Re: [PATCH v2 2/2] tracing/preemptirq: Optimize preempt_disable/enable() tracepoint overhead

From: kernel test robot
Date: Tue Jul 01 2025 - 08:37:12 EST

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Hi Wander,

kernel test robot noticed the following build errors:

[auto build test ERROR on trace/for-next]
[also build test ERROR on tip/sched/core linus/master v6.16-rc4 next-20250701]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Wander-Lairson-Costa/trace-preemptirq-reduce-overhead-of-irq_enable-disable-tracepoints/20250701-035446
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/20250630195243.701516-3-wander%40redhat.com
patch subject: [PATCH v2 2/2] tracing/preemptirq: Optimize preempt_disable/enable() tracepoint overhead
config: powerpc-randconfig-003-20250701 (https://download.01.org/0day-ci/archive/20250701/202507011942.sCSGnb2M-lkp@xxxxxxxxx/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project e04c938cc08a90ae60440ce22d072ebc69d67ee8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011942.sCSGnb2M-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507011942.sCSGnb2M-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:14:
In file included from include/linux/sem.h:5:
In file included from include/uapi/linux/sem.h:5:
In file included from include/linux/ipc.h:7:
In file included from include/linux/rhashtable-types.h:12:
In file included from include/linux/alloc_tag.h:11:
In file included from include/linux/preempt.h:13:
In file included from include/linux/tracepoint-defs.h:11:
In file included from include/linux/atomic.h:7:
In file included from arch/powerpc/include/asm/atomic.h:11:
In file included from arch/powerpc/include/asm/cmpxchg.h:755:
In file included from include/asm-generic/cmpxchg-local.h:6:
include/linux/irqflags.h:201:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
201 | DECLARE_TRACEPOINT(irq_enable);
| ^
| int
include/linux/irqflags.h:201:20: error: a parameter list without types is only allowed in a function definition
201 | DECLARE_TRACEPOINT(irq_enable);
| ^
include/linux/irqflags.h:202:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
202 | DECLARE_TRACEPOINT(irq_disable);
| ^
| int
include/linux/irqflags.h:202:20: error: a parameter list without types is only allowed in a function definition
202 | DECLARE_TRACEPOINT(irq_disable);
| ^
include/linux/irqflags.h:277:47: error: call to undeclared function 'tracepoint_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
277 | DEFINE_LOCK_GUARD_0(irq, local_irq_disable(), local_irq_enable())
| ^
include/linux/irqflags.h:210:7: note: expanded from macro 'local_irq_enable'
210 | if (__trace_enabled(irq_enable)) \
| ^
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^
include/linux/irqflags.h:277:47: error: use of undeclared identifier 'irq_enable'
277 | DEFINE_LOCK_GUARD_0(irq, local_irq_disable(), local_irq_enable())
| ^~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:210:23: note: expanded from macro 'local_irq_enable'
210 | if (__trace_enabled(irq_enable)) \
| ^~~~~~~~~~
include/linux/irqflags.h:277:26: error: call to undeclared function 'tracepoint_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
277 | DEFINE_LOCK_GUARD_0(irq, local_irq_disable(), local_irq_enable())
| ^
include/linux/irqflags.h:219:7: note: expanded from macro 'local_irq_disable'
219 | if (__trace_enabled(irq_disable) && \
| ^
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^
include/linux/irqflags.h:277:26: error: use of undeclared identifier 'irq_disable'
277 | DEFINE_LOCK_GUARD_0(irq, local_irq_disable(), local_irq_enable())
| ^~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:219:23: note: expanded from macro 'local_irq_disable'
219 | if (__trace_enabled(irq_disable) && \
| ^~~~~~~~~~~
include/linux/irqflags.h:280:7: error: call to undeclared function 'tracepoint_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
280 | local_irq_restore(_T->flags),
| ^
include/linux/irqflags.h:234:7: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^
include/linux/irqflags.h:280:7: error: use of undeclared identifier 'irq_enable'
280 | local_irq_restore(_T->flags),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:234:23: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^~~~~~~~~~
include/linux/irqflags.h:279:7: error: call to undeclared function 'tracepoint_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
279 | local_irq_save(_T->flags),
| ^
include/linux/irqflags.h:227:7: note: expanded from macro 'local_irq_save'
227 | if (__trace_enabled(irq_disable) && \
| ^
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^
include/linux/irqflags.h:279:7: error: use of undeclared identifier 'irq_disable'
279 | local_irq_save(_T->flags),
| ^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:227:23: note: expanded from macro 'local_irq_save'
227 | if (__trace_enabled(irq_disable) && \
| ^~~~~~~~~~~
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
>> include/linux/spinlock_api_smp.h:151:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
151 | local_irq_restore(flags);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:234:7: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:103:1: note: expanded from here
103 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
>> include/linux/spinlock_api_smp.h:151:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
151 | local_irq_restore(flags);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:234:7: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:103:1: note: expanded from here
103 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
>> include/linux/spinlock_api_smp.h:151:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
151 | local_irq_restore(flags);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:234:7: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:103:1: note: expanded from here
103 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
>> include/linux/spinlock_api_smp.h:151:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
151 | local_irq_restore(flags);
| ^~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:234:7: note: expanded from macro 'local_irq_restore'
234 | if (__trace_enabled(irq_enable) && \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:103:1: note: expanded from here
103 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
include/linux/spinlock_api_smp.h:159:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
159 | local_irq_enable();
| ^~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:210:7: note: expanded from macro 'local_irq_enable'
210 | if (__trace_enabled(irq_enable)) \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:108:1: note: expanded from here
108 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
include/linux/spinlock_api_smp.h:159:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
159 | local_irq_enable();
| ^~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:210:7: note: expanded from macro 'local_irq_enable'
210 | if (__trace_enabled(irq_enable)) \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/tracepoint-defs.h:92:27: note: expanded from macro 'tracepoint_enabled'
92 | static_branch_unlikely(&(__tracepoint_##tp).key)
| ^~~~~~~~~~~~~~~~~
<scratch space>:108:1: note: expanded from here
108 | __tracepoint_irq_enable
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/preempt.h:202:1: note: '__tracepoint_preempt_enable' declared here
202 | DECLARE_TRACEPOINT(preempt_enable);
| ^
include/linux/tracepoint-defs.h:88:27: note: expanded from macro 'DECLARE_TRACEPOINT'
88 | extern struct tracepoint __tracepoint_##tp
| ^
<scratch space>:104:1: note: expanded from here
104 | __tracepoint_preempt_enable
| ^
In file included from arch/powerpc/kernel/asm-offsets.c:12:
In file included from include/linux/compat.h:15:
In file included from include/linux/socket.h:8:
In file included from include/linux/uio.h:9:
In file included from include/linux/mm_types.h:8:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:312:
include/linux/spinlock_api_smp.h:159:2: error: use of undeclared identifier '__tracepoint_irq_enable'; did you mean '__tracepoint_preempt_enable'?
159 | local_irq_enable();
| ^~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:210:7: note: expanded from macro 'local_irq_enable'
210 | if (__trace_enabled(irq_enable)) \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/irqflags.h:206:3: note: expanded from macro '__trace_enabled'
206 | tracepoint_enabled(tp))

vim +151 include/linux/spinlock_api_smp.h

69d0ee7377eef80 Heiko Carstens 2009-08-31 145
9c1721aa4994f66 Thomas Gleixner 2009-12-03 146 static inline void __raw_spin_unlock_irqrestore(raw_spinlock_t *lock,
69d0ee7377eef80 Heiko Carstens 2009-08-31 147 unsigned long flags)
69d0ee7377eef80 Heiko Carstens 2009-08-31 148 {
5facae4f3549b5c Qian Cai 2019-09-19 149 spin_release(&lock->dep_map, _RET_IP_);
9828ea9d75c38fe Thomas Gleixner 2009-12-03 150 do_raw_spin_unlock(lock);
69d0ee7377eef80 Heiko Carstens 2009-08-31 @151 local_irq_restore(flags);
69d0ee7377eef80 Heiko Carstens 2009-08-31 152 preempt_enable();
69d0ee7377eef80 Heiko Carstens 2009-08-31 153 }
69d0ee7377eef80 Heiko Carstens 2009-08-31 154

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Next message: Luo Jie: "Re: [PATCH v2 7/8] arm64: dts: qcom: ipq5424: Add NSS clock controller node"
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