linux-kernel - [PATCH v2 13/27] dyndbg: add __pr_debug

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Date:   Mon, 16 May 2022 16:56:26 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     jbaron@...mai.com, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org
Cc:     gregkh@...uxfoundation.org, daniel.vetter@...ll.ch,
        seanpaul@...omium.org, robdclark@...il.com, rostedt@...dmis.org,
        mathieu.desnoyers@...icios.com, quic_saipraka@...cinc.com,
        will@...nel.org, catalin.marinas@....com,
        quic_psodagud@...cinc.com, maz@...nel.org, arnd@...db.de,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, mingo@...hat.com,
        jim.cromie@...il.com
Subject: [PATCH v2 13/27] dyndbg: add __pr_debug_cls(class, fmt, ...)

For selftest purposes, add __pr_debug_cls(class, fmt, ...)

I didn't think we'd need to define this, since DRM effectively has it
already.  But test_dynamic_debug needs it in order to demonstrate all
the moving parts.

Note the __ prefix; its not intended for general use, and doesn't
include any builtin-constant checks that could pertain.  I'd prefer to
see a use-case where copying the drm.debug model isn't better.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 include/linux/dynamic_debug.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index e9e6d0f503f3..abf43e28d8d3 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -216,6 +216,10 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 					_DPRINTK_CLASS_DFLT,	\
 					fmt, func, ##__VA_ARGS__)
 
+#define dynamic_pr_debug_cls(cls, fmt, ...)				\
+	_dynamic_func_call_cls(cls, fmt, __dynamic_pr_debug,		\
+			   pr_fmt(fmt), ##__VA_ARGS__)
+
 #define dynamic_pr_debug(fmt, ...)				\
 	_dynamic_func_call(fmt,	__dynamic_pr_debug,		\
 			   pr_fmt(fmt), ##__VA_ARGS__)
@@ -246,6 +250,9 @@ struct kernel_param;
 int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp);
 int param_get_dyndbg_classes(char *buffer, const struct kernel_param *kp);
 
+#define __pr_debug_cls(cls, fmt, ...)		\
+	dynamic_pr_debug_cls(cls, fmt, ##__VA_ARGS__)
+
 #else /* !CONFIG_DYNAMIC_DEBUG_CORE */
 
 #include <linux/string.h>
-- 
2.35.3