Commit-ID: d9744f940923ea341a289d1920a55e3a3de7fc9a
Gitweb: https://git.kernel.org/tip/d9744f940923ea341a289d1920a55e3a3de7fc9a
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 27 Nov 2017 12:11:02 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 28 Nov 2017 14:31:30 -0300
tools headers: Synchronize prctl.h ABI header
To pick up changes from:
2d2123bc7c7f ("arm64/sve: Add prctl controls for userspace vector length management")
7582e22038a2 ("arm64/sve: Backend logic for setting the vector length")
That showed a limitation of the regexp used in tools/perf/trace/beauty/prctl_option.sh,
that matches only PR_{SET,GET}_, but should match a few more, like
PR_MPX_*, PR_CAP_* and the one added by the above commit, PR_SVE_SET_*.
This silences this warning when building tools/perf:
Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h'
Support for those extra prctl options should be left for the next merge
window tho.
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Dave Martin <Dave.Martin@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Link: https://lkml.kernel.org/n/tip-r52dsyuzy04qzqyfcifjs35t@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/include/uapi/linux/prctl.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/include/uapi/linux/prctl.h b/tools/include/uapi/linux/prctl.h
index b640071..af5f8c2 100644
--- a/tools/include/uapi/linux/prctl.h
+++ b/tools/include/uapi/linux/prctl.h
@@ -198,4 +198,13 @@ struct prctl_mm_map {
# define PR_CAP_AMBIENT_LOWER 3
# define PR_CAP_AMBIENT_CLEAR_ALL 4
+/* arm64 Scalable Vector Extension controls */
+/* Flag values must be kept in sync with ptrace NT_ARM_SVE interface */
+#define PR_SVE_SET_VL 50 /* set task vector length */
+# define PR_SVE_SET_VL_ONEXEC (1 << 18) /* defer effect until exec */
+#define PR_SVE_GET_VL 51 /* get task vector length */
+/* Bits common to PR_SVE_SET_VL and PR_SVE_GET_VL */
+# define PR_SVE_VL_LEN_MASK 0xffff
+# define PR_SVE_VL_INHERIT (1 << 17) /* inherit across exec */
+
#endif /* _LINUX_PRCTL_H */
--
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