This patch implements a new xl get HW info interface. A new argument is added for psr-hwinfo command to get and show MBA HW info.
Signed-off-by: Yi Sun <yi.y....@linux.intel.com> --- v2: - split out this patch from a big patch in v1. (suggested by Wei Liu) - change 'MBA_INFO' to 'MBA'. Also, change 'mba_info' to 'mba'. (suggested by Chao Peng) --- tools/xl/xl_cmdtable.c | 1 + tools/xl/xl_psr.c | 39 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 38 insertions(+), 2 deletions(-) diff --git a/tools/xl/xl_cmdtable.c b/tools/xl/xl_cmdtable.c index 2c71a9f..5ac8a7e 100644 --- a/tools/xl/xl_cmdtable.c +++ b/tools/xl/xl_cmdtable.c @@ -524,6 +524,7 @@ struct cmd_spec cmd_table[] = { "[options]", "-m, --cmt Show Cache Monitoring Technology (CMT) hardware info\n" "-a, --cat Show Cache Allocation Technology (CAT) hardware info\n" + "-b, --mba Show Memory Bandwidth Allocation (MBA) hardware info\n" }, { "psr-cmt-attach", &main_psr_cmt_attach, 0, 1, diff --git a/tools/xl/xl_psr.c b/tools/xl/xl_psr.c index 7309d4f..ea37967 100644 --- a/tools/xl/xl_psr.c +++ b/tools/xl/xl_psr.c @@ -479,6 +479,33 @@ static int psr_l2_cat_hwinfo(void) return rc; } +static int psr_mba_hwinfo(void) +{ + int rc; + unsigned int i, nr; + libxl_psr_hw_info *info; + + rc = libxl_psr_get_hw_info(ctx, &info, &nr, + LIBXL_PSR_FEAT_TYPE_MBA, 0); + if (rc) + return rc; + + printf("Memory Bandwidth Allocation (MBA):\n"); + + for (i = 0; i < nr; i++) { + printf("%-16s: %u\n", "Socket ID", info[i].id); + printf("%-16s: %s\n", "Linear Mode", + info[i].u.mba.linear ? "Enabled" : "Disabled"); + printf("%-16s: %u\n", "Maximum COS", info[i].u.mba.cos_max); + printf("%-16s: %u\n", "Maximum Throttling Value", + info[i].u.mba.thrtl_max); + printf("%-16s: %u\n", "Default Throttling Value", 0); + } + + libxl_psr_hw_info_list_free(info, nr); + return rc; +} + int main_psr_cat_cbm_set(int argc, char **argv) { uint32_t domid; @@ -597,20 +624,24 @@ int main_psr_cat_show(int argc, char **argv) int main_psr_hwinfo(int argc, char **argv) { int opt, ret = 0; - bool all = true, cmt = false, cat = false; + bool all = true, cmt = false, cat = false, mba = false; static struct option opts[] = { {"cmt", 0, 0, 'm'}, {"cat", 0, 0, 'a'}, + {"mba", 0, 0, 'b'}, COMMON_LONG_OPTS }; - SWITCH_FOREACH_OPT(opt, "ma", opts, "psr-hwinfo", 0) { + SWITCH_FOREACH_OPT(opt, "mab", opts, "psr-hwinfo", 0) { case 'm': all = false; cmt = true; break; case 'a': all = false; cat = true; break; + case 'b': + all = false; mba = true; + break; } if (!ret && (all || cmt)) @@ -623,6 +654,10 @@ int main_psr_hwinfo(int argc, char **argv) if (all || cat) ret = psr_l2_cat_hwinfo(); + /* MBA is independent of CMT and CAT */ + if (all || mba) + ret = psr_mba_hwinfo(); + return ret; } -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel