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OpenCloudOS-Kernel
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tools/kvm_stat: add interactive command 'c' 

Provide a real simple way to erase any active filter.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Stefan Raspl 2017-03-10 13:40:14 +01:00 committed by Paolo Bonzini
parent f9ff108735
commit 4443084fa0
2 changed files with 14 additions and 4 deletions
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16
tools/kvm/kvm_stat/kvm_stat
View File

@ -861,6 +861,7 @@ DELAY_INITIAL = 0.25
DELAY_REGULAR = 3.0
MAX_GUEST_NAME_LEN = 48
MAX_REGEX_LEN = 44
DEFAULT_REGEX = r'^[^\(]*$'
class Tui(object):
@ -907,9 +908,9 @@ class Tui(object):
def update_drilldown(self):
"""Sets or removes a filter that only allows fields without braces."""
if not self.stats.fields_filter:
self.stats.fields_filter = r'^[^\(]*$'
self.stats.fields_filter = DEFAULT_REGEX
elif self.stats.fields_filter == r'^[^\(]*$':
elif self.stats.fields_filter == DEFAULT_REGEX:
self.stats.fields_filter = None
def update_pid(self, pid):
@ -931,7 +932,8 @@ class Tui(object):
.format(pid, gname), curses.A_BOLD)
else:
self.screen.addstr(0, 0, 'kvm statistics - summary', curses.A_BOLD)
if self.stats.fields_filter and self.stats.fields_filter != '^[^\(]*$':
if self.stats.fields_filter and self.stats.fields_filter \
!= DEFAULT_REGEX:
regex = self.stats.fields_filter
if len(regex) > MAX_REGEX_LEN:
regex = regex[:MAX_REGEX_LEN] + '...'
@ -991,7 +993,7 @@ class Tui(object):
regex = self.screen.getstr()
curses.noecho()
if len(regex) == 0:
self.stats.fields_filter = r'^[^\(]*$'
self.stats.fields_filter = DEFAULT_REGEX
self.refresh_header()
return
try:
@ -1101,6 +1103,11 @@ class Tui(object):
sleeptime = DELAY_INITIAL
if char == 'q':
break
if char == 'c':
self.stats.fields_filter = DEFAULT_REGEX
self.refresh_header(0)
self.update_pid(0)
sleeptime = DELAY_INITIAL
if char == 'f':
self.show_filter_selection()
sleeptime = DELAY_INITIAL
@ -1177,6 +1184,7 @@ Requirements:
the large number of files that are possibly opened.
Interactive Commands:
c clear filter
f filter by regular expression
g filter by guest name
p filter by PID

2
tools/kvm/kvm_stat/kvm_stat.txt
View File

@ -29,6 +29,8 @@ meaning of events.
INTERACTIVE COMMANDS
--------------------
[horizontal]
*c*:: clear filter
*f*:: filter by regular expression
*g*:: filter by guest name