diff options
| author | Brian Behlendorf <[email protected]> | 2014-09-25 15:15:45 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-09-30 10:46:55 -0700 |
| commit | aa0ac7caa438bf3981456c559d4224be104ccc7d (patch) | |
| tree | f3ddd427d47ad3d28535be3067bbdc4c9f239970 /include | |
| parent | cb08f063074a5363810a39775fd90a4d214c5d87 (diff) | |
Make user stack limit configurable
To aid in detecting and debugging stack overflow issues make the
user space stack limit configurable via a new ZFS_STACK_SIZE
environment variable. The value assigned to ZFS_STACK_SIZE will
be used as the default stack size in bytes.
Because this is mainly useful as a debugging aid in conjunction
with ztest the stack limit is disabled by default. See the ztest(1)
man page for additional details on using the ZFS_STACK_SIZE
environment variable.
Signed-off-by: Brian Behlendorf <[email protected]>
Signed-off-by: Ned Bass <[email protected]>
Closes #2743
Issue #2293
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/zfs_context.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/include/sys/zfs_context.h b/include/sys/zfs_context.h index bbb8a0463..f26c827dc 100644 --- a/include/sys/zfs_context.h +++ b/include/sys/zfs_context.h @@ -203,16 +203,17 @@ extern void vpanic(const char *, va_list); #else #define SET_ERROR(err) (err) #endif + /* - * Threads + * Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack + * size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be + * large enough for the expected stack depth while small enough to avoid + * exhausting address space with high thread counts. */ #define TS_MAGIC 0x72f158ab4261e538ull #define TS_RUN 0x00000002 -#ifdef __linux__ -#define STACK_SIZE 8192 /* Linux x86 and amd64 */ -#else -#define STACK_SIZE 24576 /* Solaris */ -#endif +#define TS_STACK_MIN PTHREAD_STACK_MIN +#define TS_STACK_MAX (256 * 1024) /* in libzpool, p0 exists only to have its address taken */ typedef struct proc { |