summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorArnaldo Carvalho de Melo <acme@redhat.com>2020-12-17 15:01:08 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-12-18 17:32:28 -0300
commitd6dbfceec5dd41becbe8c47c402240925d31036a (patch)
tree67de74567241131eb5bb51b39e4267b8bfa0b3b5
parent4a443a51776ca9847942523cf987a330894d3a31 (diff)
tools headers UAPI: Sync linux/prctl.h with the kernel sources
To pick a new prctl introduced in: 1446e1df9eb183fd ("kernel: Implement selective syscall userspace redirection") That results in: $ tools/perf/trace/beauty/prctl_option.sh > before $ cp include/uapi/linux/prctl.h tools/include/uapi/linux/prctl.h $ tools/perf/trace/beauty/prctl_option.sh > after $ diff -u before after --- before 2020-12-17 15:00:42.012537367 -0300 +++ after 2020-12-17 15:00:49.832699463 -0300 @@ -53,6 +53,7 @@ [56] = "GET_TAGGED_ADDR_CTRL", [57] = "SET_IO_FLUSHER", [58] = "GET_IO_FLUSHER", + [59] = "SET_SYSCALL_USER_DISPATCH", }; static const char *prctl_set_mm_options[] = { [1] = "START_CODE", $ Now users can do: # perf trace -e syscalls:sys_enter_prctl --filter "option==SET_SYSCALL_USER_DISPATCH" ^C# # trace -v -e syscalls:sys_enter_prctl --filter "option==SET_SYSCALL_USER_DISPATCH" New filter for syscalls:sys_enter_prctl: (option==0x3b) && (common_pid != 5519 && common_pid != 3404) ^C# And also when prctl appears in a session, its options will be translated to the string. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Gabriel Krisman Bertazi <krisman@collabora.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/include/uapi/linux/prctl.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/prctl.h b/tools/include/uapi/linux/prctl.h
index 7f0827705c9a..90deb41c8a34 100644
--- a/tools/include/uapi/linux/prctl.h
+++ b/tools/include/uapi/linux/prctl.h
@@ -247,4 +247,9 @@ struct prctl_mm_map {
#define PR_SET_IO_FLUSHER 57
#define PR_GET_IO_FLUSHER 58
+/* Dispatch syscalls to a userspace handler */
+#define PR_SET_SYSCALL_USER_DISPATCH 59
+# define PR_SYS_DISPATCH_OFF 0
+# define PR_SYS_DISPATCH_ON 1
+
#endif /* _LINUX_PRCTL_H */