From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Since enum trace_iterator_flags is 32bit, the max number of the
option flags is limited to 32 and it is fully used now. To add
a new option, we need to expand it.
Use enum ... : uint64_t {...} syntax which is introduced by
C++11 and GCC/Clang extensions.
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
Changes in v4:
- Use enum ... : type {} instead of const variables.
Changes in v3:
- Make TRACE_ITER_* to global.
---
kernel/trace/trace.c | 17 +++++++++--------
kernel/trace/trace.h | 14 +++++++-------
kernel/trace/trace_irqsoff.c | 2 +-
kernel/trace/trace_sched_wakeup.c | 2 +-
4 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4283ed4e8f59..2b3fe0a30c7d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5144,7 +5144,7 @@ static int tracing_trace_options_show(struct seq_file *m, void *v)
trace_opts = tr->current_trace->flags->opts;
for (i = 0; trace_options[i]; i++) {
- if (tr->trace_flags & (1 << i))
+ if (tr->trace_flags & (1ULL << i))
seq_printf(m, "%s\n", trace_options[i]);
else
seq_printf(m, "no%s\n", trace_options[i]);
@@ -5197,7 +5197,7 @@ static int set_tracer_option(struct trace_array *tr, char *cmp, int neg)
}
/* Some tracers require overwrite to stay enabled */
-int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set)
+int trace_keep_overwrite(struct tracer *tracer, u64 mask, int set)
{
if (tracer->enabled && (mask & TRACE_ITER_OVERWRITE) && !set)
return -1;
@@ -5205,7 +5205,7 @@ int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set)
return 0;
}
-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled)
+int set_tracer_flag(struct trace_array *tr, u64 mask, int enabled)
{
if ((mask == TRACE_ITER_RECORD_TGID) ||
(mask == TRACE_ITER_RECORD_CMD) ||
@@ -5307,7 +5307,7 @@ int trace_set_options(struct trace_array *tr, char *option)
if (ret < 0)
ret = set_tracer_option(tr, cmp, neg);
else
- ret = set_tracer_flag(tr, 1 << ret, !neg);
+ ret = set_tracer_flag(tr, 1ULL << ret, !neg);
mutex_unlock(&trace_types_lock);
mutex_unlock(&event_mutex);
@@ -9119,7 +9119,7 @@ trace_options_core_read(struct file *filp, char __user *ubuf, size_t cnt,
get_tr_index(tr_index, &tr, &index);
- if (tr->trace_flags & (1 << index))
+ if (tr->trace_flags & (1ULL << index))
buf = "1\n";
else
buf = "0\n";
@@ -9148,7 +9148,7 @@ trace_options_core_write(struct file *filp, const char __user *ubuf, size_t cnt,
mutex_lock(&event_mutex);
mutex_lock(&trace_types_lock);
- ret = set_tracer_flag(tr, 1 << index, val);
+ ret = set_tracer_flag(tr, 1ULL << index, val);
mutex_unlock(&trace_types_lock);
mutex_unlock(&event_mutex);
@@ -9312,8 +9312,9 @@ static void create_trace_options_dir(struct trace_array *tr)
for (i = 0; trace_options[i]; i++) {
if (top_level ||
- !((1 << i) & TOP_LEVEL_TRACE_FLAGS))
+ !((1ULL << i) & TOP_LEVEL_TRACE_FLAGS)) {
create_trace_option_core_file(tr, trace_options[i], i);
+ }
}
}
@@ -9997,7 +9998,7 @@ static int __remove_instance(struct trace_array *tr)
/* Disable all the flags that were enabled coming in */
for (i = 0; i < TRACE_FLAGS_MAX_SIZE; i++) {
if ((1 << i) & ZEROED_TRACE_FLAGS)
- set_tracer_flag(tr, 1 << i, 0);
+ set_tracer_flag(tr, 1ULL << i, 0);
}
if (printk_trace == tr)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 1dbf1d3cf2f1..caec534072e7 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -216,7 +216,7 @@ struct array_buffer {
int cpu;
};
-#define TRACE_FLAGS_MAX_SIZE 32
+#define TRACE_FLAGS_MAX_SIZE 64
struct trace_options {
struct tracer *tracer;
@@ -390,7 +390,7 @@ struct trace_array {
int buffer_percent;
unsigned int n_err_log_entries;
struct tracer *current_trace;
- unsigned int trace_flags;
+ u64 trace_flags;
unsigned char trace_flags_index[TRACE_FLAGS_MAX_SIZE];
unsigned int flags;
raw_spinlock_t start_lock;
@@ -631,7 +631,7 @@ struct tracer {
u32 old_flags, u32 bit, int set);
/* Return 0 if OK with change, else return non-zero */
int (*flag_changed)(struct trace_array *tr,
- u32 mask, int set);
+ u64 mask, int set);
struct tracer *next;
struct tracer_flags *flags;
int enabled;
@@ -1385,7 +1385,7 @@ extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
C(MARKERS, "markers"), \
C(EVENT_FORK, "event-fork"), \
C(TRACE_PRINTK, "trace_printk_dest"), \
- C(COPY_MARKER, "copy_trace_marker"),\
+ C(COPY_MARKER, "copy_trace_marker"), \
C(PAUSE_ON_TRACE, "pause-on-trace"), \
C(HASH_PTR, "hash-ptr"), /* Print hashed pointer */ \
FUNCTION_FLAGS \
@@ -1413,7 +1413,7 @@ enum trace_iterator_bits {
#undef C
#define C(a, b) TRACE_ITER_##a = (1 << TRACE_ITER_##a##_BIT)
-enum trace_iterator_flags { TRACE_FLAGS };
+enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
/*
* TRACE_ITER_SYM_MASK masks the options in trace_flags that
@@ -2058,8 +2058,8 @@ extern const char *__stop___tracepoint_str[];
void trace_printk_control(bool enabled);
void trace_printk_start_comm(void);
-int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set);
-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled);
+int trace_keep_overwrite(struct tracer *tracer, u64 mask, int set);
+int set_tracer_flag(struct trace_array *tr, u64 mask, int enabled);
/* Used from boot time tracer */
extern int trace_set_options(struct trace_array *tr, char *option);
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 5496758b6c76..1a65f9f1075c 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -539,7 +539,7 @@ static inline int irqsoff_function_set(struct trace_array *tr, u32 mask, int set
}
#endif /* CONFIG_FUNCTION_TRACER */
-static int irqsoff_flag_changed(struct trace_array *tr, u32 mask, int set)
+static int irqsoff_flag_changed(struct trace_array *tr, u64 mask, int set)
{
struct tracer *tracer = tr->current_trace;
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index bf1cb80742ae..45865b4f753f 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -328,7 +328,7 @@ __trace_function(struct trace_array *tr,
trace_function(tr, ip, parent_ip, trace_ctx, NULL);
}
-static int wakeup_flag_changed(struct trace_array *tr, u32 mask, int set)
+static int wakeup_flag_changed(struct trace_array *tr, u64 mask, int set)
{
struct tracer *tracer = tr->current_trace;Hi Masami,
kernel test robot noticed the following build warnings:
[auto build test WARNING on trace/for-next]
[also build test WARNING on linus/master v6.18-rc1 next-20251017]
[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/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20251018-004104
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/176071774097.175601.10233017390618260565.stgit%40devnote2
patch subject: [PATCH v4 1/2] tracing: Allow tracer to add more than 32 options
config: i386-randconfig-063-20251018 (https://download.01.org/0day-ci/archive/20251019/202510190313.fYtuvG3l-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251019/202510190313.fYtuvG3l-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510190313.fYtuvG3l-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/trace/rv/rv.c: note: in included file (through kernel/trace/rv/rv.h):
>> kernel/trace/rv/../trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/rv/../trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/rv/../trace.h:1427:27: sparse: sparse: got :
vim +1427 kernel/trace/rv/../trace.h
1426
> 1427 enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
1428
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Masami,
kernel test robot noticed the following build warnings:
[auto build test WARNING on trace/for-next]
[also build test WARNING on linus/master v6.18-rc1 next-20251017]
[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/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20251018-004104
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/176071774097.175601.10233017390618260565.stgit%40devnote2
patch subject: [PATCH v4 1/2] tracing: Allow tracer to add more than 32 options
config: arm-randconfig-r112-20251018 (https://download.01.org/0day-ci/archive/20251019/202510190117.rUh1e4k6-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 754ebc6ebb9fb9fbee7aef33478c74ea74949853)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251019/202510190117.rUh1e4k6-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510190117.rUh1e4k6-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/trace/ftrace.c: note: in included file (through kernel/trace/trace_output.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/ftrace.c:1501:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/trace/ftrace.c:1501:9: sparse: struct ftrace_hash [noderef] __rcu *
kernel/trace/ftrace.c:1501:9: sparse: struct ftrace_hash *
kernel/trace/ftrace.c:7839:36: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/trace/ftrace.c:7839:36: sparse: struct ftrace_ops [noderef] __rcu *
kernel/trace/ftrace.c:7839:36: sparse: struct ftrace_ops *
--
kernel/trace/trace_functions.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_printk.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_preemptirq.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_stat.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/pid_list.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_stack.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_output.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace_output.c:423:34: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_ADDR'
kernel/trace/trace_output.c:436:48: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
kernel/trace/trace_output.c:438:25: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_ADDR'
kernel/trace/trace_output.c:572:51: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/trace_output.c:639:31: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace_output.c:650:31: sparse: sparse: undefined identifier 'TRACE_ITER_IRQ_INFO'
kernel/trace/trace_output.c:664:52: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/trace_output.c:1130:22: sparse: sparse: undefined identifier 'TRACE_ITER_PRINT_PARENT'
kernel/trace/trace_output.c:1420:31: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_USEROBJ'
--
kernel/trace/trace_nop.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_irqsoff.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace_irqsoff.c:492:62: sparse: sparse: undefined identifier 'TRACE_ITER_FUNCTION'
kernel/trace/trace_irqsoff.c:521:22: sparse: sparse: undefined identifier 'TRACE_ITER_FUNCTION'
kernel/trace/trace_irqsoff.c:588:29: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace_irqsoff.c:589:29: sparse: sparse: undefined identifier 'TRACE_ITER_LATENCY_FMT'
kernel/trace/trace_irqsoff.c:591:29: sparse: sparse: undefined identifier 'TRACE_ITER_PAUSE_ON_TRACE'
kernel/trace/trace_irqsoff.c:611:37: sparse: sparse: undefined identifier 'TRACE_ITER_LATENCY_FMT'
kernel/trace/trace_irqsoff.c:612:43: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace_irqsoff.c:613:39: sparse: sparse: undefined identifier 'TRACE_ITER_PAUSE_ON_TRACE'
kernel/trace/trace_irqsoff.c:617:29: sparse: sparse: undefined identifier 'TRACE_ITER_LATENCY_FMT'
kernel/trace/trace_irqsoff.c:618:29: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace_irqsoff.c:619:29: sparse: sparse: undefined identifier 'TRACE_ITER_PAUSE_ON_TRACE'
--
kernel/trace/trace_sched_switch.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_branch.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_export.c: note: in included file (through kernel/trace/trace_output.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_dynevent.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/ring_buffer.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_boot.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/blktrace.c: note: in included file (through kernel/trace/trace_output.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/blktrace.c:1455:43: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/blktrace.c:1520:45: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/blktrace.c:1522:44: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
--
kernel/trace/trace_kdb.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace_kdb.c:34:29: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_USEROBJ'
--
kernel/trace/trace_kprobe.c: note: in included file (through kernel/trace/trace_dynevent.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace_kprobe.c:1587:53: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
kernel/trace/trace_kprobe.c:1617:57: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
kernel/trace/trace_kprobe.c:1622:56: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
--
kernel/trace/trace_events_trigger.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_osnoise.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_probe.c: note: in included file (through kernel/trace/trace_probe.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_events_filter.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
--
kernel/trace/trace_events.c: note: in included file (through kernel/trace/trace_output.h):
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace_events.c:848:47: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_CMD'
kernel/trace/trace_events.c:854:47: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
--
kernel/trace/trace.c: note: in included file:
>> kernel/trace/trace.h:1427:27: sparse: sparse: missing identifier in declaration
kernel/trace/trace.h:1427:27: sparse: sparse: Expected ; at the end of type declaration
kernel/trace/trace.h:1427:27: sparse: sparse: got :
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_FUNCTION'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_PRINT_PARENT'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_ANNOTATE'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_CMD'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_IRQ_INFO'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_MARKERS'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_HASH_PTR'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:537:24: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:561:39: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:563:28: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:576:36: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:584:29: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:1142:33: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:1208:33: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:3487:33: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:3524:43: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:3794:50: sparse: sparse: undefined identifier 'TRACE_ITER_HASH_PTR'
kernel/trace/trace.c:4116:29: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace.c:4127:29: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace.c:4146:63: sparse: sparse: undefined identifier 'TRACE_ITER_PRINT_PARENT'
kernel/trace/trace.c:4146:63: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
kernel/trace/trace.c:4146:63: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_ADDR'
kernel/trace/trace.c:4200:33: sparse: sparse: undefined identifier 'TRACE_ITER_ANNOTATE'
kernel/trace/trace.c:4226:54: sparse: sparse: undefined identifier 'TRACE_ITER_PRINT_PARENT'
kernel/trace/trace.c:4226:54: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_OFFSET'
kernel/trace/trace.c:4226:54: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_ADDR'
kernel/trace/trace.c:4236:31: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:4247:39: sparse: sparse: undefined identifier 'TRACE_ITER_FIELDS'
kernel/trace/trace.c:4275:31: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:4301:31: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:4330:31: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:4401:39: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:4406:39: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:4411:39: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:4415:27: sparse: sparse: undefined identifier 'TRACE_ITER_BIN'
kernel/trace/trace.c:4418:27: sparse: sparse: undefined identifier 'TRACE_ITER_HEX'
kernel/trace/trace.c:4421:27: sparse: sparse: undefined identifier 'TRACE_ITER_RAW'
kernel/trace/trace.c:4439:33: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/trace.c:4449:29: sparse: sparse: undefined identifier 'TRACE_ITER_CONTEXT_INFO'
kernel/trace/trace.c:4457:37: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/trace.c:4460:37: sparse: sparse: undefined identifier 'TRACE_ITER_VERBOSE'
kernel/trace/trace.c:4461:43: sparse: sparse: undefined identifier 'TRACE_ITER_IRQ_INFO'
kernel/trace/trace.c:4685:51: sparse: sparse: undefined identifier 'TRACE_ITER_PAUSE_ON_TRACE'
kernel/trace/trace.c:4885:44: sparse: sparse: undefined identifier 'TRACE_ITER_LATENCY_FMT'
kernel/trace/trace.c:5212:40: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace.c:5220:22: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace.c:5235:21: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:5254:21: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:5262:21: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_CMD'
kernel/trace/trace.c:5265:21: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace.c:5268:45: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_TGID'
kernel/trace/trace.c:5275:21: sparse: sparse: undefined identifier 'TRACE_ITER_EVENT_FORK'
kernel/trace/trace.c:5278:21: sparse: sparse: undefined identifier 'TRACE_ITER_FUNC_FORK'
kernel/trace/trace.c:5281:21: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace.c:5288:21: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:6548:31: sparse: sparse: undefined identifier 'TRACE_ITER_LATENCY_FMT'
kernel/trace/trace.c:6609:31: sparse: sparse: undefined identifier 'TRACE_ITER_BLOCK'
kernel/trace/trace.c:7161:31: sparse: sparse: undefined identifier 'TRACE_ITER_STOP_ON_FREE'
kernel/trace/trace.c:7264:33: sparse: sparse: undefined identifier 'TRACE_ITER_MARKERS'
kernel/trace/trace.c:7345:33: sparse: sparse: undefined identifier 'TRACE_ITER_MARKERS'
kernel/trace/trace.c:9332:37: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK'
kernel/trace/trace.c:9332:37: sparse: sparse: undefined identifier 'TRACE_ITER_PRINTK_MSGONLY'
kernel/trace/trace.c:9332:37: sparse: sparse: undefined identifier 'TRACE_ITER_RECORD_CMD'
kernel/trace/trace.c:9655:38: sparse: sparse: undefined identifier 'TRACE_ITER_OVERWRITE'
kernel/trace/trace.c:9848:55: sparse: sparse: undefined identifier 'TRACE_ITER_EVENT_FORK'
kernel/trace/trace.c:9848:55: sparse: sparse: undefined identifier 'TRACE_ITER_FUNC_FORK'
kernel/trace/trace.c:9848:55: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:9848:55: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:10017:32: sparse: sparse: undefined identifier 'TRACE_ITER_EVENT_FORK'
kernel/trace/trace.c:10017:32: sparse: sparse: undefined identifier 'TRACE_ITER_FUNC_FORK'
kernel/trace/trace.c:10017:32: sparse: sparse: undefined identifier 'TRACE_ITER_TRACE_PRINTK'
kernel/trace/trace.c:10017:32: sparse: sparse: undefined identifier 'TRACE_ITER_COPY_MARKER'
kernel/trace/trace.c:10609:41: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_USEROBJ'
kernel/trace/trace.c:10612:29: sparse: sparse: undefined identifier 'TRACE_ITER_SYM_USEROBJ'
kernel/trace/trace.c:454:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/trace/trace.c:454:9: sparse: struct trace_export [noderef] __rcu *
kernel/trace/trace.c:454:9: sparse: struct trace_export *
kernel/trace/trace.c:469:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/trace/trace.c:469:9: sparse: struct trace_export [noderef] __rcu *
kernel/trace/trace.c:469:9: sparse: struct trace_export *
kernel/trace/trace.c:3081:33: sparse: sparse: undefined identifier 'TRACE_ITER_STACKTRACE'
vim +1427 kernel/trace/trace.h
1426
> 1427 enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
1428
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Masami,
kernel test robot noticed the following build errors:
[auto build test ERROR on trace/for-next]
[also build test ERROR on linus/master v6.18-rc1 next-20251017]
[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/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20251018-004104
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/176071774097.175601.10233017390618260565.stgit%40devnote2
patch subject: [PATCH v4 1/2] tracing: Allow tracer to add more than 32 options
config: arc-randconfig-002-20251018 (https://download.01.org/0day-ci/archive/20251018/202510181829.4FNFzdXV-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251018/202510181829.4FNFzdXV-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510181829.4FNFzdXV-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from kernel/trace/trace_events_filter.c:15:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
--
In file included from kernel/trace/trace_output.c:8:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
kernel/trace/trace_output.c: In function 'seq_print_user_ip':
>> kernel/trace/trace_output.c:423:27: error: 'TRACE_ITER_SYM_ADDR' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_ADDR_BIT'?
if (ret && ((sym_flags & TRACE_ITER_SYM_ADDR) || !file))
^~~~~~~~~~~~~~~~~~~
TRACE_ITER_SYM_ADDR_BIT
kernel/trace/trace_output.c:423:27: note: each undeclared identifier is reported only once for each function it appears in
kernel/trace/trace_output.c: In function 'seq_print_ip_sym':
>> kernel/trace/trace_output.c:436:41: error: 'TRACE_ITER_SYM_OFFSET' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_OFFSET_BIT'?
trace_seq_print_sym(s, ip, sym_flags & TRACE_ITER_SYM_OFFSET);
^~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_SYM_OFFSET_BIT
kernel/trace/trace_output.c:438:18: error: 'TRACE_ITER_SYM_ADDR' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_ADDR_BIT'?
if (sym_flags & TRACE_ITER_SYM_ADDR)
^~~~~~~~~~~~~~~~~~~
TRACE_ITER_SYM_ADDR_BIT
kernel/trace/trace_output.c: In function 'lat_print_timestamp':
>> kernel/trace/trace_output.c:572:44: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
unsigned long verbose = tr->trace_flags & TRACE_ITER_VERBOSE;
^~~~~~~~~~~~~~~~~~
TRACE_ITER_VERBOSE_BIT
kernel/trace/trace_output.c: In function 'trace_print_context':
>> kernel/trace/trace_output.c:639:24: error: 'TRACE_ITER_RECORD_TGID' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_TGID_BIT'?
if (tr->trace_flags & TRACE_ITER_RECORD_TGID) {
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_TGID_BIT
>> kernel/trace/trace_output.c:650:24: error: 'TRACE_ITER_IRQ_INFO' undeclared (first use in this function); did you mean 'TRACE_ITER_IRQ_INFO_BIT'?
if (tr->trace_flags & TRACE_ITER_IRQ_INFO)
^~~~~~~~~~~~~~~~~~~
TRACE_ITER_IRQ_INFO_BIT
kernel/trace/trace_output.c: In function 'trace_print_lat_context':
kernel/trace/trace_output.c:664:45: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
unsigned long verbose = (tr->trace_flags & TRACE_ITER_VERBOSE);
^~~~~~~~~~~~~~~~~~
TRACE_ITER_VERBOSE_BIT
kernel/trace/trace_output.c: In function 'print_fn_trace':
>> kernel/trace/trace_output.c:1130:15: error: 'TRACE_ITER_PRINT_PARENT' undeclared (first use in this function); did you mean 'TRACE_ITER_PRINT_PARENT_BIT'?
if ((flags & TRACE_ITER_PRINT_PARENT) && parent_ip) {
^~~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_PRINT_PARENT_BIT
kernel/trace/trace_output.c: In function 'trace_user_stack_print':
>> kernel/trace/trace_output.c:1420:24: error: 'TRACE_ITER_SYM_USEROBJ' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_USEROBJ_BIT'?
if (tr->trace_flags & TRACE_ITER_SYM_USEROBJ) {
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_SYM_USEROBJ_BIT
--
In file included from kernel/trace/trace_output.h:6,
from kernel/trace/trace_syscalls.c:13:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
kernel/trace/trace_syscalls.c: In function 'print_syscall_enter':
>> kernel/trace/trace_syscalls.c:160:31: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
if (tr && tr->trace_flags & TRACE_ITER_VERBOSE)
^~~~~~~~~~~~~~~~~~
TRACE_ITER_VERBOSE_BIT
kernel/trace/trace_syscalls.c:160:31: note: each undeclared identifier is reported only once for each function it appears in
--
In file included from kernel/trace/trace_output.h:6,
from kernel/trace/trace_events.c:31:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
kernel/trace/trace_events.c: In function '__ftrace_event_enable_disable':
>> kernel/trace/trace_events.c:848:26: error: 'TRACE_ITER_RECORD_CMD' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_CMD_BIT'?
if (tr->trace_flags & TRACE_ITER_RECORD_CMD) {
^~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_CMD_BIT
kernel/trace/trace_events.c:848:26: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/trace/trace_events.c:854:26: error: 'TRACE_ITER_RECORD_TGID' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_TGID_BIT'?
if (tr->trace_flags & TRACE_ITER_RECORD_TGID) {
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_TGID_BIT
--
In file included from kernel/trace/trace.c:58:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
>> kernel/trace/trace.c:516:3: error: 'TRACE_ITER_PRINT_PARENT' undeclared here (not in a function); did you mean 'TRACE_ITER_PRINT_PARENT_BIT'?
TRACE_ITER_PRINT_PARENT | TRACE_ITER_PRINTK | \
^~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:516:29: error: 'TRACE_ITER_PRINTK' undeclared here (not in a function); did you mean 'TRACE_ITER_PRINTK_BIT'?
TRACE_ITER_PRINT_PARENT | TRACE_ITER_PRINTK | \
^~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:517:3: error: 'TRACE_ITER_ANNOTATE' undeclared here (not in a function); did you mean 'TRACE_FILE_ANNOTATE'?
TRACE_ITER_ANNOTATE | TRACE_ITER_CONTEXT_INFO | \
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:517:25: error: 'TRACE_ITER_CONTEXT_INFO' undeclared here (not in a function); did you mean 'TRACE_ITER_CONTEXT_INFO_BIT'?
TRACE_ITER_ANNOTATE | TRACE_ITER_CONTEXT_INFO | \
^~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:518:3: error: 'TRACE_ITER_RECORD_CMD' undeclared here (not in a function); did you mean 'TRACE_ITER_RECORD_CMD_BIT'?
TRACE_ITER_RECORD_CMD | TRACE_ITER_OVERWRITE | \
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:518:27: error: 'TRACE_ITER_OVERWRITE' undeclared here (not in a function); did you mean 'TRACE_ITER_OVERWRITE_BIT'?
TRACE_ITER_RECORD_CMD | TRACE_ITER_OVERWRITE | \
^~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:519:3: error: 'TRACE_ITER_IRQ_INFO' undeclared here (not in a function); did you mean 'TRACE_ITER_IRQ_INFO_BIT'?
TRACE_ITER_IRQ_INFO | TRACE_ITER_MARKERS | \
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:519:25: error: 'TRACE_ITER_MARKERS' undeclared here (not in a function); did you mean 'TRACE_ITER_MARKERS_BIT'?
TRACE_ITER_IRQ_INFO | TRACE_ITER_MARKERS | \
^~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:520:3: error: 'TRACE_ITER_HASH_PTR' undeclared here (not in a function); did you mean 'TRACE_ITER_HASH_PTR_BIT'?
TRACE_ITER_HASH_PTR | TRACE_ITER_TRACE_PRINTK | \
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:520:25: error: 'TRACE_ITER_TRACE_PRINTK' undeclared here (not in a function); did you mean 'TRACE_ITER_TRACE_PRINTK_BIT'?
TRACE_ITER_HASH_PTR | TRACE_ITER_TRACE_PRINTK | \
^~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:521:3: error: 'TRACE_ITER_COPY_MARKER' undeclared here (not in a function); did you mean 'TRACE_ITER_COPY_MARKER_BIT'?
TRACE_ITER_COPY_MARKER)
^~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:537:17: note: in expansion of macro 'TRACE_DEFAULT_FLAGS'
.trace_flags = TRACE_DEFAULT_FLAGS,
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c: In function 'ftrace_trace_stack':
>> kernel/trace/trace.c:3081:26: error: 'TRACE_ITER_STACKTRACE' undeclared (first use in this function); did you mean 'TRACE_ITER_STACKTRACE_BIT'?
if (!(tr->trace_flags & TRACE_ITER_STACKTRACE))
^~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_STACKTRACE_BIT
kernel/trace/trace.c:3081:26: note: each undeclared identifier is reported only once for each function it appears in
kernel/trace/trace.c: In function 'print_func_help_header':
>> kernel/trace/trace.c:4116:22: error: 'TRACE_ITER_RECORD_TGID' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_TGID_BIT'?
bool tgid = flags & TRACE_ITER_RECORD_TGID;
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_TGID_BIT
kernel/trace/trace.c: In function 'print_func_help_header_irq':
kernel/trace/trace.c:4127:22: error: 'TRACE_ITER_RECORD_TGID' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_TGID_BIT'?
bool tgid = flags & TRACE_ITER_RECORD_TGID;
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_TGID_BIT
In file included from kernel/trace/trace.c:58:
kernel/trace/trace.c: In function 'print_trace_header':
>> kernel/trace/trace.h:1434:27: error: 'TRACE_ITER_SYM_OFFSET' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_OFFSET_BIT'?
(TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:4146:56: note: in expansion of macro 'TRACE_ITER_SYM_MASK'
unsigned long sym_flags = (global_trace.trace_flags & TRACE_ITER_SYM_MASK);
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.h:1434:49: error: 'TRACE_ITER_SYM_ADDR' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_ADDR_BIT'?
(TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:4146:56: note: in expansion of macro 'TRACE_ITER_SYM_MASK'
unsigned long sym_flags = (global_trace.trace_flags & TRACE_ITER_SYM_MASK);
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c: In function 'print_trace_fmt':
>> kernel/trace/trace.h:1434:27: error: 'TRACE_ITER_SYM_OFFSET' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_OFFSET_BIT'?
(TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:4226:47: note: in expansion of macro 'TRACE_ITER_SYM_MASK'
unsigned long sym_flags = (tr->trace_flags & TRACE_ITER_SYM_MASK);
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.h:1434:49: error: 'TRACE_ITER_SYM_ADDR' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_ADDR_BIT'?
(TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
^~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:4226:47: note: in expansion of macro 'TRACE_ITER_SYM_MASK'
unsigned long sym_flags = (tr->trace_flags & TRACE_ITER_SYM_MASK);
^~~~~~~~~~~~~~~~~~~
>> kernel/trace/trace.c:4247:25: error: 'TRACE_ITER_FIELDS' undeclared (first use in this function); did you mean 'TRACE_ITER_FIELDS_BIT'?
if (tr->trace_flags & TRACE_ITER_FIELDS)
^~~~~~~~~~~~~~~~~
TRACE_ITER_FIELDS_BIT
kernel/trace/trace.c: In function 'print_trace_line':
>> kernel/trace/trace.c:4402:18: error: 'TRACE_ITER_PRINTK_MSGONLY' undeclared (first use in this function); did you mean 'TRACE_ITER_PRINTK_MSGONLY_BIT'?
trace_flags & TRACE_ITER_PRINTK_MSGONLY)
^~~~~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_PRINTK_MSGONLY_BIT
kernel/trace/trace.c:4415:20: error: 'TRACE_ITER_BIN' undeclared (first use in this function); did you mean 'TRACE_ITER_BIN_BIT'?
if (trace_flags & TRACE_ITER_BIN)
^~~~~~~~~~~~~~
TRACE_ITER_BIN_BIT
kernel/trace/trace.c:4418:20: error: 'TRACE_ITER_HEX' undeclared (first use in this function); did you mean 'TRACE_ITER_HEX_BIT'?
if (trace_flags & TRACE_ITER_HEX)
^~~~~~~~~~~~~~
TRACE_ITER_HEX_BIT
kernel/trace/trace.c:4421:20: error: 'TRACE_ITER_RAW' undeclared (first use in this function); did you mean 'TRACE_ITER_RAW_BIT'?
if (trace_flags & TRACE_ITER_RAW)
^~~~~~~~~~~~~~
TRACE_ITER_RAW_BIT
kernel/trace/trace.c: In function 'trace_latency_header':
kernel/trace/trace.c:4439:26: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
if (!(tr->trace_flags & TRACE_ITER_VERBOSE))
^~~~~~~~~~~~~~~~~~
TRACE_ITER_VERBOSE_BIT
kernel/trace/trace.c: In function 'trace_default_header':
kernel/trace/trace.c:4457:23: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
if (!(trace_flags & TRACE_ITER_VERBOSE))
^~~~~~~~~~~~~~~~~~
TRACE_ITER_VERBOSE_BIT
kernel/trace/trace.c: In function '__tracing_open':
kernel/trace/trace.c:4685:44: error: 'TRACE_ITER_PAUSE_ON_TRACE' undeclared (first use in this function); did you mean 'TRACE_ITER_PAUSE_ON_TRACE_BIT'?
if (!iter->snapshot && (tr->trace_flags & TRACE_ITER_PAUSE_ON_TRACE))
^~~~~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_PAUSE_ON_TRACE_BIT
kernel/trace/trace.c: In function 'tracing_open':
kernel/trace/trace.c:4885:30: error: 'TRACE_ITER_LATENCY_FMT' undeclared (first use in this function); did you mean 'TRACE_ITER_LATENCY_FMT_BIT'?
else if (tr->trace_flags & TRACE_ITER_LATENCY_FMT)
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_LATENCY_FMT_BIT
kernel/trace/trace.c: In function 'set_tracer_flag':
kernel/trace/trace.c:5220:15: error: 'TRACE_ITER_RECORD_TGID' undeclared (first use in this function); did you mean 'TRACE_ITER_RECORD_TGID_BIT'?
if ((mask == TRACE_ITER_RECORD_TGID) ||
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_RECORD_TGID_BIT
kernel/trace/trace.c:5275:14: error: 'TRACE_ITER_EVENT_FORK' undeclared (first use in this function); did you mean 'TRACE_ITER_EVENT_FORK_BIT'?
if (mask == TRACE_ITER_EVENT_FORK)
^~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_EVENT_FORK_BIT
kernel/trace/trace.c: In function 'tracing_open_pipe':
kernel/trace/trace.c:6548:24: error: 'TRACE_ITER_LATENCY_FMT' undeclared (first use in this function); did you mean 'TRACE_ITER_LATENCY_FMT_BIT'?
if (tr->trace_flags & TRACE_ITER_LATENCY_FMT)
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_LATENCY_FMT_BIT
kernel/trace/trace.c: In function 'trace_poll':
kernel/trace/trace.c:6609:24: error: 'TRACE_ITER_BLOCK' undeclared (first use in this function); did you mean 'TRACE_ITER_BLOCK_BIT'?
if (tr->trace_flags & TRACE_ITER_BLOCK)
^~~~~~~~~~~~~~~~
TRACE_ITER_BLOCK_BIT
kernel/trace/trace.c: In function 'tracing_free_buffer_release':
kernel/trace/trace.c:7161:24: error: 'TRACE_ITER_STOP_ON_FREE' undeclared (first use in this function); did you mean 'TRACE_ITER_STOP_ON_FREE_BIT'?
if (tr->trace_flags & TRACE_ITER_STOP_ON_FREE)
^~~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_STOP_ON_FREE_BIT
kernel/trace/trace.c: In function 'create_trace_options_dir':
kernel/trace/trace.c:525:9: error: 'TRACE_ITER_PRINTK_MSGONLY' undeclared (first use in this function); did you mean 'TRACE_ITER_PRINTK_MSGONLY_BIT'?
TRACE_ITER_PRINTK_MSGONLY | TRACE_ITER_RECORD_CMD)
^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:9332:23: note: in expansion of macro 'TOP_LEVEL_TRACE_FLAGS'
!((1ULL << i) & TOP_LEVEL_TRACE_FLAGS)) {
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c: In function 'trace_array_create_systems':
kernel/trace/trace.c:529:3: error: 'TRACE_ITER_EVENT_FORK' undeclared (first use in this function); did you mean 'TRACE_ITER_EVENT_FORK_BIT'?
(TRACE_ITER_EVENT_FORK | TRACE_ITER_FUNC_FORK | TRACE_ITER_TRACE_PRINTK | \
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:9848:48: note: in expansion of macro 'ZEROED_TRACE_FLAGS'
tr->trace_flags = global_trace.trace_flags & ~ZEROED_TRACE_FLAGS;
^~~~~~~~~~~~~~~~~~
kernel/trace/trace.c: In function '__remove_instance':
kernel/trace/trace.c:529:3: error: 'TRACE_ITER_EVENT_FORK' undeclared (first use in this function); did you mean 'TRACE_ITER_EVENT_FORK_BIT'?
(TRACE_ITER_EVENT_FORK | TRACE_ITER_FUNC_FORK | TRACE_ITER_TRACE_PRINTK | \
^~~~~~~~~~~~~~~~~~~~~
kernel/trace/trace.c:10017:18: note: in expansion of macro 'ZEROED_TRACE_FLAGS'
if ((1 << i) & ZEROED_TRACE_FLAGS)
^~~~~~~~~~~~~~~~~~
kernel/trace/trace.c: In function 'ftrace_dump_one':
kernel/trace/trace.c:10609:34: error: 'TRACE_ITER_SYM_USEROBJ' undeclared (first use in this function); did you mean 'TRACE_ITER_SYM_USEROBJ_BIT'?
old_userobj = tr->trace_flags & TRACE_ITER_SYM_USEROBJ;
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_SYM_USEROBJ_BIT
kernel/trace/trace.c: In function 'trace_poll':
kernel/trace/trace.c:6617:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
--
In file included from kernel/trace/trace_sched_wakeup.c:20:
>> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
^
kernel/trace/trace_sched_wakeup.c: In function '__wakeup_tracer_init':
>> kernel/trace/trace_sched_wakeup.c:688:22: error: 'TRACE_ITER_OVERWRITE' undeclared (first use in this function); did you mean 'TRACE_ITER_OVERWRITE_BIT'?
set_tracer_flag(tr, TRACE_ITER_OVERWRITE, 1);
^~~~~~~~~~~~~~~~~~~~
TRACE_ITER_OVERWRITE_BIT
kernel/trace/trace_sched_wakeup.c:688:22: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/trace/trace_sched_wakeup.c:689:22: error: 'TRACE_ITER_LATENCY_FMT' undeclared (first use in this function); did you mean 'TRACE_ITER_LATENCY_FMT_BIT'?
set_tracer_flag(tr, TRACE_ITER_LATENCY_FMT, 1);
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_LATENCY_FMT_BIT
kernel/trace/trace_sched_wakeup.c: In function 'wakeup_tracer_reset':
kernel/trace/trace_sched_wakeup.c:732:30: error: 'TRACE_ITER_LATENCY_FMT' undeclared (first use in this function); did you mean 'TRACE_ITER_LATENCY_FMT_BIT'?
int lat_flag = save_flags & TRACE_ITER_LATENCY_FMT;
^~~~~~~~~~~~~~~~~~~~~~
TRACE_ITER_LATENCY_FMT_BIT
kernel/trace/trace_sched_wakeup.c:733:36: error: 'TRACE_ITER_OVERWRITE' undeclared (first use in this function); did you mean 'TRACE_ITER_OVERWRITE_BIT'?
int overwrite_flag = save_flags & TRACE_ITER_OVERWRITE;
^~~~~~~~~~~~~~~~~~~~
TRACE_ITER_OVERWRITE_BIT
..
vim +1427 kernel/trace/trace.h
1426
> 1427 enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
1428
1429 /*
1430 * TRACE_ITER_SYM_MASK masks the options in trace_flags that
1431 * control the output of kernel symbols.
1432 */
1433 #define TRACE_ITER_SYM_MASK \
> 1434 (TRACE_ITER_PRINT_PARENT|TRACE_ITER_SYM_OFFSET|TRACE_ITER_SYM_ADDR)
1435
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Masami,
kernel test robot noticed the following build errors:
[auto build test ERROR on trace/for-next]
[also build test ERROR on linus/master v6.18-rc1 next-20251017]
[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/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20251018-004104
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/176071774097.175601.10233017390618260565.stgit%40devnote2
patch subject: [PATCH v4 1/2] tracing: Allow tracer to add more than 32 options
config: parisc-randconfig-001-20251018 (https://download.01.org/0day-ci/archive/20251018/202510181711.rxbGAQu7-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251018/202510181711.rxbGAQu7-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510181711.rxbGAQu7-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from kernel/trace/trace_probe.h:31,
from kernel/trace/trace_events_synth.c:20:
kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
1427 | enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
| ^
kernel/trace/trace_events_synth.c: In function 'print_synth_event':
>> kernel/trace/trace_events_synth.c:362:31: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
362 | if (tr && tr->trace_flags & TRACE_ITER_VERBOSE)
| ^~~~~~~~~~~~~~~~~~
| TRACE_ITER_VERBOSE_BIT
kernel/trace/trace_events_synth.c:362:31: note: each undeclared identifier is reported only once for each function it appears in
vim +362 kernel/trace/trace_events_synth.c
726721a51838e3 Tom Zanussi 2020-05-28 337
726721a51838e3 Tom Zanussi 2020-05-28 338 static enum print_line_t print_synth_event(struct trace_iterator *iter,
726721a51838e3 Tom Zanussi 2020-05-28 339 int flags,
726721a51838e3 Tom Zanussi 2020-05-28 340 struct trace_event *event)
726721a51838e3 Tom Zanussi 2020-05-28 341 {
726721a51838e3 Tom Zanussi 2020-05-28 342 struct trace_array *tr = iter->tr;
726721a51838e3 Tom Zanussi 2020-05-28 343 struct trace_seq *s = &iter->seq;
726721a51838e3 Tom Zanussi 2020-05-28 344 struct synth_trace_event *entry;
726721a51838e3 Tom Zanussi 2020-05-28 345 struct synth_event *se;
887f92e09ef34a Sven Schnelle 2023-08-16 346 unsigned int i, j, n_u64;
726721a51838e3 Tom Zanussi 2020-05-28 347 char print_fmt[32];
726721a51838e3 Tom Zanussi 2020-05-28 348 const char *fmt;
726721a51838e3 Tom Zanussi 2020-05-28 349
726721a51838e3 Tom Zanussi 2020-05-28 350 entry = (struct synth_trace_event *)iter->ent;
726721a51838e3 Tom Zanussi 2020-05-28 351 se = container_of(event, struct synth_event, call.event);
726721a51838e3 Tom Zanussi 2020-05-28 352
726721a51838e3 Tom Zanussi 2020-05-28 353 trace_seq_printf(s, "%s: ", se->name);
726721a51838e3 Tom Zanussi 2020-05-28 354
726721a51838e3 Tom Zanussi 2020-05-28 355 for (i = 0, n_u64 = 0; i < se->n_fields; i++) {
726721a51838e3 Tom Zanussi 2020-05-28 356 if (trace_seq_has_overflowed(s))
726721a51838e3 Tom Zanussi 2020-05-28 357 goto end;
726721a51838e3 Tom Zanussi 2020-05-28 358
726721a51838e3 Tom Zanussi 2020-05-28 359 fmt = synth_field_fmt(se->fields[i]->type);
726721a51838e3 Tom Zanussi 2020-05-28 360
726721a51838e3 Tom Zanussi 2020-05-28 361 /* parameter types */
726721a51838e3 Tom Zanussi 2020-05-28 @362 if (tr && tr->trace_flags & TRACE_ITER_VERBOSE)
726721a51838e3 Tom Zanussi 2020-05-28 363 trace_seq_printf(s, "%s ", fmt);
726721a51838e3 Tom Zanussi 2020-05-28 364
726721a51838e3 Tom Zanussi 2020-05-28 365 snprintf(print_fmt, sizeof(print_fmt), "%%s=%s%%s", fmt);
726721a51838e3 Tom Zanussi 2020-05-28 366
726721a51838e3 Tom Zanussi 2020-05-28 367 /* parameter values */
726721a51838e3 Tom Zanussi 2020-05-28 368 if (se->fields[i]->is_string) {
bd82631d7ccdc8 Tom Zanussi 2020-10-04 369 if (se->fields[i]->is_dynamic) {
ddeea494a16f32 Sven Schnelle 2023-08-16 370 union trace_synth_field *data = &entry->fields[n_u64];
bd82631d7ccdc8 Tom Zanussi 2020-10-04 371
bd82631d7ccdc8 Tom Zanussi 2020-10-04 372 trace_seq_printf(s, print_fmt, se->fields[i]->name,
ddeea494a16f32 Sven Schnelle 2023-08-16 373 (char *)entry + data->as_dynamic.offset,
bd82631d7ccdc8 Tom Zanussi 2020-10-04 374 i == se->n_fields - 1 ? "" : " ");
bd82631d7ccdc8 Tom Zanussi 2020-10-04 375 n_u64++;
bd82631d7ccdc8 Tom Zanussi 2020-10-04 376 } else {
726721a51838e3 Tom Zanussi 2020-05-28 377 trace_seq_printf(s, print_fmt, se->fields[i]->name,
8db4d6bfbbf920 Steven Rostedt (VMware 2020-10-04 378) STR_VAR_LEN_MAX,
ddeea494a16f32 Sven Schnelle 2023-08-16 379 (char *)&entry->fields[n_u64].as_u64,
726721a51838e3 Tom Zanussi 2020-05-28 380 i == se->n_fields - 1 ? "" : " ");
726721a51838e3 Tom Zanussi 2020-05-28 381 n_u64 += STR_VAR_LEN_MAX / sizeof(u64);
bd82631d7ccdc8 Tom Zanussi 2020-10-04 382 }
00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 383) } else if (se->fields[i]->is_stack) {
ddeea494a16f32 Sven Schnelle 2023-08-16 384 union trace_synth_field *data = &entry->fields[n_u64];
887f92e09ef34a Sven Schnelle 2023-08-16 385 unsigned long *p = (void *)entry + data->as_dynamic.offset;
00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 386)
00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 387) trace_seq_printf(s, "%s=STACK:\n", se->fields[i]->name);
887f92e09ef34a Sven Schnelle 2023-08-16 388 for (j = 1; j < data->as_dynamic.len / sizeof(long); j++)
887f92e09ef34a Sven Schnelle 2023-08-16 389 trace_seq_printf(s, "=> %pS\n", (void *)p[j]);
00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 390) n_u64++;
726721a51838e3 Tom Zanussi 2020-05-28 391 } else {
726721a51838e3 Tom Zanussi 2020-05-28 392 struct trace_print_flags __flags[] = {
726721a51838e3 Tom Zanussi 2020-05-28 393 __def_gfpflag_names, {-1, NULL} };
726721a51838e3 Tom Zanussi 2020-05-28 394 char *space = (i == se->n_fields - 1 ? "" : " ");
726721a51838e3 Tom Zanussi 2020-05-28 395
726721a51838e3 Tom Zanussi 2020-05-28 396 print_synth_event_num_val(s, print_fmt,
726721a51838e3 Tom Zanussi 2020-05-28 397 se->fields[i]->name,
726721a51838e3 Tom Zanussi 2020-05-28 398 se->fields[i]->size,
ddeea494a16f32 Sven Schnelle 2023-08-16 399 &entry->fields[n_u64],
726721a51838e3 Tom Zanussi 2020-05-28 400 space);
726721a51838e3 Tom Zanussi 2020-05-28 401
726721a51838e3 Tom Zanussi 2020-05-28 402 if (strcmp(se->fields[i]->type, "gfp_t") == 0) {
726721a51838e3 Tom Zanussi 2020-05-28 403 trace_seq_puts(s, " (");
726721a51838e3 Tom Zanussi 2020-05-28 404 trace_print_flags_seq(s, "|",
ddeea494a16f32 Sven Schnelle 2023-08-16 405 entry->fields[n_u64].as_u64,
726721a51838e3 Tom Zanussi 2020-05-28 406 __flags);
726721a51838e3 Tom Zanussi 2020-05-28 407 trace_seq_putc(s, ')');
726721a51838e3 Tom Zanussi 2020-05-28 408 }
726721a51838e3 Tom Zanussi 2020-05-28 409 n_u64++;
726721a51838e3 Tom Zanussi 2020-05-28 410 }
726721a51838e3 Tom Zanussi 2020-05-28 411 }
726721a51838e3 Tom Zanussi 2020-05-28 412 end:
726721a51838e3 Tom Zanussi 2020-05-28 413 trace_seq_putc(s, '\n');
726721a51838e3 Tom Zanussi 2020-05-28 414
726721a51838e3 Tom Zanussi 2020-05-28 415 return trace_handle_return(s);
726721a51838e3 Tom Zanussi 2020-05-28 416 }
726721a51838e3 Tom Zanussi 2020-05-28 417
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hmm, so it is clear that we can not use C++11.
So it should use another way to do that.
Thank you,
On Sat, 18 Oct 2025 18:10:01 +0800
kernel test robot <lkp@intel.com> wrote:
> Hi Masami,
>
> kernel test robot noticed the following build errors:
>
> [auto build test ERROR on trace/for-next]
> [also build test ERROR on linus/master v6.18-rc1 next-20251017]
> [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/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20251018-004104
> base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
> patch link: https://lore.kernel.org/r/176071774097.175601.10233017390618260565.stgit%40devnote2
> patch subject: [PATCH v4 1/2] tracing: Allow tracer to add more than 32 options
> config: parisc-randconfig-001-20251018 (https://download.01.org/0day-ci/archive/20251018/202510181711.rxbGAQu7-lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 10.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251018/202510181711.rxbGAQu7-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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202510181711.rxbGAQu7-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> In file included from kernel/trace/trace_probe.h:31,
> from kernel/trace/trace_events_synth.c:20:
> kernel/trace/trace.h:1427:27: error: expected identifier or '(' before ':' token
> 1427 | enum trace_iterator_flags : uint64_t { TRACE_FLAGS };
> | ^
> kernel/trace/trace_events_synth.c: In function 'print_synth_event':
> >> kernel/trace/trace_events_synth.c:362:31: error: 'TRACE_ITER_VERBOSE' undeclared (first use in this function); did you mean 'TRACE_ITER_VERBOSE_BIT'?
> 362 | if (tr && tr->trace_flags & TRACE_ITER_VERBOSE)
> | ^~~~~~~~~~~~~~~~~~
> | TRACE_ITER_VERBOSE_BIT
> kernel/trace/trace_events_synth.c:362:31: note: each undeclared identifier is reported only once for each function it appears in
>
>
> vim +362 kernel/trace/trace_events_synth.c
>
> 726721a51838e3 Tom Zanussi 2020-05-28 337
> 726721a51838e3 Tom Zanussi 2020-05-28 338 static enum print_line_t print_synth_event(struct trace_iterator *iter,
> 726721a51838e3 Tom Zanussi 2020-05-28 339 int flags,
> 726721a51838e3 Tom Zanussi 2020-05-28 340 struct trace_event *event)
> 726721a51838e3 Tom Zanussi 2020-05-28 341 {
> 726721a51838e3 Tom Zanussi 2020-05-28 342 struct trace_array *tr = iter->tr;
> 726721a51838e3 Tom Zanussi 2020-05-28 343 struct trace_seq *s = &iter->seq;
> 726721a51838e3 Tom Zanussi 2020-05-28 344 struct synth_trace_event *entry;
> 726721a51838e3 Tom Zanussi 2020-05-28 345 struct synth_event *se;
> 887f92e09ef34a Sven Schnelle 2023-08-16 346 unsigned int i, j, n_u64;
> 726721a51838e3 Tom Zanussi 2020-05-28 347 char print_fmt[32];
> 726721a51838e3 Tom Zanussi 2020-05-28 348 const char *fmt;
> 726721a51838e3 Tom Zanussi 2020-05-28 349
> 726721a51838e3 Tom Zanussi 2020-05-28 350 entry = (struct synth_trace_event *)iter->ent;
> 726721a51838e3 Tom Zanussi 2020-05-28 351 se = container_of(event, struct synth_event, call.event);
> 726721a51838e3 Tom Zanussi 2020-05-28 352
> 726721a51838e3 Tom Zanussi 2020-05-28 353 trace_seq_printf(s, "%s: ", se->name);
> 726721a51838e3 Tom Zanussi 2020-05-28 354
> 726721a51838e3 Tom Zanussi 2020-05-28 355 for (i = 0, n_u64 = 0; i < se->n_fields; i++) {
> 726721a51838e3 Tom Zanussi 2020-05-28 356 if (trace_seq_has_overflowed(s))
> 726721a51838e3 Tom Zanussi 2020-05-28 357 goto end;
> 726721a51838e3 Tom Zanussi 2020-05-28 358
> 726721a51838e3 Tom Zanussi 2020-05-28 359 fmt = synth_field_fmt(se->fields[i]->type);
> 726721a51838e3 Tom Zanussi 2020-05-28 360
> 726721a51838e3 Tom Zanussi 2020-05-28 361 /* parameter types */
> 726721a51838e3 Tom Zanussi 2020-05-28 @362 if (tr && tr->trace_flags & TRACE_ITER_VERBOSE)
> 726721a51838e3 Tom Zanussi 2020-05-28 363 trace_seq_printf(s, "%s ", fmt);
> 726721a51838e3 Tom Zanussi 2020-05-28 364
> 726721a51838e3 Tom Zanussi 2020-05-28 365 snprintf(print_fmt, sizeof(print_fmt), "%%s=%s%%s", fmt);
> 726721a51838e3 Tom Zanussi 2020-05-28 366
> 726721a51838e3 Tom Zanussi 2020-05-28 367 /* parameter values */
> 726721a51838e3 Tom Zanussi 2020-05-28 368 if (se->fields[i]->is_string) {
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 369 if (se->fields[i]->is_dynamic) {
> ddeea494a16f32 Sven Schnelle 2023-08-16 370 union trace_synth_field *data = &entry->fields[n_u64];
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 371
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 372 trace_seq_printf(s, print_fmt, se->fields[i]->name,
> ddeea494a16f32 Sven Schnelle 2023-08-16 373 (char *)entry + data->as_dynamic.offset,
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 374 i == se->n_fields - 1 ? "" : " ");
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 375 n_u64++;
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 376 } else {
> 726721a51838e3 Tom Zanussi 2020-05-28 377 trace_seq_printf(s, print_fmt, se->fields[i]->name,
> 8db4d6bfbbf920 Steven Rostedt (VMware 2020-10-04 378) STR_VAR_LEN_MAX,
> ddeea494a16f32 Sven Schnelle 2023-08-16 379 (char *)&entry->fields[n_u64].as_u64,
> 726721a51838e3 Tom Zanussi 2020-05-28 380 i == se->n_fields - 1 ? "" : " ");
> 726721a51838e3 Tom Zanussi 2020-05-28 381 n_u64 += STR_VAR_LEN_MAX / sizeof(u64);
> bd82631d7ccdc8 Tom Zanussi 2020-10-04 382 }
> 00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 383) } else if (se->fields[i]->is_stack) {
> ddeea494a16f32 Sven Schnelle 2023-08-16 384 union trace_synth_field *data = &entry->fields[n_u64];
> 887f92e09ef34a Sven Schnelle 2023-08-16 385 unsigned long *p = (void *)entry + data->as_dynamic.offset;
> 00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 386)
> 00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 387) trace_seq_printf(s, "%s=STACK:\n", se->fields[i]->name);
> 887f92e09ef34a Sven Schnelle 2023-08-16 388 for (j = 1; j < data->as_dynamic.len / sizeof(long); j++)
> 887f92e09ef34a Sven Schnelle 2023-08-16 389 trace_seq_printf(s, "=> %pS\n", (void *)p[j]);
> 00cf3d672a9dd4 Steven Rostedt (Google 2023-01-17 390) n_u64++;
> 726721a51838e3 Tom Zanussi 2020-05-28 391 } else {
> 726721a51838e3 Tom Zanussi 2020-05-28 392 struct trace_print_flags __flags[] = {
> 726721a51838e3 Tom Zanussi 2020-05-28 393 __def_gfpflag_names, {-1, NULL} };
> 726721a51838e3 Tom Zanussi 2020-05-28 394 char *space = (i == se->n_fields - 1 ? "" : " ");
> 726721a51838e3 Tom Zanussi 2020-05-28 395
> 726721a51838e3 Tom Zanussi 2020-05-28 396 print_synth_event_num_val(s, print_fmt,
> 726721a51838e3 Tom Zanussi 2020-05-28 397 se->fields[i]->name,
> 726721a51838e3 Tom Zanussi 2020-05-28 398 se->fields[i]->size,
> ddeea494a16f32 Sven Schnelle 2023-08-16 399 &entry->fields[n_u64],
> 726721a51838e3 Tom Zanussi 2020-05-28 400 space);
> 726721a51838e3 Tom Zanussi 2020-05-28 401
> 726721a51838e3 Tom Zanussi 2020-05-28 402 if (strcmp(se->fields[i]->type, "gfp_t") == 0) {
> 726721a51838e3 Tom Zanussi 2020-05-28 403 trace_seq_puts(s, " (");
> 726721a51838e3 Tom Zanussi 2020-05-28 404 trace_print_flags_seq(s, "|",
> ddeea494a16f32 Sven Schnelle 2023-08-16 405 entry->fields[n_u64].as_u64,
> 726721a51838e3 Tom Zanussi 2020-05-28 406 __flags);
> 726721a51838e3 Tom Zanussi 2020-05-28 407 trace_seq_putc(s, ')');
> 726721a51838e3 Tom Zanussi 2020-05-28 408 }
> 726721a51838e3 Tom Zanussi 2020-05-28 409 n_u64++;
> 726721a51838e3 Tom Zanussi 2020-05-28 410 }
> 726721a51838e3 Tom Zanussi 2020-05-28 411 }
> 726721a51838e3 Tom Zanussi 2020-05-28 412 end:
> 726721a51838e3 Tom Zanussi 2020-05-28 413 trace_seq_putc(s, '\n');
> 726721a51838e3 Tom Zanussi 2020-05-28 414
> 726721a51838e3 Tom Zanussi 2020-05-28 415 return trace_handle_return(s);
> 726721a51838e3 Tom Zanussi 2020-05-28 416 }
> 726721a51838e3 Tom Zanussi 2020-05-28 417
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
© 2016 - 2026 Red Hat, Inc.