summaryrefslogtreecommitdiff
path: root/include/uapi/asm-generic
diff options
context:
space:
mode:
authorMarco Elver <elver@google.com>2021-04-08 13:36:00 +0300
committerPeter Zijlstra <peterz@infradead.org>2021-04-16 17:32:41 +0300
commitfb6cc127e0b6e629252cdd0f77d5a1f49db95b92 (patch)
treed87b4f9b27913150809daadbb6674929832762ba /include/uapi/asm-generic
parent2e498d0a74e5b88a6689ae1b811f247f91ff188e (diff)
downloadlinux-fb6cc127e0b6e629252cdd0f77d5a1f49db95b92.tar.xz
signal: Introduce TRAP_PERF si_code and si_perf to siginfo
Introduces the TRAP_PERF si_code, and associated siginfo_t field si_perf. These will be used by the perf event subsystem to send signals (if requested) to the task where an event occurred. Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Acked-by: Arnd Bergmann <arnd@arndb.de> # asm-generic Link: https://lkml.kernel.org/r/20210408103605.1676875-6-elver@google.com
Diffstat (limited to 'include/uapi/asm-generic')
-rw-r--r--include/uapi/asm-generic/siginfo.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index d2597000407a..d0bb9125c853 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -91,6 +91,8 @@ union __sifields {
char _dummy_pkey[__ADDR_BND_PKEY_PAD];
__u32 _pkey;
} _addr_pkey;
+ /* used when si_code=TRAP_PERF */
+ __u64 _perf;
};
} _sigfault;
@@ -155,6 +157,7 @@ typedef struct siginfo {
#define si_lower _sifields._sigfault._addr_bnd._lower
#define si_upper _sifields._sigfault._addr_bnd._upper
#define si_pkey _sifields._sigfault._addr_pkey._pkey
+#define si_perf _sifields._sigfault._perf
#define si_band _sifields._sigpoll._band
#define si_fd _sifields._sigpoll._fd
#define si_call_addr _sifields._sigsys._call_addr
@@ -253,7 +256,8 @@ typedef struct siginfo {
#define TRAP_BRANCH 3 /* process taken branch trap */
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
#define TRAP_UNK 5 /* undiagnosed trap */
-#define NSIGTRAP 5
+#define TRAP_PERF 6 /* perf event with sigtrap=1 */
+#define NSIGTRAP 6
/*
* There is an additional set of SIGTRAP si_codes used by ptrace