patch
aio-is-unlikely.patch
sched-add-above-background-load-function.patch
mm-implement-swap-prefetching.patch
declare-struct-ktime.patch
futex-priority-based-wakeup.patch
make-futex_wait-use-an-hrtimer-for-timeout.patch
futex_requeue_pi-optimization.patch
futex-new-private-futexes.patch
timer-parenthesis-fix-in-tbase_get_deferrable-etc.patch
clocksource-fix-resume-logic.patch
clockevents-fix-resume-logic-updated-version.patch
timer_stats-slimmed-down-using-statistics-infrastucture.patch
detect-atomic-counter-underflows.patch
make-frame_pointer-default=y.patch
mutex-subsystem-synchro-test-module.patch
vdso-print-fatal-signals.patch
vdso-improve-print_fatal_signals-support-by-adding-memory-maps.patch
vdso-print-fatal-signals-use-ctl_unnumbered.patch
lockdep-show-held-locks-when-showing-a-stackdump.patch
kmap_atomic-debugging.patch
random-warning-squishes.patch
-
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