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Message-Id: <20220825205942.1713914-1-mail@conchuod.ie>
Date: Thu, 25 Aug 2022 21:59:43 +0100
From: Conor Dooley <mail@...chuod.ie>
To: arnd@...db.de, linux-arch@...r.kernel.org
Cc: richard.henderson@...aro.org, mattst88@...il.com,
vgupta@...nel.org, linux@...linux.org.uk, catalin.marinas@....com,
will@...nel.org, guoren@...nel.org, bcain@...cinc.com,
chenhuacai@...nel.org, geert@...ux-m68k.org, gerg@...ux-m68k.org,
monstr@...str.eu, tsbogend@...ha.franken.de, dinguyen@...nel.org,
shorne@...il.com, deller@....de, mpe@...erman.id.au,
palmer@...belt.com, hca@...ux.ibm.com, ysato@...rs.sourceforge.jp,
dalias@...c.org, davem@...emloft.net, richard@....at,
x86@...nel.org, jcmvbkbc@...il.com, linux-alpha@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
linux-mips@...r.kernel.org, openrisc@...ts.librecores.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-um@...ts.infradead.org, linux-xtensa@...ux-xtensa.org,
linux-fsdevel@...r.kernel.org,
Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v2] include/linux: declare cpuinfo_op in processor.h
From: Conor Dooley <conor.dooley@...rochip.com>
RISC-V is missing a prototype for cpuinfo_op, triggering complaints
from sparse. Rather than adding yet another `extern const struct
seq_operations cpuinfo_op;` to an arch specific header file, create a
generic variant and include it across the board.
Several archs already have a declaration in asm/processor.h - migrate
these to include linux/processor.h instead. Most archs do not declare
cpuinfo_op so one sparse complaint off their books.
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
Changes since v1:
- Per Geert, use linux/processor.h & include it on all archs &
- Squash to a single patch
I pushed it out for LKP to take a look at, and was all good there.
Only added one person per arch & the mailing lists to stay within a
1024 character CC list. Please scream if I picked the wrong person.
---
arch/alpha/kernel/setup.c | 1 +
arch/arc/kernel/setup.c | 1 +
arch/arm/kernel/setup.c | 1 +
arch/arm64/kernel/cpuinfo.c | 1 +
arch/csky/kernel/cpu-probe.c | 1 +
arch/hexagon/kernel/setup.c | 1 +
arch/ia64/kernel/setup.c | 1 +
arch/loongarch/kernel/proc.c | 1 +
arch/m68k/kernel/setup_mm.c | 1 +
arch/m68k/kernel/setup_no.c | 1 +
arch/microblaze/include/asm/processor.h | 2 --
arch/microblaze/kernel/cpu/mb.c | 1 +
arch/mips/kernel/proc.c | 1 +
arch/nios2/kernel/cpuinfo.c | 1 +
arch/openrisc/kernel/setup.c | 1 +
arch/parisc/kernel/setup.c | 1 +
arch/powerpc/kernel/setup-common.c | 1 +
arch/riscv/kernel/cpu.c | 3 ++-
arch/s390/include/asm/processor.h | 2 +-
arch/s390/kernel/processor.c | 1 +
arch/sh/include/asm/processor.h | 1 -
arch/sh/kernel/cpu/proc.c | 1 +
arch/sparc/include/asm/cpudata.h | 2 --
arch/sparc/kernel/cpu.c | 1 +
arch/um/kernel/um_arch.c | 1 +
arch/x86/include/asm/processor.h | 2 --
arch/x86/kernel/cpu/proc.c | 1 +
arch/xtensa/kernel/setup.c | 1 +
fs/proc/cpuinfo.c | 3 +--
include/linux/processor.h | 2 ++
30 files changed, 28 insertions(+), 11 deletions(-)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index b4fbbba30aa2..d2c2546e9b1a 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -46,6 +46,7 @@
#include <asm/io.h>
#include <linux/log2.h>
#include <linux/export.h>
+#include <linux/processor.h>
static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
static struct notifier_block alpha_panic_block = {
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 41f07b3e594e..b681bdd21a0c 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -17,6 +17,7 @@
#include <linux/of_fdt.h>
#include <linux/of.h>
#include <linux/cache.h>
+#include <linux/processor.h>
#include <uapi/linux/mount.h>
#include <asm/sections.h>
#include <asm/arcregs.h>
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 1e8a50a97edf..83240c3c0463 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -29,6 +29,7 @@
#include <linux/compiler.h>
#include <linux/sort.h>
#include <linux/psci.h>
+#include <linux/processor.h>
#include <asm/unified.h>
#include <asm/cp15.h>
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index d7702f39b4d3..4c1b12918aed 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -20,6 +20,7 @@
#include <linux/personality.h>
#include <linux/preempt.h>
#include <linux/printk.h>
+#include <linux/processor.h>
#include <linux/seq_file.h>
#include <linux/sched.h>
#include <linux/smp.h>
diff --git a/arch/csky/kernel/cpu-probe.c b/arch/csky/kernel/cpu-probe.c
index 5f15ca31d3e8..62580f5d0d74 100644
--- a/arch/csky/kernel/cpu-probe.c
+++ b/arch/csky/kernel/cpu-probe.c
@@ -5,6 +5,7 @@
#include <linux/init.h>
#include <linux/seq_file.h>
#include <linux/memblock.h>
+#include <linux/processor.h>
#include <abi/reg_ops.h>
diff --git a/arch/hexagon/kernel/setup.c b/arch/hexagon/kernel/setup.c
index 1880d9beaf2b..395d2930dbd1 100644
--- a/arch/hexagon/kernel/setup.c
+++ b/arch/hexagon/kernel/setup.c
@@ -13,6 +13,7 @@
#include <linux/seq_file.h>
#include <linux/console.h>
#include <linux/of_fdt.h>
+#include <linux/processor.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <asm/setup.h>
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index fd6301eafa9d..973725c4ce1e 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -52,6 +52,7 @@
#include <linux/cpufreq.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
+#include <linux/processor.h>
#include <asm/mca.h>
#include <asm/meminit.h>
diff --git a/arch/loongarch/kernel/proc.c b/arch/loongarch/kernel/proc.c
index 5c67cc4fd56d..a8cbebe839e2 100644
--- a/arch/loongarch/kernel/proc.c
+++ b/arch/loongarch/kernel/proc.c
@@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
+#include <linux/processor.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index e62fa8f2149b..45d82a4839fc 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -25,6 +25,7 @@
#include <linux/module.h>
#include <linux/nvram.h>
#include <linux/initrd.h>
+#include <linux/processor.h>
#include <asm/bootinfo.h>
#include <asm/byteorder.h>
diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c
index cb6def585851..86dd4b47ff43 100644
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -33,6 +33,7 @@
#include <linux/initrd.h>
#include <linux/root_dev.h>
#include <linux/rtc.h>
+#include <linux/processor.h>
#include <asm/setup.h>
#include <asm/bootinfo.h>
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 7e9e92670df3..c5877c91116a 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -15,8 +15,6 @@
#include <asm/current.h>
# ifndef __ASSEMBLY__
-/* from kernel/cpu/mb.c */
-extern const struct seq_operations cpuinfo_op;
# define cpu_relax() barrier()
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 9581d194d9e4..33f5be916121 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -14,6 +14,7 @@
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <linux/initrd.h>
+#include <linux/processor.h>
#include <linux/bug.h>
#include <asm/cpuinfo.h>
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index 8eba5a1ed664..54a4226cff84 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -8,6 +8,7 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
+#include <linux/processor.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
diff --git a/arch/nios2/kernel/cpuinfo.c b/arch/nios2/kernel/cpuinfo.c
index 203870c4b86d..9641ca55377e 100644
--- a/arch/nios2/kernel/cpuinfo.c
+++ b/arch/nios2/kernel/cpuinfo.c
@@ -12,6 +12,7 @@
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/of.h>
+#include <linux/processor.h>
#include <asm/cpuinfo.h>
struct cpuinfo cpuinfo;
diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
index 0cd04d936a7a..a628c928941b 100644
--- a/arch/openrisc/kernel/setup.c
+++ b/arch/openrisc/kernel/setup.c
@@ -33,6 +33,7 @@
#include <linux/of_fdt.h>
#include <linux/of.h>
#include <linux/device.h>
+#include <linux/processor.h>
#include <asm/sections.h>
#include <asm/types.h>
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f005ddedb50e..d00488507f49 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -25,6 +25,7 @@
#include <linux/sched.h>
#include <linux/sched/clock.h>
#include <linux/start_kernel.h>
+#include <linux/processor.h>
#include <asm/cacheflush.h>
#include <asm/processor.h>
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index dd98f43bd685..12ddcb1401be 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -34,6 +34,7 @@
#include <linux/of_platform.h>
#include <linux/hugetlb.h>
#include <linux/pgtable.h>
+#include <linux/processor.h>
#include <asm/io.h>
#include <asm/paca.h>
#include <asm/processor.h>
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index 0be8a2403212..f28ec528d54a 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -4,8 +4,9 @@
*/
#include <linux/init.h>
-#include <linux/seq_file.h>
#include <linux/of.h>
+#include <linux/processor.h>
+#include <linux/seq_file.h>
#include <asm/hwcap.h>
#include <asm/smp.h>
#include <asm/pgtable.h>
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index bd66f8e34949..55fbb4f7f7f6 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -33,6 +33,7 @@
#include <linux/cpumask.h>
#include <linux/linkage.h>
#include <linux/irqflags.h>
+#include <linux/processor.h>
#include <asm/cpu.h>
#include <asm/page.h>
#include <asm/ptrace.h>
@@ -80,7 +81,6 @@ void s390_adjust_jiffies(void);
void s390_update_cpu_mhz(void);
void cpu_detect_mhz_feature(void);
-extern const struct seq_operations cpuinfo_op;
extern void execve_tail(void);
extern void __bpon(void);
unsigned long vdso_size(void);
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index a194611ba88c..267886605902 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -17,6 +17,7 @@
#include <linux/mm_types.h>
#include <linux/delay.h>
#include <linux/cpu.h>
+#include <linux/processor.h>
#include <asm/diag.h>
#include <asm/facility.h>
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h
index 85a6c1c3c16e..10c4b4b9af46 100644
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -123,7 +123,6 @@ extern unsigned int mem_init_done;
/* arch/sh/kernel/setup.c */
const char *get_cpu_subtype(struct sh_cpuinfo *c);
-extern const struct seq_operations cpuinfo_op;
/* thread_struct flags */
#define SH_THREAD_UAC_NOPRINT (1 << 0)
diff --git a/arch/sh/kernel/cpu/proc.c b/arch/sh/kernel/cpu/proc.c
index a306bcd6b341..f373a21c6705 100644
--- a/arch/sh/kernel/cpu/proc.c
+++ b/arch/sh/kernel/cpu/proc.c
@@ -2,6 +2,7 @@
#include <linux/seq_file.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/processor.h>
#include <asm/machvec.h>
#include <asm/processor.h>
diff --git a/arch/sparc/include/asm/cpudata.h b/arch/sparc/include/asm/cpudata.h
index d213165ee713..f7e690a7860b 100644
--- a/arch/sparc/include/asm/cpudata.h
+++ b/arch/sparc/include/asm/cpudata.h
@@ -7,8 +7,6 @@
#include <linux/threads.h>
#include <linux/percpu.h>
-extern const struct seq_operations cpuinfo_op;
-
#endif /* !(__ASSEMBLY__) */
#if defined(__sparc__) && defined(__arch64__)
diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
index 79cd6ccfeac0..ffdc7a825b80 100644
--- a/arch/sparc/kernel/cpu.c
+++ b/arch/sparc/kernel/cpu.c
@@ -12,6 +12,7 @@
#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/pgtable.h>
+#include <linux/processor.h>
#include <asm/spitfire.h>
#include <asm/oplib.h>
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index e0de60e503b9..4034f5b959f7 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -9,6 +9,7 @@
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/panic_notifier.h>
+#include <linux/processor.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/utsname.h>
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 356308c73951..08ccd453ec4f 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -188,8 +188,6 @@ DECLARE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info);
#define cpu_data(cpu) boot_cpu_data
#endif
-extern const struct seq_operations cpuinfo_op;
-
#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
extern void cpu_detect(struct cpuinfo_x86 *c);
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 099b6f0d96bd..5a0699d9ff7d 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -4,6 +4,7 @@
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/cpufreq.h>
+#include <linux/processor.h>
#include "cpu.h"
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 9191738f9941..d4417a174887 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -25,6 +25,7 @@
#include <linux/cpu.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
+#include <linux/processor.h>
#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
# include <linux/console.h>
diff --git a/fs/proc/cpuinfo.c b/fs/proc/cpuinfo.c
index f38bda5b83ec..ca3065dfecd9 100644
--- a/fs/proc/cpuinfo.c
+++ b/fs/proc/cpuinfo.c
@@ -3,10 +3,9 @@
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
+#include <linux/processor.h>
#include <linux/seq_file.h>
-extern const struct seq_operations cpuinfo_op;
-
static int cpuinfo_open(struct inode *inode, struct file *file)
{
return seq_open(file, &cpuinfo_op);
diff --git a/include/linux/processor.h b/include/linux/processor.h
index dc78bdc7079a..71bdf8626874 100644
--- a/include/linux/processor.h
+++ b/include/linux/processor.h
@@ -59,4 +59,6 @@ do { \
#endif
+extern const struct seq_operations cpuinfo_op;
+
#endif /* _LINUX_PROCESSOR_H */
--
2.37.1
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