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authorAndrea Arcangeli <andrea@cpushare.com>2007-07-16 02:41:33 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 12:05:50 -0400
commitcf99abace7e07dd8491e7093a9a9ef11d48838ed (patch)
tree3b7cfd7c76c2c43e6ae3fdaaff3a50a752072424 /include/linux/seccomp.h
parent1d9d02feeee89e9132034d504c9a45eeaf618a3d (diff)
make seccomp zerocost in schedule
This follows a suggestion from Chuck Ebbert on how to make seccomp absolutely zerocost in schedule too. The only remaining footprint of seccomp is in terms of the bzImage size that becomes a few bytes (perhaps even a few kbytes) larger, measure it if you care in the embedded. Signed-off-by: Andrea Arcangeli <andrea@cpushare.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/seccomp.h')
-rw-r--r--include/linux/seccomp.h10
1 files changed, 0 insertions, 10 deletions
diff --git a/include/linux/seccomp.h b/include/linux/seccomp.h
index d708974dbfe3..262a8dccfa81 100644
--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -16,11 +16,6 @@ static inline void secure_computing(int this_syscall)
16 __secure_computing(this_syscall); 16 __secure_computing(this_syscall);
17} 17}
18 18
19static inline int has_secure_computing(struct thread_info *ti)
20{
21 return unlikely(test_ti_thread_flag(ti, TIF_SECCOMP));
22}
23
24extern long prctl_get_seccomp(void); 19extern long prctl_get_seccomp(void);
25extern long prctl_set_seccomp(unsigned long); 20extern long prctl_set_seccomp(unsigned long);
26 21
@@ -29,11 +24,6 @@ extern long prctl_set_seccomp(unsigned long);
29typedef struct { } seccomp_t; 24typedef struct { } seccomp_t;
30 25
31#define secure_computing(x) do { } while (0) 26#define secure_computing(x) do { } while (0)
32/* static inline to preserve typechecking */
33static inline int has_secure_computing(struct thread_info *ti)
34{
35 return 0;
36}
37 27
38static inline long prctl_get_seccomp(void) 28static inline long prctl_get_seccomp(void)
39{ 29{