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    Subject[PATCH 4.10 51/93] perf annotate s390: Implement jump types for perf annotate
    Date
    4.10-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Christian Borntraeger <borntraeger@de.ibm.com>

    commit d9f8dfa9baf9b6ae1f2f84f887176558ecde5268 upstream.

    Implement simple detection for all kind of jumps and branches.

    Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
    Cc: Andreas Krebbel <krebbel@linux.vnet.ibm.com>
    Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: linux-s390 <linux-s390@vger.kernel.org>
    Link: http://lkml.kernel.org/r/1491465112-45819-3-git-send-email-borntraeger@de.ibm.com
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    tools/perf/arch/s390/annotate/instructions.c | 30 +++++++++++++++++++++++++++
    tools/perf/util/annotate.c | 2 +
    2 files changed, 32 insertions(+)

    --- /dev/null
    +++ b/tools/perf/arch/s390/annotate/instructions.c
    @@ -0,0 +1,30 @@
    +static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)
    +{
    + struct ins_ops *ops = NULL;
    +
    + /* catch all kind of jumps */
    + if (strchr(name, 'j') ||
    + !strncmp(name, "bct", 3) ||
    + !strncmp(name, "br", 2))
    + ops = &jump_ops;
    + /* override call/returns */
    + if (!strcmp(name, "bras") ||
    + !strcmp(name, "brasl") ||
    + !strcmp(name, "basr"))
    + ops = &call_ops;
    + if (!strcmp(name, "br"))
    + ops = &ret_ops;
    +
    + arch__associate_ins_ops(arch, name, ops);
    + return ops;
    +}
    +
    +static int s390__annotate_init(struct arch *arch)
    +{
    + if (!arch->initialized) {
    + arch->initialized = true;
    + arch->associate_instruction_ops = s390__associate_ins_ops;
    + }
    +
    + return 0;
    +}
    --- a/tools/perf/util/annotate.c
    +++ b/tools/perf/util/annotate.c
    @@ -108,6 +108,7 @@ static int arch__associate_ins_ops(struc
    #include "arch/arm64/annotate/instructions.c"
    #include "arch/x86/annotate/instructions.c"
    #include "arch/powerpc/annotate/instructions.c"
    +#include "arch/s390/annotate/instructions.c"

    static struct arch architectures[] = {
    {
    @@ -132,6 +133,7 @@ static struct arch architectures[] = {
    },
    {
    .name = "s390",
    + .init = s390__annotate_init,
    .objdump = {
    .comment_char = '#',
    },

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