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signal: Introduce TRAP_PERF si_code and si_perf to siginfo

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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
This commit is contained in:
Marco Elver
2021-04-08 12:36:00 +02:00
committed by Peter Zijlstra
parent 2e498d0a74
commit fb6cc127e0
8 changed files with 33 additions and 3 deletions
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3
arch/m68k/kernel/signal.c
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@@ -622,6 +622,9 @@ static inline void siginfo_build_tests(void)
/* _sigfault._addr_pkey */
BUILD_BUG_ON(offsetof(siginfo_t, si_pkey) != 0x12);
/* _sigfault._perf */
BUILD_BUG_ON(offsetof(siginfo_t, si_perf) != 0x10);
/* _sigpoll */
BUILD_BUG_ON(offsetof(siginfo_t, si_band) != 0x0c);
BUILD_BUG_ON(offsetof(siginfo_t, si_fd) != 0x10);