diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-01-04 17:54:19 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-01-06 15:49:49 -0200 |
| commit | 99320cc8240affcf33c04d28f47259de3b1a75d1 (patch) | |
| tree | 77320e3f5327c9dbfbd20ede725395930c50a286 /tools/perf/Documentation | |
| parent | 1aed2671738785e8f5aea663a6fda91aa7ef59b5 (diff) | |
perf tools: Add support for guest/host-only profiling
To restrict a counter to either host or guest mode this patch introduces
two new event modifiers: G and H.
With G the counter is configured in guest-only mode and with H in
host-only mode.
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Link: http://lkml.kernel.org/n/tip-or5aj3rghy9ngyg882z6kln9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-list.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt index 7a527f7e9da..ddc22525228 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -21,6 +21,8 @@ EVENT MODIFIERS Events can optionally have a modifer by appending a colon and one or more modifiers. Modifiers allow the user to restrict when events are counted with 'u' for user-space, 'k' for kernel, 'h' for hypervisor. +Additional modifiers are 'G' for guest counting (in KVM guests) and 'H' +for host counting (not in KVM guests). The 'p' modifier can be used for specifying how precise the instruction address should be. The 'p' modifier is currently only implemented for |