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    Subject[PATCH v2 3/9] perf, tools: Add support for guest/host-only profiling
    Date
    From: Joerg Roedel <joerg.roedel@amd.com>

    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>
    Signed-off-by: Gleb Natapov <gleb@redhat.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 928918b..3b00775 100644
    --- a/tools/perf/util/parse-events.c
    +++ b/tools/perf/util/parse-events.c
    @@ -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;
    }
    --
    1.7.5.3


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