mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 06:20:50 +07:00
99e8c5a3b8
The kbuild's select command doesn't propagate through the config dependencies. Hence the current rules of hardware breakpoint's config can't ensure perf can never be disabled under us. We have: config X86 selects HAVE_HW_BREAKPOINTS config HAVE_HW_BREAKPOINTS select PERF_EVENTS config PERF_EVENTS [...] x86 will select the breakpoints but that won't propagate to perf events. The user can still disable the latter, but it is necessary for the breakpoints. What we need is: - x86 selects HAVE_HW_BREAKPOINTS and PERF_EVENTS - HAVE_HW_BREAKPOINTS depends on PERF_EVENTS so that we ensure PERF_EVENTS is enabled and frozen for x86. This fixes the following kind of build errors: In file included from arch/x86/kernel/hw_breakpoint.c:31: include/linux/hw_breakpoint.h: In function 'hw_breakpoint_addr': include/linux/hw_breakpoint.h:39: error: 'struct perf_event' has no member named 'attr' v2: Select also ANON_INODES from x86, required for perf Reported-by: Cyrill Gorcunov <gorcunov@gmail.com> Reported-by: Michal Marek <mmarek@suse.cz> Reported-by: Andrew Randrianasulu <randrik_a@yahoo.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> LKML-Reference: <1261010034-7786-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
144 lines
3.8 KiB
Plaintext
144 lines
3.8 KiB
Plaintext
#
|
|
# General architecture dependent options
|
|
#
|
|
|
|
config OPROFILE
|
|
tristate "OProfile system profiling (EXPERIMENTAL)"
|
|
depends on PROFILING
|
|
depends on HAVE_OPROFILE
|
|
depends on TRACING_SUPPORT
|
|
select TRACING
|
|
select RING_BUFFER
|
|
select RING_BUFFER_ALLOW_SWAP
|
|
help
|
|
OProfile is a profiling system capable of profiling the
|
|
whole system, include the kernel, kernel modules, libraries,
|
|
and applications.
|
|
|
|
If unsure, say N.
|
|
|
|
config OPROFILE_IBS
|
|
bool "OProfile AMD IBS support (EXPERIMENTAL)"
|
|
default n
|
|
depends on OPROFILE && SMP && X86
|
|
help
|
|
Instruction-Based Sampling (IBS) is a new profiling
|
|
technique that provides rich, precise program performance
|
|
information. IBS is introduced by AMD Family10h processors
|
|
(AMD Opteron Quad-Core processor "Barcelona") to overcome
|
|
the limitations of conventional performance counter
|
|
sampling.
|
|
|
|
If unsure, say N.
|
|
|
|
config OPROFILE_EVENT_MULTIPLEX
|
|
bool "OProfile multiplexing support (EXPERIMENTAL)"
|
|
default n
|
|
depends on OPROFILE && X86
|
|
help
|
|
The number of hardware counters is limited. The multiplexing
|
|
feature enables OProfile to gather more events than counters
|
|
are provided by the hardware. This is realized by switching
|
|
between events at an user specified time interval.
|
|
|
|
If unsure, say N.
|
|
|
|
config HAVE_OPROFILE
|
|
bool
|
|
|
|
config KPROBES
|
|
bool "Kprobes"
|
|
depends on KALLSYMS && MODULES
|
|
depends on HAVE_KPROBES
|
|
help
|
|
Kprobes allows you to trap at almost any kernel address and
|
|
execute a callback function. register_kprobe() establishes
|
|
a probepoint and specifies the callback. Kprobes is useful
|
|
for kernel debugging, non-intrusive instrumentation and testing.
|
|
If in doubt, say "N".
|
|
|
|
config HAVE_EFFICIENT_UNALIGNED_ACCESS
|
|
bool
|
|
help
|
|
Some architectures are unable to perform unaligned accesses
|
|
without the use of get_unaligned/put_unaligned. Others are
|
|
unable to perform such accesses efficiently (e.g. trap on
|
|
unaligned access and require fixing it up in the exception
|
|
handler.)
|
|
|
|
This symbol should be selected by an architecture if it can
|
|
perform unaligned accesses efficiently to allow different
|
|
code paths to be selected for these cases. Some network
|
|
drivers, for example, could opt to not fix up alignment
|
|
problems with received packets if doing so would not help
|
|
much.
|
|
|
|
See Documentation/unaligned-memory-access.txt for more
|
|
information on the topic of unaligned memory accesses.
|
|
|
|
config HAVE_SYSCALL_WRAPPERS
|
|
bool
|
|
|
|
config KRETPROBES
|
|
def_bool y
|
|
depends on KPROBES && HAVE_KRETPROBES
|
|
|
|
config USER_RETURN_NOTIFIER
|
|
bool
|
|
depends on HAVE_USER_RETURN_NOTIFIER
|
|
help
|
|
Provide a kernel-internal notification when a cpu is about to
|
|
switch to user mode.
|
|
|
|
config HAVE_IOREMAP_PROT
|
|
bool
|
|
|
|
config HAVE_KPROBES
|
|
bool
|
|
|
|
config HAVE_KRETPROBES
|
|
bool
|
|
|
|
#
|
|
# An arch should select this if it provides all these things:
|
|
#
|
|
# task_pt_regs() in asm/processor.h or asm/ptrace.h
|
|
# arch_has_single_step() if there is hardware single-step support
|
|
# arch_has_block_step() if there is hardware block-step support
|
|
# asm/syscall.h supplying asm-generic/syscall.h interface
|
|
# linux/regset.h user_regset interfaces
|
|
# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
|
|
# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
|
|
# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
|
|
# signal delivery calls tracehook_signal_handler()
|
|
#
|
|
config HAVE_ARCH_TRACEHOOK
|
|
bool
|
|
|
|
config HAVE_DMA_ATTRS
|
|
bool
|
|
|
|
config USE_GENERIC_SMP_HELPERS
|
|
bool
|
|
|
|
config HAVE_CLK
|
|
bool
|
|
help
|
|
The <linux/clk.h> calls support software clock gating and
|
|
thus are a key power management tool on many systems.
|
|
|
|
config HAVE_DMA_API_DEBUG
|
|
bool
|
|
|
|
config HAVE_DEFAULT_NO_SPIN_MUTEXES
|
|
bool
|
|
|
|
config HAVE_HW_BREAKPOINT
|
|
bool
|
|
depends on PERF_EVENTS
|
|
|
|
config HAVE_USER_RETURN_NOTIFIER
|
|
bool
|
|
|
|
source "kernel/gcov/Kconfig"
|