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Commit a0a12c3ed0 ("asm goto: eradicate CC_HAS_ASM_GOTO") eradicates
CC_HAS_ASM_GOTO, and in the process also causes the perf tool on x86 to
use asm_volatile_goto when compiling __GEN_RMWcc.
However, asm_volatile_goto is not declared in the perf tool headers,
which causes a compilation error:
In file included from tools/arch/x86/include/asm/atomic.h:7,
from tools/include/asm/atomic.h:6,
from tools/include/linux/atomic.h:5,
from tools/include/linux/refcount.h:41,
from tools/lib/perf/include/internal/cpumap.h:5,
from tools/perf/util/cpumap.h:7,
from tools/perf/util/env.h:7,
from tools/perf/util/header.h:12,
from pmu-events/pmu-events.c:9:
tools/arch/x86/include/asm/atomic.h: In function ‘atomic_dec_and_test’:
tools/arch/x86/include/asm/rmwcc.h:7:2: error: implicit declaration of function ‘asm_volatile_goto’ [-Werror=implicit-function-declaration]
asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \
^~~~~~~~~~~~~~~~~
Define asm_volatile_goto in compiler_types.h if not declared, like the
main kernel header files do.
Fixes: a0a12c3ed0 ("asm goto: eradicate CC_HAS_ASM_GOTO")
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
cfd2b5c110