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perf/arch: Remove perf_sample_data::regs_user_copy
authorPeter Zijlstra <peterz@infradead.org>
Fri, 30 Oct 2020 11:14:21 +0000 (12:14 +0100)
committerPeter Zijlstra <peterz@infradead.org>
Mon, 9 Nov 2020 17:12:34 +0000 (18:12 +0100)
commit76a4efa80900fc40e0fdf243b42aec9fb8c35d24
treee71668f6517452f1f7c13aac88a9dabab3f47b94
parent09da9c81253dd8e43e0d2d7cea02de6f9f19499d
perf/arch: Remove perf_sample_data::regs_user_copy

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
arch/arm/kernel/perf_regs.c
arch/arm64/kernel/perf_regs.c
arch/csky/kernel/perf_regs.c
arch/powerpc/perf/perf_regs.c
arch/riscv/kernel/perf_regs.c
arch/s390/kernel/perf_regs.c
arch/x86/kernel/perf_regs.c
include/linux/perf_event.h
include/linux/perf_regs.h
kernel/events/core.c