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authorTejun Heo <tj@kernel.org>2024-09-04 11:41:32 -1000
committerTejun Heo <tj@kernel.org>2024-09-04 11:41:32 -1000
commit649e980dadee36f961738d054627225542d547a2 (patch)
treea67f0dc4ea53f03c85f5e0648f83f3ff0e4877f7 /include/linux/compiler.h
parenta4103eacc2ab408bb65e9902f0857b219fb489de (diff)
parent2ad6d23f465a4f851e3bcf6d74c315ce7b2c205b (diff)
Merge branch 'bpf/master' into for-6.12
Pull bpf/master to receive baebe9aaba1e ("bpf: allow passing struct bpf_iter_<type> as kfunc arguments") and related changes in preparation for the DSQ iterator patchset. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/compiler.h')
-rw-r--r--include/linux/compiler.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 2594553bb30b..2df665fa2964 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -297,6 +297,15 @@ static inline void *offset_to_ptr(const int *off)
#define is_unsigned_type(type) (!is_signed_type(type))
/*
+ * Useful shorthand for "is this condition known at compile-time?"
+ *
+ * Note that the condition may involve non-constant values,
+ * but the compiler may know enough about the details of the
+ * values to determine that the condition is statically true.
+ */
+#define statically_true(x) (__builtin_constant_p(x) && (x))
+
+/*
* This is needed in functions which generate the stack canary, see
* arch/x86/kernel/smpboot.c::start_secondary() for an example.
*/