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| author | Gustavo Zacarias <gustavo@zacarias.com.ar> | 2014-10-07 11:09:04 -0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2014-10-10 10:38:38 +0200 |
| commit | 05499d865f061c258ef2a15b1ad5b650c991371a (patch) | |
| tree | 0497561ebc867ee9d022b30a5748ddc72094a3e2 /kerncompat.h | |
| parent | cb37bf83cc583dfe1e22344049a649b363228509 (diff) | |
| download | btrfs-progs-05499d865f061c258ef2a15b1ad5b650c991371a.tar.gz | |
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 <gustavo@zacarias.com.ar>
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'kerncompat.h')
| -rw-r--r-- | kerncompat.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kerncompat.h b/kerncompat.h index 19c7fa5..889d94c 100644 --- a/kerncompat.h +++ b/kerncompat.h @@ -29,7 +29,9 @@ #include <stddef.h> #include <linux/types.h> #include <stdint.h> +#ifndef BTRFS_DISABLE_BACKTRACE #include <execinfo.h> +#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); \ |