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perf kwork: Implement perf kwork timehist
Implements framework of perf kwork timehist,
to provide an analysis of kernel work events.
Test cases:
# perf kwork tim
Runtime start Runtime end Cpu Kwork name Runtime Delaytime
(TYPE)NAME:NUM (msec) (msec)
----------------- ----------------- ------ ------------------------------ ---------- ----------
91576.060290 91576.060344 [0000] (s)RCU:9 0.055 0.111
91576.061470 91576.061547 [0000] (s)SCHED:7 0.077 0.073
91576.062604 91576.062697 [0001] (s)RCU:9 0.094 0.409
91576.064443 91576.064517 [0002] (s)RCU:9 0.074 0.114
91576.065144 91576.065211 [0000] (s)SCHED:7 0.067 0.058
91576.066564 91576.066609 [0003] (s)RCU:9 0.045 0.110
91576.068495 91576.068559 [0000] (s)SCHED:7 0.064 0.059
91576.068900 91576.068996 [0004] (s)RCU:9 0.096 0.726
91576.069364 91576.069420 [0002] (s)RCU:9 0.056 0.082
91576.069649 91576.069701 [0004] (s)RCU:9 0.052 0.111
91576.070147 91576.070206 [0000] (s)SCHED:7 0.060 0.057
91576.073147 91576.073202 [0000] (s)SCHED:7 0.054 0.060
<SNIP>
# perf kwork tim --max-stack 2 -g
Runtime start Runtime end Cpu Kwork name Runtime Delaytime
(TYPE)NAME:NUM (msec) (msec)
----------------- ----------------- ------ ------------------------------ ---------- ----------
91576.060290 91576.060344 [0000] (s)RCU:9 0.055 0.111 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.061470 91576.061547 [0000] (s)SCHED:7 0.077 0.073 irq_exit_rcu <- sysvec_call_function_single
91576.062604 91576.062697 [0001] (s)RCU:9 0.094 0.409 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.064443 91576.064517 [0002] (s)RCU:9 0.074 0.114 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.065144 91576.065211 [0000] (s)SCHED:7 0.067 0.058 irq_exit_rcu <- sysvec_call_function_single
91576.066564 91576.066609 [0003] (s)RCU:9 0.045 0.110 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.068495 91576.068559 [0000] (s)SCHED:7 0.064 0.059 irq_exit_rcu <- sysvec_call_function_single
91576.068900 91576.068996 [0004] (s)RCU:9 0.096 0.726 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.069364 91576.069420 [0002] (s)RCU:9 0.056 0.082 irq_exit_rcu <- sysvec_apic_timer_interrupt
91576.069649 91576.069701 [0004] (s)RCU:9 0.052 0.111 irq_exit_rcu <- sysvec_apic_timer_interrupt
<SNIP>
Committer testing:
# perf kwork -k workqueue timehist | head -40
Runtime start Runtime end Cpu Kwork name Runtime Delaytime
(TYPE)NAME:NUM (msec) (msec)
----------------- ----------------- ------ ------------------------------ ---------- ----------
26520.211825 26520.211832 [0019] (w)free_work 0.007 0.004
26520.212929 26520.212934 [0020] (w)free_work 0.005 0.004
26520.213226 26520.213228 [0014] (w)kfree_rcu_work 0.002 0.004
26520.214057 26520.214061 [0021] (w)free_work 0.004 0.004
26520.221239 26520.221241 [0007] (w)kfree_rcu_work 0.002 0.009
26520.223232 26520.223238 [0013] (w)psi_avgs_work 0.005 0.006
26520.230057 26520.230060 [0020] (w)free_work 0.003 0.003
26520.270428 26520.270434 [0015] (w)free_work 0.006 0.004
26520.270546 26520.270550 [0014] (w)free_work 0.004 0.003
26520.281626 26520.281629 [0015] (w)free_work 0.003 0.002
26520.287225 26520.287230 [0012] (w)psi_avgs_work 0.005 0.008
26520.287231 26520.287235 [0001] (w)psi_avgs_work 0.004 0.011
26520.287236 26520.287239 [0001] (w)psi_avgs_work 0.003 0.012
26520.329488 26520.329492 [0024] (w)free_work 0.004 0.004
26520.330600 26520.330605 [0007] (w)free_work 0.005 0.004
26520.334218 26520.334218 [0007] (w)kfree_rcu_monitor 0.001 0.002
26520.335220 26520.335221 [0005] (w)kfree_rcu_monitor 0.001 0.004
26520.343980 26520.343985 [0007] (w)free_work 0.005 0.002
26520.345093 26520.345097 [0006] (w)free_work 0.004 0.003
26520.351233 26520.351238 [0027] (w)psi_avgs_work 0.005 0.008
26520.353228 26520.353229 [0007] (w)kfree_rcu_work 0.001 0.002
26520.353229 26520.353231 [0005] (w)kfree_rcu_work 0.001 0.006
26520.382381 26520.382383 [0006] (w)free_work 0.003 0.002
26520.386547 26520.386548 [0006] (w)free_work 0.002 0.001
26520.391243 26520.391245 [0015] (w)console_callback 0.002 0.016
26520.415369 26520.415621 [0027] (w)btrfs_work_helper 0.252
26520.415351 26520.416174 [0002] (w)btrfs_work_helper 0.823 0.037
26520.415343 26520.416304 [0031] (w)btrfs_work_helper 0.961
26520.415335 26520.417078 [0001] (w)btrfs_work_helper 1.743
26520.415250 26520.417564 [0002] (w)wb_workfn 2.314
26520.424777 26520.424787 [0002] (w)btrfs_work_helper 0.010
26520.424788 26520.424798 [0002] (w)btrfs_work_helper 0.010
26520.424790 26520.424805 [0001] (w)btrfs_work_helper 0.016 0.016
26520.424801 26520.424807 [0002] (w)btrfs_work_helper 0.006
26520.424809 26520.424831 [0002] (w)btrfs_work_helper 0.022 0.030
26520.424824 26520.424835 [0027] (w)btrfs_work_helper 0.011
26520.424809 26520.424867 [0001] (w)btrfs_work_helper 0.059 0.032
#
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220709015033.38326-14-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Yang Jihong
Arnaldo Carvalho de Melo
parent
53e49e32ae
commit
bcc8b3e88d
@ -21,10 +21,36 @@ There are several variants of 'perf kwork':
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'perf kwork latency' to report the per kwork latencies.
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'perf kwork timehist' provides an analysis of kernel work events.
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Example usage:
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perf kwork record -- sleep 1
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perf kwork report
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perf kwork latency
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perf kwork timehist
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By default it shows the individual work events such as irq, workqeueu,
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including the run time and delay (time between raise and actually entry):
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Runtime start Runtime end Cpu Kwork name Runtime Delaytime
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(TYPE)NAME:NUM (msec) (msec)
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----------------- ----------------- ------ ------------------------- ---------- ----------
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1811186.976062 1811186.976327 [0000] (s)RCU:9 0.266 0.114
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1811186.978452 1811186.978547 [0000] (s)SCHED:7 0.095 0.171
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1811186.980327 1811186.980490 [0000] (s)SCHED:7 0.162 0.083
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1811186.981221 1811186.981271 [0000] (s)SCHED:7 0.050 0.077
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1811186.984267 1811186.984318 [0000] (s)SCHED:7 0.051 0.075
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1811186.987252 1811186.987315 [0000] (s)SCHED:7 0.063 0.081
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1811186.987785 1811186.987843 [0006] (s)RCU:9 0.058 0.645
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1811186.988319 1811186.988383 [0000] (s)SCHED:7 0.064 0.143
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1811186.989404 1811186.989607 [0002] (s)TIMER:1 0.203 0.111
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1811186.989660 1811186.989732 [0002] (s)SCHED:7 0.072 0.310
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1811186.991295 1811186.991407 [0002] eth0:10 0.112
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1811186.991639 1811186.991734 [0002] (s)NET_RX:3 0.095 0.277
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1811186.989860 1811186.991826 [0002] (w)vmstat_shepherd 1.966 0.345
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...
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Times are in msec.usec.
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OPTIONS
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-------
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@ -100,6 +126,45 @@ OPTIONS for 'perf kwork latency'
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stop time is not given (i.e, time string is 'x.y,') then analysis goes
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to end of file.
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OPTIONS for 'perf kwork timehist'
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---------------------------------
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-C::
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--cpu::
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Only show events for the given CPU(s) (comma separated list).
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-g::
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--call-graph::
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Display call chains if present (default off).
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-i::
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--input::
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Input file name. (default: perf.data unless stdin is a fifo)
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-k::
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--vmlinux=<file>::
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Vmlinux pathname
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-n::
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--name::
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Only show events for the given name.
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--kallsyms=<file>::
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Kallsyms pathname
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--max-stack::
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Maximum number of functions to display in backtrace, default 5.
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--symfs=<directory>::
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Look for files with symbols relative to this directory.
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--time::
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Only analyze samples within given time window: <start>,<stop>. Times
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have the format seconds.microseconds. If start is not given (i.e., time
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string is ',x.y') then analysis starts at the beginning of the file. If
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stop time is not given (i.e, time string is 'x.y,') then analysis goes
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to end of file.
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SEE ALSO
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--------
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linkperf:perf-record[1]
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@ -35,10 +35,12 @@
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#define PRINT_TIMESTAMP_WIDTH 17
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#define PRINT_KWORK_NAME_WIDTH 30
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#define RPINT_DECIMAL_WIDTH 3
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#define PRINT_BRACKETPAIR_WIDTH 2
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#define PRINT_TIME_UNIT_SEC_WIDTH 2
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#define PRINT_TIME_UNIT_MESC_WIDTH 3
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#define PRINT_RUNTIME_HEADER_WIDTH (PRINT_RUNTIME_WIDTH + PRINT_TIME_UNIT_MESC_WIDTH)
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#define PRINT_LATENCY_HEADER_WIDTH (PRINT_LATENCY_WIDTH + PRINT_TIME_UNIT_MESC_WIDTH)
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#define PRINT_TIMEHIST_CPU_WIDTH (PRINT_CPU_WIDTH + PRINT_BRACKETPAIR_WIDTH)
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#define PRINT_TIMESTAMP_HEADER_WIDTH (PRINT_TIMESTAMP_WIDTH + PRINT_TIME_UNIT_SEC_WIDTH)
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struct sort_dimension {
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@ -574,6 +576,185 @@ static int latency_entry_event(struct perf_kwork *kwork,
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return 0;
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}
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static void timehist_save_callchain(struct perf_kwork *kwork,
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struct perf_sample *sample,
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struct evsel *evsel,
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struct machine *machine)
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{
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struct symbol *sym;
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struct thread *thread;
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struct callchain_cursor_node *node;
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struct callchain_cursor *cursor = &callchain_cursor;
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if (!kwork->show_callchain || sample->callchain == NULL)
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return;
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/* want main thread for process - has maps */
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thread = machine__findnew_thread(machine, sample->pid, sample->pid);
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if (thread == NULL) {
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pr_debug("Failed to get thread for pid %d\n", sample->pid);
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return;
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}
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if (thread__resolve_callchain(thread, cursor, evsel, sample,
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NULL, NULL, kwork->max_stack + 2) != 0) {
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pr_debug("Failed to resolve callchain, skipping\n");
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goto out_put;
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}
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callchain_cursor_commit(cursor);
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while (true) {
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node = callchain_cursor_current(cursor);
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if (node == NULL)
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break;
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sym = node->ms.sym;
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if (sym) {
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if (!strcmp(sym->name, "__softirqentry_text_start") ||
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!strcmp(sym->name, "__do_softirq"))
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sym->ignore = 1;
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}
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callchain_cursor_advance(cursor);
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}
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out_put:
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thread__put(thread);
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}
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static void timehist_print_event(struct perf_kwork *kwork,
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struct kwork_work *work,
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struct kwork_atom *atom,
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struct perf_sample *sample,
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struct addr_location *al)
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{
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char entrytime[32], exittime[32];
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char kwork_name[PRINT_KWORK_NAME_WIDTH];
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/*
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* runtime start
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*/
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timestamp__scnprintf_usec(atom->time,
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entrytime, sizeof(entrytime));
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printf(" %*s ", PRINT_TIMESTAMP_WIDTH, entrytime);
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/*
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* runtime end
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*/
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timestamp__scnprintf_usec(sample->time,
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exittime, sizeof(exittime));
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printf(" %*s ", PRINT_TIMESTAMP_WIDTH, exittime);
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/*
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* cpu
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*/
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printf(" [%0*d] ", PRINT_CPU_WIDTH, work->cpu);
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/*
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* kwork name
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*/
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if (work->class && work->class->work_name) {
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work->class->work_name(work, kwork_name,
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PRINT_KWORK_NAME_WIDTH);
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printf(" %-*s ", PRINT_KWORK_NAME_WIDTH, kwork_name);
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} else
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printf(" %-*s ", PRINT_KWORK_NAME_WIDTH, "");
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/*
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*runtime
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*/
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printf(" %*.*f ",
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PRINT_RUNTIME_WIDTH, RPINT_DECIMAL_WIDTH,
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(double)(sample->time - atom->time) / NSEC_PER_MSEC);
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/*
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* delaytime
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*/
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if (atom->prev != NULL)
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printf(" %*.*f ", PRINT_LATENCY_WIDTH, RPINT_DECIMAL_WIDTH,
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(double)(atom->time - atom->prev->time) / NSEC_PER_MSEC);
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else
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printf(" %*s ", PRINT_LATENCY_WIDTH, " ");
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/*
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* callchain
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*/
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if (kwork->show_callchain) {
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printf(" ");
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sample__fprintf_sym(sample, al, 0,
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EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE |
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EVSEL__PRINT_CALLCHAIN_ARROW |
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EVSEL__PRINT_SKIP_IGNORED,
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&callchain_cursor, symbol_conf.bt_stop_list,
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stdout);
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}
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printf("\n");
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}
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static int timehist_raise_event(struct perf_kwork *kwork,
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struct kwork_class *class,
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struct evsel *evsel,
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struct perf_sample *sample,
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struct machine *machine)
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{
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return work_push_atom(kwork, class, KWORK_TRACE_RAISE,
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KWORK_TRACE_MAX, evsel, sample,
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machine, NULL);
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}
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static int timehist_entry_event(struct perf_kwork *kwork,
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struct kwork_class *class,
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struct evsel *evsel,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int ret;
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struct kwork_work *work = NULL;
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ret = work_push_atom(kwork, class, KWORK_TRACE_ENTRY,
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KWORK_TRACE_RAISE, evsel, sample,
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machine, &work);
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if (ret)
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return ret;
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if (work != NULL)
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timehist_save_callchain(kwork, sample, evsel, machine);
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return 0;
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}
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static int timehist_exit_event(struct perf_kwork *kwork,
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struct kwork_class *class,
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struct evsel *evsel,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct kwork_atom *atom = NULL;
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struct kwork_work *work = NULL;
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struct addr_location al;
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if (machine__resolve(machine, &al, sample) < 0) {
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pr_debug("Problem processing event, skipping it\n");
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return -1;
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}
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atom = work_pop_atom(kwork, class, KWORK_TRACE_EXIT,
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KWORK_TRACE_ENTRY, evsel, sample,
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machine, &work);
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if (work == NULL)
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return -1;
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if (atom != NULL) {
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work->nr_atoms++;
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timehist_print_event(kwork, work, atom, sample, &al);
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atom_del(atom);
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}
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return 0;
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}
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static struct kwork_class kwork_irq;
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static int process_irq_handler_entry_event(struct perf_tool *tool,
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struct evsel *evsel,
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@ -991,6 +1172,42 @@ static int report_print_header(struct perf_kwork *kwork)
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return ret;
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}
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static void timehist_print_header(void)
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{
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/*
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* header row
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*/
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printf(" %-*s %-*s %-*s %-*s %-*s %-*s\n",
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PRINT_TIMESTAMP_WIDTH, "Runtime start",
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PRINT_TIMESTAMP_WIDTH, "Runtime end",
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PRINT_TIMEHIST_CPU_WIDTH, "Cpu",
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PRINT_KWORK_NAME_WIDTH, "Kwork name",
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PRINT_RUNTIME_WIDTH, "Runtime",
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PRINT_RUNTIME_WIDTH, "Delaytime");
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/*
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* units row
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*/
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printf(" %-*s %-*s %-*s %-*s %-*s %-*s\n",
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PRINT_TIMESTAMP_WIDTH, "",
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PRINT_TIMESTAMP_WIDTH, "",
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PRINT_TIMEHIST_CPU_WIDTH, "",
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PRINT_KWORK_NAME_WIDTH, "(TYPE)NAME:NUM",
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PRINT_RUNTIME_WIDTH, "(msec)",
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PRINT_RUNTIME_WIDTH, "(msec)");
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/*
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* separator
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*/
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printf(" %.*s %.*s %.*s %.*s %.*s %.*s\n",
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PRINT_TIMESTAMP_WIDTH, graph_dotted_line,
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PRINT_TIMESTAMP_WIDTH, graph_dotted_line,
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PRINT_TIMEHIST_CPU_WIDTH, graph_dotted_line,
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PRINT_KWORK_NAME_WIDTH, graph_dotted_line,
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PRINT_RUNTIME_WIDTH, graph_dotted_line,
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PRINT_RUNTIME_WIDTH, graph_dotted_line);
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}
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static void print_summary(struct perf_kwork *kwork)
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{
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u64 time = kwork->timeend - kwork->timestart;
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@ -1085,6 +1302,7 @@ static int perf_kwork__check_config(struct perf_kwork *kwork,
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struct perf_session *session)
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{
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int ret;
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struct evsel *evsel;
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struct kwork_class *class;
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static struct trace_kwork_handler report_ops = {
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@ -1095,6 +1313,11 @@ static int perf_kwork__check_config(struct perf_kwork *kwork,
|
||||
.raise_event = latency_raise_event,
|
||||
.entry_event = latency_entry_event,
|
||||
};
|
||||
static struct trace_kwork_handler timehist_ops = {
|
||||
.raise_event = timehist_raise_event,
|
||||
.entry_event = timehist_entry_event,
|
||||
.exit_event = timehist_exit_event,
|
||||
};
|
||||
|
||||
switch (kwork->report) {
|
||||
case KWORK_REPORT_RUNTIME:
|
||||
@ -1103,6 +1326,9 @@ static int perf_kwork__check_config(struct perf_kwork *kwork,
|
||||
case KWORK_REPORT_LATENCY:
|
||||
kwork->tp_handler = &latency_ops;
|
||||
break;
|
||||
case KWORK_REPORT_TIMEHIST:
|
||||
kwork->tp_handler = &timehist_ops;
|
||||
break;
|
||||
default:
|
||||
pr_debug("Invalid report type %d\n", kwork->report);
|
||||
return -1;
|
||||
@ -1131,6 +1357,14 @@ static int perf_kwork__check_config(struct perf_kwork *kwork,
|
||||
}
|
||||
}
|
||||
|
||||
list_for_each_entry(evsel, &session->evlist->core.entries, core.node) {
|
||||
if (kwork->show_callchain && !evsel__has_callchain(evsel)) {
|
||||
pr_debug("Samples do not have callchains\n");
|
||||
kwork->show_callchain = 0;
|
||||
symbol_conf.use_callchain = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1164,6 +1398,9 @@ static int perf_kwork__read_events(struct perf_kwork *kwork)
|
||||
goto out_delete;
|
||||
}
|
||||
|
||||
if (kwork->report == KWORK_REPORT_TIMEHIST)
|
||||
timehist_print_header();
|
||||
|
||||
ret = perf_session__process_events(session);
|
||||
if (ret) {
|
||||
pr_debug("Failed to process events, error %d\n", ret);
|
||||
@ -1257,6 +1494,31 @@ static int perf_kwork__process_tracepoint_sample(struct perf_tool *tool,
|
||||
return err;
|
||||
}
|
||||
|
||||
static int perf_kwork__timehist(struct perf_kwork *kwork)
|
||||
{
|
||||
/*
|
||||
* event handlers for timehist option
|
||||
*/
|
||||
kwork->tool.comm = perf_event__process_comm;
|
||||
kwork->tool.exit = perf_event__process_exit;
|
||||
kwork->tool.fork = perf_event__process_fork;
|
||||
kwork->tool.attr = perf_event__process_attr;
|
||||
kwork->tool.tracing_data = perf_event__process_tracing_data;
|
||||
kwork->tool.build_id = perf_event__process_build_id;
|
||||
kwork->tool.ordered_events = true;
|
||||
kwork->tool.ordering_requires_timestamps = true;
|
||||
symbol_conf.use_callchain = kwork->show_callchain;
|
||||
|
||||
if (symbol__validate_sym_arguments()) {
|
||||
pr_err("Failed to validate sym arguments\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
setup_pager();
|
||||
|
||||
return perf_kwork__read_events(kwork);
|
||||
}
|
||||
|
||||
static void setup_event_list(struct perf_kwork *kwork,
|
||||
const struct option *options,
|
||||
const char * const usage_msg[])
|
||||
@ -1370,6 +1632,8 @@ int cmd_kwork(int argc, const char **argv)
|
||||
.event_list_str = NULL,
|
||||
.summary = false,
|
||||
.sort_order = NULL,
|
||||
.show_callchain = false,
|
||||
.max_stack = 5,
|
||||
.timestart = 0,
|
||||
.timeend = 0,
|
||||
.nr_events = 0,
|
||||
@ -1419,6 +1683,27 @@ int cmd_kwork(int argc, const char **argv)
|
||||
"input file name"),
|
||||
OPT_PARENT(kwork_options)
|
||||
};
|
||||
const struct option timehist_options[] = {
|
||||
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
|
||||
"file", "vmlinux pathname"),
|
||||
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
|
||||
"file", "kallsyms pathname"),
|
||||
OPT_BOOLEAN('g', "call-graph", &kwork.show_callchain,
|
||||
"Display call chains if present"),
|
||||
OPT_UINTEGER(0, "max-stack", &kwork.max_stack,
|
||||
"Maximum number of functions to display backtrace."),
|
||||
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
|
||||
"Look for files with symbols relative to this directory"),
|
||||
OPT_STRING(0, "time", &kwork.time_str, "str",
|
||||
"Time span for analysis (start,stop)"),
|
||||
OPT_STRING('C', "cpu", &kwork.cpu_list, "cpu",
|
||||
"list of cpus to profile"),
|
||||
OPT_STRING('n', "name", &kwork.profile_name, "name",
|
||||
"event name to profile"),
|
||||
OPT_STRING('i', "input", &input_name, "file",
|
||||
"input file name"),
|
||||
OPT_PARENT(kwork_options)
|
||||
};
|
||||
const char *kwork_usage[] = {
|
||||
NULL,
|
||||
NULL
|
||||
@ -1431,8 +1716,12 @@ int cmd_kwork(int argc, const char **argv)
|
||||
"perf kwork latency [<options>]",
|
||||
NULL
|
||||
};
|
||||
const char * const timehist_usage[] = {
|
||||
"perf kwork timehist [<options>]",
|
||||
NULL
|
||||
};
|
||||
const char *const kwork_subcommands[] = {
|
||||
"record", "report", "latency", NULL
|
||||
"record", "report", "latency", "timehist", NULL
|
||||
};
|
||||
|
||||
argc = parse_options_subcommand(argc, argv, kwork_options,
|
||||
@ -1466,6 +1755,14 @@ int cmd_kwork(int argc, const char **argv)
|
||||
kwork.report = KWORK_REPORT_LATENCY;
|
||||
setup_sorting(&kwork, latency_options, latency_usage);
|
||||
return perf_kwork__report(&kwork);
|
||||
} else if (strlen(argv[0]) > 2 && strstarts("timehist", argv[0])) {
|
||||
if (argc > 1) {
|
||||
argc = parse_options(argc, argv, timehist_options, timehist_usage, 0);
|
||||
if (argc)
|
||||
usage_with_options(timehist_usage, timehist_options);
|
||||
}
|
||||
kwork.report = KWORK_REPORT_TIMEHIST;
|
||||
return perf_kwork__timehist(&kwork);
|
||||
} else
|
||||
usage_with_options(kwork_usage, kwork_options);
|
||||
|
||||
|
||||
@ -22,6 +22,7 @@ enum kwork_class_type {
|
||||
enum kwork_report_type {
|
||||
KWORK_REPORT_RUNTIME,
|
||||
KWORK_REPORT_LATENCY,
|
||||
KWORK_REPORT_TIMEHIST,
|
||||
};
|
||||
|
||||
enum kwork_trace_type {
|
||||
@ -200,6 +201,8 @@ struct perf_kwork {
|
||||
*/
|
||||
bool summary;
|
||||
const char *sort_order;
|
||||
bool show_callchain;
|
||||
unsigned int max_stack;
|
||||
|
||||
/*
|
||||
* statistics
|
||||
|
||||
Loading…
Reference in New Issue
Block a user