perf tools: Fix compile error for x86
authorYang Jihong <yangjihong1@huawei.com>
Mon, 22 Aug 2022 09:25:57 +0000 (17:25 +0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 22 Aug 2022 16:44:19 +0000 (09:44 -0700)
commitcfd2b5c1106fa20254d9f24970232cdf24860005
tree6ad2d94b30ba8672448aa5004f425eaad704963d
parent1c23f9e627a7b412978b4e852793c5e3c3efc555
perf tools: Fix compile error for x86

Commit a0a12c3ed057 ("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: a0a12c3ed057 ("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>
tools/include/linux/compiler_types.h