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Message-Id: <20200819104655.436656-10-christian.brauner@ubuntu.com>
Date: Wed, 19 Aug 2020 12:46:53 +0200
From: Christian Brauner <christian.brauner@...ntu.com>
To: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Jonathan Corbet <corbet@....net>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Tony Luck <tony.luck@...el.com>,
Fenghua Yu <fenghua.yu@...el.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Ley Foon Tan <ley.foon.tan@...el.com>,
"David S. Miller" <davem@...emloft.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
x86@...nel.org, Arnd Bergmann <arnd@...db.de>,
Steven Rostedt <rostedt@...dmis.org>,
Stafford Horne <shorne@...il.com>,
Peter Zijlstra <peterz@...radead.org>,
Kars de Jong <jongk@...ux-m68k.org>,
Kees Cook <keescook@...omium.org>,
Greentime Hu <green.hu@...il.com>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
Alexandre Chartre <alexandre.chartre@...cle.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Tom Zanussi <zanussi@...nel.org>,
Xiao Yang <yangx.jy@...fujitsu.com>, linux-doc@...r.kernel.org,
uclinux-h8-devel@...ts.sourceforge.jp, linux-ia64@...r.kernel.org,
linux-m68k@...ts.linux-m68k.org, sparclinux@...r.kernel.org,
kgdb-bugreport@...ts.sourceforge.net,
linux-kselftest@...r.kernel.org,
Linus Torvalds <torvalds@...ux-foundation.org>,
Christoph Hewllig <hch@...radead.org>,
Matthew Wilcox <willy@...radead.org>,
Christian Brauner <christian.brauner@...ntu.com>,
Douglas Anderson <dianders@...omium.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Daniel Thompson <daniel.thompson@...aro.org>,
Jason Wessel <jason.wessel@...driver.com>
Subject: [PATCH v2 09/11] kgdbts: 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.
Cc: Douglas Anderson <dianders@...omium.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Daniel Thompson <daniel.thompson@...aro.org>
Cc: Jason Wessel <jason.wessel@...driver.com>
Cc: kgdb-bugreport@...ts.sourceforge.net
Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>
---
/* v2 */
unchanged
---
drivers/misc/kgdbts.c | 48 +++++++++++++++++++++----------------------
1 file changed, 24 insertions(+), 24 deletions(-)
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index d5d2af4d10e6..945701bce553 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -33,16 +33,16 @@
* You can also specify optional tests:
* N## = Go to sleep with interrupts of for ## seconds
* to test the HW NMI watchdog
- * F## = Break at do_fork for ## iterations
+ * F## = Break at kernel_clone for ## iterations
* S## = Break at sys_open for ## iterations
* I## = Run the single step test ## iterations
*
- * NOTE: that the do_fork and sys_open tests are mutually exclusive.
+ * NOTE: that the kernel_clone and sys_open tests are mutually exclusive.
*
* To invoke the kgdb test suite from boot you use a kernel start
* argument as follows:
* kgdbts=V1 kgdbwait
- * Or if you wanted to perform the NMI test for 6 seconds and do_fork
+ * Or if you wanted to perform the NMI test for 6 seconds and kernel_clone
* test for 100 forks, you could use:
* kgdbts=V1N6F100 kgdbwait
*
@@ -74,7 +74,7 @@
* echo kgdbts=V1S10000 > /sys/module/kgdbts/parameters/kgdbts
* fg # and hit control-c
* fg # and hit control-c
- * ## This tests break points on do_fork
+ * ## This tests break points on kernel_clone
* while [ 1 ] ; do date > /dev/null ; done &
* while [ 1 ] ; do date > /dev/null ; done &
* echo kgdbts=V1F1000 > /sys/module/kgdbts/parameters/kgdbts
@@ -209,8 +209,8 @@ static unsigned long lookup_addr(char *arg)
addr = (unsigned long)kgdbts_break_test;
else if (!strcmp(arg, "sys_open"))
addr = (unsigned long)do_sys_open;
- else if (!strcmp(arg, "do_fork"))
- addr = (unsigned long)_do_fork;
+ else if (!strcmp(arg, "kernel_clone"))
+ addr = (unsigned long)kernel_clone;
else if (!strcmp(arg, "hw_break_val"))
addr = (unsigned long)&hw_break_val;
addr = (unsigned long) dereference_function_descriptor((void *)addr);
@@ -310,7 +310,7 @@ static int check_and_rewind_pc(char *put_str, char *arg)
if (arch_needs_sstep_emulation && sstep_addr &&
ip + offset == sstep_addr &&
- ((!strcmp(arg, "sys_open") || !strcmp(arg, "do_fork")))) {
+ ((!strcmp(arg, "sys_open") || !strcmp(arg, "kernel_clone")))) {
/* This is special case for emulated single step */
v2printk("Emul: rewind hit single step bp\n");
restart_from_top_after_write = 1;
@@ -596,19 +596,19 @@ static struct test_struct singlestep_break_test[] = {
};
/*
- * Test for hitting a breakpoint at do_fork for what ever the number
+ * Test for hitting a breakpoint at kernel_clone for what ever the number
* of iterations required by the variable repeat_test.
*/
-static struct test_struct do_fork_test[] = {
+static struct test_struct do_kernel_clone_test[] = {
{ "?", "S0*" }, /* Clear break points */
- { "do_fork", "OK", sw_break, }, /* set sw breakpoint */
+ { "kernel_clone", "OK", sw_break, }, /* set sw breakpoint */
{ "c", "T0*", NULL, get_thread_id_continue }, /* Continue */
- { "do_fork", "OK", sw_rem_break }, /*remove breakpoint */
- { "g", "do_fork", NULL, check_and_rewind_pc }, /* check location */
+ { "kernel_clone", "OK", sw_rem_break }, /*remove breakpoint */
+ { "g", "kernel_clone", NULL, check_and_rewind_pc }, /* check location */
{ "write", "OK", write_regs, emul_reset }, /* Write registers */
{ "s", "T0*", emul_sstep_get, emul_sstep_put }, /* Single step */
- { "g", "do_fork", NULL, check_single_step },
- { "do_fork", "OK", sw_break, }, /* set sw breakpoint */
+ { "g", "kernel_clone", NULL, check_single_step },
+ { "kernel_clone", "OK", sw_break, }, /* set sw breakpoint */
{ "7", "T0*", skip_back_repeat_test }, /* Loop based on repeat_test */
{ "D", "OK", NULL, final_ack_set }, /* detach and unregister I/O */
{ "", "", get_cont_catch, put_cont_catch },
@@ -935,11 +935,11 @@ static void run_bad_read_test(void)
kgdb_breakpoint();
}
-static void run_do_fork_test(void)
+static void run_kernel_clone_test(void)
{
init_simple_test();
- ts.tst = do_fork_test;
- ts.name = "do_fork_test";
+ ts.tst = do_kernel_clone_test;
+ ts.name = "do_kernel_clone_test";
/* Activate test with initial breakpoint */
kgdb_breakpoint();
}
@@ -967,7 +967,7 @@ static void run_singlestep_break_test(void)
static void kgdbts_run_tests(void)
{
char *ptr;
- int fork_test = 0;
+ int clone_test = 0;
int do_sys_open_test = 0;
int sstep_test = 1000;
int nmi_sleep = 0;
@@ -981,7 +981,7 @@ static void kgdbts_run_tests(void)
ptr = strchr(config, 'F');
if (ptr)
- fork_test = simple_strtol(ptr + 1, NULL, 10);
+ clone_test = simple_strtol(ptr + 1, NULL, 10);
ptr = strchr(config, 'S');
if (ptr)
do_sys_open_test = simple_strtol(ptr + 1, NULL, 10);
@@ -1025,16 +1025,16 @@ static void kgdbts_run_tests(void)
run_nmi_sleep_test(nmi_sleep);
}
- /* If the do_fork test is run it will be the last test that is
+ /* If the kernel_clone test is run it will be the last test that is
* executed because a kernel thread will be spawned at the very
* end to unregister the debug hooks.
*/
- if (fork_test) {
- repeat_test = fork_test;
- printk(KERN_INFO "kgdbts:RUN do_fork for %i breakpoints\n",
+ if (clone_test) {
+ repeat_test = clone_test;
+ printk(KERN_INFO "kgdbts:RUN kernel_clone for %i breakpoints\n",
repeat_test);
kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
- run_do_fork_test();
+ run_kernel_clone_test();
return;
}
--
2.28.0
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