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trace: Move trace event enable from fs_initcall to core_initcall

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This patch splits trace event initialization in two stages:
 * ftrace enable
 * sysfs event entry creation

This allows to capture trace events from an earlier point
by using 'trace_event' kernel parameter and is important
to trace boot-up allocations.

Note that, in order to enable events at core_initcall,
it's necessary to move init_ftrace_syscalls() from
core_initcall to early_initcall.

Link: http://lkml.kernel.org/r/1347461277-25302-1-git-send-email-elezegarcia@gmail.com

Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Ezequiel Garcia
2012-09-12 11:47:57 -03:00
committed by Steven Rostedt
parent 5224c3a315
commit 8781915ad2
2 changed files with 73 additions and 37 deletions
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2
kernel/trace/trace_syscalls.c
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@@ -487,7 +487,7 @@ int __init init_ftrace_syscalls(void)
return 0;
}
core_initcall(init_ftrace_syscalls);
early_initcall(init_ftrace_syscalls);
#ifdef CONFIG_PERF_EVENTS