* Re: [PATCH v7 01/13] tools lib traceevent: Convert remaining %p[fF] users to %p[sS]
2019-09-18 13:34 ` [PATCH v7 01/13] tools lib traceevent: Convert remaining %p[fF] users to %p[sS] Sakari Ailus
@ 2019-09-18 13:58 ` Steven Rostedt
2019-09-18 15:22 ` Andy Shevchenko
2019-09-20 16:20 ` [tip: perf/urgent] " tip-bot2 for Sakari Ailus
2 siblings, 0 replies; 4+ messages in thread
From: Steven Rostedt @ 2019-09-18 13:58 UTC (permalink / raw)
To: Sakari Ailus
Cc: Petr Mladek, linux-kernel, rafael, Andy Shevchenko, linux-acpi,
devicetree, Rob Herring, Heikki Krogerus, Joe Perches,
Arnaldo Carvalho de Melo, Tzvetomir Stoyanov, linux-trace-devel,
Jiri Olsa, Namhyung Kim
On Wed, 18 Sep 2019 16:34:07 +0300
Sakari Ailus <sakari.ailus@linux.intel.com> wrote:
> There are no in-kernel %p[fF] users left. Convert the traceevent tool,
> too, to align with the kernel.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Tzvetomir Stoyanov <tstoyanov@vmware.com>
> Cc: linux-trace-devel@vger.kernel.org
> Cc: Jiri Olsa <jolsa@redhat.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> ---
> .../Documentation/libtraceevent-func_apis.txt | 10 +++++-----
> tools/lib/traceevent/event-parse.c | 18 ++++++++++++++----
> 2 files changed, 19 insertions(+), 9 deletions(-)
>
> diff --git a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt b/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
> index 38bfea30a5f64..f6aca0df2151a 100644
> --- a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
> +++ b/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
> @@ -59,12 +59,12 @@ parser context.
>
> The _tep_register_function()_ function registers a function name mapped to an
> address and (optional) module. This mapping is used in case the function tracer
> -or events have "%pF" or "%pS" parameter in its format string. It is common to
> -pass in the kallsyms function names with their corresponding addresses with this
> +or events have "%pS" parameter in its format string. It is common to pass in
> +the kallsyms function names with their corresponding addresses with this
> function. The _tep_ argument is the trace event parser context. The _name_ is
> -the name of the function, the string is copied internally. The _addr_ is
> -the start address of the function. The _mod_ is the kernel module
> -the function may be in (NULL for none).
> +the name of the function, the string is copied internally. The _addr_ is the
> +start address of the function. The _mod_ is the kernel module the function may
> +be in (NULL for none).
>
> The _tep_register_print_string()_ function registers a string by the address
> it was stored in the kernel. Some strings internal to the kernel with static
> diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
> index b36b536a9fcba..2189621b616bc 100644
> --- a/tools/lib/traceevent/event-parse.c
> +++ b/tools/lib/traceevent/event-parse.c
> @@ -4335,10 +4335,20 @@ static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, s
> switch (*ptr) {
> case 's':
> case 'S':
> - case 'f':
> - case 'F':
> case 'x':
> break;
> + case 'f':
> + case 'F':
> + /*
> + * Pre-5.5 kernels use %pf and
> + * %pF for printing symbols
> + * while kernels since 5.5 use
> + * %pfw for fwnodes. So check
> + * %p[fF] isn't followed by 'w'.
> + */
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
-- Steve
> + if (ptr[1] != 'w')
> + break;
> + /* fall through */
> default:
> /*
> * Older kernels do not process
> @@ -4455,12 +4465,12 @@ get_bprint_format(void *data, int size __maybe_unused,
>
> printk = find_printk(tep, addr);
> if (!printk) {
> - if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0)
> + if (asprintf(&format, "%%ps: (NO FORMAT FOUND at %llx)\n", addr) < 0)
> return NULL;
> return format;
> }
>
> - if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0)
> + if (asprintf(&format, "%s: %s", "%ps", printk->printk) < 0)
> return NULL;
>
> return format;
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v7 01/13] tools lib traceevent: Convert remaining %p[fF] users to %p[sS]
2019-09-18 13:34 ` [PATCH v7 01/13] tools lib traceevent: Convert remaining %p[fF] users to %p[sS] Sakari Ailus
2019-09-18 13:58 ` Steven Rostedt
@ 2019-09-18 15:22 ` Andy Shevchenko
2019-09-20 16:20 ` [tip: perf/urgent] " tip-bot2 for Sakari Ailus
2 siblings, 0 replies; 4+ messages in thread
From: Andy Shevchenko @ 2019-09-18 15:22 UTC (permalink / raw)
To: Sakari Ailus
Cc: Petr Mladek, linux-kernel, rafael, linux-acpi, devicetree,
Rob Herring, Heikki Krogerus, Joe Perches, Steven Rostedt,
Arnaldo Carvalho de Melo, Tzvetomir Stoyanov, linux-trace-devel,
Jiri Olsa, Namhyung Kim
On Wed, Sep 18, 2019 at 04:34:07PM +0300, Sakari Ailus wrote:
> There are no in-kernel %p[fF] users left. Convert the traceevent tool,
> too, to align with the kernel.
> function. The _tep_ argument is the trace event parser context. The _name_ is
> -the name of the function, the string is copied internally. The _addr_ is
> -the start address of the function. The _mod_ is the kernel module
> -the function may be in (NULL for none).
> +the name of the function, the string is copied internally. The _addr_ is the
> +start address of the function. The _mod_ is the kernel module the function may
> +be in (NULL for none).
I think this is unneeded churn (reformating string). But since maintainer Acked
this, I don't care much. But think about burden to the Git index in million of
instances around the world.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 4+ messages in thread
* [tip: perf/urgent] tools lib traceevent: Convert remaining %p[fF] users to %p[sS]
2019-09-18 13:34 ` [PATCH v7 01/13] tools lib traceevent: Convert remaining %p[fF] users to %p[sS] Sakari Ailus
2019-09-18 13:58 ` Steven Rostedt
2019-09-18 15:22 ` Andy Shevchenko
@ 2019-09-20 16:20 ` tip-bot2 for Sakari Ailus
2 siblings, 0 replies; 4+ messages in thread
From: tip-bot2 for Sakari Ailus @ 2019-09-20 16:20 UTC (permalink / raw)
To: linux-tip-commits
Cc: Sakari Ailus, Andy Shevchenko, devicetree, Heikki Krogerus,
Jiri Olsa, Joe Perches, linux-acpi, linux-trace-devel,
Namhyung Kim, Petr Mladek, Rafael J. Wysocki, Rob Herring,
Steven Rostedt (VMware),
Tzvetomir Stoyanov, Arnaldo Carvalho de Melo, Ingo Molnar,
Borislav Petkov, linux-kernel
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: b295c3e39c1383e06ba1db4dd836018502e2ff3a
Gitweb: https://git.kernel.org/tip/b295c3e39c1383e06ba1db4dd836018502e2ff3a
Author: Sakari Ailus <sakari.ailus@linux.intel.com>
AuthorDate: Wed, 18 Sep 2019 16:34:07 +03:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Fri, 20 Sep 2019 10:28:26 -03:00
tools lib traceevent: Convert remaining %p[fF] users to %p[sS]
There are no in-kernel %p[fF] users left. Convert the traceevent tool,
too, to align with the kernel.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: devicetree@vger.kernel.org
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Link: http://lore.kernel.org/lkml/20190918133419.7969-2-sakari.ailus@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt | 10 ++--
tools/lib/traceevent/event-parse.c | 18 +++++--
2 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt b/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
index 38bfea3..f6aca0d 100644
--- a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
+++ b/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt
@@ -59,12 +59,12 @@ parser context.
The _tep_register_function()_ function registers a function name mapped to an
address and (optional) module. This mapping is used in case the function tracer
-or events have "%pF" or "%pS" parameter in its format string. It is common to
-pass in the kallsyms function names with their corresponding addresses with this
+or events have "%pS" parameter in its format string. It is common to pass in
+the kallsyms function names with their corresponding addresses with this
function. The _tep_ argument is the trace event parser context. The _name_ is
-the name of the function, the string is copied internally. The _addr_ is
-the start address of the function. The _mod_ is the kernel module
-the function may be in (NULL for none).
+the name of the function, the string is copied internally. The _addr_ is the
+start address of the function. The _mod_ is the kernel module the function may
+be in (NULL for none).
The _tep_register_print_string()_ function registers a string by the address
it was stored in the kernel. Some strings internal to the kernel with static
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index bb22238..6f842af 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4367,10 +4367,20 @@ static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, s
switch (*ptr) {
case 's':
case 'S':
- case 'f':
- case 'F':
case 'x':
break;
+ case 'f':
+ case 'F':
+ /*
+ * Pre-5.5 kernels use %pf and
+ * %pF for printing symbols
+ * while kernels since 5.5 use
+ * %pfw for fwnodes. So check
+ * %p[fF] isn't followed by 'w'.
+ */
+ if (ptr[1] != 'w')
+ break;
+ /* fall through */
default:
/*
* Older kernels do not process
@@ -4487,12 +4497,12 @@ get_bprint_format(void *data, int size __maybe_unused,
printk = find_printk(tep, addr);
if (!printk) {
- if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0)
+ if (asprintf(&format, "%%ps: (NO FORMAT FOUND at %llx)\n", addr) < 0)
return NULL;
return format;
}
- if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0)
+ if (asprintf(&format, "%s: %s", "%ps", printk->printk) < 0)
return NULL;
return format;
^ permalink raw reply related [flat|nested] 4+ messages in thread