rtl88x2CE_WiFi_linux add concurrent mode

hc

2024-09-20 cf4ce59b3b70238352c7f1729f0f7223214828ad

 kernel/arch/s390/include/asm/ftrace.h
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@@ -11,9 +11,16 @@
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 #define MCOUNT_RETURN_FIXUP	18
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 #endif
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+#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
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+
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 #ifndef __ASSEMBLY__
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+#ifdef CONFIG_CC_IS_CLANG
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+/* https://bugs.llvm.org/show_bug.cgi?id=41424 */
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+#define ftrace_return_address(n) 0UL
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+#else
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 #define ftrace_return_address(n) __builtin_return_address(n)
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+#endif
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 void _mcount(void);
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 void ftrace_caller(void);
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@@ -82,5 +89,30 @@
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 #endif
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 }
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+/*
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+ * Even though the system call numbers are identical for s390/s390x a
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+ * different system call table is used for compat tasks. This may lead
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+ * to e.g. incorrect or missing trace event sysfs files.
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+ * Therefore simply do not trace compat system calls at all.
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+ * See kernel/trace/trace_syscalls.c.
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+ */
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+#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS
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+static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
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+{
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+	return is_compat_task();
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+}
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+
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+#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
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+static inline bool arch_syscall_match_sym_name(const char *sym,
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+					       const char *name)
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+{
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+	/*
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+	 * Skip __s390_ and __s390x_ prefix - due to compat wrappers
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+	 * and aliasing some symbols of 64 bit system call functions
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+	 * may get the __s390_ prefix instead of the __s390x_ prefix.
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+	 */
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+	return !strcmp(sym + 7, name) || !strcmp(sym + 8, name);
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+}
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+
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 #endif /* __ASSEMBLY__ */
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 #endif /* _ASM_S390_FTRACE_H */