/* * Copyright 2015, Cyril Bur, IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * This test attempts to see if the VSX registers change across preemption. * There is no way to be sure preemption happened so this test just * uses many threads and a long wait. As such, a successful test * doesn't mean much but a failure is bad. */ #include #include #include #include #include #include #include #include #include #include "utils.h" /* Time to wait for workers to get preempted (seconds) */ #define PREEMPT_TIME 20 /* * Factor by which to multiply number of online CPUs for total number of * worker threads */ #define THREAD_FACTOR 8 /* * Ensure there is twice the number of non-volatile VMX regs! * check_vmx() is going to use the other half as space to put the live * registers before calling vsx_memcmp() */ __thread vector int varray[24] = { {1, 2, 3, 4 }, {5, 6, 7, 8 }, {9, 10,11,12}, {13,14,15,16}, {17,18,19,20}, {21,22,23,24}, {25,26,27,28}, {29,30,31,32}, {33,34,35,36}, {37,38,39,40}, {41,42,43,44}, {45,46,47,48} }; int threads_starting; int running; extern long preempt_vsx(vector int *varray, int *threads_starting, int *running); long vsx_memcmp(vector int *a) { vector int zero = {0, 0, 0, 0}; int i; FAIL_IF(a != varray); for(i = 0; i < 12; i++) { if (memcmp(&a[i + 12], &zero, sizeof(vector int)) == 0) { fprintf(stderr, "Detected zero from the VSX reg %d\n", i + 12); return 2; } } if (memcmp(a, &a[12], 12 * sizeof(vector int))) { long *p = (long *)a; fprintf(stderr, "VSX mismatch\n"); for (i = 0; i < 24; i=i+2) fprintf(stderr, "%d: 0x%08lx%08lx | 0x%08lx%08lx\n", i/2 + i%2 + 20, p[i], p[i + 1], p[i + 24], p[i + 25]); return 1; } return 0; } void *preempt_vsx_c(void *p) { int i, j; long rc; srand(pthread_self()); for (i = 0; i < 12; i++) for (j = 0; j < 4; j++) { varray[i][j] = rand(); /* Don't want zero because it hides kernel problems */ if (varray[i][j] == 0) j--; } rc = preempt_vsx(varray, &threads_starting, &running); if (rc == 2) fprintf(stderr, "Caught zeros in VSX compares\n"); return (void *)rc; } int test_preempt_vsx(void) { int i, rc, threads; pthread_t *tids; threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR; tids = malloc(threads * sizeof(pthread_t)); FAIL_IF(!tids); running = true; threads_starting = threads; for (i = 0; i < threads; i++) { rc = pthread_create(&tids[i], NULL, preempt_vsx_c, NULL); FAIL_IF(rc); } setbuf(stdout, NULL); /* Not really nessesary but nice to wait for every thread to start */ printf("\tWaiting for %d workers to start...", threads_starting); while(threads_starting) asm volatile("": : :"memory"); printf("done\n"); printf("\tWaiting for %d seconds to let some workers get preempted...", PREEMPT_TIME); sleep(PREEMPT_TIME); printf("done\n"); printf("\tStopping workers..."); /* * Working are checking this value every loop. In preempt_vsx 'cmpwi r5,0; bne 2b'. * r5 will have loaded the value of running. */ running = 0; for (i = 0; i < threads; i++) { void *rc_p; pthread_join(tids[i], &rc_p); /* * Harness will say the fail was here, look at why preempt_vsx * returned */ if ((long) rc_p) printf("oops\n"); FAIL_IF((long) rc_p); } printf("done\n"); return 0; } int main(int argc, char *argv[]) { return test_harness(test_preempt_vsx, "vsx_preempt"); } lock/alphascale,asm9260.h?h=nds-private-remove&id=1f3d62090d3ba4d0c14e5271be87812fc577b197'>alphascale,asm9260.h2695log plain -rw-r--r--at91.h751log plain -rw-r--r--ath79-clk.h479log plain -rw-r--r--axis,artpec6-clkctrl.h1112log plain -rw-r--r--bcm-cygnus.h3135log plain -rw-r--r--bcm-ns2.h2915log plain -rw-r--r--bcm-nsp.h2148log plain -rw-r--r--bcm21664.h1984log plain -rw-r--r--bcm281xx.h2456log plain -rw-r--r--bcm2835-aux.h635log plain -rw-r--r--bcm2835.h1962log plain -rw-r--r--berlin2.h1034log plain -rw-r--r--berlin2q.h695log plain -rw-r--r--clps711x-clock.h718log plain -rw-r--r--efm32-cmu.h1112log plain -rw-r--r--exynos-audss-clk.h597log plain -rw-r--r--exynos3250.h9083log plain -rw-r--r--exynos4.h8284log plain -rw-r--r--exynos4415.h9828log plain -rw-r--r--exynos5250.h4616log plain -rw-r--r--exynos5260-clk.h14876log plain -rw-r--r--exynos5410.h1689log plain -rw-r--r--exynos5420.h6857log plain -rw-r--r--exynos5433.h45372log plain -rw-r--r--exynos5440.h1141log plain -rw-r--r--exynos7-clk.h5281log plain -rw-r--r--gxbb-aoclkc.h2866log plain -rw-r--r--gxbb-clkc.h592log plain -rw-r--r--hi3516cv300-clock.h1668log plain -rw-r--r--hi3519-clock.h1328log plain -rw-r--r--hi3620-clock.h4496log plain -rw-r--r--hi6220-clock.h4508log plain -rw-r--r--hip04-clock.h1137log plain -rw-r--r--histb-clock.h2012log plain -rw-r--r--hix5hd2-clock.h2415log plain -rw-r--r--imx1-clock.h1055log plain -rw-r--r--imx21-clock.h2461log plain -rw-r--r--imx27-clock.h3494log plain -rw-r--r--imx5-clock.h7212log plain -rw-r--r--imx6qdl-clock.h9593log plain -rw-r--r--imx6sl-clock.h5849log plain -rw-r--r--imx6sx-clock.h9099log plain -rw-r--r--imx6ul-clock.h8203log plain -rw-r--r--imx7d-clock.h15974log plain -rw-r--r--jz4740-cgu.h1028log plain -rw-r--r--jz4780-cgu.h2470log plain -rw-r--r--lpc18xx-ccu.h2134log plain -rw-r--r--lpc18xx-cgu.h1142log plain -rw-r--r--lpc32xx-clock.h1633log plain -rw-r--r--lsi,axm5516-clks.h974log plain -rw-r--r--marvell,mmp2.h2022log plain -rw-r--r--marvell,pxa168.h1654log plain -rw-r--r--marvell,pxa1928.h1535log plain -rw-r--r--marvell,pxa910.h1598log plain -rw-r--r--maxim,max77620.h632log plain -rw-r--r--maxim,max77686.h648log plain -rw-r--r--maxim,max77802.h630log plain -rw-r--r--meson8b-clkc.h523log plain -rw-r--r--microchip,pic32-clock.h1150log plain -rw-r--r--mpc512x-clock.h2236log plain -rw-r--r--mt2701-clk.h13832log plain -rw-r--r--mt8135-clk.h5641log plain -rw-r--r--mt8173-clk.h9293log plain -rw-r--r--oxsemi,ox810se.h1002log plain -rw-r--r--oxsemi,ox820.h1203log plain -rw-r--r--pistachio-clk.h4863log plain -rw-r--r--pxa-clock.h1715log plain -rw-r--r--qcom,gcc-apq8084.h12872log plain -rw-r--r--qcom,gcc-ipq4019.h5423log plain -rw-r--r--qcom,gcc-ipq806x.h8574log plain -rw-r--r--qcom,gcc-mdm9615.h9497log plain -rw-r--r--qcom,gcc-msm8660.h7932log plain -rw-r--r--qcom,gcc-msm8916.h6190log plain -rw-r--r--qcom,gcc-msm8960.h9342log plain -rw-r--r--qcom,gcc-msm8974.h12340log plain -rw-r--r--qcom,gcc-msm8994.h4858log plain -rw-r--r--qcom,gcc-msm8996.h12575log plain -rw-r--r--qcom,lcc-ipq806x.h899log plain -rw-r--r--qcom,lcc-mdm9615.h1701log plain -rw-r--r--qcom,lcc-msm8960.h1616log plain -rw-r--r--qcom,mmcc-apq8084.h5722log plain -rw-r--r--qcom,mmcc-msm8960.h4109log plain -rw-r--r--qcom,mmcc-msm8974.h5223log plain -rw-r--r--qcom,mmcc-msm8996.h9403log plain -rw-r--r--qcom,rpmcc.h2101log plain -rw-r--r--r7s72100-clock.h1218log plain -rw-r--r--r8a73a4-clock.h1596log plain -rw-r--r--r8a7740-clock.h1992log plain -rw-r--r--r8a7743-cpg-mssr.h1269log plain -rw-r--r--r8a7745-cpg-mssr.h1298log plain -rw-r--r--r8a7778-clock.h1855log plain -rw-r--r--r8a7779-clock.h1647log plain -rw-r--r--r8a7790-clock.h4367log plain -rw-r--r--r8a7791-clock.h4388log plain -rw-r--r--r8a7792-clock.h2562log plain -rw-r--r--r8a7793-clock.h4561log plain -rw-r--r--r8a7794-clock.h3679log plain -rw-r--r--r8a7795-cpg-mssr.h1890log plain -rw-r--r--r8a7796-cpg-mssr.h2066log plain -rw-r--r--renesas-cpg-mssr.h542log plain -rw-r--r--rk1108-cru.h6605log plain -rw-r--r--rk3036-cru.h4584log plain -rw-r--r--rk3066a-cru.h1068log plain -rw-r--r--rk3188-cru-common.h6105log plain -rw-r--r--rk3188-cru.h1435log plain