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| author |   Mao Han <han_mao@c-sky.com> | 2019-08-29 14:57:00 +0800 |
|---|---|---|
| committer |   Paul Walmsley <paul.walmsley@sifive.com> | 2019-09-04 12:43:00 -0700 |
| commit | dbeb90b0c1eb86a9b963b929d3c937afb7dadfa3 (patch) | |
| tree | 75c68accfe0d5c2cefacd0ce511e6efdbbecd196 /arch/riscv/kernel/Makefile | |
| parent | riscv: add arch/riscv/Kbuild (diff) | |
| download | linux-dev-dbeb90b0c1eb86a9b963b929d3c937afb7dadfa3.tar.xz linux-dev-dbeb90b0c1eb86a9b963b929d3c937afb7dadfa3.zip | |
riscv: Add perf callchain support
This patch add support for perf callchain sampling on riscv platforms.
The return address of leaf function is retrieved from pt_regs as
it is not saved in the outmost frame.
Signed-off-by: Mao Han <han_mao@c-sky.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: linux-riscv <linux-riscv@lists.infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Guo Ren <guoren@kernel.org>
Tested-by: Greentime Hu <greentime.hu@sifive.com>
[paul.walmsley@sifive.com: fixed some 'checkpatch.pl --strict' issues;
fixed patch description spelling]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/Makefile')
| -rw-r--r-- | arch/riscv/kernel/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 2420d37d96de..b1bea89fc814 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_MODULE_SECTIONS) += module-sections.o obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o obj-$(CONFIG_DYNAMIC_FTRACE) += mcount-dyn.o -obj-$(CONFIG_PERF_EVENTS) += perf_event.o +obj-$(CONFIG_PERF_EVENTS) += perf_event.o +obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o clean: |