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perf: add stalled_cycles_backend perf event support

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This patch adds support and documentation for
the stalled_cycles_backend perf event.

Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
This commit is contained in:
Nitesh Konkar
2016-12-15 16:47:05 -05:00
committed by John Ferlan
parent 060c159b08
commit 9ae79400ff
10 changed files with 43 additions and 4 deletions
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tools/virsh.pod
+6 -1
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@@ -949,7 +949,8 @@ I<--perf> returns the statistics of all enabled perf events:
"perf.branch_instructions" - the count of branch instructions,
"perf.branch_misses" - the count of branch misses,
"perf.bus_cycles" - the count of bus cycles,
"perf.stalled_cycles_frontend" - the count of stalled frontend cpu cycles
"perf.stalled_cycles_frontend" - the count of stalled frontend cpu cycles,
"perf.stalled_cycles_backend" - the count of stalled backend cpu cycles
See the B<perf> command for more details about each event.
@@ -2307,6 +2308,10 @@ B<Valid perf event names>
cycles in the frontend of the
instruction processor pipeline by
applications running on the platform.
stalled_cycles_backend - Provides the count of stalled cpu
cycles in the backend of the
instruction processor pipeline by
applications running on the platform.
B<Note>: The statistics can be retrieved using the B<domstats> command using
the I<--perf> flag.