Commit 6e8c5bbd authored by Miguel Ojeda's avatar Miguel Ojeda
Browse files

kallsyms: add static relationship between `KSYM_NAME_LEN{,_BUFFER}` 



This adds a static assert to ensure `KSYM_NAME_LEN_BUFFER`
gets updated when `KSYM_NAME_LEN` changes.

The relationship used is one that keeps the new size (512+1)
close to the original buffer size (500).

Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: default avatarBoqun Feng <boqun.feng@gmail.com>
Signed-off-by: default avatarBoqun Feng <boqun.feng@gmail.com>
Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent b471927e

scripts/kallsyms.c

+12 −2
Original line number Diff line number Diff line
@@ -32,8 +32,18 @@ 


#define KSYM_NAME_LEN		128



/* A substantially bigger size than the current maximum. */

#define KSYM_NAME_LEN_BUFFER	499

/*

 * A substantially bigger size than the current maximum.

 *

 * It cannot be defined as an expression because it gets stringified

 * for the fscanf() format string. Therefore, a _Static_assert() is

 * used instead to maintain the relationship with KSYM_NAME_LEN.

 */

#define KSYM_NAME_LEN_BUFFER	512

_Static_assert(

	KSYM_NAME_LEN_BUFFER == KSYM_NAME_LEN * 4,

	"Please keep KSYM_NAME_LEN_BUFFER in sync with KSYM_NAME_LEN"

);



struct sym_entry {

	unsigned long long addr;