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/proc/sys/kernel/perf_event_max_stack
There is an upper limit to what tooling considers a valid callchain,
and it was tied to the hardcoded value in the kernel,
PERF_MAX_STACK_DEPTH (127), now that this can be tuned via a sysctl,
make it read it and use that as the upper limit, falling back to
PERF_MAX_STACK_DEPTH for kernels where this sysctl isn't present.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-yjqsd30nnkogvj5oyx9ghir9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Leave it alone so that it ends up assigned to SCA_PID via its type,
'pid_t', that will look up the pid on the machine thread rb_tree and
possibly find its COMM.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-r7dujgmhtxxfajuunpt1bkuo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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To reduce the size of builtin-trace.c.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-8r3gmymyn3r0ynt4yuzspp9g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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To check deeply nested page fault callchains.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wuji34xx003kr88nmqt6jkgf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-shj0fazntmskhjild5i6x73l@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Forgot about page faults, a software event, when adding support for callchains,
fix it:
# trace --no-syscalls --pf maj --call dwarf
0.000 ( 0.000 ms): Xorg/2068 majfault [sfbSegment1+0x0] => /usr/lib64/xorg/modules/drivers/intel_drv.so@0x11b490 (x.)
sfbSegment1+0x0 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
fbPolySegment32+0x361 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
sna_poly_segment+0x743 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
damagePolySegment+0x77 (/usr/libexec/Xorg)
ProcPolySegment+0xe7 (/usr/libexec/Xorg)
Dispatch+0x25f (/usr/libexec/Xorg)
dix_main+0x3c3 (/usr/libexec/Xorg)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
_start+0x29 (/usr/libexec/Xorg)
0.257 ( 0.000 ms): Xorg/2068 majfault [miZeroClipLine+0x0] => /usr/libexec/Xorg@0x18e830 (x.)
miZeroClipLine+0x0 (/usr/libexec/Xorg)
_fbSegment+0x2c0 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
sfbSegment1+0x67 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
fbPolySegment32+0x361 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
sna_poly_segment+0x743 (/usr/lib64/xorg/modules/drivers/intel_drv.so)
damagePolySegment+0x77 (/usr/libexec/Xorg)
ProcPolySegment+0xe7 (/usr/libexec/Xorg)
Dispatch+0x25f (/usr/libexec/Xorg)
dix_main+0x3c3 (/usr/libexec/Xorg)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
_start+0x29 (/usr/libexec/Xorg)
^C#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-8h6ssirw5z15qyhy2lwd6f89@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Prep work for next patches, where we'll need access to the created
evsels, to possibly configure callchains.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2pcgsgnkgellhlcao4aub8tu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We have callchain_param.enabled for that.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-silwqjc2t25ls42dsvg28pp5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The variable is initialized and then conditionally set to a different
value, but not used when DWARF unwinding is not available, bummer, write
1000 times: "Run make -C tools/perf build-test"...
builtin-trace.c: In function ‘cmd_trace’:
builtin-trace.c:3112:6: error: variable ‘max_stack_user_set’ set but not
used [-Werror=unused-but-set-variable]
bool max_stack_user_set = true;
^
cc1: all warnings being treated as err
Fix it by marking it as __maybe_unused.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 056149932602 ("perf trace: Make --(min,max}-stack imply "--call-graph dwarf"")
Link: http://lkml.kernel.org/n/tip-85r40c5hhv6jnmph77l1hgsr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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To reduce the chances we'll overflow the mmap buffer, manual fine tuning
trumps this.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wxygbxmp1v9mng1ea28wet02@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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If one uses:
# perf trace --min-stack 16
Then it implicitly means that callgraphs should be enabled, and the best
option in terms of widespread availability is "dwarf".
Further work needed to choose a better alternative, LBR, in capable
systems.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-xtjmnpkyk42npekxz3kynzmx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Counterpart to --max-stack, to help focusing on deeply nested calls. Can
be combined with --duration, etc.
E.g.:
System wide syscall tracing looking for call stacks longer than 66:
# trace --mmap-pages 32768 --filter-pid 2711 --call-graph dwarf,16384 --min-stack 66
Or more compactly:
# trace -m 32768 --filt 2711 --call dwarf,16384 --min-st 66
363.027 ( 0.002 ms): gnome-shell/2287 poll(ufds: 0x7ffc5ea24230, nfds: 1, timeout_msecs: 4294967295 ) = 1
[0xf6fdd] (/usr/lib64/libc-2.22.so)
_xcb_conn_wait+0x92 (/usr/lib64/libxcb.so.1.1.0)
_xcb_out_send+0x4d (/usr/lib64/libxcb.so.1.1.0)
xcb_writev+0x45 (/usr/lib64/libxcb.so.1.1.0)
_XSend+0x19e (/usr/lib64/libX11.so.6.3.0)
_XReply+0x82 (/usr/lib64/libX11.so.6.3.0)
XSync+0x4d (/usr/lib64/libX11.so.6.3.0)
dri3_bind_tex_image+0x42 (/usr/lib64/libGL.so.1.2.0)
_cogl_winsys_texture_pixmap_x11_update+0x117 (/usr/lib64/libcogl.so.20.4.1)
_cogl_texture_pixmap_x11_update+0x67 (/usr/lib64/libcogl.so.20.4.1)
_cogl_texture_pixmap_x11_pre_paint+0x13 (/usr/lib64/libcogl.so.20.4.1)
_cogl_pipeline_layer_pre_paint+0x5e (/usr/lib64/libcogl.so.20.4.1)
_cogl_rectangles_validate_layer_cb+0x1b (/usr/lib64/libcogl.so.20.4.1)
cogl_pipeline_foreach_layer+0xbe (/usr/lib64/libcogl.so.20.4.1)
_cogl_framebuffer_draw_multitextured_rectangles+0x77 (/usr/lib64/libcogl.so.20.4.1)
cogl_framebuffer_draw_multitextured_rectangle+0x51 (/usr/lib64/libcogl.so.20.4.1)
paint_clipped_rectangle+0xb6 (/usr/lib64/libmutter.so.0.0.0)
meta_shaped_texture_paint+0x3e3 (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_window_actor_paint+0x14b (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_window_group_paint+0x19f (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
[0x3d970] (/usr/lib64/gnome-shell/libgnome-shell.so)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_stage_paint+0x3a (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_stage_paint+0x45 (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0x164 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
_clutter_stage_do_paint+0x17b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_stage_cogl_redraw+0x496 (/usr/lib64/libclutter-1.0.so.0.2400.2)
_clutter_stage_do_update+0x117 (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_clock_dispatch+0x169 (/usr/lib64/libclutter-1.0.so.0.2400.2)
g_main_context_dispatch+0x15a (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_context_iterate.isra.29+0x1e0 (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_loop_run+0xc2 (/usr/lib64/libglib-2.0.so.0.4600.2)
meta_run+0x2c (/usr/lib64/libmutter.so.0.0.0)
main+0x3f7 (/usr/bin/gnome-shell)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
[0x2909] (/usr/bin/gnome-shell)
363.038 ( 0.006 ms): gnome-shell/2287 writev(fd: 5<socket:[32540]>, vec: 0x7ffc5ea243a0, vlen: 3 ) = 4
__GI___writev+0x2d (/usr/lib64/libc-2.22.so)
_xcb_conn_wait+0x359 (/usr/lib64/libxcb.so.1.1.0)
_xcb_out_send+0x4d (/usr/lib64/libxcb.so.1.1.0)
xcb_writev+0x45 (/usr/lib64/libxcb.so.1.1.0)
_XSend+0x19e (/usr/lib64/libX11.so.6.3.0)
_XReply+0x82 (/usr/lib64/libX11.so.6.3.0)
XSync+0x4d (/usr/lib64/libX11.so.6.3.0)
dri3_bind_tex_image+0x42 (/usr/lib64/libGL.so.1.2.0)
_cogl_winsys_texture_pixmap_x11_update+0x117 (/usr/lib64/libcogl.so.20.4.1)
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cogl_pipeline_foreach_layer+0xbe (/usr/lib64/libcogl.so.20.4.1)
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cogl_framebuffer_draw_multitextured_rectangle+0x51 (/usr/lib64/libcogl.so.20.4.1)
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meta_shaped_texture_paint+0x3e3 (/usr/lib64/libmutter.so.0.0.0)
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g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
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g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
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clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_window_group_paint+0x19f (/usr/lib64/libmutter.so.0.0.0)
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[0x3d970] (/usr/lib64/gnome-shell/libgnome-shell.so)
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g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
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clutter_stage_cogl_redraw+0x496 (/usr/lib64/libclutter-1.0.so.0.2400.2)
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clutter_clock_dispatch+0x169 (/usr/lib64/libclutter-1.0.so.0.2400.2)
g_main_context_dispatch+0x15a (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_context_iterate.isra.29+0x1e0 (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_loop_run+0xc2 (/usr/lib64/libglib-2.0.so.0.4600.2)
meta_run+0x2c (/usr/lib64/libmutter.so.0.0.0)
main+0x3f7 (/usr/bin/gnome-shell)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
[0x2909] (/usr/bin/gnome-shell)
363.086 ( 0.042 ms): gnome-shell/2287 poll(ufds: 0x7ffc5ea24250, nfds: 1, timeout_msecs: 4294967295 ) = 1
[0xf6fdd] (/usr/lib64/libc-2.22.so)
_xcb_conn_wait+0x92 (/usr/lib64/libxcb.so.1.1.0)
wait_for_reply+0xb7 (/usr/lib64/libxcb.so.1.1.0)
xcb_wait_for_reply+0x61 (/usr/lib64/libxcb.so.1.1.0)
_XReply+0x127 (/usr/lib64/libX11.so.6.3.0)
XSync+0x4d (/usr/lib64/libX11.so.6.3.0)
dri3_bind_tex_image+0x42 (/usr/lib64/libGL.so.1.2.0)
_cogl_winsys_texture_pixmap_x11_update+0x117 (/usr/lib64/libcogl.so.20.4.1)
_cogl_texture_pixmap_x11_update+0x67 (/usr/lib64/libcogl.so.20.4.1)
_cogl_texture_pixmap_x11_pre_paint+0x13 (/usr/lib64/libcogl.so.20.4.1)
_cogl_pipeline_layer_pre_paint+0x5e (/usr/lib64/libcogl.so.20.4.1)
_cogl_rectangles_validate_layer_cb+0x1b (/usr/lib64/libcogl.so.20.4.1)
cogl_pipeline_foreach_layer+0xbe (/usr/lib64/libcogl.so.20.4.1)
_cogl_framebuffer_draw_multitextured_rectangles+0x77 (/usr/lib64/libcogl.so.20.4.1)
cogl_framebuffer_draw_multitextured_rectangle+0x51 (/usr/lib64/libcogl.so.20.4.1)
paint_clipped_rectangle+0xb6 (/usr/lib64/libmutter.so.0.0.0)
meta_shaped_texture_paint+0x3e3 (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_window_actor_paint+0x14b (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_real_paint+0x20 (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_window_group_paint+0x19f (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
[0x3d970] (/usr/lib64/gnome-shell/libgnome-shell.so)
_g_closure_invoke_va+0xb2 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_stage_paint+0x3a (/usr/lib64/libclutter-1.0.so.0.2400.2)
meta_stage_paint+0x45 (/usr/lib64/libmutter.so.0.0.0)
_g_closure_invoke_va+0x164 (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit_valist+0xc0d (/usr/lib64/libgobject-2.0.so.0.4600.2)
g_signal_emit+0x8f (/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_actor_paint.part.41+0x47b (/usr/lib64/libclutter-1.0.so.0.2400.2)
_clutter_stage_do_paint+0x17b (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_stage_cogl_redraw+0x496 (/usr/lib64/libclutter-1.0.so.0.2400.2)
_clutter_stage_do_update+0x117 (/usr/lib64/libclutter-1.0.so.0.2400.2)
clutter_clock_dispatch+0x169 (/usr/lib64/libclutter-1.0.so.0.2400.2)
g_main_context_dispatch+0x15a (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_context_iterate.isra.29+0x1e0 (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_loop_run+0xc2 (/usr/lib64/libglib-2.0.so.0.4600.2)
meta_run+0x2c (/usr/lib64/libmutter.so.0.0.0)
main+0x3f7 (/usr/bin/gnome-shell)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
[0x2909] (/usr/bin/gnome-shell)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-jncuxju9fibq2rl6olhqwjw6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
With multiple threads, e.g. a system wide trace session, and one syscall is
midway in a thread and another thread starts another syscall we must print the
start of the interrupted syscall followed by ..., but that can't be done that
way when we use the --duration filter, as we have to wait for the syscall exit
to calculate the duration and decide if it should be filtered, so we have to
disable the interrupted logic and only print at syscall exit, duh.
Before:
# trace --duration 100
<SNIP>
9.248 (0.023 ms): gnome-shell/2287 poll(ufds: 0x7ffc5ea26580, nfds: 1, timeout_msecs: 4294967295) ...
9.296 (0.001 ms): gnome-shell/2287 recvmsg(fd: 11<socket:[35818]>, msg: 0x7ffc5ea264a0 ) ...
9.311 (0.008 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
9.859 (0.023 ms): gnome-shell/2287 poll(ufds: 0x7ffc5ea24250, nfds: 1, timeout_msecs: 4294967295) ...
9.942 (0.051 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
10.467 (0.003 ms): gnome-shell/2287 poll(ufds: 0x55e623431220, nfds: 50, timeout_msecs: 4294967295) ...
11.136 (0.382 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
11.223 (0.023 ms): SoftwareVsyncT/24369 futex(uaddr: 0x7f5ec5df8c14, op: WAIT_BITSET|PRIV, val: 1, utime: 0x7f5ec5df8b68, val3: 4294967295) ...
16.865 (5.501 ms): firefox/24321 poll(ufds: 0x7f5ec388b460, nfds: 6, timeout_msecs: 4294967295 ) ...
22.571 (0.006 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
26.793 (4.063 ms): gnome-shell/2287 poll(ufds: 0x55e623431220, nfds: 50, timeout_msecs: 4294967295) ...
26.917 (0.080 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
27.291 (0.355 ms): qemu-system-x8/10065 ppoll(ufds: 0x55c98b39e400, nfds: 72, tsp: 0x7fffe4e4fe60, sigsetsize: 8) ...
27.336 (0.012 ms): SoftwareVsyncT/24369 futex(uaddr: 0x7f5ec5df8c14, op: WAIT_BITSET|PRIV, val: 1, utime: 0x7f5ec5df8b68, val3: 4294967295) ...
33.370 (5.958 ms): firefox/24321 poll(ufds: 0x7f5ec388b460, nfds: 6, timeout_msecs: 4294967295) ...
33.866 (0.021 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
35.762 (1.611 ms): gnome-shell/2287 poll(ufds: 0x55e623431220, nfds: 50, timeout_msecs: 8 ) ...
38.765 (2.910 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) ...
After:
# trace --duration 100
238.292 (153.226 ms): hexchat/2786 poll(ufds: 0x559ea372f370, nfds: 6, timeout_msecs: 153) = 0 Timeout
249.634 (199.433 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x7ffdcbb63610 ) = 1
385.583 (147.257 ms): hexchat/2786 poll(ufds: 0x559ea372f370, nfds: 6, timeout_msecs: 147) = 0 Timeout
397.166 (110.779 ms): gnome-shell/2287 poll(ufds: 0x55e623431220, nfds: 50, timeout_msecs: 4294967295) = 1
601.839 (132.066 ms): Xorg/2025 select(n: 512, inp: 0x83a8e0, tvp: 0x8316a0 ) = 1
602.445 (132.679 ms): gnome-shell/2287 poll(ufds: 0x55e623431220, nfds: 50, timeout_msecs: 4294967295) = 1
686.122 (300.418 ms): hexchat/2786 poll(ufds: 0x559ea372f370, nfds: 6, timeout_msecs: 300) = 0 Timeout
815.033 (184.641 ms): JS Helper/24352 futex(uaddr: 0x7f5ed98e584c, op: WAIT|PRIV, val: 1149859) = 0
825.868 (195.469 ms): JS Helper/24351 futex(uaddr: 0x7f5ed98e584c, op: WAIT|PRIV, val: 1149860) = 0
840.738 (210.335 ms): JS Helper/24350 futex(uaddr: 0x7f5ed98e584c, op: WAIT|PRIV, val: 1149861) = 0
914.898 (158.692 ms): Compositor/24363 futex(uaddr: 0x7f5ec8dfebf4, op: WAIT|PRIV, val: 1) = 0
915.199 (100.747 ms): Timer/24358 futex(uaddr: 0x7f5ed98e56cc, op: WAIT_BITSET|PRIV|CLKRT, val: 2545397, utime: 0x7f5ecdbfec30, val3: 4294967295) = 0
986.639 (247.325 ms): hexchat/2786 poll(ufds: 0x559ea372f370, nfds: 6, timeout_msecs: 247) = 0 Timeout
996.239 (500.591 ms): chrome/16237 poll(ufds: 0x3ecd739bd0, nfds: 5, timeout_msecs: 500) = 0 Timeout
1042.890 (120.076 ms): Timer/24358 futex(uaddr: 0x7f5ed98e56cc, op: WAIT_BITSET|PRIV|CLKRT, val: 2545403, utime: 0x7f5ecdbfec30, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d2nay6kjax5ro991c9kelvi5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Similar to the one in the other tools (report, script, top).
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lh7kk5a5t3erwxw31ah0cgar@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Not used at all, nuke it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-jf2w8ce8nl3wso3vuodg5jci@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
fprintf_{sym,callchain}
This way the print routine merely does printing, not requiring access to
the resolving machinery, which helps disentangling the object files and
easing creating subsets with a limited functionality set.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2ti2jbra8fypdfawwwm3aee3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
To reduce the size of builtin-trace.c.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ao91htwxdqwlwxr47gbluou1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
To better organize all these beautifiers.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-zrw5zz7cnrs44o5osouyutvt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
To better organize all these beautifiers.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-zbr27mdy9ssdhux3ib2nfa7j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Were the detached tarball (make perf-tar-src-pkg) build was failing because
those definitions aren't available in the system headers.
On RHEL7, for instance:
builtin-trace.c: In function ‘syscall_arg__scnprintf_getrandom_flags’:
builtin-trace.c:1113:14: error: ‘GRND_RANDOM’ undeclared (first use in this function)
P_FLAG(RANDOM);
^
builtin-trace.c:1114:14: error: ‘GRND_NONBLOCK’ undeclared (first use in this function)
P_FLAG(NONBLOCK);
^
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-r8496g24a3kbqynvk6617b0e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Were the detached tarball (make perf-tar-src-pkg) build was failing because
those definitions aren't available in the system headers.
On RHEL7, for instance:
builtin-trace.c: In function ‘syscall_arg__scnprintf_seccomp_op’:
builtin-trace.c:1069:7: error: ‘SECCOMP_SET_MODE_STRICT’ undeclared (first use in this function)
P_SECCOMP_SET_MODE_OP(STRICT);
^
builtin-trace.c:1069:7: note: each undeclared identifier is reported only once for each function it appears in
builtin-trace.c:1070:7: error: ‘SECCOMP_SET_MODE_FILTER’ undeclared (first use in this function)
P_SECCOMP_SET_MODE_OP(FILTER);
^
builtin-trace.c: In function ‘syscall_arg__scnprintf_seccomp_flags’:
builtin-trace.c:1091:14: error: ‘SECCOMP_FILTER_FLAG_TSYNC’ undeclared (first use in this function)
P_FLAG(TSYNC);
^
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-4f8dzzwd7g6l5dzz693u7kul@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Doesn't make sense and was causing a segfault, fix it.
# trace -e clone --no-syscalls --event sched:*exec firefox
The -e option can't be used with --no-syscalls.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ccrahezikdk2uebptzr1eyyi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Those were converted to be evsel methods long ago, move the
source to where it belongs.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-vja8rjmkw3gd5ungaeyb5s2j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
We already were able to ask for callchains for a specific event:
# trace -e nanosleep --call dwarf --event sched:sched_switch/call-graph=fp/ usleep 1
This would enable tracing just the "nanosleep" syscall, with callchains
at syscall exit and would ask the kernel for frame pointer callchains to
be enabled for the "sched:sched_switch" tracepoint event, its just that
we were not resolving the callchain and printing it in 'perf trace', do
it:
# trace -e nanosleep --call dwarf --event sched:sched_switch/call-graph=fp/ usleep 1
0.425 ( 0.013 ms): usleep/6718 nanosleep(rqtp: 0x7ffcc1d16e20) ...
0.425 ( ): sched:sched_switch:usleep:6718 [120] S ==> swapper/2:0 [120])
__schedule+0xfe200402 ([kernel.kallsyms])
schedule+0xfe200035 ([kernel.kallsyms])
do_nanosleep+0xfe20006f ([kernel.kallsyms])
hrtimer_nanosleep+0xfe2000dc ([kernel.kallsyms])
sys_nanosleep+0xfe20007a ([kernel.kallsyms])
do_syscall_64+0xfe200062 ([kernel.kallsyms])
return_from_SYSCALL_64+0xfe200000 ([kernel.kallsyms])
__nanosleep+0xffff008b8cbe2010 (/usr/lib64/libc-2.22.so)
0.486 ( 0.073 ms): usleep/6718 ... [continued]: nanosleep()) = 0
__nanosleep+0x10 (/usr/lib64/libc-2.22.so)
usleep+0x34 (/usr/lib64/libc-2.22.so)
main+0x1eb (/usr/bin/usleep)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
_start+0x29 (/usr/bin/usleep)
#
Pretty compact, huh? DWARF callchains for raw_syscalls:sys_exit + frame
pointer callchains for a tracepoint, if your hardware supports LBR, go
wild with /call-graph=lbr/, guess the next step is to lift this from
'perf script':
-F, --fields <str> comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw.
Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr,symoff,period,iregs,brstack,brstacksym,flags
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2e7yiv5hqdm8jywlmfivvx2v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Instead of having "[unknown]" as the name used for unresolved symbols,
use the address in the callchain, in hexadecimal form:
28.801 ( 0.007 ms): qemu-system-x8/10065 ppoll(ufds: 0x55c98b39e400, nfds: 72, tsp: 0x7fffe4e4fe60, sigsetsize: 8) = 0 Timeout
ppoll+0x91 (/usr/lib64/libc-2.22.so)
[0x337309] (/usr/bin/qemu-system-x86_64)
[0x336ab4] (/usr/bin/qemu-system-x86_64)
main+0x1724 (/usr/bin/qemu-system-x86_64)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
[0xc59a9] (/usr/bin/qemu-system-x86_64)
35.265 (14.805 ms): gnome-shell/2287 ... [continued]: poll()) = 1
[0xf6fdd] (/usr/lib64/libc-2.22.so)
g_main_context_iterate.isra.29+0x17c (/usr/lib64/libglib-2.0.so.0.4600.2)
g_main_loop_run+0xc2 (/usr/lib64/libglib-2.0.so.0.4600.2)
meta_run+0x2c (/usr/lib64/libmutter.so.0.0.0)
main+0x3f7 (/usr/bin/gnome-shell)
__libc_start_main+0xf0 (/usr/lib64/libc-2.22.so)
[0x2909] (/usr/bin/gnome-shell)
Suggested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
We don't need the callchains at the syscall enter tracepoint, just when
finishing it at syscall exit, so reduce the overhead by asking for
callchains just at syscall exit.
Suggested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Instead receive a callchain_param pointer to configure callchain
aspects, not doing so if NULL is passed.
This will allow fine grained control over which evsels in an evlist
gets callchains enabled.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2mupip6khc92mh5x4nw9to82@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The kernel parts are not that useful:
# trace -m 512 -e nanosleep --call dwarf usleep 1
0.065 ( 0.065 ms): usleep/18732 nanosleep(rqtp: 0x7ffc4ee4e200) = 0
syscall_slow_exit_work ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
return_from_SYSCALL_64 ([kernel.kallsyms])
__nanosleep (/usr/lib64/libc-2.22.so)
usleep (/usr/lib64/libc-2.22.so)
main (/usr/bin/usleep)
__libc_start_main (/usr/lib64/libc-2.22.so)
_start (/usr/bin/usleep)
#
So lets just use perf_event_attr.exclude_callchain_kernel to avoid
collecting it in the ring buffer:
# trace -m 512 -e nanosleep --call dwarf usleep 1
0.063 ( 0.063 ms): usleep/19212 nanosleep(rqtp: 0x7ffc3df10fb0) = 0
__nanosleep (/usr/lib64/libc-2.22.so)
usleep (/usr/lib64/libc-2.22.so)
main (/usr/bin/usleep)
__libc_start_main (/usr/lib64/libc-2.22.so)
_start (/usr/bin/usleep)
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-qctu3gqhpim0dfbcp9d86c91@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
In 'perf trace' we're just interested in printing callchains, and we
don't want to use the symbol_conf.use_callchain, so move the callchain
part to a new method.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kcn3romzivcpxb3u75s9nz33@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
As it receives a FILE, and its more than just the IP, which can even be
requested not to be printed.
For consistency with other similar methods in tools/perf/, name it as
perf_evsel__fprintf_sym() and make it return the number of bytes
printed, just like 'fprintf(3)'
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-84gawlqa3lhk63nf0t9vnqnn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Now, one can print the call chain for every encountered sys_exit event,
e.g.:
$ perf trace -e nanosleep --call-graph dwarf path/to/ex_sleep
1005.757 (1000.090 ms): ex_sleep/13167 nanosleep(...) = 0
syscall_slow_exit_work ([kernel.kallsyms])
syscall_return_slowpath ([kernel.kallsyms])
int_ret_from_sys_call ([kernel.kallsyms])
__nanosleep (/usr/lib/libc-2.23.so)
[unknown] (/usr/lib/libQt5Core.so.5.6.0)
QThread::sleep (/usr/lib/libQt5Core.so.5.6.0)
main (path/to/ex_sleep)
__libc_start_main (/usr/lib/libc-2.23.so)
_start (path/to/ex_sleep)
Note that it is advised to increase the number of mmap pages to prevent
event losses when using this new feature. Often, adding `-m 10M` to the
`perf trace` invocation is enough.
This feature is also available in strace when built with libunwind via
`strace -k`. Performance wise, this solution is much better:
$ time find path/to/linux &> /dev/null
real 0m0.051s
user 0m0.013s
sys 0m0.037s
$ time perf trace -m 800M --call-graph dwarf find path/to/linux &> /dev/null
real 0m2.624s
user 0m1.203s
sys 0m1.333s
$ time strace -k find path/to/linux &> /dev/null
real 0m35.398s
user 0m10.403s
sys 0m23.173s
Note that it is currently not possible to configure the print output.
Adding such a feature, similar to what is available in `perf script` via
its `--fields` knob can be added later on.
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
LPU-Reference: 1460115255-17648-1-git-send-email-milian.wolff@kdab.com
[ Split from a larger patch, do not print the IP, left align,
remove dup call symbol__init(), added man page entry ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
This patch allows cloning bpf-output event configuration among multiple
bpf scripts. If there exist a map named '__bpf_output__' and not
configured using 'map:__bpf_output__.event=', this patch clones the
configuration of another '__bpf_stdout__' map. For example, following
command:
# perf trace --ev bpf-output/no-inherit,name=evt/ \
--ev ./test_bpf_trace.c/map:__bpf_stdout__.event=evt/ \
--ev ./test_bpf_trace2.c usleep 100000
equals to:
# perf trace --ev bpf-output/no-inherit,name=evt/ \
--ev ./test_bpf_trace.c/map:__bpf_stdout__.event=evt/ \
--ev ./test_bpf_trace2.c/map:__bpf_stdout__.event=evt/ \
usleep 100000
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1460128045-97310-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
We're using libaudit for doing name to id and id to syscall name
translations, but that makes 'perf trace' to have to wait for newer
libaudit versions supporting recently added syscalls, such as
"userfaultfd" at the time of this changeset.
We have all the information right there, in the kernel sources, so move
this code to a separate place, wrapped behind functions that will
progressively use the kernel source files to extract the syscall table
for use in 'perf trace'.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-i38opd09ow25mmyrvfwnbvkj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
When reading the syscall tracepoint /format file, look for arguments of type
"mode_t" and attach a beautifier:
[root@jouet ~]# cat ~/bin/tp_with_fields_of_type
#!/bin/bash
grep -w $1 /sys/kernel/tracing/events/syscalls/*/format | sed -r 's%.*sys_enter_(.*)/format.*%\1%g' | paste -d, -s
# tp_with_fields_of_type umode_t
chmod,creat,fchmodat,fchmod,mkdirat,mkdir,mknodat,mknod,mq_open,openat,open
#
Testing it:
#define S_ISUID 0004000
#define S_ISGID 0002000
#define S_ISVTX 0001000
#define S_IRWXU 0000700
#define S_IRUSR 0000400
#define S_IWUSR 0000200
#define S_IXUSR 0000100
#define S_IRWXG 0000070
#define S_IRGRP 0000040
#define S_IWGRP 0000020
#define S_IXGRP 0000010
#define S_IRWXO 0000007
#define S_IROTH 0000004
#define S_IWOTH 0000002
#define S_IXOTH 0000001
# for mode in 4000 2000 1000 700 400 200 100 70 40 20 10 7 4 2 1 ; do \
echo -n $mode '->' ; trace --no-inherit -e chmod,fchmodat,fchmod chmod $mode x; \
done
4000 -> 0.338 ( 0.012 ms): fchmodat(dfd: CWD, filename: x, mode: ISUID) = 0
2000 -> 0.438 ( 0.015 ms): fchmodat(dfd: CWD, filename: x, mode: ISGID) = 0
1000 -> 0.677 ( 0.040 ms): fchmodat(dfd: CWD, filename: x, mode: ISVTX) = 0
700 -> 0.394 ( 0.013 ms): fchmodat(dfd: CWD, filename: x, mode: IRWXU) = 0
400 -> 0.337 ( 0.010 ms): fchmodat(dfd: CWD, filename: x, mode: IRUSR) = 0
200 -> 0.259 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: IWUSR) = 0
100 -> 0.249 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: IXUSR) = 0
70 -> 0.266 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: IRWXG) = 0
40 -> 0.329 ( 0.009 ms): fchmodat(dfd: CWD, filename: x, mode: IRGRP) = 0
20 -> 0.250 ( 0.009 ms): fchmodat(dfd: CWD, filename: x, mode: IWGRP) = 0
10 -> 0.259 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: IXGRP) = 0
7 -> 0.249 ( 0.009 ms): fchmodat(dfd: CWD, filename: x, mode: IRWXO) = 0
4 -> 0.278 ( 0.011 ms): fchmodat(dfd: CWD, filename: x, mode: IROTH) = 0
2 -> 0.276 ( 0.009 ms): fchmodat(dfd: CWD, filename: x, mode: IWOTH) = 0
1 -> 0.250 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: IXOTH) = 0
#
# trace --no-inherit -e chmod,fchmodat,fchmod chmod 7777 x
0.258 ( 0.011 ms): fchmodat(dfd: CWD, filename: x, mode: IALLUGO) = 0
# trace --no-inherit -e chmod,fchmodat,fchmod chmod 7770 x
0.258 ( 0.008 ms): fchmodat(dfd: CWD, filename: x, mode: ISUID|ISGID|ISVTX|IRWXU|IRWXG) = 0
# trace --no-inherit -e chmod,fchmodat,fchmod chmod 777 x
0.293 ( 0.012 ms): fchmodat(dfd: CWD, filename: x, mode: IRWXUGO
#
Now lets see if check by using the tracepoint for that specific syscall,
instead of raw_syscalls:sys_enter as 'trace' does for its strace fu:
# trace --no-inherit --ev syscalls:sys_enter_fchmodat -e fchmodat chmod 666 x
0.255 ( ): syscalls:sys_enter_fchmodat:dfd: 0xffffffffffffff9c, filename: 0x55db32a3f0f0, mode: 0x000001b6)
0.268 ( 0.012 ms): fchmodat(dfd: CWD, filename: x, mode: IRUGO|IWUGO ) = 0
#
Perfect, 0x1bc == 0666.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-18e8zfgbkj83xo87yoom43kd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
When reading the syscall tracepoint /format file, look for arguments
of type "pid_t" and attach the PID beautifier, that will do a lookup
on the threads it knows, i.e. the ones that came from PERF_RECORD_COMM
events and add the COMM after the pid in such args:
Excerpt of a system wide trace for syscalls with pid_t args:
55602.977 ( 0.006 ms): bash/12122 setpgid(pid: 24347 (bash), pgid: 24347 (bash)) = 0
55603.024 ( 0.004 ms): bash/24347 setpgid(pid: 24347 (bash), pgid: 24347 (bash)) = 0
55691.527 (88.397 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee1720, options: UNTRACED|CONTINUED) ...
55692.479 ( 0.952 ms): git/24347 wait4(upid: 24368, stat_addr: 0x7ffe030d5724) ...
55694.549 ( 2.070 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4fc10) = 24369 (pre-commit)
55694.575 ( 0.002 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4f650, options: NOHANG) = -1 ECHILD No child processes
55695.934 ( 0.010 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4f2d0, options: NOHANG) = 24370 (git)
55695.937 ( 0.001 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4f2d0, options: NOHANG) = -1 ECHILD No child processes
55717.963 ( 0.000 ms): pre-commit/24371 ... [continued]: wait4()) = 24372
55717.978 (21.468 ms): :24371/24371 wait4(upid: -1, stat_addr: 0x7ffc94f4f230) ...
55718.087 ( 0.109 ms): pre-commit/24371 wait4(upid: -1, stat_addr: 0x7ffc94f4f230) = 24373 (tr)
55718.187 ( 0.096 ms): pre-commit/24371 wait4(upid: -1, stat_addr: 0x7ffc94f4f230) = 24374 (wc)
55718.218 ( 0.002 ms): pre-commit/24371 wait4(upid: -1, stat_addr: 0x7ffc94f4eed0, options: NOHANG) = -1 ECHILD No child processes
55718.367 ( 0.005 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4f1d0, options: NOHANG) = 24371 (pre-commit)
55718.369 ( 0.001 ms): pre-commit/24368 wait4(upid: -1, stat_addr: 0x7ffc94f4f1d0, options: NOHANG) = -1 ECHILD No child processes
55741.021 (49.494 ms): git/24347 ... [continued]: wait4()) = 24368 (pre-commit)
74146.427 (18319.601 ms): git/24347 wait4(upid: 24375 (git), stat_addr: 0x7ffe030d6824) ...
74149.036 ( 0.891 ms): bash/24391 wait4(upid: -1, stat_addr: 0x7ffe0cee0560) = 24393 (sed)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-75yl9hzjhb020iadc81gdj8t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Showing the COMM for that return, if available.
# trace -e getpid,getppid,set_tid_address
490.007 ( 0.005 ms): sh/8250 getpid(...) = 8250 (sh)
490.014 ( 0.001 ms): sh/8250 getppid(...) = 7886 (make)
491.156 ( 0.004 ms): install/8251 set_tid_address(tidptr: 0x7f204a9d4ad0) = 8251 (install)
^C
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-psbpplqupatom9x4uohbxid5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Starting with clone, waitid and wait4:
# trace -e waitid,wait4
1.385 ( 1.385 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee1720, options: UNTRACED|CONTINUED) = 1210 (ls)
1.426 ( 0.002 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee1150, options: NOHANG|UNTRACED|CONTINUED) = 0
3.293 ( 0.604 ms): bash/1211 wait4(upid: -1, stat_addr: 0x7ffe0cee0560 ) = 1214 (sed)
3.342 ( 0.002 ms): bash/1211 wait4(upid: -1, stat_addr: 0x7ffe0cee01d0, options: NOHANG ) = -1 ECHILD No child processes
3.576 ( 0.016 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee0550, options: NOHANG|UNTRACED|CONTINUED) = 1211 (bash)
^C# trace -e clone
0.027 ( 0.000 ms): systemd/1 ... [continued]: clone()) = 1227 (systemd)
0.050 ( 0.000 ms): systemd/1227 ... [continued]: clone()) = 0
^C[root@jouet ~]#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lyf5d3y5j15wikjb6pe6ukoi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
# trace -e waitid,wait4
0.557 ( 0.557 ms): bash/27335 wait4(upid: -1, stat_addr: 0x7ffd02f449f0) = 27336
1.250 ( 0.685 ms): bash/27335 wait4(upid: -1, stat_addr: 0x7ffd02f449f0) = 27337
1.312 ( 0.002 ms): bash/27335 wait4(upid: -1, stat_addr: 0x7ffd02f44690, options: NOHANG) = -1 ECHILD No child processes
1.550 ( 0.015 ms): bash/3856 wait4(upid: -1, stat_addr: 0x7ffd02f44990, options: NOHANG|UNTRACED|CONTINUED) = 27335
1.552 ( 0.001 ms): bash/3856 wait4(upid: -1, stat_addr: 0x7ffd02f44990, options: NOHANG|UNTRACED|CONTINUED) = 0
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-i5vlo5n5jv0amt8bkyicmdxh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
$ trace -e sched_setscheduler chrt -f 1 usleep 1
chrt: failed to set pid 0's policy: Operation not permitted
0.005 ( 0.005 ms): chrt/19189 sched_setscheduler(policy: FIFO, param: 0x7ffec5273d70) = -1 EPERM Operation not permitted
$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-i5vlo5n5jv0amt8bkyicmdxh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
This was causing bogus values to be shown at the timestamp column:
Before:
# trace --ev bpf-output/no-inherit,name=evt/ --ev /home/acme/bpf/test_bpf_trace.c/map:channel.event=evt/ usleep 10
94631143.385 ( 0.001 ms): brk( ) = 0x555555757000
94631143.398 ( 0.003 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1) = 0x7ffff7ff6000
94631143.406 ( 0.004 ms): access(filename: 0xf7df9e10, mode: R ) = -1 ENOENT No such file or directory
94631143.412 ( 0.004 ms): open(filename: 0xf7df8761, flags: CLOEXEC) = 3
94631143.415 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fffffffd6b0 ) = 0
94631143.419 ( 0.003 ms): mmap(len: 106798, prot: READ, flags: PRIVATE, fd: 3) = 0x7ffff7fdb000
94631143.420 ( 0.001 ms): close(fd: 3 ) = 0
94631143.432 ( 0.004 ms): open(filename: 0xf7ff6640, flags: CLOEXEC) = 3
<SNIP>
After:
# trace --ev bpf-output/no-inherit,name=evt/ --ev /home/acme/bpf/test_bpf_trace.c/map:channel.event=evt/ usleep 10
0.022 ( 0.001 ms): brk( ) = 0x55d7668a6000
0.037 ( 0.003 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1) = 0x7f8fbeb97000
0.123 ( 0.083 ms): access(filename: 0xbe995e10, mode: R ) = -1 ENOENT No such file or directory
0.130 ( 0.004 ms): open(filename: 0xbe994761, flags: CLOEXEC) = 3
0.133 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fff6487a890 ) = 0
0.138 ( 0.003 ms): mmap(len: 106798, prot: READ, flags: PRIVATE, fd: 3) = 0x7f8fbeb7c000
0.140 ( 0.001 ms): close(fd: 3 ) = 0
0.151 ( 0.004 ms): open(filename: 0xbeb97640, flags: CLOEXEC) = 3
<SNIP>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-p7m8llv81iv55ekxexdp5n57@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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That is used in both live runs, i.e.:
# trace ls
As when processing events recorded in a perf.data file:
# trace -i perf.data
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-901l6yebnzeqg7z8mbaf49xb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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# trace -e getrandom
35622.560 ( 0.023 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35622.585 ( 0.006 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35622.594 ( 0.004 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35627.395 ( 0.010 ms): libvirtd/1353 getrandom(buf: 0x7f7a1bfa35c0, count: 16, flags: NONBLOCK ) = 16
35630.940 ( 0.013 ms): fwupd/16120 getrandom(buf: 0x7f63243aa5c0, count: 16, flags: NONBLOCK ) = 16
35718.613 ( 0.015 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35718.629 ( 0.005 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35718.637 ( 0.004 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
35719.355 ( 0.010 ms): libvirtd/1353 getrandom(buf: 0x7f7a1bfa35c0, count: 16, flags: NONBLOCK ) = 16
35721.042 ( 0.030 ms): fwupd/16120 getrandom(buf: 0x7f63243aa5c0, count: 16, flags: NONBLOCK ) = 16
41090.830 ( 0.012 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41090.845 ( 0.004 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41090.851 ( 0.004 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41091.750 ( 0.010 ms): libvirtd/1353 getrandom(buf: 0x7f7a1bfa35c0, count: 16, flags: NONBLOCK ) = 16
41091.823 ( 0.006 ms): fwupd/16120 getrandom(buf: 0x7f63243aa5c0, count: 16, flags: NONBLOCK ) = 16
41122.078 ( 0.053 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41122.129 ( 0.009 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41122.139 ( 0.004 ms): systemd-udevd/631 getrandom(buf: 0x55621e3c18f0, count: 16, flags: NONBLOCK) = 16
41124.492 ( 0.007 ms): libvirtd/1353 getrandom(buf: 0x7f7a1bfa35c0, count: 16, flags: NONBLOCK ) = 16
41124.470 ( 0.013 ms): fwupd/16120 getrandom(buf: 0x7f63243aa5c0, count: 16, flags: NONBLOCK ) = 16
41590.832 ( 0.014 ms): chrome/5957 getrandom(buf: 0x7fabac7b15b0, count: 16, flags: NONBLOCK ) = 16
41590.884 ( 0.004 ms): chrome/5957 getrandom(buf: 0x7fabac7b15c0, count: 16, flags: NONBLOCK ) = 16
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-gca0n1p3aca3depey703ph2q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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E.g:
# trace -e seccomp
200.061 (0.009 ms): :2441/2441 seccomp(op: FILTER, flags: TSYNC ) = -1 EFAULT Bad address
200.910 (0.121 ms): :2441/2441 seccomp(op: FILTER, flags: TSYNC, uargs: 0x7fff57479fe0) = 0
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-t369uckshlwp4evkks4bcoo7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We catch this record to provide a visual indication that events are
getting lost, then call the default method to allow extra logging shared
with the other tools to take place.
This extra logging was done twice because we were continuing to the
"default" clause where machine__process_event() will end up calling
machine__process_lost_event() again, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wus2zlhw3qo24ye84ewu4aqw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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To avoid parsing event->header.misc in many locations.
This will also allow setting perf.sample.{ip,cpumode} in a single place,
from tracepoint fields, as needed by 'perf kvm' with PPC guests, where
the guest hardware counters is not available at the host.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-qp3yradhyt6q3wl895b1aat0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Format fields of a syscall have the first variable '__syscall_nr' or
'nr' that mean the syscall number. But it isn't relevant here so drop
it.
'nr' among fields of syscall was renamed '__syscall_nr'. So add
exception handling to drop '__syscall_nr' and modify the comment for
this excpetion handling.
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1456492465-5946-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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With this patch the contend of BPF output event is printed by
'perf trace'. For example:
# ./perf trace -a --ev bpf-output/no-inherit,name=evt/ \
--ev ./test_bpf_trace.c/map:channel.event=evt/ \
usleep 100000
...
1.787 ( 0.004 ms): usleep/3832 nanosleep(rqtp: 0x7ffc78b18980 ) ...
1.787 ( ): evt:Raise a BPF event!..)
1.788 ( ): perf_bpf_probe:func_begin:(ffffffff810e97d0))
...
101.866 (87.038 ms): gmain/1654 poll(ufds: 0x7f57a80008c0, nfds: 2, timeout_msecs: 1000 ) ...
101.866 ( ): evt:Raise a BPF event!..)
101.867 ( ): perf_bpf_probe:func_end:(ffffffff810e97d0 <- ffffffff81796173))
101.869 (100.087 ms): usleep/3832 ... [continued]: nanosleep()) = 0
...
(There is an extra ')' at the end of several lines. However, it is
another problem, unrelated to this commit.)
Where test_bpf_trace.c is:
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
#define SEC(NAME) __attribute__((section(NAME), used))
static u64 (*ktime_get_ns)(void) =
(void *)BPF_FUNC_ktime_get_ns;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
static int (*get_smp_processor_id)(void) =
(void *)BPF_FUNC_get_smp_processor_id;
static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) =
(void *)BPF_FUNC_perf_event_output;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(u32),
.max_entries = __NR_CPUS__,
};
static inline int __attribute__((always_inline))
func(void *ctx, int type)
{
char output_str[] = "Raise a BPF event!";
char err_str[] = "BAD %d\n";
int err;
err = perf_event_output(ctx, &channel, get_smp_processor_id(),
&output_str, sizeof(output_str));
if (err)
trace_printk(err_str, sizeof(err_str), err);
return 1;
}
SEC("func_begin=sys_nanosleep")
int func_begin(void *ctx) {return func(ctx, 1);}
SEC("func_end=sys_nanosleep%return")
int func_end(void *ctx) { return func(ctx, 2);}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456479154-136027-8-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Without this patch BPF map configuration is not applied.
Command like this:
# ./perf trace --ev bpf-output/no-inherit,name=evt/ \
--ev ./test_bpf_trace.c/map:channel.event=evt/ \
usleep 100000
Load BPF files without error, but since map:channel.event=evt is not
applied, bpf-output event not work.
This patch allows 'perf trace' load and run BPF scripts.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456479154-136027-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move the subcommand-related files from perf to a new library named
libsubcmd.a.
Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to
'exec-cmd.*' to be consistent with the naming of all the other files.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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# perf trace -e bpf perf record -e /tmp/foo.o -a
362.779 (0.130 ms): perf/3451 bpf(cmd: PROG_LOAD, uattr: 0x7ffe9a6825d0, size: 48) = 3
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-2b0nknu53baz9e0wj4thcdd8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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