trace.h (16419098e8b301417173d8d2cbfa94a56ac9900b) trace.h (5790b1fb3d672d9a1fe3881a7181dfdbe741568f)
1// SPDX-License-Identifier: GPL-2.0
2
3#ifndef _LINUX_KERNEL_TRACE_H
4#define _LINUX_KERNEL_TRACE_H
5
6#include <linux/fs.h>
7#include <linux/atomic.h>
8#include <linux/sched.h>

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376 unsigned int trace_flags;
377 unsigned char trace_flags_index[TRACE_FLAGS_MAX_SIZE];
378 unsigned int flags;
379 raw_spinlock_t start_lock;
380 struct list_head err_log;
381 struct dentry *dir;
382 struct dentry *options;
383 struct dentry *percpu_dir;
1// SPDX-License-Identifier: GPL-2.0
2
3#ifndef _LINUX_KERNEL_TRACE_H
4#define _LINUX_KERNEL_TRACE_H
5
6#include <linux/fs.h>
7#include <linux/atomic.h>
8#include <linux/sched.h>

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376 unsigned int trace_flags;
377 unsigned char trace_flags_index[TRACE_FLAGS_MAX_SIZE];
378 unsigned int flags;
379 raw_spinlock_t start_lock;
380 struct list_head err_log;
381 struct dentry *dir;
382 struct dentry *options;
383 struct dentry *percpu_dir;
384 struct dentry *event_dir;
384 struct eventfs_inode *event_dir;
385 struct trace_options *topts;
386 struct list_head systems;
387 struct list_head events;
388 struct trace_event_file *trace_marker_file;
389 cpumask_var_t tracing_cpumask; /* only trace on set CPUs */
390 /* one per_cpu trace_pipe can be opened by only one user */
391 cpumask_var_t pipe_cpumask;
392 int ref;

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405 int function_enabled;
406#endif
407 int no_filter_buffering_ref;
408 struct list_head hist_vars;
409#ifdef CONFIG_TRACER_SNAPSHOT
410 struct cond_snapshot *cond_snapshot;
411#endif
412 struct trace_func_repeats __percpu *last_func_repeats;
385 struct trace_options *topts;
386 struct list_head systems;
387 struct list_head events;
388 struct trace_event_file *trace_marker_file;
389 cpumask_var_t tracing_cpumask; /* only trace on set CPUs */
390 /* one per_cpu trace_pipe can be opened by only one user */
391 cpumask_var_t pipe_cpumask;
392 int ref;

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405 int function_enabled;
406#endif
407 int no_filter_buffering_ref;
408 struct list_head hist_vars;
409#ifdef CONFIG_TRACER_SNAPSHOT
410 struct cond_snapshot *cond_snapshot;
411#endif
412 struct trace_func_repeats __percpu *last_func_repeats;
413 /*
414 * On boot up, the ring buffer is set to the minimum size, so that
415 * we do not waste memory on systems that are not using tracing.
416 */
417 bool ring_buffer_expanded;
413};
414
415enum {
416 TRACE_ARRAY_FL_GLOBAL = (1 << 0)
417};
418
419extern struct list_head ftrace_trace_arrays;
420

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756#else
757static inline void ftrace_init_trace_array(struct trace_array *tr) { }
758#endif
759#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
760extern int DYN_FTRACE_TEST_NAME(void);
761#define DYN_FTRACE_TEST_NAME2 trace_selftest_dynamic_test_func2
762extern int DYN_FTRACE_TEST_NAME2(void);
763
418};
419
420enum {
421 TRACE_ARRAY_FL_GLOBAL = (1 << 0)
422};
423
424extern struct list_head ftrace_trace_arrays;
425

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761#else
762static inline void ftrace_init_trace_array(struct trace_array *tr) { }
763#endif
764#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
765extern int DYN_FTRACE_TEST_NAME(void);
766#define DYN_FTRACE_TEST_NAME2 trace_selftest_dynamic_test_func2
767extern int DYN_FTRACE_TEST_NAME2(void);
768
764extern bool ring_buffer_expanded;
769extern void trace_set_ring_buffer_expanded(struct trace_array *tr);
765extern bool tracing_selftest_disabled;
766
767#ifdef CONFIG_FTRACE_STARTUP_TEST
768extern void __init disable_tracing_selftest(const char *reason);
769
770extern int trace_selftest_startup_function(struct tracer *trace,
771 struct trace_array *tr);
772extern int trace_selftest_startup_function_graph(struct tracer *trace,

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1300 return 0;
1301}
1302static inline void trace_branch_disable(void)
1303{
1304}
1305#endif /* CONFIG_BRANCH_TRACER */
1306
1307/* set ring buffers to default size if not already done so */
770extern bool tracing_selftest_disabled;
771
772#ifdef CONFIG_FTRACE_STARTUP_TEST
773extern void __init disable_tracing_selftest(const char *reason);
774
775extern int trace_selftest_startup_function(struct tracer *trace,
776 struct trace_array *tr);
777extern int trace_selftest_startup_function_graph(struct tracer *trace,

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1305 return 0;
1306}
1307static inline void trace_branch_disable(void)
1308{
1309}
1310#endif /* CONFIG_BRANCH_TRACER */
1311
1312/* set ring buffers to default size if not already done so */
1308int tracing_update_buffers(void);
1313int tracing_update_buffers(struct trace_array *tr);
1309
1310union trace_synth_field {
1311 u8 as_u8;
1312 u16 as_u16;
1313 u32 as_u32;
1314 u64 as_u64;
1315 struct trace_dynamic_info as_dynamic;
1316};

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1339 struct event_filter *filter;
1340 int ref_count;
1341};
1342
1343struct trace_subsystem_dir {
1344 struct list_head list;
1345 struct event_subsystem *subsystem;
1346 struct trace_array *tr;
1314
1315union trace_synth_field {
1316 u8 as_u8;
1317 u16 as_u16;
1318 u32 as_u32;
1319 u64 as_u64;
1320 struct trace_dynamic_info as_dynamic;
1321};

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1344 struct event_filter *filter;
1345 int ref_count;
1346};
1347
1348struct trace_subsystem_dir {
1349 struct list_head list;
1350 struct event_subsystem *subsystem;
1351 struct trace_array *tr;
1347 struct eventfs_file *ef;
1352 struct eventfs_inode *ei;
1348 int ref_count;
1349 int nr_events;
1350};
1351
1352extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
1353 struct trace_buffer *buffer,
1354 struct ring_buffer_event *event);
1355

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1354 int nr_events;
1355};
1356
1357extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
1358 struct trace_buffer *buffer,
1359 struct ring_buffer_event *event);
1360

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