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authorMao Han <han_mao@c-sky.com>2019-09-05 11:46:35 +0800
committerPaul Walmsley <paul.walmsley@sifive.com>2019-09-05 00:48:58 -0700
commit98a93b0b561c571153b7cd6953e882bc3fd8cfcd (patch)
tree4698bf158191aa820da633e485089d0c447a6cd2 /tools/arch
parentdbeb90b0c1eb86a9b963b929d3c937afb7dadfa3 (diff)
downloadlinux-98a93b0b561c571153b7cd6953e882bc3fd8cfcd.tar.bz2
riscv: Add support for perf registers sampling
This patch implements the perf registers sampling and validation API for the riscv arch. The valid registers and their register ID are defined in perf_regs.h. Perf tool can backtrace in userspace with unwind library and the registers/user stack dump support. 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: minor patch description fix] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
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