From: Jim Cromie <jim.cromie@gmail.com>
To: jbaron@akamai.com, linux-kernel@vger.kernel.org,
akpm@linuxfoundation.org, gregkh@linuxfoundation.org
Cc: linux@rasmusvillemoes.dk, Jim Cromie <jim.cromie@gmail.com>
Subject: [PATCH v2 23/24] kset-example: add pr_debug()s for easy visibility of its operation
Date: Sat, 13 Jun 2020 09:57:37 -0600 [thread overview]
Message-ID: <20200613155738.2249399-24-jim.cromie@gmail.com> (raw)
In-Reply-To: <20200613155738.2249399-1-jim.cromie@gmail.com>
put pr_debug()s into most functions, to easily see code operate when
module is loaded and used.
#> dmesg -w &
#> modprobe kset-example dyndbg=+pfml
#> cat /sys/kernel/kset-example/*/*
---
samples/kobject/kset-example.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c
index c8010f126808..27c9b1beec28 100644
--- a/samples/kobject/kset-example.c
+++ b/samples/kobject/kset-example.c
@@ -56,6 +56,7 @@ static ssize_t foo_attr_show(struct kobject *kobj,
struct foo_attribute *attribute;
struct foo_obj *foo;
+ pr_debug("called");
attribute = to_foo_attr(attr);
foo = to_foo_obj(kobj);
@@ -76,6 +77,7 @@ static ssize_t foo_attr_store(struct kobject *kobj,
struct foo_attribute *attribute;
struct foo_obj *foo;
+ pr_debug("called");
attribute = to_foo_attr(attr);
foo = to_foo_obj(kobj);
@@ -102,6 +104,7 @@ static void foo_release(struct kobject *kobj)
{
struct foo_obj *foo;
+ pr_debug("called");
foo = to_foo_obj(kobj);
kfree(foo);
}
@@ -112,6 +115,7 @@ static void foo_release(struct kobject *kobj)
static ssize_t foo_show(struct foo_obj *foo_obj, struct foo_attribute *attr,
char *buf)
{
+ pr_debug("called");
return sprintf(buf, "%d\n", foo_obj->foo);
}
@@ -120,6 +124,7 @@ static ssize_t foo_store(struct foo_obj *foo_obj, struct foo_attribute *attr,
{
int ret;
+ pr_debug("called");
ret = kstrtoint(buf, 10, &foo_obj->foo);
if (ret < 0)
return ret;
@@ -140,6 +145,7 @@ static ssize_t b_show(struct foo_obj *foo_obj, struct foo_attribute *attr,
{
int var;
+ pr_debug("called");
if (strcmp(attr->attr.name, "baz") == 0)
var = foo_obj->baz;
else
@@ -152,6 +158,7 @@ static ssize_t b_store(struct foo_obj *foo_obj, struct foo_attribute *attr,
{
int var, ret;
+ pr_debug("called");
ret = kstrtoint(buf, 10, &var);
if (ret < 0)
return ret;
@@ -201,6 +208,7 @@ static struct foo_obj *create_foo_obj(const char *name)
struct foo_obj *foo;
int retval;
+ pr_debug("called");
/* allocate the memory for the whole object */
foo = kzalloc(sizeof(*foo), GFP_KERNEL);
if (!foo)
@@ -235,11 +243,13 @@ static struct foo_obj *create_foo_obj(const char *name)
static void destroy_foo_obj(struct foo_obj *foo)
{
+ pr_debug("called");
kobject_put(&foo->kobj);
}
static int __init example_init(void)
{
+ pr_debug("called");
/*
* Create a kset with the name of "kset_example",
* located under /sys/kernel/
@@ -276,6 +286,7 @@ static int __init example_init(void)
static void __exit example_exit(void)
{
+ pr_debug("called");
destroy_foo_obj(baz_obj);
destroy_foo_obj(bar_obj);
destroy_foo_obj(foo_obj);
--
2.26.2
next prev parent reply other threads:[~2020-06-13 15:58 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-13 15:57 [PATCH v2 00/24] dynamic_debug cleanups, query features, WIP print-classes Jim Cromie
2020-06-13 15:57 ` [PATCH v2 01/24] dyndbg-docs: eschew file /full/path query in docs Jim Cromie
2020-06-14 6:04 ` Greg KH
2020-06-14 14:24 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 02/24] dyndbg-docs: initialization is done early, not arch Jim Cromie
2020-06-13 15:57 ` [PATCH v2 03/24] dyndbg: drop obsolete comment on ddebug_proc_open Jim Cromie
2020-06-13 15:57 ` [PATCH v2 04/24] dyndbg: refine debug verbosity; 1 is basic, 2 more chatty Jim Cromie
2020-06-13 15:57 ` [PATCH v2 05/24] dyndbg: rename __verbose section to __dyndbg Jim Cromie
2020-06-13 15:57 ` [PATCH v2 06/24] dyndbg: fix overcounting of ram used by dyndbg Jim Cromie
2020-06-13 15:57 ` [PATCH v2 07/24] dyndbg: fix a BUG_ON in ddebug_describe_flags Jim Cromie
2020-06-15 13:20 ` Petr Mladek
2020-06-15 21:53 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 08/24] dyndbg: make ddebug_tables list LIFO for add/remove_module Jim Cromie
2020-06-13 15:57 ` [PATCH v2 09/24] dyndbg: add maybe(str,"") macro to reduce code Jim Cromie
2020-06-13 16:14 ` Joe Perches
2020-06-15 20:50 ` jim.cromie
2020-06-15 13:28 ` Petr Mladek
2020-06-15 20:52 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 10/24] dyndbg: refactor parse_linerange out of ddebug_parse_query Jim Cromie
2020-06-15 13:37 ` Petr Mladek
2020-06-15 22:37 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 11/24] dyndbg: accept 'file foo.c:func1' and 'file foo.c:10-100' Jim Cromie
2020-06-15 14:46 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 12/24] dyndbg: refactor ddebug_read_flags out of ddebug_parse_flags Jim Cromie
2020-06-13 15:57 ` [PATCH v2 13/24] dyndbg: combine flags & mask into a struct, use that Jim Cromie
2020-06-15 15:14 ` Petr Mladek
2020-06-16 5:47 ` jim.cromie
2020-06-16 11:34 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 14/24] dyndbg: add filter parameter to ddebug_parse_flags Jim Cromie
2020-06-15 15:17 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 15/24] dyndbg: extend ddebug_parse_flags to accept optional leading filter-flags Jim Cromie
2020-06-15 15:37 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 16/24] dyndbg: prefer declarative init in caller, to memset in callee Jim Cromie
2020-06-13 15:57 ` [PATCH v2 17/24] dyndbg: add user-flag, negating-flags, and filtering on flags Jim Cromie
2020-06-16 11:41 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 18/24] dyndbg: allow negating flag-chars in modflags Jim Cromie
2020-06-16 11:47 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 19/24] dyndbg: accept query terms like module:foo and file=bar Jim Cromie
2020-06-16 11:57 ` Petr Mladek
2020-06-16 20:08 ` jim.cromie
2020-06-17 12:11 ` Petr Mladek
2020-06-17 13:32 ` jim.cromie
2020-06-17 14:01 ` Greg KH
2020-06-13 15:57 ` [PATCH v2 20/24] dyndbg: WIP towards debug-print-class based callsite controls Jim Cromie
2020-06-13 19:22 ` Joe Perches
2020-06-16 13:45 ` Petr Mladek
2020-06-16 21:05 ` Joe Perches
2020-06-17 9:31 ` Daniel Thompson
2020-06-17 9:52 ` Petr Mladek
2020-06-17 13:23 ` jim.cromie
2020-06-18 12:20 ` Petr Mladek
2020-06-16 21:13 ` jim.cromie
2020-06-16 21:25 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 21/24] dyndbg: adapt header macros to pass print-class Jim Cromie
2020-06-13 17:11 ` kernel test robot
2020-06-13 20:25 ` kernel test robot
2020-06-13 15:57 ` [PATCH v2 22/24] dyndbg: add print-class as trailing number to control output Jim Cromie
2020-06-13 15:57 ` Jim Cromie [this message]
2020-06-14 6:05 ` [PATCH v2 23/24] kset-example: add pr_debug()s for easy visibility of its operation Greg KH
2020-06-15 22:18 ` jim.cromie
2020-06-16 6:37 ` Greg KH
2020-06-13 15:57 ` [PATCH v2 24/24] kset-example: use pr_debug_n to create example print-classes Jim Cromie
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200613155738.2249399-24-jim.cromie@gmail.com \
--to=jim.cromie@gmail.com \
--cc=akpm@linuxfoundation.org \
--cc=gregkh@linuxfoundation.org \
--cc=jbaron@akamai.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).