Re: [PATCH 6/8] perf tools: Move x86__is_amd_cpu() to util/env.c
From: Namhyung Kim
Date: Tue Oct 01 2024 - 18:39:20 EST
On Tue, Oct 01, 2024 at 12:03:29PM -0400, Liang, Kan wrote:
>
>
> On 2024-09-30 8:20 p.m., Namhyung Kim wrote:
> > It can be called from non-x86 platform so let's move it to the general
> > util directory. Also add a new helper perf_env__is_x86_amd_cpu() so
> > that it can be called with an existing perf_env as well.
> >
> > Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
> > ---
> > tools/perf/arch/x86/util/Build | 1 -
> > tools/perf/arch/x86/util/env.c | 19 -------------------
> > tools/perf/arch/x86/util/env.h | 7 -------
> > tools/perf/arch/x86/util/pmu.c | 2 +-
> > tools/perf/util/env.c | 24 ++++++++++++++++++++++++
> > tools/perf/util/env.h | 4 ++++
> > 6 files changed, 29 insertions(+), 28 deletions(-)
> > delete mode 100644 tools/perf/arch/x86/util/env.c
> > delete mode 100644 tools/perf/arch/x86/util/env.h
> >
> > diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build
> > index 2607ed5c42966543..ce6d802a1381c5ab 100644
> > --- a/tools/perf/arch/x86/util/Build
> > +++ b/tools/perf/arch/x86/util/Build
> > @@ -10,7 +10,6 @@ perf-util-y += evlist.o
> > perf-util-y += mem-events.o
> > perf-util-y += evsel.o
> > perf-util-y += iostat.o
> > -perf-util-y += env.o
> >
> > perf-util-$(CONFIG_DWARF) += dwarf-regs.o
> > perf-util-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o
> > diff --git a/tools/perf/arch/x86/util/env.c b/tools/perf/arch/x86/util/env.c
> > deleted file mode 100644
> > index 3e537ffb1353aab2..0000000000000000
> > --- a/tools/perf/arch/x86/util/env.c
> > +++ /dev/null
> > @@ -1,19 +0,0 @@
> > -// SPDX-License-Identifier: GPL-2.0
> > -#include "linux/string.h"
> > -#include "util/env.h"
> > -#include "env.h"
> > -
> > -bool x86__is_amd_cpu(void)
> > -{
> > - struct perf_env env = { .total_mem = 0, };
> > - static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */
> > -
> > - if (is_amd)
> > - goto ret;
> > -
> > - perf_env__cpuid(&env);
> > - is_amd = env.cpuid && strstarts(env.cpuid, "AuthenticAMD") ? 1 : -1;
> > - perf_env__exit(&env);
> > -ret:
> > - return is_amd >= 1 ? true : false;
> > -}
> > diff --git a/tools/perf/arch/x86/util/env.h b/tools/perf/arch/x86/util/env.h
> > deleted file mode 100644
> > index d78f080b6b3f889a..0000000000000000
> > --- a/tools/perf/arch/x86/util/env.h
> > +++ /dev/null
> > @@ -1,7 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -#ifndef _X86_ENV_H
> > -#define _X86_ENV_H
> > -
> > -bool x86__is_amd_cpu(void);
> > -
> > -#endif /* _X86_ENV_H */
> > diff --git a/tools/perf/arch/x86/util/pmu.c b/tools/perf/arch/x86/util/pmu.c
> > index c3d89d6ba1bf03ad..e0060dac2a9f9242 100644
> > --- a/tools/perf/arch/x86/util/pmu.c
> > +++ b/tools/perf/arch/x86/util/pmu.c
> > @@ -16,7 +16,7 @@
> > #include "../../../util/fncache.h"
> > #include "../../../util/pmus.h"
> > #include "mem-events.h"
> > -#include "env.h"
> > +#include "util/env.h"
> >
> > void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
> > {
> > diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
> > index 1edbccfc3281d2b1..470a0156e0722e4e 100644
> > --- a/tools/perf/util/env.c
> > +++ b/tools/perf/util/env.c
> > @@ -5,6 +5,7 @@
> > #include "util/header.h"
> > #include "linux/compiler.h"
> > #include <linux/ctype.h>
> > +#include <linux/string.h>
> > #include <linux/zalloc.h>
> > #include "cgroup.h"
> > #include <errno.h>
> > @@ -625,6 +626,7 @@ char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
> > return NULL;
> > }
> >
> > +
>
> Useless empty line.
Ugh, will remove.
Thanks,
Namhyung