common/assert: mark assert helpers with [[gnu::cold]]

for better performance,
see
https://gcc.gnu.org/onlinedocs/gcc-7.3.0/gcc/Common-Function-Attributes.html#Common-Function-Attributes

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/common/assert.cc b/src/common/assert.cc
index 4a9625925f91b0ff680bb2077c6b51c05b0835ee..1530a6cba18dae11ab0a8fba9326871688a22d6f 100644 (file)
--- a/src/common/assert.cc
+++ b/src/common/assert.cc
@@ -33,8 +33,9 @@ namespace ceph {
     g_assert_context = cct;
   }
 
-  void __ceph_assert_fail(const char *assertion, const char *file, int line,
-                         const char *func)
+  [[gnu::cold]] void __ceph_assert_fail(const char *assertion,
+                                       const char *file, int line,
+                                       const char *func)
   {
     g_assert_condition = assertion;
     g_assert_file = file;
@@ -73,13 +74,15 @@ namespace ceph {
     abort();
   }
 
-  void __ceph_assert_fail(const assert_data &ctx)
+  [[gnu::cold]] void __ceph_assert_fail(const assert_data &ctx)
   {
     __ceph_assert_fail(ctx.assertion, ctx.file, ctx.line, ctx.function);
   }
 
-  void __ceph_assertf_fail(const char *assertion, const char *file, int line,
-                          const char *func, const char* msg, ...)
+  [[gnu::cold]] void __ceph_assertf_fail(const char *assertion,
+                                        const char *file, int line,
+                                        const char *func, const char* msg,
+                                        ...)
   {
     ostringstream tss;
     tss << ceph_clock_now();
@@ -154,8 +157,9 @@ namespace ceph {
     abort();
   }
 
-  void __ceph_assert_warn(const char *assertion, const char *file,
-                         int line, const char *func)
+  [[gnu::cold]] void __ceph_assert_warn(const char *assertion,
+                                       const char *file,
+                                       int line, const char *func)
   {
     char buf[8096];
     snprintf(buf, sizeof(buf),