From: Arnaldo Carvalho de Melo <[email protected]>
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
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_cogl_winsys_texture_pixmap_x11_update+0x117 (/usr/lib64/libcogl.so.20.4.1)
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(/usr/lib64/libcogl.so.20.4.1)
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(/usr/lib64/libcogl.so.20.4.1)
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(/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
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meta_shaped_texture_paint+0x3e3
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g_signal_emit_valist+0xc0d
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g_signal_emit+0x8f
(/usr/lib64/libgobject-2.0.so.0.4600.2)
clutter_actor_continue_paint+0x2bb
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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
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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)
_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)
363.086 ( 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 <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Milian Wolff <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/Documentation/perf-trace.txt | 4 +++
tools/perf/builtin-trace.c | 55 ++++++++++++++++++++++-----------
2 files changed, 41 insertions(+), 18 deletions(-)
diff --git a/tools/perf/Documentation/perf-trace.txt
b/tools/perf/Documentation/perf-trace.txt
index 2ee0c4fee18d..4e8baa75a32e 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -138,6 +138,10 @@ the thread executes on the designated CPUs. Default is to
monitor all CPUs.
Default: 127
+--min-stack::
+ Set the stack depth limit when parsing the callchain, anything
+ below the specified depth will be ignored. Disabled by default.
+
--proc-map-timeout::
When processing pre-existing threads /proc/XXX/mmap, it may take a long
time,
because the file may be huge. A time out is needed in such cases.
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 65f6abe75d71..6a64cb1344c7 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -108,6 +108,7 @@ struct trace {
proc_getname;
} stats;
unsigned int max_stack;
+ unsigned int min_stack;
bool not_ev_qualifier;
bool live;
bool full_time;
@@ -1849,7 +1850,7 @@ static int trace__sys_enter(struct trace *trace, struct
perf_evsel *evsel,
goto out_put;
}
- if (!(trace->duration_filter || trace->summary_only))
+ if (!(trace->duration_filter || trace->summary_only ||
trace->min_stack))
trace__printf_interrupted_entry(trace, sample);
ttrace->entry_time = sample->time;
@@ -1860,7 +1861,7 @@ static int trace__sys_enter(struct trace *trace, struct
perf_evsel *evsel,
args, trace, thread);
if (sc->is_exit) {
- if (!trace->duration_filter && !trace->summary_only) {
+ if (!(trace->duration_filter || trace->summary_only ||
trace->min_stack)) {
trace__fprintf_entry_head(trace, thread, 1,
sample->time, trace->output);
fprintf(trace->output, "%-70s\n", ttrace->entry_str);
}
@@ -1880,26 +1881,26 @@ out_put:
return err;
}
-static int trace__fprintf_callchain(struct trace *trace, struct perf_evsel
*evsel,
- struct perf_sample *sample)
+static int trace__resolve_callchain(struct trace *trace, struct perf_evsel
*evsel,
+ struct perf_sample *sample,
+ struct callchain_cursor *cursor)
{
struct addr_location al;
+
+ if (machine__resolve(trace->host, &al, sample) < 0 ||
+ thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL,
NULL, trace->max_stack))
+ return -1;
+
+ return 0;
+}
+
+static int trace__fprintf_callchain(struct trace *trace, struct perf_sample
*sample)
+{
/* TODO: user-configurable print_opts */
const unsigned int print_opts = EVSEL__PRINT_SYM |
EVSEL__PRINT_DSO |
EVSEL__PRINT_UNKNOWN_AS_ADDR;
- if (sample->callchain == NULL)
- return 0;
-
- if (machine__resolve(trace->host, &al, sample) < 0 ||
- thread__resolve_callchain(al.thread, &callchain_cursor, evsel,
- sample, NULL, NULL, trace->max_stack)) {
- pr_err("Problem processing %s callchain, skipping...\n",
- perf_evsel__name(evsel));
- return 0;
- }
-
return sample__fprintf_callchain(sample, 38, print_opts,
&callchain_cursor, trace->output);
}
@@ -1910,7 +1911,7 @@ static int trace__sys_exit(struct trace *trace, struct
perf_evsel *evsel,
long ret;
u64 duration = 0;
struct thread *thread;
- int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
+ int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1,
callchain_ret = 0;
struct syscall *sc = trace__syscall_info(trace, evsel, id);
struct thread_trace *ttrace;
@@ -1942,6 +1943,15 @@ static int trace__sys_exit(struct trace *trace, struct
perf_evsel *evsel,
} else if (trace->duration_filter)
goto out;
+ if (sample->callchain) {
+ callchain_ret = trace__resolve_callchain(trace, evsel, sample,
&callchain_cursor);
+ if (callchain_ret == 0) {
+ if (callchain_cursor.nr < trace->min_stack)
+ goto out;
+ callchain_ret = 1;
+ }
+ }
+
if (trace->summary_only)
goto out;
@@ -1982,7 +1992,10 @@ signed_print:
fputc('\n', trace->output);
- trace__fprintf_callchain(trace, evsel, sample);
+ if (callchain_ret > 0)
+ trace__fprintf_callchain(trace, sample);
+ else if (callchain_ret < 0)
+ pr_err("Problem processing %s callchain, skipping...\n",
perf_evsel__name(evsel));
out:
ttrace->entry_pending = false;
err = 0;
@@ -2131,7 +2144,10 @@ static int trace__event_handler(struct trace *trace,
struct perf_evsel *evsel,
fprintf(trace->output, ")\n");
- trace__fprintf_callchain(trace, evsel, sample);
+ if (sample->callchain) {
+ if (trace__resolve_callchain(trace, evsel, sample,
&callchain_cursor) == 0)
+ trace__fprintf_callchain(trace, sample);
+ }
return 0;
}
@@ -3082,6 +3098,9 @@ int cmd_trace(int argc, const char **argv, const char
*prefix __maybe_unused)
&record_parse_callchain_opt),
OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
"Show the kernel callchains on the syscall exit path"),
+ OPT_UINTEGER(0, "min-stack", &trace.min_stack,
+ "Set the minimum stack depth when parsing the callchain, "
+ "anything below the specified depth will be ignored."),
OPT_UINTEGER(0, "max-stack", &trace.max_stack,
"Set the maximum stack depth when parsing the callchain, "
"anything beyond the specified depth will be ignored. "
--
2.5.5
