From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc The current regex also matches symbols in modules, which makes the test fail on s390 where name_show is present only once in the kernel, but also multiple times in modules: 000001b1401cdc20 t name_show 000001b0c05e6c40 t name_show [mdev] 000001b0c0495f30 t name_show [i2c_core] Fix this by changing the regular expression to only match the function name. Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/ Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- arch/x86/lib/cache-smp.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/x86/lib/cache-smp.c (limited to 'arch/x86/lib/cache-smp.c') diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c new file mode 100644 index 000000000..7d3edd6de --- /dev/null +++ b/arch/x86/lib/cache-smp.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include + +static void __wbinvd(void *dummy) +{ + wbinvd(); +} + +void wbinvd_on_cpu(int cpu) +{ + smp_call_function_single(cpu, __wbinvd, NULL, 1); +} +EXPORT_SYMBOL_FOR_KVM(wbinvd_on_cpu); + +void wbinvd_on_all_cpus(void) +{ + on_each_cpu(__wbinvd, NULL, 1); +} +EXPORT_SYMBOL(wbinvd_on_all_cpus); + +void wbinvd_on_cpus_mask(struct cpumask *cpus) +{ + on_each_cpu_mask(cpus, __wbinvd, NULL, 1); +} +EXPORT_SYMBOL_FOR_KVM(wbinvd_on_cpus_mask); + +static void __wbnoinvd(void *dummy) +{ + wbnoinvd(); +} + +void wbnoinvd_on_all_cpus(void) +{ + on_each_cpu(__wbnoinvd, NULL, 1); +} +EXPORT_SYMBOL_FOR_KVM(wbnoinvd_on_all_cpus); + +void wbnoinvd_on_cpus_mask(struct cpumask *cpus) +{ + on_each_cpu_mask(cpus, __wbnoinvd, NULL, 1); +} +EXPORT_SYMBOL_FOR_KVM(wbnoinvd_on_cpus_mask); -- cgit v1.3.1