diff options
Diffstat (limited to 'include/trace.h')
| -rw-r--r-- | include/trace.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/trace.h b/include/trace.h index 2be8d81b51..763d6d1255 100644 --- a/include/trace.h +++ b/include/trace.h @@ -17,14 +17,16 @@ enum { * * The value here assumes a minimum instruction size of 4 bytes, * or that instructions are 2 bytes but there are at least 2 of - * them in every function. + * them in every function. Given that each function needs a call to + * __cyg_profile_func_enter() and __cyg_profile_func_exit() as well, + * we cannot have functions smaller that 16 bytes. * * Increasing this value reduces the number of functions we can * resolve, but reduces the size of the uintptr_t array used for * our function list, which is the length of the code divided by * this value. */ - FUNC_SITE_SIZE = 4, /* distance between function sites */ + FUNC_SITE_SIZE = 16, /* distance between function sites */ TRACE_VERSION = 1, }; |