From 05499d865f061c258ef2a15b1ad5b650c991371a Mon Sep 17 00:00:00 2001 From: Gustavo Zacarias Date: Tue, 7 Oct 2014 11:09:04 -0300 Subject: btrfs-progs: add option to disable backtrace usage This commit adds the support for a make variable named "DISABLE_BACKTRACE" which allows to disable the support for backtrace() usage on ASSERT(), BUG() and BUG_ON() calls. This is useful because some alternative C libraries like uClibc have optional support for backtrace() which is rarely built when debugging isn't taking place. Signed-off-by: Gustavo Zacarias Signed-off-by: David Sterba --- kerncompat.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'kerncompat.h') diff --git a/kerncompat.h b/kerncompat.h index 19c7fa5..889d94c 100644 --- a/kerncompat.h +++ b/kerncompat.h @@ -29,7 +29,9 @@ #include #include #include +#ifndef BTRFS_DISABLE_BACKTRACE #include +#endif #define ptr_to_u64(x) ((u64)(uintptr_t)x) #define u64_to_ptr(x) ((void *)(uintptr_t)x) @@ -55,6 +57,7 @@ #define ULONG_MAX (~0UL) #endif +#ifndef BTRFS_DISABLE_BACKTRACE #define MAX_BACKTRACE 16 static inline void print_trace(void) { @@ -81,6 +84,9 @@ static inline void assert_trace(const char *assertion, const char *filename, } #define BUG() assert_trace(NULL, __FILE__, __func__, __LINE__, 0) +#else +#define BUG() assert(0) +#endif #ifdef __CHECKER__ #define __force __attribute__((force)) @@ -264,10 +270,19 @@ static inline long IS_ERR(const void *ptr) #define kstrdup(x, y) strdup(x) #define kfree(x) free(x) +#ifndef BTRFS_DISABLE_BACKTRACE #define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, !(c)) +#else +#define BUG_ON(c) assert(!(c)) +#endif #define WARN_ON(c) BUG_ON(c) + +#ifndef BTRFS_DISABLE_BACKTRACE #define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c)) +#else +#define ASSERT(c) assert(c) +#endif #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ -- cgit v1.2.1