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Message-ID: <202505242035.SN55pavs-lkp@intel.com>
Date: Sat, 24 May 2025 20:52:48 +0800
From: kernel test robot <lkp@...el.com>
To: Ingo Molnar <mingo@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
x86@...nel.org
Subject: [tip:master 747/770] arch/powerpc/include/asm/perf_event.h:47:0:
warning: "PERF_REG_EXTENDED_MASK" redefined
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master
head: 4df0681d0b0244368a8a0982b24ceb536c3b5165
commit: a7872f778554c4849d59def8dfe0d295328e5e10 [747/770] perf/headers: Clean up <linux/perf_event.h> a bit
config: powerpc-randconfig-002-20250524 (https://download.01.org/0day-ci/archive/20250524/202505242035.SN55pavs-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250524/202505242035.SN55pavs-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505242035.SN55pavs-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/perf_event.h:33:0,
from kernel/events/ring_buffer.c:11:
include/linux/perf_regs.h:16:32: error: expected identifier or '(' before numeric constant
#define PERF_REG_EXTENDED_MASK 0
^
arch/powerpc/include/asm/perf_event.h:46:12: note: in expansion of macro 'PERF_REG_EXTENDED_MASK'
extern u64 PERF_REG_EXTENDED_MASK;
^~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/perf_event.h:50:0,
from kernel/events/ring_buffer.c:11:
>> arch/powerpc/include/asm/perf_event.h:47:0: warning: "PERF_REG_EXTENDED_MASK" redefined
#define PERF_REG_EXTENDED_MASK PERF_REG_EXTENDED_MASK
In file included from include/linux/perf_event.h:33:0,
from kernel/events/ring_buffer.c:11:
include/linux/perf_regs.h:16:0: note: this is the location of the previous definition
#define PERF_REG_EXTENDED_MASK 0
cc1: warning: unrecognized command line option '-Wno-unterminated-string-initialization'
--
In file included from include/linux/perf_event.h:33:0,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:94,
from kernel/events/core.c:34:
include/linux/perf_regs.h:16:32: error: expected identifier or '(' before numeric constant
#define PERF_REG_EXTENDED_MASK 0
^
arch/powerpc/include/asm/perf_event.h:46:12: note: in expansion of macro 'PERF_REG_EXTENDED_MASK'
extern u64 PERF_REG_EXTENDED_MASK;
^~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/perf_event.h:50:0,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:94,
from kernel/events/core.c:34:
>> arch/powerpc/include/asm/perf_event.h:47:0: warning: "PERF_REG_EXTENDED_MASK" redefined
#define PERF_REG_EXTENDED_MASK PERF_REG_EXTENDED_MASK
In file included from include/linux/perf_event.h:33:0,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:94,
from kernel/events/core.c:34:
include/linux/perf_regs.h:16:0: note: this is the location of the previous definition
#define PERF_REG_EXTENDED_MASK 0
In file included from include/linux/perf_event.h:50:0,
from include/linux/trace_events.h:10,
from include/trace/syscall.h:7,
from include/linux/syscalls.h:94,
from kernel/events/core.c:34:
kernel/events/core.c: In function 'has_extended_regs':
arch/powerpc/include/asm/perf_event.h:47:32: error: 'PERF_REG_EXTENDED_MASK' undeclared (first use in this function); did you mean 'PERF_REG_EXTENDED_MAX'?
#define PERF_REG_EXTENDED_MASK PERF_REG_EXTENDED_MASK
^
kernel/events/core.c:12500:41: note: in expansion of macro 'PERF_REG_EXTENDED_MASK'
return (event->attr.sample_regs_user & PERF_REG_EXTENDED_MASK) ||
^~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/perf_event.h:47:32: note: each undeclared identifier is reported only once for each function it appears in
#define PERF_REG_EXTENDED_MASK PERF_REG_EXTENDED_MASK
^
kernel/events/core.c:12500:41: note: in expansion of macro 'PERF_REG_EXTENDED_MASK'
return (event->attr.sample_regs_user & PERF_REG_EXTENDED_MASK) ||
^~~~~~~~~~~~~~~~~~~~~~
kernel/events/core.c:12502:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
kernel/events/core.c: At top level:
cc1: warning: unrecognized command line option '-Wno-unterminated-string-initialization'
vim +/PERF_REG_EXTENDED_MASK +47 arch/powerpc/include/asm/perf_event.h
a6460b03f945ee Sandipan Das 2018-12-06 29
75382aa72f0682 Anton Blanchard 2012-06-26 30 /*
75382aa72f0682 Anton Blanchard 2012-06-26 31 * Overload regs->result to specify whether we should use the MSR (result
75382aa72f0682 Anton Blanchard 2012-06-26 32 * is zero) or the SIAR (result is non zero).
75382aa72f0682 Anton Blanchard 2012-06-26 33 */
b0f82b81fe6bbc Frederic Weisbecker 2010-05-20 34 #define perf_arch_fetch_caller_regs(regs, __ip) \
b0f82b81fe6bbc Frederic Weisbecker 2010-05-20 35 do { \
75382aa72f0682 Anton Blanchard 2012-06-26 36 (regs)->result = 0; \
b0f82b81fe6bbc Frederic Weisbecker 2010-05-20 37 (regs)->nip = __ip; \
3d13e839e801e0 Michael Ellerman 2020-02-20 38 (regs)->gpr[1] = current_stack_frame(); \
b0f82b81fe6bbc Frederic Weisbecker 2010-05-20 39 asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
b0f82b81fe6bbc Frederic Weisbecker 2010-05-20 40 } while (0)
333804dc3b7a92 Madhavan Srinivasan 2018-12-09 41
333804dc3b7a92 Madhavan Srinivasan 2018-12-09 42 /* To support perf_regs sier update */
333804dc3b7a92 Madhavan Srinivasan 2018-12-09 43 extern bool is_sier_available(void);
e79b76e03b712e Athira Rajeev 2021-02-03 44 extern unsigned long get_pmcs_ext_regs(int idx);
781fa4811d9531 Anju T Sudhakar 2020-08-07 45 /* To define perf extended regs mask value */
781fa4811d9531 Anju T Sudhakar 2020-08-07 46 extern u64 PERF_REG_EXTENDED_MASK;
781fa4811d9531 Anju T Sudhakar 2020-08-07 @47 #define PERF_REG_EXTENDED_MASK PERF_REG_EXTENDED_MASK
:::::: The code at line 47 was first introduced by commit
:::::: 781fa4811d95314c1965c0c3337c9ac36ef26093 powerpc/perf: Add support for outputting extended regs in perf intr_regs
:::::: TO: Anju T Sudhakar <anju@...ux.vnet.ibm.com>
:::::: CC: Michael Ellerman <mpe@...erman.id.au>
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https://github.com/intel/lkp-tests/wiki
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