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| author | Björn Töpel <bjorn@rivosinc.com> | 2024-10-24 12:03:51 -0700 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-10-30 23:39:34 -0700 |
| commit | 8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2 (patch) | |
| tree | fdeda0ab1775eb24c4ee6b8717cb93fd46b39344 /tools/perf/arch | |
| parent | 54afc56db221c831479dd1b59eb0657c078355d1 (diff) | |
| download | linux-8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2.tar.gz linux-8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2.tar.bz2 linux-8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2.zip | |
perf, riscv: Wire up perf trace support for RISC-V
RISC-V does not currently support perf trace, since the system call
table is not generated.
Perform the copy/paste exercise, wiring up RISC-V system call table
generation.
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Anup Patel <anup@brainfault.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org
Cc: Atish Patra <atishp@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Link: https://lore.kernel.org/r/20241024190353.46737-1-bjorn@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/arch')
| -rw-r--r-- | tools/perf/arch/riscv/Makefile | 22 | ||||
| -rwxr-xr-x | tools/perf/arch/riscv/entry/syscalls/mksyscalltbl | 47 |
2 files changed, 69 insertions, 0 deletions
diff --git a/tools/perf/arch/riscv/Makefile b/tools/perf/arch/riscv/Makefile index 4664a78a1afd..00573af87a68 100644 --- a/tools/perf/arch/riscv/Makefile +++ b/tools/perf/arch/riscv/Makefile @@ -4,3 +4,25 @@ endif PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 PERF_HAVE_JITDUMP := 1 HAVE_KVM_STAT_SUPPORT := 1 + +# +# Syscall table generation for perf +# + +out := $(OUTPUT)arch/riscv/include/generated/asm +header := $(out)/syscalls.c +incpath := $(srctree)/tools +sysdef := $(srctree)/tools/arch/riscv/include/uapi/asm/unistd.h +sysprf := $(srctree)/tools/perf/arch/riscv/entry/syscalls/ +systbl := $(sysprf)/mksyscalltbl + +# Create output directory if not already present +$(shell [ -d '$(out)' ] || mkdir -p '$(out)') + +$(header): $(sysdef) $(systbl) + $(Q)$(SHELL) '$(systbl)' '$(CC)' '$(HOSTCC)' $(incpath) $(sysdef) > $@ + +clean:: + $(call QUIET_CLEAN, riscv) $(RM) $(header) + +archheaders: $(header) diff --git a/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl b/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl new file mode 100755 index 000000000000..c59f5e852b97 --- /dev/null +++ b/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl @@ -0,0 +1,47 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Generate system call table for perf. Derived from +# powerpc script. +# +# Copyright IBM Corp. 2017 +# Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> +# Changed by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> +# Changed by: Kim Phillips <kim.phillips@arm.com> +# Changed by: Björn Töpel <bjorn@rivosinc.com> + +gcc=$1 +hostcc=$2 +incpath=$3 +input=$4 + +if ! test -r $input; then + echo "Could not read input file" >&2 + exit 1 +fi + +create_sc_table() +{ + local sc nr max_nr + + while read sc nr; do + printf "%s\n" " [$nr] = \"$sc\"," + max_nr=$nr + done + + echo "#define SYSCALLTBL_RISCV_MAX_ID $max_nr" +} + +create_table() +{ + echo "#include \"$input\"" + echo "static const char *const syscalltbl_riscv[] = {" + create_sc_table + echo "};" +} + +$gcc -E -dM -x c -I $incpath/include/uapi $input \ + |awk '$2 ~ "__NR" && $3 !~ "__NR3264_" { + sub("^#define __NR(3264)?_", ""); + print | "sort -k2 -n"}' \ + |create_table |