kselftest/arm64: Install signal handlers before output in FP stress tests

To interface more robustly with other processes install the signal handers
in the floating point stress tests before we produce any output, this
means that a parent process can know that if it has seen any output from
the test then the test is ready to handle incoming signals.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220906220056.820295-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S
index f0f9219..918d048 100644 (file)
--- a/tools/testing/selftests/arm64/fp/fpsimd-test.S
+++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S
@@ -216,6 +216,30 @@ endfunction
 .globl _start
 function _start
 _start:
+       mov     x23, #0         // signal count
+
+       mov     w0, #SIGINT
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGTERM
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGUSR1
+       adr     x1, irritator_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
+       mov     w0, #SIGUSR2
+       adr     x1, tickle_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
        // Sanity-check and report the vector length
 
        mov     x19, #128
@@ -246,30 +270,6 @@ _start:
        mov     x0, x20
        bl      putdecn
 
-       mov     x23, #0         // Irritation signal count
-
-       mov     w0, #SIGINT
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGTERM
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGUSR1
-       adr     x1, irritator_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
-       mov     w0, #SIGUSR2
-       adr     x1, tickle_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
        mov     x22, #0         // generation number, increments per iteration
 .Ltest_loop:
 

diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S
index 79c56e6..2a18cb4 100644 (file)
--- a/tools/testing/selftests/arm64/fp/sve-test.S
+++ b/tools/testing/selftests/arm64/fp/sve-test.S
@@ -379,6 +379,30 @@ endfunction
 .globl _start
 function _start
 _start:
+       mov     x23, #0         // Irritation signal count
+
+       mov     w0, #SIGINT
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGTERM
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGUSR1
+       adr     x1, irritator_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
+       mov     w0, #SIGUSR2
+       adr     x1, tickle_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
 #ifdef SSVE
        puts    "Streaming mode "
        smstart_sm
@@ -414,30 +438,6 @@ _start:
        mov     x0, x20
        bl      putdecn
 
-       mov     x23, #0         // Irritation signal count
-
-       mov     w0, #SIGINT
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGTERM
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGUSR1
-       adr     x1, irritator_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
-       mov     w0, #SIGUSR2
-       adr     x1, tickle_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
 #ifdef SSVE
        smstart_sm              // syscalls will have exited streaming mode
 #endif

diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S
index 9018391..53c54af 100644 (file)
--- a/tools/testing/selftests/arm64/fp/za-test.S
+++ b/tools/testing/selftests/arm64/fp/za-test.S
@@ -232,6 +232,30 @@ endfunction
 .globl _start
 function _start
 _start:
+       mov     x23, #0         // signal count
+
+       mov     w0, #SIGINT
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGTERM
+       adr     x1, terminate_handler
+       mov     w2, #SA_SIGINFO
+       bl      setsignal
+
+       mov     w0, #SIGUSR1
+       adr     x1, irritator_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
+       mov     w0, #SIGUSR2
+       adr     x1, tickle_handler
+       mov     w2, #SA_SIGINFO
+       orr     w2, w2, #SA_NODEFER
+       bl      setsignal
+
        puts    "Streaming mode "
        smstart_za
 
@@ -264,30 +288,6 @@ _start:
        mov     x0, x20
        bl      putdecn
 
-       mov     x23, #0         // Irritation signal count
-
-       mov     w0, #SIGINT
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGTERM
-       adr     x1, terminate_handler
-       mov     w2, #SA_SIGINFO
-       bl      setsignal
-
-       mov     w0, #SIGUSR1
-       adr     x1, irritator_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
-       mov     w0, #SIGUSR2
-       adr     x1, tickle_handler
-       mov     w2, #SA_SIGINFO
-       orr     w2, w2, #SA_NODEFER
-       bl      setsignal
-
        mov     x22, #0         // generation number, increments per iteration
 .Ltest_loop:
        rdsvl   0, 8