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Date: Tue, 20 Jul 2010 11:16:20 -0700
From: Joe Perches <joe@...ches.com>
To: Bjorn Helgaas <bjorn.helgaas@...com>
Cc: Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>,
David Miller <davem@...emloft.net>
Subject: Re: [PATCH net-next] drivers/acpi/acpica/utmisc.c: Use printk
extension %pV
On Tue, 2010-07-20 at 10:08 -0600, Bjorn Helgaas wrote:
> On Monday, July 19, 2010 11:06:07 pm Joe Perches wrote:
> > Consolidates the printk messages to a single
> > call so the messages can not be interleaved.
> >
> > Reduces text a bit.
> >
> > $ size drivers/acpi/acpica/utmisc.o.*
> > text data bss dec hex filename
> > 7822 56 1832 9710 25ee drivers/acpi/acpica/utmisc.o.old
> > 7748 56 1736 9540 2544 drivers/acpi/acpica/utmisc.o.new
> >
> > Depends on net-next commit 7db6f5fb65a82af03229eef104dc9899c5eecf33
> > (vsprintf: Recursive vsnprintf: Add "%pV", struct va_format)
>
> drivers/acpi/acpica/utmisc.c is part of the ACPI CA and is used in
> several different OSes, but %pV sounds like a Linux-specific feature,
> so I don't see how this patch can work.
Well, maybe something like this then.
It still reduces overall size a little bit, but less.
$ size drivers/acpi/acpica/utmisc.o
text data bss dec hex filename
7816 56 1784 9656 25b8 drivers/acpi/acpica/utmisc.o
I'm not sure that utmisc.c is the right place for an #ifdef though.
---
drivers/acpi/acpica/utmisc.c | 76 +++++++++++++++++++++++++++---------------
1 files changed, 49 insertions(+), 27 deletions(-)
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index e8d0724..874e4d2 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -51,10 +51,45 @@
ACPI_MODULE_NAME("utmisc")
/*
- * Common suffix for messages
+ * Single line messages, adds a newline after message
*/
-#define ACPI_COMMON_MSG_SUFFIX \
- acpi_os_printf(" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
+
+static void ACPI_PRINTF_LIKE(5)
+acpi_put_message(const char *module_name, u32 line_number,
+ const char *fmt, va_list *args, const char *message, ...)
+{
+#ifdef __KERNEL__
+ va_list message_args;
+ struct va_format vaf1;
+ struct va_format vaf2;
+
+ va_start(message_args, message);
+ vaf1.fmt = message;
+ vaf1.va = &message_args;
+ vaf2.fmt = fmt;
+ vaf2.va = args;
+ if (module_name)
+ acpi_os_printf("%pV%pV (%8.8X/%s-%u)\n",
+ &vaf1, &vaf2,
+ ACPI_CA_VERSION, module_name, line_number);
+ else
+ acpi_os_printf("%pV%pV\n", &vaf1, &vaf2);
+ va_end(message_args);
+#else
+ va_list message_args;
+
+ va_start(message_args, message);
+ acpi_os_vprintf(message, message_args);
+ acpi_os_vprintf(fmt, *args);
+ if (module_name)
+ acpi_os_printf(" (%8.8X/%s-%u)\n",
+ ACPI_CA_VERSION, module_name, line_number);
+ else
+ acpi_os_printf("\n");
+ va_end(message_args);
+#endif
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ut_validate_exception
@@ -1064,11 +1099,9 @@ acpi_error(const char *module_name, u32 line_number, const char *format, ...)
{
va_list args;
- acpi_os_printf("ACPI Error: ");
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- ACPI_COMMON_MSG_SUFFIX;
+ acpi_put_message(module_name, line_number, format, &args,
+ "ACPI Error: ");
va_end(args);
}
@@ -1078,11 +1111,9 @@ acpi_exception(const char *module_name,
{
va_list args;
- acpi_os_printf("ACPI Exception: %s, ", acpi_format_exception(status));
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- ACPI_COMMON_MSG_SUFFIX;
+ acpi_put_message(module_name, line_number, format, &args,
+ "ACPI Exception: %s, ", acpi_format_exception(status));
va_end(args);
}
@@ -1091,11 +1122,9 @@ acpi_warning(const char *module_name, u32 line_number, const char *format, ...)
{
va_list args;
- acpi_os_printf("ACPI Warning: ");
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- ACPI_COMMON_MSG_SUFFIX;
+ acpi_put_message(module_name, line_number, format, &args,
+ "ACPI Warning: ");
va_end(args);
}
@@ -1104,11 +1133,8 @@ acpi_info(const char *module_name, u32 line_number, const char *format, ...)
{
va_list args;
- acpi_os_printf("ACPI: ");
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- acpi_os_printf("\n");
+ acpi_put_message(NULL, 0, format, &args, "ACPI: ");
va_end(args);
}
@@ -1152,11 +1178,9 @@ acpi_ut_predefined_warning(const char *module_name,
return;
}
- acpi_os_printf("ACPI Warning for %s: ", pathname);
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- ACPI_COMMON_MSG_SUFFIX;
+ acpi_put_message(module_name, line_number, format, &args,
+ "ACPI Warning for %s: ", pathname);
va_end(args);
}
@@ -1194,10 +1218,8 @@ acpi_ut_predefined_info(const char *module_name,
return;
}
- acpi_os_printf("ACPI Info for %s: ", pathname);
-
va_start(args, format);
- acpi_os_vprintf(format, args);
- ACPI_COMMON_MSG_SUFFIX;
+ acpi_put_message(module_name, line_number, format, &args,
+ "ACPI Info for %s: ", pathname);
va_end(args);
}
--
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