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perf tools: Add support for guest/host-only profiling

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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>
This commit is contained in:
Joerg Roedel
2012-01-04 17:54:19 +01:00
committed by Arnaldo Carvalho de Melo
parent 1aed267173
commit 99320cc824
2 changed files with 14 additions and 2 deletions
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14
tools/perf/util/parse-events.c
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@ -735,8 +735,8 @@ 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;
@ -760,6 +760,14 @@ 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
@ -776,6 +784,8 @@ 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;
}