linux-kernel - [PATCH 1/1] perf jitdump: Add riscv64 support.

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Message-Id: <20220406142606.18464-2-eric.lin@sifive.com>
Date:   Wed,  6 Apr 2022 22:26:06 +0800
From:   Eric Lin <eric.lin@...ive.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...nel.org, namhyung@...nel.org, palmer@...belt.com,
        aou@...s.berkeley.edu, iii@...ux.ibm.com,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Cc:     paul.walmsley@...ive.com, greentime.hu@...ive.com,
        Eric Lin <eric.lin@...ive.com>
Subject: [PATCH 1/1] perf jitdump: Add riscv64 support.

Signed-off-by: Eric Lin <eric.lin@...ive.com>
---
 tools/perf/arch/riscv/Makefile | 1 +
 tools/perf/util/genelf.h       | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/tools/perf/arch/riscv/Makefile b/tools/perf/arch/riscv/Makefile
index 1aa9dd772489..a8d25d005207 100644
--- a/tools/perf/arch/riscv/Makefile
+++ b/tools/perf/arch/riscv/Makefile
@@ -2,3 +2,4 @@ ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 endif
 PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
+PERF_HAVE_JITDUMP := 1
diff --git a/tools/perf/util/genelf.h b/tools/perf/util/genelf.h
index 3db3293213a9..ae138afe6c56 100644
--- a/tools/perf/util/genelf.h
+++ b/tools/perf/util/genelf.h
@@ -38,6 +38,9 @@ int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_ent
 #elif defined(__s390x__)
 #define GEN_ELF_ARCH	EM_S390
 #define GEN_ELF_CLASS	ELFCLASS64
+#elif defined(__riscv) && __riscv_xlen == 64
+#define GEN_ELF_ARCH	EM_RISCV
+#define GEN_ELF_CLASS	ELFCLASS64
 #else
 #error "unsupported architecture"
 #endif
-- 
2.35.1