From 34ff636f322c6d5e4f0a52338fa63a7dff09a495 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sat, 18 Jul 2026 13:15:36 -0400 Subject: scftorture: Count single_rpc offline failures in statistics output scf_torture_stats_print() aggregates each invoker thread's counters into a local scf_statistics structure before printing, but the n_single_rpc_ofl field is missing from the aggregation loop. As a result, the "single_rpc_ofl" value printed in the statistics line is always zero, even when smp_call_function_single() invocations for the RPC test have failed due to offline CPUs and been counted by the invoker threads. Add the missing accumulation so that the printed value reflects the actual counts. Signed-off-by: Joel Fernandes Signed-off-by: Paul E. McKenney --- arch/mips/math-emu/me-debugfs.c | 353 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 353 insertions(+) create mode 100644 arch/mips/math-emu/me-debugfs.c (limited to 'arch/mips/math-emu/me-debugfs.c') diff --git a/arch/mips/math-emu/me-debugfs.c b/arch/mips/math-emu/me-debugfs.c new file mode 100644 index 000000000..aeddf7aec --- /dev/null +++ b/arch/mips/math-emu/me-debugfs.c @@ -0,0 +1,353 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats); + +static int fpuemu_stat_get(void *data, u64 *val) +{ + int cpu; + unsigned long sum = 0; + + for_each_online_cpu(cpu) { + struct mips_fpu_emulator_stats *ps; + local_t *pv; + + ps = &per_cpu(fpuemustats, cpu); + pv = (void *)ps + (unsigned long)data; + sum += local_read(pv); + } + *val = sum; + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n"); + +/* + * Used to obtain names for a debugfs instruction counter, given field name + * in fpuemustats structure. For example, for input "cmp_sueq_d", the output + * would be "cmp.sueq.d". This is needed since dots are not allowed to be + * used in structure field names, and are, on the other hand, desired to be + * used in debugfs item names to be clearly associated to corresponding + * MIPS FPU instructions. + */ +static void adjust_instruction_counter_name(char *out_name, char *in_name, size_t len) +{ + int i = 0; + + strscpy(out_name, in_name, len); + while (in_name[i] != '\0') { + if (out_name[i] == '_') + out_name[i] = '.'; + i++; + } +} + +static int fpuemustats_clear_show(struct seq_file *s, void *unused) +{ + __this_cpu_write((fpuemustats).emulated, 0); + __this_cpu_write((fpuemustats).loads, 0); + __this_cpu_write((fpuemustats).stores, 0); + __this_cpu_write((fpuemustats).branches, 0); + __this_cpu_write((fpuemustats).cp1ops, 0); + __this_cpu_write((fpuemustats).cp1xops, 0); + __this_cpu_write((fpuemustats).errors, 0); + __this_cpu_write((fpuemustats).ieee754_inexact, 0); + __this_cpu_write((fpuemustats).ieee754_underflow, 0); + __this_cpu_write((fpuemustats).ieee754_overflow, 0); + __this_cpu_write((fpuemustats).ieee754_zerodiv, 0); + __this_cpu_write((fpuemustats).ieee754_invalidop, 0); + __this_cpu_write((fpuemustats).ds_emul, 0); + + __this_cpu_write((fpuemustats).abs_s, 0); + __this_cpu_write((fpuemustats).abs_d, 0); + __this_cpu_write((fpuemustats).add_s, 0); + __this_cpu_write((fpuemustats).add_d, 0); + __this_cpu_write((fpuemustats).bc1eqz, 0); + __this_cpu_write((fpuemustats).bc1nez, 0); + __this_cpu_write((fpuemustats).ceil_w_s, 0); + __this_cpu_write((fpuemustats).ceil_w_d, 0); + __this_cpu_write((fpuemustats).ceil_l_s, 0); + __this_cpu_write((fpuemustats).ceil_l_d, 0); + __this_cpu_write((fpuemustats).class_s, 0); + __this_cpu_write((fpuemustats).class_d, 0); + __this_cpu_write((fpuemustats).cmp_af_s, 0); + __this_cpu_write((fpuemustats).cmp_af_d, 0); + __this_cpu_write((fpuemustats).cmp_eq_s, 0); + __this_cpu_write((fpuemustats).cmp_eq_d, 0); + __this_cpu_write((fpuemustats).cmp_le_s, 0); + __this_cpu_write((fpuemustats).cmp_le_d, 0); + __this_cpu_write((fpuemustats).cmp_lt_s, 0); + __this_cpu_write((fpuemustats).cmp_lt_d, 0); + __this_cpu_write((fpuemustats).cmp_ne_s, 0); + __this_cpu_write((fpuemustats).cmp_ne_d, 0); + __this_cpu_write((fpuemustats).cmp_or_s, 0); + __this_cpu_write((fpuemustats).cmp_or_d, 0); + __this_cpu_write((fpuemustats).cmp_ueq_s, 0); + __this_cpu_write((fpuemustats).cmp_ueq_d, 0); + __this_cpu_write((fpuemustats).cmp_ule_s, 0); + __this_cpu_write((fpuemustats).cmp_ule_d, 0); + __this_cpu_write((fpuemustats).cmp_ult_s, 0); + __this_cpu_write((fpuemustats).cmp_ult_d, 0); + __this_cpu_write((fpuemustats).cmp_un_s, 0); + __this_cpu_write((fpuemustats).cmp_un_d, 0); + __this_cpu_write((fpuemustats).cmp_une_s, 0); + __this_cpu_write((fpuemustats).cmp_une_d, 0); + __this_cpu_write((fpuemustats).cmp_saf_s, 0); + __this_cpu_write((fpuemustats).cmp_saf_d, 0); + __this_cpu_write((fpuemustats).cmp_seq_s, 0); + __this_cpu_write((fpuemustats).cmp_seq_d, 0); + __this_cpu_write((fpuemustats).cmp_sle_s, 0); + __this_cpu_write((fpuemustats).cmp_sle_d, 0); + __this_cpu_write((fpuemustats).cmp_slt_s, 0); + __this_cpu_write((fpuemustats).cmp_slt_d, 0); + __this_cpu_write((fpuemustats).cmp_sne_s, 0); + __this_cpu_write((fpuemustats).cmp_sne_d, 0); + __this_cpu_write((fpuemustats).cmp_sor_s, 0); + __this_cpu_write((fpuemustats).cmp_sor_d, 0); + __this_cpu_write((fpuemustats).cmp_sueq_s, 0); + __this_cpu_write((fpuemustats).cmp_sueq_d, 0); + __this_cpu_write((fpuemustats).cmp_sule_s, 0); + __this_cpu_write((fpuemustats).cmp_sule_d, 0); + __this_cpu_write((fpuemustats).cmp_sult_s, 0); + __this_cpu_write((fpuemustats).cmp_sult_d, 0); + __this_cpu_write((fpuemustats).cmp_sun_s, 0); + __this_cpu_write((fpuemustats).cmp_sun_d, 0); + __this_cpu_write((fpuemustats).cmp_sune_s, 0); + __this_cpu_write((fpuemustats).cmp_sune_d, 0); + __this_cpu_write((fpuemustats).cvt_d_l, 0); + __this_cpu_write((fpuemustats).cvt_d_s, 0); + __this_cpu_write((fpuemustats).cvt_d_w, 0); + __this_cpu_write((fpuemustats).cvt_l_s, 0); + __this_cpu_write((fpuemustats).cvt_l_d, 0); + __this_cpu_write((fpuemustats).cvt_s_d, 0); + __this_cpu_write((fpuemustats).cvt_s_l, 0); + __this_cpu_write((fpuemustats).cvt_s_w, 0); + __this_cpu_write((fpuemustats).cvt_w_s, 0); + __this_cpu_write((fpuemustats).cvt_w_d, 0); + __this_cpu_write((fpuemustats).div_s, 0); + __this_cpu_write((fpuemustats).div_d, 0); + __this_cpu_write((fpuemustats).floor_w_s, 0); + __this_cpu_write((fpuemustats).floor_w_d, 0); + __this_cpu_write((fpuemustats).floor_l_s, 0); + __this_cpu_write((fpuemustats).floor_l_d, 0); + __this_cpu_write((fpuemustats).maddf_s, 0); + __this_cpu_write((fpuemustats).maddf_d, 0); + __this_cpu_write((fpuemustats).max_s, 0); + __this_cpu_write((fpuemustats).max_d, 0); + __this_cpu_write((fpuemustats).maxa_s, 0); + __this_cpu_write((fpuemustats).maxa_d, 0); + __this_cpu_write((fpuemustats).min_s, 0); + __this_cpu_write((fpuemustats).min_d, 0); + __this_cpu_write((fpuemustats).mina_s, 0); + __this_cpu_write((fpuemustats).mina_d, 0); + __this_cpu_write((fpuemustats).mov_s, 0); + __this_cpu_write((fpuemustats).mov_d, 0); + __this_cpu_write((fpuemustats).msubf_s, 0); + __this_cpu_write((fpuemustats).msubf_d, 0); + __this_cpu_write((fpuemustats).mul_s, 0); + __this_cpu_write((fpuemustats).mul_d, 0); + __this_cpu_write((fpuemustats).neg_s, 0); + __this_cpu_write((fpuemustats).neg_d, 0); + __this_cpu_write((fpuemustats).recip_s, 0); + __this_cpu_write((fpuemustats).recip_d, 0); + __this_cpu_write((fpuemustats).rint_s, 0); + __this_cpu_write((fpuemustats).rint_d, 0); + __this_cpu_write((fpuemustats).round_w_s, 0); + __this_cpu_write((fpuemustats).round_w_d, 0); + __this_cpu_write((fpuemustats).round_l_s, 0); + __this_cpu_write((fpuemustats).round_l_d, 0); + __this_cpu_write((fpuemustats).rsqrt_s, 0); + __this_cpu_write((fpuemustats).rsqrt_d, 0); + __this_cpu_write((fpuemustats).sel_s, 0); + __this_cpu_write((fpuemustats).sel_d, 0); + __this_cpu_write((fpuemustats).seleqz_s, 0); + __this_cpu_write((fpuemustats).seleqz_d, 0); + __this_cpu_write((fpuemustats).selnez_s, 0); + __this_cpu_write((fpuemustats).selnez_d, 0); + __this_cpu_write((fpuemustats).sqrt_s, 0); + __this_cpu_write((fpuemustats).sqrt_d, 0); + __this_cpu_write((fpuemustats).sub_s, 0); + __this_cpu_write((fpuemustats).sub_d, 0); + __this_cpu_write((fpuemustats).trunc_w_s, 0); + __this_cpu_write((fpuemustats).trunc_w_d, 0); + __this_cpu_write((fpuemustats).trunc_l_s, 0); + __this_cpu_write((fpuemustats).trunc_l_d, 0); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(fpuemustats_clear); + +static int __init debugfs_fpuemu(void) +{ + struct dentry *fpuemu_debugfs_base_dir; + struct dentry *fpuemu_debugfs_inst_dir; + char name[32]; + + fpuemu_debugfs_base_dir = debugfs_create_dir("fpuemustats", + mips_debugfs_dir); + + debugfs_create_file("fpuemustats_clear", 0444, mips_debugfs_dir, NULL, + &fpuemustats_clear_fops); + +#define FPU_EMU_STAT_OFFSET(m) \ + offsetof(struct mips_fpu_emulator_stats, m) + +#define FPU_STAT_CREATE(m) \ +do { \ + debugfs_create_file(#m, 0444, fpuemu_debugfs_base_dir, \ + (void *)FPU_EMU_STAT_OFFSET(m), \ + &fops_fpuemu_stat); \ +} while (0) + + FPU_STAT_CREATE(emulated); + FPU_STAT_CREATE(loads); + FPU_STAT_CREATE(stores); + FPU_STAT_CREATE(branches); + FPU_STAT_CREATE(cp1ops); + FPU_STAT_CREATE(cp1xops); + FPU_STAT_CREATE(errors); + FPU_STAT_CREATE(ieee754_inexact); + FPU_STAT_CREATE(ieee754_underflow); + FPU_STAT_CREATE(ieee754_overflow); + FPU_STAT_CREATE(ieee754_zerodiv); + FPU_STAT_CREATE(ieee754_invalidop); + FPU_STAT_CREATE(ds_emul); + + fpuemu_debugfs_inst_dir = debugfs_create_dir("instructions", + fpuemu_debugfs_base_dir); + +#define FPU_STAT_CREATE_EX(m) \ +do { \ + adjust_instruction_counter_name(name, #m, sizeof(name)); \ + \ + debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir, \ + (void *)FPU_EMU_STAT_OFFSET(m), \ + &fops_fpuemu_stat); \ +} while (0) + + FPU_STAT_CREATE_EX(abs_s); + FPU_STAT_CREATE_EX(abs_d); + FPU_STAT_CREATE_EX(add_s); + FPU_STAT_CREATE_EX(add_d); + FPU_STAT_CREATE_EX(bc1eqz); + FPU_STAT_CREATE_EX(bc1nez); + FPU_STAT_CREATE_EX(ceil_w_s); + FPU_STAT_CREATE_EX(ceil_w_d); + FPU_STAT_CREATE_EX(ceil_l_s); + FPU_STAT_CREATE_EX(ceil_l_d); + FPU_STAT_CREATE_EX(class_s); + FPU_STAT_CREATE_EX(class_d); + FPU_STAT_CREATE_EX(cmp_af_s); + FPU_STAT_CREATE_EX(cmp_af_d); + FPU_STAT_CREATE_EX(cmp_eq_s); + FPU_STAT_CREATE_EX(cmp_eq_d); + FPU_STAT_CREATE_EX(cmp_le_s); + FPU_STAT_CREATE_EX(cmp_le_d); + FPU_STAT_CREATE_EX(cmp_lt_s); + FPU_STAT_CREATE_EX(cmp_lt_d); + FPU_STAT_CREATE_EX(cmp_ne_s); + FPU_STAT_CREATE_EX(cmp_ne_d); + FPU_STAT_CREATE_EX(cmp_or_s); + FPU_STAT_CREATE_EX(cmp_or_d); + FPU_STAT_CREATE_EX(cmp_ueq_s); + FPU_STAT_CREATE_EX(cmp_ueq_d); + FPU_STAT_CREATE_EX(cmp_ule_s); + FPU_STAT_CREATE_EX(cmp_ule_d); + FPU_STAT_CREATE_EX(cmp_ult_s); + FPU_STAT_CREATE_EX(cmp_ult_d); + FPU_STAT_CREATE_EX(cmp_un_s); + FPU_STAT_CREATE_EX(cmp_un_d); + FPU_STAT_CREATE_EX(cmp_une_s); + FPU_STAT_CREATE_EX(cmp_une_d); + FPU_STAT_CREATE_EX(cmp_saf_s); + FPU_STAT_CREATE_EX(cmp_saf_d); + FPU_STAT_CREATE_EX(cmp_seq_s); + FPU_STAT_CREATE_EX(cmp_seq_d); + FPU_STAT_CREATE_EX(cmp_sle_s); + FPU_STAT_CREATE_EX(cmp_sle_d); + FPU_STAT_CREATE_EX(cmp_slt_s); + FPU_STAT_CREATE_EX(cmp_slt_d); + FPU_STAT_CREATE_EX(cmp_sne_s); + FPU_STAT_CREATE_EX(cmp_sne_d); + FPU_STAT_CREATE_EX(cmp_sor_s); + FPU_STAT_CREATE_EX(cmp_sor_d); + FPU_STAT_CREATE_EX(cmp_sueq_s); + FPU_STAT_CREATE_EX(cmp_sueq_d); + FPU_STAT_CREATE_EX(cmp_sule_s); + FPU_STAT_CREATE_EX(cmp_sule_d); + FPU_STAT_CREATE_EX(cmp_sult_s); + FPU_STAT_CREATE_EX(cmp_sult_d); + FPU_STAT_CREATE_EX(cmp_sun_s); + FPU_STAT_CREATE_EX(cmp_sun_d); + FPU_STAT_CREATE_EX(cmp_sune_s); + FPU_STAT_CREATE_EX(cmp_sune_d); + FPU_STAT_CREATE_EX(cvt_d_l); + FPU_STAT_CREATE_EX(cvt_d_s); + FPU_STAT_CREATE_EX(cvt_d_w); + FPU_STAT_CREATE_EX(cvt_l_s); + FPU_STAT_CREATE_EX(cvt_l_d); + FPU_STAT_CREATE_EX(cvt_s_d); + FPU_STAT_CREATE_EX(cvt_s_l); + FPU_STAT_CREATE_EX(cvt_s_w); + FPU_STAT_CREATE_EX(cvt_w_s); + FPU_STAT_CREATE_EX(cvt_w_d); + FPU_STAT_CREATE_EX(div_s); + FPU_STAT_CREATE_EX(div_d); + FPU_STAT_CREATE_EX(floor_w_s); + FPU_STAT_CREATE_EX(floor_w_d); + FPU_STAT_CREATE_EX(floor_l_s); + FPU_STAT_CREATE_EX(floor_l_d); + FPU_STAT_CREATE_EX(maddf_s); + FPU_STAT_CREATE_EX(maddf_d); + FPU_STAT_CREATE_EX(max_s); + FPU_STAT_CREATE_EX(max_d); + FPU_STAT_CREATE_EX(maxa_s); + FPU_STAT_CREATE_EX(maxa_d); + FPU_STAT_CREATE_EX(min_s); + FPU_STAT_CREATE_EX(min_d); + FPU_STAT_CREATE_EX(mina_s); + FPU_STAT_CREATE_EX(mina_d); + FPU_STAT_CREATE_EX(mov_s); + FPU_STAT_CREATE_EX(mov_d); + FPU_STAT_CREATE_EX(msubf_s); + FPU_STAT_CREATE_EX(msubf_d); + FPU_STAT_CREATE_EX(mul_s); + FPU_STAT_CREATE_EX(mul_d); + FPU_STAT_CREATE_EX(neg_s); + FPU_STAT_CREATE_EX(neg_d); + FPU_STAT_CREATE_EX(recip_s); + FPU_STAT_CREATE_EX(recip_d); + FPU_STAT_CREATE_EX(rint_s); + FPU_STAT_CREATE_EX(rint_d); + FPU_STAT_CREATE_EX(round_w_s); + FPU_STAT_CREATE_EX(round_w_d); + FPU_STAT_CREATE_EX(round_l_s); + FPU_STAT_CREATE_EX(round_l_d); + FPU_STAT_CREATE_EX(rsqrt_s); + FPU_STAT_CREATE_EX(rsqrt_d); + FPU_STAT_CREATE_EX(sel_s); + FPU_STAT_CREATE_EX(sel_d); + FPU_STAT_CREATE_EX(seleqz_s); + FPU_STAT_CREATE_EX(seleqz_d); + FPU_STAT_CREATE_EX(selnez_s); + FPU_STAT_CREATE_EX(selnez_d); + FPU_STAT_CREATE_EX(sqrt_s); + FPU_STAT_CREATE_EX(sqrt_d); + FPU_STAT_CREATE_EX(sub_s); + FPU_STAT_CREATE_EX(sub_d); + FPU_STAT_CREATE_EX(trunc_w_s); + FPU_STAT_CREATE_EX(trunc_w_d); + FPU_STAT_CREATE_EX(trunc_l_s); + FPU_STAT_CREATE_EX(trunc_l_d); + + return 0; +} +arch_initcall(debugfs_fpuemu); -- cgit v1.3.1