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Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits)
  tracing/fastboot: improve help text
  tracing/stacktrace: improve help text
  tracing/fastboot: fix initcalls disposition in bootgraph.pl
  tracing/fastboot: fix bootgraph.pl initcall name regexp
  tracing/fastboot: fix issues and improve output of bootgraph.pl
  tracepoints: synchronize unregister static inline
  tracepoints: tracepoint_synchronize_unregister()
  ftrace: make ftrace_test_p6nop disassembler-friendly
  markers: fix synchronize marker unregister static inline
  tracing/fastboot: add better resolution to initcall debug/tracing
  trace: add build-time check to avoid overrunning hex buffer
  ftrace: fix hex output mode of ftrace
  tracing/fastboot: fix initcalls disposition in bootgraph.pl
  tracing/fastboot: fix printk format typo in boot tracer
  ftrace: return an error when setting a nonexistent tracer
  ftrace: make some tracers reentrant
  ring-buffer: make reentrant
  ring-buffer: move page indexes into page headers
  tracing/fastboot: only trace non-module initcalls
  ftrace: move pc counter in irqtrace
  ...

Manually fix conflicts:
 - init/main.c: initcall tracing
 - kernel/module.c: verbose level vs tracepoints
 - scripts/bootgraph.pl: fallout from cherry-picking commits.
This commit is contained in:
Linus Torvalds
2008-10-20 13:35:07 -07:00
parent b9d7ccf56b 98d9c66ab0
commit 92b29b86fe
65 changed files with 6137 additions and 1614 deletions
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34
init/main.c
View File

@@ -61,6 +61,7 @@
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/idr.h>
#include <linux/ftrace.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -689,6 +690,8 @@ asmlinkage void __init start_kernel(void)
acpi_early_init(); /* before LAPIC and SMP init */
ftrace_init();
/* Do the rest non-__init'ed, we're now alive */
rest_init();
}
@@ -705,30 +708,31 @@ __setup("initcall_debug", initcall_debug_setup);
int do_one_initcall(initcall_t fn)
{
int count = preempt_count();
ktime_t t0, t1, delta;
ktime_t delta;
char msgbuf[64];
int result;
struct boot_trace it;
if (initcall_debug) {
printk("calling %pF @ %i\n", fn, task_pid_nr(current));
t0 = ktime_get();
it.caller = task_pid_nr(current);
printk("calling %pF @ %i\n", fn, it.caller);
it.calltime = ktime_get();
}
result = fn();
it.result = fn();
if (initcall_debug) {
t1 = ktime_get();
delta = ktime_sub(t1, t0);
printk("initcall %pF returned %d after %Ld msecs\n",
fn, result,
(unsigned long long) delta.tv64 >> 20);
it.rettime = ktime_get();
delta = ktime_sub(it.rettime, it.calltime);
it.duration = (unsigned long long) delta.tv64 >> 10;
printk("initcall %pF returned %d after %Ld usecs\n", fn,
it.result, it.duration);
trace_boot(&it, fn);
}
msgbuf[0] = 0;
if (result && result != -ENODEV && initcall_debug)
sprintf(msgbuf, "error code %d ", result);
if (it.result && it.result != -ENODEV && initcall_debug)
sprintf(msgbuf, "error code %d ", it.result);
if (preempt_count() != count) {
strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
@@ -742,7 +746,7 @@ int do_one_initcall(initcall_t fn)
printk("initcall %pF returned with %s\n", fn, msgbuf);
}
return result;
return it.result;
}
@@ -857,6 +861,7 @@ static int __init kernel_init(void * unused)
smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
start_boot_trace();
smp_init();
sched_init_smp();
@@ -883,6 +888,7 @@ static int __init kernel_init(void * unused)
* we're essentially up and running. Get rid of the
* initmem segments and start the user-mode stuff..
*/
stop_boot_trace();
init_post();
return 0;
}