Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull second round of s390 updates from Martin Schwidefsky:

 - rework of the vdso code to avoid the use of the access register mode

 - use perf AUX buffers for the transport of diagnostic sample data

 - add perf_regs and user stack dump support

 - enable perf call graphs for user space programs

 - add perf register support for floating-point registers

 - all remaining s390 related timer_setup conversions

 - bug fixes and cleanups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (30 commits)
  s390: remove unused parameter from Makefile
  zfcp: purely mechanical update using timer API, plus blank lines
  s390/scsi: Convert timers to use timer_setup()
  s390/cpum_sf: correctly set the PID and TID in perf samples
  s390/cpum_sf: load program parameter at sampler enablement
  s390/perf: add perf register support for floating-point registers
  s390/perf: extend perf_regs support to include floating-point registers
  s390/perf: define common DWARF register string table
  s390/perf: add support for perf_regs and libdw
  s390/perf: add perf_regs support and user stack dump
  s390/cpum_sf: do not register PMU if no sampling mode is authorized
  s390/cpumf: remove raw event support in basic-only sampling mode
  s390/perf: add callback to perf to enable using AUX buffer
  s390/cpumf: enable using AUX buffer
  s390/cpumf: introduce AUX buffer for dump diagnostic sample data
  s390/disassembler: increase show_code buffer size
  s390: Remove CONFIG_HARDENED_USERCOPY
  s390: enable CPU alternatives unconditionally
  s390/nmi: remove unused code
  s390/mm: remove unused code
  ...

2 files changed, 162 insertions, 4 deletions

diff --git a/tools/perf/arch/s390/include/dwarf-regs-table.h b/tools/perf/arch/s390/include/dwarf-regs-table.h
index 792d4c277225..671553525f41 100644
--- a/tools/perf/arch/s390/include/dwarf-regs-table.h
+++ b/tools/perf/arch/s390/include/dwarf-regs-table.h
@@ -1,9 +1,72 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifdef DEFINE_DWARF_REGSTR_TABLE
-/* This is included in perf/util/dwarf-regs.c */
+#ifndef S390_DWARF_REGS_TABLE_H
+#define S390_DWARF_REGS_TABLE_H
 
-static const char * const s390_regstr_tbl[] = {
+#define REG_DWARFNUM_NAME(reg, idx)	[idx] = "%" #reg
+
+/*
+ * For reference, see DWARF register mapping:
+ * http://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_s390/x1542.html
+ */
+static const char * const s390_dwarf_regs[] = {
 	"%r0", "%r1",  "%r2",  "%r3",  "%r4",  "%r5",  "%r6",  "%r7",
 	"%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15",
+	REG_DWARFNUM_NAME(f0, 16),
+	REG_DWARFNUM_NAME(f1, 20),
+	REG_DWARFNUM_NAME(f2, 17),
+	REG_DWARFNUM_NAME(f3, 21),
+	REG_DWARFNUM_NAME(f4, 18),
+	REG_DWARFNUM_NAME(f5, 22),
+	REG_DWARFNUM_NAME(f6, 19),
+	REG_DWARFNUM_NAME(f7, 23),
+	REG_DWARFNUM_NAME(f8, 24),
+	REG_DWARFNUM_NAME(f9, 28),
+	REG_DWARFNUM_NAME(f10, 25),
+	REG_DWARFNUM_NAME(f11, 29),
+	REG_DWARFNUM_NAME(f12, 26),
+	REG_DWARFNUM_NAME(f13, 30),
+	REG_DWARFNUM_NAME(f14, 27),
+	REG_DWARFNUM_NAME(f15, 31),
+	REG_DWARFNUM_NAME(c0, 32),
+	REG_DWARFNUM_NAME(c1, 33),
+	REG_DWARFNUM_NAME(c2, 34),
+	REG_DWARFNUM_NAME(c3, 35),
+	REG_DWARFNUM_NAME(c4, 36),
+	REG_DWARFNUM_NAME(c5, 37),
+	REG_DWARFNUM_NAME(c6, 38),
+	REG_DWARFNUM_NAME(c7, 39),
+	REG_DWARFNUM_NAME(c8, 40),
+	REG_DWARFNUM_NAME(c9, 41),
+	REG_DWARFNUM_NAME(c10, 42),
+	REG_DWARFNUM_NAME(c11, 43),
+	REG_DWARFNUM_NAME(c12, 44),
+	REG_DWARFNUM_NAME(c13, 45),
+	REG_DWARFNUM_NAME(c14, 46),
+	REG_DWARFNUM_NAME(c15, 47),
+	REG_DWARFNUM_NAME(a0, 48),
+	REG_DWARFNUM_NAME(a1, 49),
+	REG_DWARFNUM_NAME(a2, 50),
+	REG_DWARFNUM_NAME(a3, 51),
+	REG_DWARFNUM_NAME(a4, 52),
+	REG_DWARFNUM_NAME(a5, 53),
+	REG_DWARFNUM_NAME(a6, 54),
+	REG_DWARFNUM_NAME(a7, 55),
+	REG_DWARFNUM_NAME(a8, 56),
+	REG_DWARFNUM_NAME(a9, 57),
+	REG_DWARFNUM_NAME(a10, 58),
+	REG_DWARFNUM_NAME(a11, 59),
+	REG_DWARFNUM_NAME(a12, 60),
+	REG_DWARFNUM_NAME(a13, 61),
+	REG_DWARFNUM_NAME(a14, 62),
+	REG_DWARFNUM_NAME(a15, 63),
+	REG_DWARFNUM_NAME(pswm, 64),
+	REG_DWARFNUM_NAME(pswa, 65),
 };
-#endif
+
+#ifdef DEFINE_DWARF_REGSTR_TABLE
+/* This is included in perf/util/dwarf-regs.c */
+
+#define s390_regstr_tbl s390_dwarf_regs
+
+#endif	/* DEFINE_DWARF_REGSTR_TABLE */
+#endif	/* S390_DWARF_REGS_TABLE_H */
diff --git a/tools/perf/arch/s390/include/perf_regs.h b/tools/perf/arch/s390/include/perf_regs.h
new file mode 100644
index 000000000000..d2df54a6bc5a
--- /dev/null
+++ b/tools/perf/arch/s390/include/perf_regs.h
@@ -0,0 +1,95 @@
+#ifndef ARCH_PERF_REGS_H
+#define ARCH_PERF_REGS_H
+
+#include <stdlib.h>
+#include <linux/types.h>
+#include <../../../../arch/s390/include/uapi/asm/perf_regs.h>
+
+void perf_regs_load(u64 *regs);
+
+#define PERF_REGS_MASK ((1ULL << PERF_REG_S390_MAX) - 1)
+#define PERF_REGS_MAX PERF_REG_S390_MAX
+#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_64
+
+#define PERF_REG_IP PERF_REG_S390_PC
+#define PERF_REG_SP PERF_REG_S390_R15
+
+static inline const char *perf_reg_name(int id)
+{
+	switch (id) {
+	case PERF_REG_S390_R0:
+		return "R0";
+	case PERF_REG_S390_R1:
+		return "R1";
+	case PERF_REG_S390_R2:
+		return "R2";
+	case PERF_REG_S390_R3:
+		return "R3";
+	case PERF_REG_S390_R4:
+		return "R4";
+	case PERF_REG_S390_R5:
+		return "R5";
+	case PERF_REG_S390_R6:
+		return "R6";
+	case PERF_REG_S390_R7:
+		return "R7";
+	case PERF_REG_S390_R8:
+		return "R8";
+	case PERF_REG_S390_R9:
+		return "R9";
+	case PERF_REG_S390_R10:
+		return "R10";
+	case PERF_REG_S390_R11:
+		return "R11";
+	case PERF_REG_S390_R12:
+		return "R12";
+	case PERF_REG_S390_R13:
+		return "R13";
+	case PERF_REG_S390_R14:
+		return "R14";
+	case PERF_REG_S390_R15:
+		return "R15";
+	case PERF_REG_S390_FP0:
+		return "FP0";
+	case PERF_REG_S390_FP1:
+		return "FP1";
+	case PERF_REG_S390_FP2:
+		return "FP2";
+	case PERF_REG_S390_FP3:
+		return "FP3";
+	case PERF_REG_S390_FP4:
+		return "FP4";
+	case PERF_REG_S390_FP5:
+		return "FP5";
+	case PERF_REG_S390_FP6:
+		return "FP6";
+	case PERF_REG_S390_FP7:
+		return "FP7";
+	case PERF_REG_S390_FP8:
+		return "FP8";
+	case PERF_REG_S390_FP9:
+		return "FP9";
+	case PERF_REG_S390_FP10:
+		return "FP10";
+	case PERF_REG_S390_FP11:
+		return "FP11";
+	case PERF_REG_S390_FP12:
+		return "FP12";
+	case PERF_REG_S390_FP13:
+		return "FP13";
+	case PERF_REG_S390_FP14:
+		return "FP14";
+	case PERF_REG_S390_FP15:
+		return "FP15";
+	case PERF_REG_S390_MASK:
+		return "MASK";
+	case PERF_REG_S390_PC:
+		return "PC";
+	default:
+		return NULL;
+	}
+
+	return NULL;
+}
+
+#endif /* ARCH_PERF_REGS_H */