[PATCH 3/5] perf, tools: Add support for guest/host-only profiling

Joerg Roedel
2011-06-17T13:37:32Z

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.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
tools/perf/util/parse-events.c | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 41982c3..8bfb8de 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -728,8 +728,8 @@ static int
parse_event_modifier(const char **strp, struct perf_event_attr *attr)
{
const char *str = *strp;
- int exclude = 0;
- int eu = 0, ek = 0, eh = 0, precise = 0;
+ int exclude = 0, exclude_GH = 0;
+ int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;

if (!*str)
return 0;
@@ -753,6 +753,14 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
if (!exclude)
exclude = eu = ek = eh = 1;
eh = 0;
+ } else if (*str == 'G') {
+ if (!exclude_GH)
+ exclude_GH = eG = eH = 1;
+ eG = 0;
+ } else if (*str == 'H') {
+ if (!exclude_GH)
+ exclude_GH = eG = eH = 1;
+ eH = 0;
} else if (*str == 'p') {
precise++;
} else
@@ -769,6 +777,8 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
attr->exclude_kernel = ek;
attr->exclude_hv = eh;
attr->precise_ip = precise;
+ attr->exclude_host = eH;
+ attr->exclude_guest = eG;

return 0;
}
--
1.7.4.1