Unverified Commit eea11285 authored by Christian Brauner's avatar Christian Brauner
Browse files

tracing: switch to kernel_clone() 



The old _do_fork() helper is removed in favor of the new kernel_clone() helper.
The latter adheres to naming conventions for kernel internal syscall helpers.

Signed-off-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Alexandre Chartre <alexandre.chartre@oracle.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Xiao Yang <yangx.jy@cn.fujitsu.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Link: https://lore.kernel.org/r/20200819104655.436656-11-christian.brauner@ubuntu.com
parent f30897c1

Documentation/trace/histogram.rst

+2 −2
Original line number Diff line number Diff line
@@ -1495,7 +1495,7 @@ Extended error information 
    #



    { stacktrace:

             _do_fork+0x18e/0x330

             kernel_clone+0x18e/0x330

             kernel_thread+0x29/0x30

             kthreadd+0x154/0x1b0

             ret_from_fork+0x3f/0x70
@@ -1588,7 +1588,7 @@ Extended error information 
             SYSC_sendto+0xef/0x170

    } hitcount:         88

    { stacktrace:

             _do_fork+0x18e/0x330

             kernel_clone+0x18e/0x330

             SyS_clone+0x19/0x20

             entry_SYSCALL_64_fastpath+0x12/0x6a

    } hitcount:        244

samples/kprobes/kretprobe_example.c

+2 −2
Original line number Diff line number Diff line
@@ -8,7 +8,7 @@ 
 *

 * usage: insmod kretprobe_example.ko func=<func_name>

 *

 * If no func_name is specified, _do_fork is instrumented

 * If no func_name is specified, kernel_clone is instrumented

 *

 * For more information on theory of operation of kretprobes, see

 * Documentation/staging/kprobes.rst
@@ -26,7 +26,7 @@ 
#include <linux/limits.h>

#include <linux/sched.h>



static char func_name[NAME_MAX] = "_do_fork";

static char func_name[NAME_MAX] = "kernel_clone";

module_param_string(func, func_name, NAME_MAX, S_IRUGO);

MODULE_PARM_DESC(func, "Function to kretprobe; this module will report the"

			" function's execution time");

tools/testing/selftests/ftrace/test.d/dynevent/add_remove_kprobe.tc

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ 
echo 0 > events/enable

echo > dynamic_events



PLACE=_do_fork

PLACE=kernel_clone



echo "p:myevent1 $PLACE" >> dynamic_events

echo "r:myevent2 $PLACE" >> dynamic_events

tools/testing/selftests/ftrace/test.d/dynevent/clear_select_events.tc

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ 
echo 0 > events/enable

echo > dynamic_events



PLACE=_do_fork

PLACE=kernel_clone



setup_events() {

echo "p:myevent1 $PLACE" >> dynamic_events

tools/testing/selftests/ftrace/test.d/dynevent/generic_clear_event.tc

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ 
echo 0 > events/enable

echo > dynamic_events



PLACE=_do_fork

PLACE=kernel_clone



setup_events() {

echo "p:myevent1 $PLACE" >> dynamic_events

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