From e1c13aed4a1641550e8c9518c96f016e1d52d09b Mon Sep 17 00:00:00 2001 From: Yijie Yang Date: Tue, 11 Aug 2026 16:46:47 +0800 Subject: dt-bindings: interconnect: qcom-bwmon: Add Maili cpu-bwmon compatible Add the Qualcomm Maili SoC compatible string for the CPU bandwidth monitor (BWMONv4). This falls back to the sdm845-bwmon compatible, consistent with the existing pattern used by other recent SoCs such as sm8750 and kaanapali. Signed-off-by: Yijie Yang Acked-by: Krzysztof Kozlowski Reviewed-by: Jingyi Wang Link: https://patch.msgid.link/20260811-bwmon-v2-1-80f7f150ab9e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) --- tools/perf/util/smt.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 tools/perf/util/smt.c (limited to 'tools/perf/util/smt.c') diff --git a/tools/perf/util/smt.c b/tools/perf/util/smt.c new file mode 100644 index 000000000..650e804d0 --- /dev/null +++ b/tools/perf/util/smt.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include "api/fs/fs.h" +#include "cputopo.h" +#include "smt.h" + +bool smt_on(void) +{ + static bool cached; + static bool cached_result; + int fs_value; + + if (cached) + return cached_result; + + if (sysfs__read_int("devices/system/cpu/smt/active", &fs_value) >= 0) + cached_result = (fs_value == 1); + else + cached_result = cpu_topology__smt_on(online_topology()); + + cached = true; + return cached_result; +} + +bool core_wide(bool system_wide, const char *user_requested_cpu_list) +{ + /* If not everything running on a core is being recorded then we can't use core_wide. */ + if (!system_wide) + return false; + + /* Cheap case that SMT is disabled and therefore we're inherently core_wide. */ + if (!smt_on()) + return true; + + return cpu_topology__core_wide(online_topology(), user_requested_cpu_list); +} -- cgit v1.3.1