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ce7b0e426e
It is sometimes useful to generate a snapshot when perf record exits; I've been using a wrapper script around the workload that would do a killall -USR2 perf when the workload exits. This patch makes it easier and also works when perf record is attached to a pre-existing task. A new snapshot option 'e' can be specified in -S to enable this behavior: root@elsewhere:~# perf record -e intel_pt// -Se sleep 1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.085 MB perf.data ] Co-developed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190806144101.62892-1-alexander.shishkin@linux.intel.com [ Fixed up !HAVE_AUXTRACE_SUPPORT build in builtin-record.c, adding 2 missing __maybe_unused ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_PERF_H
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#define _PERF_PERF_H
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#include <time.h>
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#include <stdbool.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/perf_event.h>
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extern bool test_attr__enabled;
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void test_attr__ready(void);
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void test_attr__init(void);
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void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
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int fd, int group_fd, unsigned long flags);
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#define HAVE_ATTR_TEST
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#include "perf-sys.h"
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static inline unsigned long long rdclock(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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}
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#ifndef MAX_NR_CPUS
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#define MAX_NR_CPUS 2048
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#endif
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extern const char *input_name;
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extern bool perf_host, perf_guest;
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extern const char perf_version_string[];
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void pthread__unblock_sigwinch(void);
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#include "util/target.h"
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struct record_opts {
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struct target target;
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bool group;
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bool inherit_stat;
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bool no_buffering;
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bool no_inherit;
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bool no_inherit_set;
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bool no_samples;
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bool raw_samples;
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bool sample_address;
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bool sample_phys_addr;
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bool sample_weight;
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bool sample_time;
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bool sample_time_set;
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bool sample_cpu;
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bool period;
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bool period_set;
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bool running_time;
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bool full_auxtrace;
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bool auxtrace_snapshot_mode;
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bool auxtrace_snapshot_on_exit;
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bool record_namespaces;
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bool record_switch_events;
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bool all_kernel;
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bool all_user;
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bool kernel_callchains;
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bool user_callchains;
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bool tail_synthesize;
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bool overwrite;
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bool ignore_missing_thread;
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bool strict_freq;
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bool sample_id;
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bool no_bpf_event;
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unsigned int freq;
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unsigned int mmap_pages;
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unsigned int auxtrace_mmap_pages;
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unsigned int user_freq;
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u64 branch_stack;
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u64 sample_intr_regs;
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u64 sample_user_regs;
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u64 default_interval;
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u64 user_interval;
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size_t auxtrace_snapshot_size;
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const char *auxtrace_snapshot_opts;
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bool sample_transaction;
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unsigned initial_delay;
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bool use_clockid;
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clockid_t clockid;
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u64 clockid_res_ns;
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int nr_cblocks;
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int affinity;
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int mmap_flush;
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unsigned int comp_level;
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};
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enum perf_affinity {
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PERF_AFFINITY_SYS = 0,
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PERF_AFFINITY_NODE,
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PERF_AFFINITY_CPU,
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PERF_AFFINITY_MAX
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};
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struct option;
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extern const char * const *record_usage;
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extern struct option *record_options;
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extern int version_verbose;
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int record__parse_freq(const struct option *opt, const char *str, int unset);
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#endif
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