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/* SPDX-License-Identifier: GPL-2.0 */
# ifndef _PERF_RECORD_H
# define _PERF_RECORD_H
# include <time.h>
# include <stdbool.h>
# include <linux/types.h>
# include <linux/stddef.h>
# include <linux/perf_event.h>
# include "util/target.h"
struct option ;
struct record_opts {
struct target target ;
bool group ;
bool inherit_stat ;
bool no_buffering ;
bool no_inherit ;
bool no_inherit_set ;
bool no_samples ;
bool raw_samples ;
bool sample_address ;
bool sample_phys_addr ;
bool sample_weight ;
bool sample_time ;
bool sample_time_set ;
bool sample_cpu ;
bool period ;
bool period_set ;
bool running_time ;
bool full_auxtrace ;
bool auxtrace_snapshot_mode ;
bool auxtrace_snapshot_on_exit ;
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bool auxtrace_sample_mode ;
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bool record_namespaces ;
bool record_switch_events ;
bool all_kernel ;
bool all_user ;
bool kernel_callchains ;
bool user_callchains ;
bool tail_synthesize ;
bool overwrite ;
bool ignore_missing_thread ;
bool strict_freq ;
bool sample_id ;
bool no_bpf_event ;
perf record: Put a copy of kcore into the perf.data directory
Add a new 'perf record' option '--kcore' which will put a copy of
/proc/kcore, kallsyms and modules into a perf.data directory. Note, that
without the --kcore option, output goes to a file as previously. The
tools' -o and -i options work with either a file name or directory name.
Example:
$ sudo perf record --kcore uname
$ sudo tree perf.data
perf.data
├── kcore_dir
│ ├── kallsyms
│ ├── kcore
│ └── modules
└── data
$ sudo perf script -v
build id event received for vmlinux: 1eaa285996affce2d74d8e66dcea09a80c9941de
build id event received for [vdso]: 8bbaf5dc62a9b644b4d4e4539737e104e4a84541
Samples for 'cycles' event do not have CPU attribute set. Skipping 'cpu' field.
Using CPUID GenuineIntel-6-8E-A
Using perf.data/kcore_dir/kcore for kernel data
Using perf.data/kcore_dir/kallsyms for symbols
perf 19058 506778.423729: 1 cycles: ffffffffa2caa548 native_write_msr+0x8 (vmlinux)
perf 19058 506778.423733: 1 cycles: ffffffffa2caa548 native_write_msr+0x8 (vmlinux)
perf 19058 506778.423734: 7 cycles: ffffffffa2caa548 native_write_msr+0x8 (vmlinux)
perf 19058 506778.423736: 117 cycles: ffffffffa2caa54a native_write_msr+0xa (vmlinux)
perf 19058 506778.423738: 2092 cycles: ffffffffa2c9b7b0 native_apic_msr_write+0x0 (vmlinux)
perf 19058 506778.423740: 37380 cycles: ffffffffa2f121d0 perf_event_addr_filters_exec+0x0 (vmlinux)
uname 19058 506778.423751: 582673 cycles: ffffffffa303a407 propagate_protected_usage+0x147 (vmlinux)
uname 19058 506778.423892: 2241841 cycles: ffffffffa2cae0c9 unwind_next_frame.part.5+0x79 (vmlinux)
uname 19058 506778.424430: 2457397 cycles: ffffffffa3019232 check_memory_region+0x52 (vmlinux)
Committer testing:
# rm -rf perf.data*
# perf record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.024 MB perf.data (7 samples) ]
# ls -l perf.data
-rw-------. 1 root root 34772 Oct 21 11:08 perf.data
# perf record --kcore uname
Linux
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.024 MB perf.data (7 samples) ]
ls[root@quaco ~]# ls -lad perf.data*
drwx------. 3 root root 4096 Oct 21 11:08 perf.data
-rw-------. 1 root root 34772 Oct 21 11:08 perf.data.old
# perf evlist -v
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
# perf evlist -v -i perf.data/data
cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
#
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lore.kernel.org/lkml/20191004083121.12182-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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bool kcore ;
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unsigned int freq ;
unsigned int mmap_pages ;
unsigned int auxtrace_mmap_pages ;
unsigned int user_freq ;
u64 branch_stack ;
u64 sample_intr_regs ;
u64 sample_user_regs ;
u64 default_interval ;
u64 user_interval ;
size_t auxtrace_snapshot_size ;
const char * auxtrace_snapshot_opts ;
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const char * auxtrace_sample_opts ;
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bool sample_transaction ;
unsigned initial_delay ;
bool use_clockid ;
clockid_t clockid ;
u64 clockid_res_ns ;
int nr_cblocks ;
int affinity ;
int mmap_flush ;
unsigned int comp_level ;
} ;
extern const char * const * record_usage ;
extern struct option * record_options ;
int record__parse_freq ( const struct option * opt , const char * str , int unset ) ;
# endif // _PERF_RECORD_H
