powerpc/mm/radix: mark as __tlbie_pid() and friends as__always_inline

This prepares to move CONFIG_OPTIMIZE_INLINING from x86 to a common
place.  We need to eliminate potential issues beforehand.

If it is enabled for powerpc, the following errors are reported:

  arch/powerpc/mm/tlb-radix.c: In function '__tlbie_lpid':
  arch/powerpc/mm/tlb-radix.c:148:2: warning: asm operand 3 probably doesn't match constraints
    asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
    ^~~
  arch/powerpc/mm/tlb-radix.c:148:2: error: impossible constraint in 'asm'
  arch/powerpc/mm/tlb-radix.c: In function '__tlbie_pid':
  arch/powerpc/mm/tlb-radix.c:118:2: warning: asm operand 3 probably doesn't match constraints
    asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
    ^~~
  arch/powerpc/mm/tlb-radix.c: In function '__tlbiel_pid':
  arch/powerpc/mm/tlb-radix.c:104:2: warning: asm operand 3 probably doesn't match constraints
    asm volatile(PPC_TLBIEL(%0, %4, %3, %2, %1)
    ^~~

Link: http://lkml.kernel.org/r/20190423034959.13525-11-yamada.masahiro@socionext.comSigned-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Malaterre <malat@debian.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/mm/book3s64/radix_tlb.c

@@ -90,7 +90,7 @@ void radix__tlbiel_all(unsigned int action)
 	asm volatile(PPC_INVALIDATE_ERAT "; isync" : : :"memory");
 }
 
-static inline void __tlbiel_pid(unsigned long pid, int set,
+static __always_inline void __tlbiel_pid(unsigned long pid, int set,
 				unsigned long ric)
 {
 	unsigned long rb,rs,prs,r;
@@ -106,7 +106,7 @@ static inline void __tlbiel_pid(unsigned long pid, int set,
 	trace_tlbie(0, 1, rb, rs, ric, prs, r);
 }
 
-static inline void __tlbie_pid(unsigned long pid, unsigned long ric)
+static __always_inline void __tlbie_pid(unsigned long pid, unsigned long ric)
 {
 	unsigned long rb,rs,prs,r;
 
@@ -120,7 +120,7 @@ static inline void __tlbie_pid(unsigned long pid, unsigned long ric)
 	trace_tlbie(0, 0, rb, rs, ric, prs, r);
 }
 
-static inline void __tlbiel_lpid(unsigned long lpid, int set,
+static __always_inline void __tlbiel_lpid(unsigned long lpid, int set,
 				unsigned long ric)
 {
 	unsigned long rb,rs,prs,r;
@@ -136,7 +136,7 @@ static inline void __tlbiel_lpid(unsigned long lpid, int set,
 	trace_tlbie(lpid, 1, rb, rs, ric, prs, r);
 }
 
-static inline void __tlbie_lpid(unsigned long lpid, unsigned long ric)
+static __always_inline void __tlbie_lpid(unsigned long lpid, unsigned long ric)
 {
 	unsigned long rb,rs,prs,r;