[PATCH 12/18] perf scripts python: exported-sql-viewer.py: Add help window

Arnaldo Carvalho de Melo
2018-11-06T12:07:15Z

From: Adrian Hunter <adrian.hunter@intel.com>

Add a window to display help. It is also possible to display the help
only, by using the option "--help-only" instead of a database name.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20181104151238.15947-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/scripts/python/exported-sql-viewer.py | 155 ++++++++++++++++++++++-
1 file changed, 154 insertions(+), 1 deletion(-)

diff --git a/tools/perf/scripts/python/exported-sql-viewer.py b/tools/perf/scripts/python/exported-sql-viewer.py
index a9d2b3170141..c2fcf6c5237a 100755
--- a/tools/perf/scripts/python/exported-sql-viewer.py
+++ b/tools/perf/scripts/python/exported-sql-viewer.py
@@ -2084,6 +2084,147 @@ class WindowMenu():
def setActiveSubWindow(self, nr):
self.mdi_area.setActiveSubWindow(self.mdi_area.subWindowList()[nr - 1])

+# Help text
+
+glb_help_text = """
+ Contents
+
+p.c1 {
+ text-indent: 40px;
+}
+p.c2 {
+ text-indent: 80px;
+}
+}
+
+ 1. Reports
+ 1.1 Context-Sensitive Call Graph
+ 1.2 All branches
+ 1.3 Selected branches
+ 2. Tables
+ 1. Reports
+ 1.1 Context-Sensitive Call Graph
+The result is a GUI window with a tree representing a context-sensitive
+call-graph. Expanding a couple of levels of the tree and adjusting column
+widths to suit will display something like:
+
+ Call Graph: pt_example
+Call Path Object Count Time(ns) Time(%) Branch Count Branch Count(%)
+v- ls
+ v- 2638:2638
+ v- _start ld-2.19.so 1 10074071 100.0 211135 100.0
+ |- unknown unknown 1 13198 0.1 1 0.0
+ >- _dl_start ld-2.19.so 1 1400980 13.9 19637 9.3
+ >- _d_linit_internal ld-2.19.so 1 448152 4.4 11094 5.3
+ v-__libc_start_main@plt ls 1 8211741 81.5 180397 85.4
+ >- _dl_fixup ld-2.19.so 1 7607 0.1 108 0.1
+ >- __cxa_atexit libc-2.19.so 1 11737 0.1 10 0.0
+ >- __libc_csu_init ls 1 10354 0.1 10 0.0
+ |- _setjmp libc-2.19.so 1 0 0.0 4 0.0
+ v- main ls 1 8182043 99.6 180254 99.9
+
+ Points to note:
+
+ The top level is a command name (comm)
+ The next level is a thread (pid:tid)
+ Subsequent levels are functions
+ 'Count' is the number of calls
+ 'Time' is the elapsed time until the function returns
+ Percentages are relative to the level above
+ 'Branch Count' is the total number of branches for that function and all functions that it calls
+
+ Find
+Ctrl-F displays a Find bar which finds function names by either an exact match or a pattern match.
+The pattern matching symbols are ? for any character and * for zero or more characters.
+ 1.2 All branches
+The All branches report displays all branches in chronological order.
+Not all data is fetched immediately. More records can be fetched using the Fetch bar provided.
+ Disassembly
+Open a branch to display disassembly. This only works if:
+
+ The disassembler is available. Currently, only Intel XED is supported - see Intel XED Setup
+ The object code is available. Currently, only the perf build ID cache is searched for object code.
+The default directory ~/.debug can be overridden by setting environment variable PERF_BUILDID_DIR.
+One exception is kcore where the DSO long name is used (refer dsos_view on the Tables menu),
+or alternatively, set environment variable PERF_KCORE to the kcore file name.
+
+ Intel XED Setup
+To use Intel XED, libxed.so must be present. To build and install libxed.so:
+
+git clone https://github.com/intelxed/mbuild.git mbuild
+git clone https://github.com/intelxed/xed
+cd xed
+./mfile.py --share
+sudo ./mfile.py --prefix=/usr/local install
+sudo ldconfig
+
+ Find
+Ctrl-F displays a Find bar which finds substrings by either an exact match or a regular expression match.
+Refer to Python documentation for the regular expression syntax.
+All columns are searched, but only currently fetched rows are searched.
+ 1.3 Selected branches
+This is the same as the All branches report but with the data reduced
+by various selection criteria. A dialog box displays available criteria which are AND'ed together.
+ 1.3.1 Time ranges
+The time ranges hint text shows the total time range. Relative time ranges can also be entered in
+ms, us or ns. Also, negative values are relative to the end of trace. Examples:
+
+ 81073085947329-81073085958238 From 81073085947329 to 81073085958238
+ 100us-200us From 100us to 200us
+ 10ms- From 10ms to the end
+ -100ns The first 100ns
+ -10ms- The last 10ms
+
+N.B. Due to the granularity of timestamps, there could be no branches in any given time range.
+ 2. Tables
+The Tables menu shows all tables and views in the database. Most tables have an associated view
+which displays the information in a more friendly way. Not all data for large tables is fetched
+immediately. More records can be fetched using the Fetch bar provided. Columns can be sorted,
+but that can be slow for large tables.
+ There are also tables of database meta-information.
+For SQLite3 databases, the sqlite_master table is included.
+For PostgreSQL databases, information_schema.tables/views/columns are included.
+ Find
+Ctrl-F displays a Find bar which finds substrings by either an exact match or a regular expression match.
+Refer to Python documentation for the regular expression syntax.
+All columns are searched, but only currently fetched rows are searched.
+"""
+
+# Help window
+
+class HelpWindow(QMdiSubWindow):
+
+ def __init__(self, glb, parent=None):
+ super(HelpWindow, self).__init__(parent)
+
+ self.text = QTextBrowser()
+ self.text.setHtml(glb_help_text)
+ self.text.setReadOnly(True)
+ self.text.setOpenExternalLinks(True)
+
+ self.setWidget(self.text)
+
+ AddSubWindow(glb.mainwindow.mdi_area, self, "Exported SQL Viewer Help")
+
+# Main window that only displays the help text
+
+class HelpOnlyWindow(QMainWindow):
+
+ def __init__(self, parent=None):
+ super(HelpOnlyWindow, self).__init__(parent)
+
+ self.setMinimumSize(200, 100)
+ self.resize(800, 600)
+ self.setWindowTitle("Exported SQL Viewer Help")
+ self.setWindowIcon(self.style().standardIcon(QStyle.SP_MessageBoxInformation))
+
+ self.text = QTextBrowser()
+ self.text.setHtml(glb_help_text)
+ self.text.setReadOnly(True)
+ self.text.setOpenExternalLinks(True)
+
+ self.setCentralWidget(self.text)
+
# Font resize

def ResizeFont(widget, diff):
@@ -2170,6 +2311,9 @@ class MainWindow(QMainWindow):

self.window_menu = WindowMenu(self.mdi_area, menu)

+ help_menu = menu.addMenu("&Help")
+ help_menu.addAction(CreateAction("&Exported SQL Viewer Help", "Helpful information", self.Help, self, QKeySequence.HelpContents))
+
def Find(self):
win = self.mdi_area.activeSubWindow()
if win:
@@ -2230,6 +2374,9 @@ class MainWindow(QMainWindow):
def NewTableView(self, table_name):
TableWindow(self.glb, table_name, self)

+ def Help(self):
+ HelpWindow(self.glb, self)
+
# XED Disassembler

class xed_state_t(Structure):
@@ -2429,10 +2576,16 @@ class DBRef():

def Main():
if (len(sys.argv) < 2):
- print >> sys.stderr, "Usage is: exported-sql-viewer.py <database name>"
+ print >> sys.stderr, "Usage is: exported-sql-viewer.py {<database name> | --help-only}"
raise Exception("Too few arguments")

dbname = sys.argv[1]
+ if dbname == "--help-only":
+ app = QApplication(sys.argv)
+ mainwindow = HelpOnlyWindow()
+ mainwindow.show()
+ err = app.exec_()
+ sys.exit(err)

is_sqlite3 = False
try:
--
2.14.4