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Previously, builtin-trace.c directly included 15 embedded C files
(e.g. trace/beauty/mmap.c and fsconfig_arrays.c), which in turn depend
on dozens of generated beauty script arrays. To satisfy these embedded
inclusions, the global Makefile.perf would define all the generator
variables/rules and include them in the prepare umbrella target, choking
parallel build startup.
Furthermore, tools/perf/util/syscalltbl.c included its own generated mapper,
and util/env.c conditionally included arch_errno_names.c inline, splitting
consumers across directories and preventing clean Make encapsulation.
Refactor the framework to achieve better encapsulation:
1. Move util/syscalltbl.[ch] into trace/beauty/ to co-locate with all
generated code consumers.
2. Create fsconfig.c and flatten embedded beauty .c files to compile as
independent standalone objects via trace/beauty/Build, exporting their
formatting functions via beauty.h and env.h. Switch arch_errno_names.o
and syscalltbl.o assignments directly to perf-util-y and add an
unconditional top-level recursive kbuild hook (perf-util-y += trace/beauty/)
to compile them into libperf-util.a, resolving remote linkage for util/env.c,
util/bpf-trace-summary.c, and standalone python extensions.
3. Bridge private opaque references (struct trace) securely via accessors
trace__show_zeros() and trace__host(), avoiding header entanglements.
4. Consolidate all generator variables, script paths, and array generation
rules entirely out of Makefile.perf and place them directly inside the
exact local Build files where their output objects are compiled
(trace/beauty/Build and trace/beauty/tracepoints/Build), binding
prerequisites locally. Use directly inside
generator recipes to guarantee dynamic directory creation before script
redirection, and append across all rules to print
clean, standardized GEN ... file.c output during compilation.
5. Clean up clean target to recursively remove the generated directory
instead of relying on dozens of individual variables.
This unchokes the "prepare" target parallel barrier, allows make to evaluate
generation scripts purely locally where consumed, and flattens the tracepoint
formatting architecture.
Testing a parallel build (make -j28 all from scratch) shows improvements:
Before:
real 0m28.689s
user 2m38.490s
sys 0m30.148s
After:
real 0m27.642s
user 2m32.356s
sys 0m26.683s
So reclaiming ~9.6 seconds of raw CPU time and over 1 full second off
overall real-world build latency, by overlapping sub-make startup and
avoiding top-level double-parsing overhead.
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro-preview
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Chartre <alexandre.chartre@oracle.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Ankur Arora <ankur.a.arora@oracle.com>
Cc: Collin Funk <collin.funk1@gmail.com>
Cc: Costa Shulyupin <costa.shul@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Markus Mayer <mmayer@broadcom.com>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Monnet <qmo@kernel.org>
Cc: Ricky Ringler <ricky.ringler@proton.me>
Cc: Song Liu <song@kernel.org>
Cc: Swapnil Sapkal <swapnil.sapkal@amd.com>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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directory used to build perf
It is used only to generate string tables, not to build perf, so move it
to the tools/perf/trace/beauty/include/ hierarchy, that is used just for
scraping.
This is a something that should've have happened, as happened with the
linux/socket.h scrapper, do it now as Ian suggested while doing an
audit/refactor session in the headers used by perf.
No other tools/ living code uses it.
Suggested-by: Ian Rogers <irogers@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/CAP-5=fWZVrpRufO4w-S4EcSi9STXcTAN2ERLwTSN7yrSSA-otQ@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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IRQ_MOVE_CLEANUP_VECTOR is not longer in use. Remove the last traces.
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230621171248.6805-4-xin3.li@intel.com
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Allows the movement of 46,072 bytes from .data to .data.rel.ro.
Signed-off-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20230526183401.2326121-6-irogers@google.com
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ross Zwisler <zwisler@chromium.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The latest version of grep claims the egrep is now obsolete so the build
now contains warnings that look like:
egrep: warning: egrep is obsolescent; using grep -E
fix this up by moving the related file to use "grep -E" instead.
sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/perf`
Here are the steps to install the latest grep:
wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz
tar xf grep-3.8.tar.gz
cd grep-3.8 && ./configure && make
sudo make install
export PATH=/usr/local/bin:$PATH
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/1668762999-9297-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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There are two definitions for the TSC deadline MSR in msr-index.h,
one with an underscore and one without. Axe one of them and move
all the references over to the other one.
[ bp: Fixup the MSR define in handle_fastpath_set_msr_irqoff() too. ]
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200305174706.0D6B8EE4@viggo.jf.intel.com
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To pick up the changes in:
Fixes: 69372cf01290b958 ("x86/cpu: Add VM page flush MSR availablility as a CPUID feature")
That cause these changes in tooling:
$ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
$ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
$ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
$ diff -u before after
--- before 2020-12-21 09:09:05.593005003 -0300
+++ after 2020-12-21 09:12:48.436994802 -0300
@@ -21,7 +21,7 @@
[0x0000004f] = "PPIN",
[0x00000060] = "LBR_CORE_TO",
[0x00000079] = "IA32_UCODE_WRITE",
- [0x0000008b] = "IA32_UCODE_REV",
+ [0x0000008b] = "AMD64_PATCH_LEVEL",
[0x0000008C] = "IA32_SGXLEPUBKEYHASH0",
[0x0000008D] = "IA32_SGXLEPUBKEYHASH1",
[0x0000008E] = "IA32_SGXLEPUBKEYHASH2",
@@ -286,6 +286,7 @@
[0xc0010114 - x86_AMD_V_KVM_MSRs_offset] = "VM_CR",
[0xc0010115 - x86_AMD_V_KVM_MSRs_offset] = "VM_IGNNE",
[0xc0010117 - x86_AMD_V_KVM_MSRs_offset] = "VM_HSAVE_PA",
+ [0xc001011e - x86_AMD_V_KVM_MSRs_offset] = "AMD64_VM_PAGE_FLUSH",
[0xc001011f - x86_AMD_V_KVM_MSRs_offset] = "AMD64_VIRT_SPEC_CTRL",
[0xc0010130 - x86_AMD_V_KVM_MSRs_offset] = "AMD64_SEV_ES_GHCB",
[0xc0010131 - x86_AMD_V_KVM_MSRs_offset] = "AMD64_SEV",
$
The new MSR has a pattern that wasn't matched to avoid a clash with
IA32_UCODE_REV, change the regex to prefer the more relevant AMD_
prefixed ones to catch this new AMD64_VM_PAGE_FLUSH MSR.
Which causes these parts of tools/perf/ to be rebuilt:
CC /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
LD /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
LD /tmp/build/perf/trace/beauty/perf-in.o
LD /tmp/build/perf/perf-in.o
LINK /tmp/build/perf/perf
This addresses this perf tools build warning:
diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We need to wrap this autogenerated string array with the
strarray__scnprintf() formatter and the strarray__strotul() lookup
method, do it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-bx2cjcyv6aerhyy3gvu3uwcy@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We'll wire this up with the 'vector' arg in irq_vectors:*, etc:
Just run it straight away and check what it produces:
$ tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh
static const char *x86_irq_vectors[] = {
[0x02] = "NMI",
[0x12] = "MCE",
[0x20] = "IRQ_MOVE_CLEANUP",
[0x80] = "IA32_SYSCALL",
[0xec] = "LOCAL_TIMER",
[0xed] = "HYPERV_STIMER0",
[0xee] = "HYPERV_REENLIGHTENMENT",
[0xef] = "MANAGED_IRQ_SHUTDOWN",
[0xf0] = "POSTED_INTR_NESTED",
[0xf1] = "POSTED_INTR_WAKEUP",
[0xf2] = "POSTED_INTR",
[0xf3] = "HYPERVISOR_CALLBACK",
[0xf4] = "DEFERRED_ERROR",
[0xf6] = "IRQ_WORK",
[0xf7] = "X86_PLATFORM_IPI",
[0xf8] = "REBOOT",
[0xf9] = "THRESHOLD_APIC",
[0xfa] = "THERMAL_APIC",
[0xfb] = "CALL_FUNCTION_SINGLE",
[0xfc] = "CALL_FUNCTION",
[0xfd] = "RESCHEDULE",
[0xfe] = "ERROR_APIC",
[0xff] = "SPURIOUS_APIC",
};
$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-cpl1pa7kkwn0llufi5qw4li8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Continuing from the previous cset comment, now that filter expression
works:
# perf trace -e msr:* --filter="msr!=FS_BASE && msr != IA32_TSC_DEADLINE && msr != 0x830 && msr != 0x83f && msr !=IA32_SPEC_CTRL" --filter-pids 3750
0.000 Timer/5033 msr:write_msr(msr: SYSCALL_MASK, val: 292608)
0.009 Timer/5033 msr:write_msr(msr: LSTAR, val: -1398800368)
0.010 Timer/5033 msr:write_msr(msr: TSC_AUX, val: 4)
0.050 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
45.661 gnome-terminal/12595 msr:write_msr(msr: SYSCALL_MASK, val: 292608)
45.672 gnome-terminal/12595 msr:write_msr(msr: LSTAR, val: -1398800368)
45.675 gnome-terminal/12595 msr:write_msr(msr: TSC_AUX, val: 3)
54.852 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
130.508 Timer/4050 msr:write_msr(msr: SYSCALL_MASK, val: 292608)
130.527 Timer/4050 msr:write_msr(msr: LSTAR, val: -1398800368)
130.531 Timer/4050 msr:write_msr(msr: TSC_AUX, val: 3)
140.924 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
164.738 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
603.578 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
620.809 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
690.115 JS Watchdog/4259 msr:write_msr(msr: SYSCALL_MASK, val: 292608)
690.136 JS Watchdog/4259 msr:write_msr(msr: LSTAR, val: -1398800368)
690.141 JS Watchdog/4259 msr:write_msr(msr: TSC_AUX, val: 3)
690.186 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
759.016 :0/0 msr:read_msr(msr: IA32_TSC_ADJUST)
^C[root@quaco ~]#
Or look at the first 3 write_msr events for that IA32_TSC_DEADLINE to learn why
it happens so often:
# perf trace --max-events=3 --max-stack=8 -e msr:* --filter="msr==IA32_TSC_DEADLINE" --filter-pids 3750
0.000 :0/0 msr:write_msr(msr: IA32_TSC_DEADLINE, val: 19296732550862)
do_trace_write_msr ([kernel.kallsyms])
do_trace_write_msr ([kernel.kallsyms])
lapic_next_deadline ([kernel.kallsyms])
clockevents_program_event ([kernel.kallsyms])
hrtimer_interrupt ([kernel.kallsyms])
smp_apic_timer_interrupt ([kernel.kallsyms])
apic_timer_interrupt ([kernel.kallsyms])
cpuidle_enter_state ([kernel.kallsyms])
32.646 :0/0 msr:write_msr(msr: IA32_TSC_DEADLINE, val: 19296800134158)
do_trace_write_msr ([kernel.kallsyms])
do_trace_write_msr ([kernel.kallsyms])
lapic_next_deadline ([kernel.kallsyms])
clockevents_program_event ([kernel.kallsyms])
hrtimer_start_range_ns ([kernel.kallsyms])
tick_nohz_restart_sched_tick ([kernel.kallsyms])
tick_nohz_idle_exit ([kernel.kallsyms])
do_idle ([kernel.kallsyms])
32.802 :0/0 msr:write_msr(msr: IA32_TSC_DEADLINE, val: 19297507436922)
do_trace_write_msr ([kernel.kallsyms])
do_trace_write_msr ([kernel.kallsyms])
lapic_next_deadline ([kernel.kallsyms])
clockevents_program_event ([kernel.kallsyms])
hrtimer_try_to_cancel ([kernel.kallsyms])
hrtimer_cancel ([kernel.kallsyms])
tick_nohz_restart_sched_tick ([kernel.kallsyms])
tick_nohz_idle_exit ([kernel.kallsyms])
#
And if some of the strings can't be found:
# trace -e msr:* --filter="msr!=SPECULATIVE_EXECUTION_PROBLEMS_SOLUTION && msr != IA32_TSC_DEADLINE && msr != 0x830 && msr != 0x83f && msr !=IA32_SPEC_CTRL" --filter-pids 3750
"SPECULATIVE_EXECUTION_PROBLEMS_SOLUTION" not found for "msr" in "msr:read_msr", can't set filter "(msr!=SPECULATIVE_EXECUTION_PROBLEMS_SOLUTION && msr != IA32_TSC_DEADLINE && msr != 0x830 && msr != 0x83f && msr !=IA32_SPEC_CTRL) && (common_pid != 28131 && common_pid != 3750)"
#
Next step is to automatically wire up the pre-existing strarrays, which there
are quite a few.
The strtoul() methods will be further enhanced to allow for looking at other
arguments in a syscall/tracepoint, just like going from integer to string
(scnprintf methods), so that those "val" lines for the msr tracepoints can be
properly formatted or even resolved into some string.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-4qaai5iqjgefd11k4ddm7qg8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We need to wrap those autogenerated string arrays with the
strarrays__scnprintf() formatter, do it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-wqjz4kwi4a0ot6lsis3kc65j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Without parameters it'll parse tools/arch/x86/include/asm/msr-index.h
and output a table usable by tools, that will be wired up later to a
libtraceevent plugin registered from perf's glue code:
$ tools/perf/trace/beauty/tracepoints/x86_msr.sh
static const char *x86_MSRs[] = {
<SNIP>
[0x00000034] = "SMI_COUNT",
[0x0000003a] = "IA32_FEATURE_CONTROL",
[0x0000003b] = "IA32_TSC_ADJUST",
[0x00000040] = "LBR_CORE_FROM",
[0x00000048] = "IA32_SPEC_CTRL",
[0x00000049] = "IA32_PRED_CMD",
<SNIP>
[0x0000010b] = "IA32_FLUSH_CMD",
[0x0000010F] = "TSX_FORCE_ABORT",
<SNIP>
[0x00000198] = "IA32_PERF_STATUS",
[0x00000199] = "IA32_PERF_CTL",
<SNIP>
[0x00000da0] = "IA32_XSS",
[0x00000dc0] = "LBR_INFO_0",
[0x00000ffc] = "IA32_BNDCFGS_RSVD",
};
#define x86_64_specific_MSRs_offset 0xc0000080
static const char *x86_64_specific_MSRs[] = {
[0xc0000080 - x86_64_specific_MSRs_offset] = "EFER",
[0xc0000081 - x86_64_specific_MSRs_offset] = "STAR",
[0xc0000082 - x86_64_specific_MSRs_offset] = "LSTAR",
[0xc0000083 - x86_64_specific_MSRs_offset] = "CSTAR",
[0xc0000084 - x86_64_specific_MSRs_offset] = "SYSCALL_MASK",
<SNIP>
[0xc0000103 - x86_64_specific_MSRs_offset] = "TSC_AUX",
[0xc0000104 - x86_64_specific_MSRs_offset] = "AMD64_TSC_RATIO",
};
#define x86_AMD_V_KVM_MSRs_offset 0xc0010000
static const char *x86_AMD_V_KVM_MSRs[] = {
[0xc0010000 - x86_AMD_V_KVM_MSRs_offset] = "K7_EVNTSEL0",
<SNIP>
[0xc0010114 - x86_AMD_V_KVM_MSRs_offset] = "VM_CR",
[0xc0010115 - x86_AMD_V_KVM_MSRs_offset] = "VM_IGNNE",
[0xc0010117 - x86_AMD_V_KVM_MSRs_offset] = "VM_HSAVE_PA",
<SNIP>
[0xc0010240 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTL",
[0xc0010241 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTR",
[0xc0010280 - x86_AMD_V_KVM_MSRs_offset] = "F15H_PTSC",
};
Then these will in turn be hooked up in a follow up patch to be used by
strarrays__scnprintf().
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-ja080xawx08kedez855usnon@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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