linux-dev/arch/riscv/kernel/perf_regs.c, branch linus/masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/arch/riscv/kernel/perf_regs.c?h=linus%2Fmaster2020-11-09T17:12:34Zperf/arch: Remove perf_sample_data::regs_user_copy2020-11-09T17:12:34ZPeter Zijlstrapeterz@infradead.org2020-10-30T11:14:21Zurn:sha1:76a4efa80900fc40e0fdf243b42aec9fb8c35d24
struct perf_sample_data lives on-stack, we should be careful about it's
size. Furthermore, the pt_regs copy in there is only because x86_64 is a
trainwreck, solve it differently.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lkml.kernel.org/r/20201030151955.258178461@infradead.org
riscv: Add support for perf registers sampling2019-09-05T07:48:58ZMao Hanhan_mao@c-sky.com2019-09-05T03:46:35Zurn:sha1:98a93b0b561c571153b7cd6953e882bc3fd8cfcd
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>