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Date: Wed, 4 Feb 2015 14:35:15 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Joe Perches <joe@...ches.com>
Cc: Rasmus Villemoes <linux@...musvillemoes.dk>,
Michal Nazarewicz <mina86@...a86.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kernel.h: Remove ancient __FUNCTION__ hack
On Wed, 04 Feb 2015 14:05:15 -0800 Joe Perches <joe@...ches.com> wrote:
> On Wed, 2015-02-04 at 23:01 +0100, Rasmus Villemoes wrote:
> > On Wed, Feb 04 2015, Joe Perches <joe@...ches.com> wrote:
> >
> > > On Wed, 2015-02-04 at 21:55 +0100, Rasmus Villemoes wrote:
> > >> On Wed, Feb 04 2015, Joe Perches <joe@...ches.com> wrote:
> > >>
> > >> > On Wed, 2015-02-04 at 10:48 +0100, Rasmus Villemoes wrote:
> > >> >> __FUNCTION__ hasn't been treated as a string literal since gcc 3.4, so
> > >> >> this only helps people who only test-compile using 3.3
> > >> >> (compiler-gcc3.h barks at anything older than that). Besides, there
> > >> >> are almost no occurrences of __FUNCTION__ left in the tree.
> > >> >
> > >> > The remaining uses of __FUNCTION__ need converting first.
> > >>
> > >> Why? __FUNCTION__ is recognized just fine by gcc as an alias for __func__.
> > >
> > > And icc and clang and ...?
> >
> > clang yes, icc probably (from quick googling).
>
> Cool, but it does seem safer/more conservative to me to
> convert the last 3 uses before doing this.
arch/x86/kernel/hpet.c | 2 +-
arch/x86/kernel/rtc.c | 4 ++--
arch/x86/platform/intel-mid/intel_mid_vrtc.c | 2 +-
drivers/acpi/acpica/utdebug.c | 4 ++--
drivers/block/xen-blkfront.c | 2 +-
include/acpi/acoutput.h | 6 +++---
6 files changed, 10 insertions(+), 10 deletions(-)
diff -puN include/linux/kernel.h~kernelh-remove-ancient-__function__-hack-fix include/linux/kernel.h
diff -puN arch/x86/kernel/hpet.c~kernelh-remove-ancient-__function__-hack-fix arch/x86/kernel/hpet.c
--- a/arch/x86/kernel/hpet.c~kernelh-remove-ancient-__function__-hack-fix
+++ a/arch/x86/kernel/hpet.c
@@ -168,7 +168,7 @@ static void _hpet_print_config(const cha
#define hpet_print_config() \
do { \
if (hpet_verbose) \
- _hpet_print_config(__FUNCTION__, __LINE__); \
+ _hpet_print_config(__func__, __LINE__); \
} while (0)
/*
diff -puN arch/x86/kernel/rtc.c~kernelh-remove-ancient-__function__-hack-fix arch/x86/kernel/rtc.c
--- a/arch/x86/kernel/rtc.c~kernelh-remove-ancient-__function__-hack-fix
+++ a/arch/x86/kernel/rtc.c
@@ -49,11 +49,11 @@ int mach_set_rtc_mmss(const struct times
retval = set_rtc_time(&tm);
if (retval)
printk(KERN_ERR "%s: RTC write failed with error %d\n",
- __FUNCTION__, retval);
+ __func__, retval);
} else {
printk(KERN_ERR
"%s: Invalid RTC value: write of %lx to RTC failed\n",
- __FUNCTION__, nowtime);
+ __func__, nowtime);
retval = -EINVAL;
}
return retval;
diff -puN arch/x86/platform/intel-mid/intel_mid_vrtc.c~kernelh-remove-ancient-__function__-hack-fix arch/x86/platform/intel-mid/intel_mid_vrtc.c
--- a/arch/x86/platform/intel-mid/intel_mid_vrtc.c~kernelh-remove-ancient-__function__-hack-fix
+++ a/arch/x86/platform/intel-mid/intel_mid_vrtc.c
@@ -110,7 +110,7 @@ int vrtc_set_mmss(const struct timespec
spin_unlock_irqrestore(&rtc_lock, flags);
} else {
pr_err("%s: Invalid vRTC value: write of %lx to vRTC failed\n",
- __FUNCTION__, now->tv_sec);
+ __func__, now->tv_sec);
retval = -EINVAL;
}
return retval;
diff -puN drivers/block/xen-blkfront.c~kernelh-remove-ancient-__function__-hack-fix drivers/block/xen-blkfront.c
--- a/drivers/block/xen-blkfront.c~kernelh-remove-ancient-__function__-hack-fix
+++ a/drivers/block/xen-blkfront.c
@@ -1391,7 +1391,7 @@ static int blkfront_probe(struct xenbus_
if (major != XENVBD_MAJOR) {
printk(KERN_INFO
"%s: HVM does not support vbd %d as xen block device\n",
- __FUNCTION__, vdevice);
+ __func__, vdevice);
return -ENODEV;
}
}
diff -puN include/acpi/acoutput.h~kernelh-remove-ancient-__function__-hack-fix include/acpi/acoutput.h
--- a/include/acpi/acoutput.h~kernelh-remove-ancient-__function__-hack-fix
+++ a/include/acpi/acoutput.h
@@ -240,7 +240,7 @@
/*
* If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
* define it now. This is the case where there the compiler does not support
- * a __FUNCTION__ macro or equivalent.
+ * a __func__ macro or equivalent.
*/
#ifndef ACPI_GET_FUNCTION_NAME
#define ACPI_GET_FUNCTION_NAME _acpi_function_name
@@ -249,12 +249,12 @@
* The Name parameter should be the procedure name as a quoted string.
* The function name is also used by the function exit macros below.
* Note: (const char) is used to be compatible with the debug interfaces
- * and macros such as __FUNCTION__.
+ * and macros such as __func__.
*/
#define ACPI_FUNCTION_NAME(name) static const char _acpi_function_name[] = #name;
#else
-/* Compiler supports __FUNCTION__ (or equivalent) -- Ignore this macro */
+/* Compiler supports __func__ (or equivalent) -- Ignore this macro */
#define ACPI_FUNCTION_NAME(name)
#endif /* ACPI_GET_FUNCTION_NAME */
diff -puN drivers/acpi/acpica/utdebug.c~kernelh-remove-ancient-__function__-hack-fix drivers/acpi/acpica/utdebug.c
--- a/drivers/acpi/acpica/utdebug.c~kernelh-remove-ancient-__function__-hack-fix
+++ a/drivers/acpi/acpica/utdebug.c
@@ -111,8 +111,8 @@ void acpi_ut_track_stack_ptr(void)
* RETURN: Updated pointer to the function name
*
* DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
- * This allows compiler macros such as __FUNCTION__ to be used
- * with no change to the debug output.
+ * This allows compiler macros such as __func__ to be used with no
+ * change to the debug output.
*
******************************************************************************/
_
--
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