After kernel 3.7 (commit b4b8f770eb10a1bccaf8aa0ec1956e2dd7ed1e0a),
/proc/cpuinfo replaces 'Processor' to 'model name'. This patch makes
CPUINFO_PROC to an array and provides two choices for ARM, makes it
compatible for different kernel version.
v1 -> v2: minor changes as suggested by Namhyung Kim:
- Doesn't pass @h and @evlist to __write_cpudesc;
- Coding style fix.
Signed-off-by: Wang Nan <[email protected]>
Cc: Namhyung Kim <[email protected]>
---
tools/perf/perf.h | 24 ++++++++++++------------
tools/perf/util/header.c | 27 +++++++++++++++++++++------
2 files changed, 33 insertions(+), 18 deletions(-)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 32bd102..1a23392 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -6,7 +6,7 @@
#if defined(__i386__)
#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
-#define CPUINFO_PROC "model name"
+#define CPUINFO_PROC {"model name"}
#ifndef __NR_perf_event_open
# define __NR_perf_event_open 336
#endif
@@ -15,7 +15,7 @@
#if defined(__x86_64__)
#define rmb() asm volatile("lfence" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
-#define CPUINFO_PROC "model name"
+#define CPUINFO_PROC {"model name"}
#ifndef __NR_perf_event_open
# define __NR_perf_event_open 298
#endif
@@ -25,7 +25,7 @@
#include "../../arch/powerpc/include/uapi/asm/unistd.h"
#define rmb() asm volatile ("sync" ::: "memory")
#define cpu_relax() asm volatile ("" ::: "memory");
-#define CPUINFO_PROC "cpu"
+#define CPUINFO_PROC {"cpu"}
#endif
#ifdef __s390__
@@ -40,31 +40,31 @@
# define rmb() asm volatile("" ::: "memory")
#endif
#define cpu_relax() asm volatile("" ::: "memory")
-#define CPUINFO_PROC "cpu type"
+#define CPUINFO_PROC {"cpu type"}
#endif
#ifdef __hppa__
#define rmb() asm volatile("" ::: "memory")
#define cpu_relax() asm volatile("" ::: "memory");
-#define CPUINFO_PROC "cpu"
+#define CPUINFO_PROC {"cpu"}
#endif
#ifdef __sparc__
#define rmb() asm volatile("":::"memory")
#define cpu_relax() asm volatile("":::"memory")
-#define CPUINFO_PROC "cpu"
+#define CPUINFO_PROC {"cpu"}
#endif
#ifdef __alpha__
#define rmb() asm volatile("mb" ::: "memory")
#define cpu_relax() asm volatile("" ::: "memory")
-#define CPUINFO_PROC "cpu model"
+#define CPUINFO_PROC {"cpu model"}
#endif
#ifdef __ia64__
#define rmb() asm volatile ("mf" ::: "memory")
#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
-#define CPUINFO_PROC "model name"
+#define CPUINFO_PROC {"model name"}
#endif
#ifdef __arm__
@@ -74,7 +74,7 @@
*/
#define rmb() ((void(*)(void))0xffff0fa0)()
#define cpu_relax() asm volatile("":::"memory")
-#define CPUINFO_PROC "Processor"
+#define CPUINFO_PROC {"model name", "Processor"}
#endif
#ifdef __aarch64__
@@ -91,19 +91,19 @@
: /* no input */ \
: "memory")
#define cpu_relax() asm volatile("" ::: "memory")
-#define CPUINFO_PROC "cpu model"
+#define CPUINFO_PROC {"cpu model"}
#endif
#ifdef __arc__
#define rmb() asm volatile("" ::: "memory")
#define cpu_relax() rmb()
-#define CPUINFO_PROC "Processor"
+#define CPUINFO_PROC {"Processor"}
#endif
#ifdef __metag__
#define rmb() asm volatile("" ::: "memory")
#define cpu_relax() asm volatile("" ::: "memory")
-#define CPUINFO_PROC "CPU"
+#define CPUINFO_PROC {"CPU"}
#endif
#include <time.h>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b59350f..d48f571 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -550,16 +550,12 @@ static int write_version(int fd, struct perf_header *h __maybe_unused,
return do_write_string(fd, perf_version_string);
}
-static int write_cpudesc(int fd, struct perf_header *h __maybe_unused,
- struct perf_evlist *evlist __maybe_unused)
+static int __write_cpudesc(int fd, const char *cpuinfo_proc)
{
-#ifndef CPUINFO_PROC
-#define CPUINFO_PROC NULL
-#endif
FILE *file;
char *buf = NULL;
char *s, *p;
- const char *search = CPUINFO_PROC;
+ const char *search = cpuinfo_proc;
size_t len = 0;
int ret = -1;
@@ -611,6 +607,25 @@ done:
return ret;
}
+static int write_cpudesc(int fd, struct perf_header *h __maybe_unused,
+ struct perf_evlist *evlist __maybe_unused)
+{
+#ifndef CPUINFO_PROC
+#define CPUINFO_PROC {"model name", }
+#endif
+ const char *cpuinfo_procs[] = CPUINFO_PROC;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) {
+ int ret;
+ ret = __write_cpudesc(fd, cpuinfo_procs[i]);
+ if (ret >= 0)
+ return ret;
+ }
+ return -1;
+}
+
+
static int write_nrcpus(int fd, struct perf_header *h __maybe_unused,
struct perf_evlist *evlist __maybe_unused)
{
--
1.8.4
On Wed, 22 Oct 2014 15:40:14 +0800, Wang Nan wrote:
> After kernel 3.7 (commit b4b8f770eb10a1bccaf8aa0ec1956e2dd7ed1e0a),
> /proc/cpuinfo replaces 'Processor' to 'model name'. This patch makes
> CPUINFO_PROC to an array and provides two choices for ARM, makes it
> compatible for different kernel version.
>
> v1 -> v2: minor changes as suggested by Namhyung Kim:
>
> - Doesn't pass @h and @evlist to __write_cpudesc;
> - Coding style fix.
>
> Signed-off-by: Wang Nan <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Thanks,
Namhyung
> ---
> tools/perf/perf.h | 24 ++++++++++++------------
> tools/perf/util/header.c | 27 +++++++++++++++++++++------
> 2 files changed, 33 insertions(+), 18 deletions(-)
>
> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index 32bd102..1a23392 100644
> --- a/tools/perf/perf.h
> +++ b/tools/perf/perf.h
> @@ -6,7 +6,7 @@
> #if defined(__i386__)
> #define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
> #define cpu_relax() asm volatile("rep; nop" ::: "memory");
> -#define CPUINFO_PROC "model name"
> +#define CPUINFO_PROC {"model name"}
> #ifndef __NR_perf_event_open
> # define __NR_perf_event_open 336
> #endif
> @@ -15,7 +15,7 @@
> #if defined(__x86_64__)
> #define rmb() asm volatile("lfence" ::: "memory")
> #define cpu_relax() asm volatile("rep; nop" ::: "memory");
> -#define CPUINFO_PROC "model name"
> +#define CPUINFO_PROC {"model name"}
> #ifndef __NR_perf_event_open
> # define __NR_perf_event_open 298
> #endif
> @@ -25,7 +25,7 @@
> #include "../../arch/powerpc/include/uapi/asm/unistd.h"
> #define rmb() asm volatile ("sync" ::: "memory")
> #define cpu_relax() asm volatile ("" ::: "memory");
> -#define CPUINFO_PROC "cpu"
> +#define CPUINFO_PROC {"cpu"}
> #endif
>
> #ifdef __s390__
> @@ -40,31 +40,31 @@
> # define rmb() asm volatile("" ::: "memory")
> #endif
> #define cpu_relax() asm volatile("" ::: "memory")
> -#define CPUINFO_PROC "cpu type"
> +#define CPUINFO_PROC {"cpu type"}
> #endif
>
> #ifdef __hppa__
> #define rmb() asm volatile("" ::: "memory")
> #define cpu_relax() asm volatile("" ::: "memory");
> -#define CPUINFO_PROC "cpu"
> +#define CPUINFO_PROC {"cpu"}
> #endif
>
> #ifdef __sparc__
> #define rmb() asm volatile("":::"memory")
> #define cpu_relax() asm volatile("":::"memory")
> -#define CPUINFO_PROC "cpu"
> +#define CPUINFO_PROC {"cpu"}
> #endif
>
> #ifdef __alpha__
> #define rmb() asm volatile("mb" ::: "memory")
> #define cpu_relax() asm volatile("" ::: "memory")
> -#define CPUINFO_PROC "cpu model"
> +#define CPUINFO_PROC {"cpu model"}
> #endif
>
> #ifdef __ia64__
> #define rmb() asm volatile ("mf" ::: "memory")
> #define cpu_relax() asm volatile ("hint @pause" ::: "memory")
> -#define CPUINFO_PROC "model name"
> +#define CPUINFO_PROC {"model name"}
> #endif
>
> #ifdef __arm__
> @@ -74,7 +74,7 @@
> */
> #define rmb() ((void(*)(void))0xffff0fa0)()
> #define cpu_relax() asm volatile("":::"memory")
> -#define CPUINFO_PROC "Processor"
> +#define CPUINFO_PROC {"model name", "Processor"}
> #endif
>
> #ifdef __aarch64__
> @@ -91,19 +91,19 @@
> : /* no input */ \
> : "memory")
> #define cpu_relax() asm volatile("" ::: "memory")
> -#define CPUINFO_PROC "cpu model"
> +#define CPUINFO_PROC {"cpu model"}
> #endif
>
> #ifdef __arc__
> #define rmb() asm volatile("" ::: "memory")
> #define cpu_relax() rmb()
> -#define CPUINFO_PROC "Processor"
> +#define CPUINFO_PROC {"Processor"}
> #endif
>
> #ifdef __metag__
> #define rmb() asm volatile("" ::: "memory")
> #define cpu_relax() asm volatile("" ::: "memory")
> -#define CPUINFO_PROC "CPU"
> +#define CPUINFO_PROC {"CPU"}
> #endif
>
> #include <time.h>
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index b59350f..d48f571 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -550,16 +550,12 @@ static int write_version(int fd, struct perf_header *h __maybe_unused,
> return do_write_string(fd, perf_version_string);
> }
>
> -static int write_cpudesc(int fd, struct perf_header *h __maybe_unused,
> - struct perf_evlist *evlist __maybe_unused)
> +static int __write_cpudesc(int fd, const char *cpuinfo_proc)
> {
> -#ifndef CPUINFO_PROC
> -#define CPUINFO_PROC NULL
> -#endif
> FILE *file;
> char *buf = NULL;
> char *s, *p;
> - const char *search = CPUINFO_PROC;
> + const char *search = cpuinfo_proc;
> size_t len = 0;
> int ret = -1;
>
> @@ -611,6 +607,25 @@ done:
> return ret;
> }
>
> +static int write_cpudesc(int fd, struct perf_header *h __maybe_unused,
> + struct perf_evlist *evlist __maybe_unused)
> +{
> +#ifndef CPUINFO_PROC
> +#define CPUINFO_PROC {"model name", }
> +#endif
> + const char *cpuinfo_procs[] = CPUINFO_PROC;
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) {
> + int ret;
> + ret = __write_cpudesc(fd, cpuinfo_procs[i]);
> + if (ret >= 0)
> + return ret;
> + }
> + return -1;
> +}
> +
> +
> static int write_nrcpus(int fd, struct perf_header *h __maybe_unused,
> struct perf_evlist *evlist __maybe_unused)
> {
Em Fri, Oct 24, 2014 at 08:26:13AM +0900, Namhyung Kim escreveu:
> On Wed, 22 Oct 2014 15:40:14 +0800, Wang Nan wrote:
> > After kernel 3.7 (commit b4b8f770eb10a1bccaf8aa0ec1956e2dd7ed1e0a),
> > /proc/cpuinfo replaces 'Processor' to 'model name'. This patch makes
> > CPUINFO_PROC to an array and provides two choices for ARM, makes it
> > compatible for different kernel version.
> > v1 -> v2: minor changes as suggested by Namhyung Kim:
> > - Doesn't pass @h and @evlist to __write_cpudesc;
> > - Coding style fix.
> > Signed-off-by: Wang Nan <[email protected]>
> Acked-by: Namhyung Kim <[email protected]>
So now this will work with older kernels and new ones? Cool, thanks for
working on it, but:
[acme@ssdandy linux]$ patch -p1 < /wb/1.patch
patching file tools/perf/perf.h
Hunk #1 FAILED at 6.
Hunk #2 FAILED at 15.
Hunk #3 FAILED at 25.
Hunk #4 FAILED at 40.
Hunk #5 FAILED at 74.
Hunk #6 FAILED at 91.
6 out of 6 hunks FAILED -- saving rejects to file tools/perf/perf.h.rej
patching file tools/perf/util/header.c
Hunk #1 succeeded at 579 (offset 29 lines).
Hunk #2 succeeded at 636 (offset 29 lines).
[acme@ssdandy linux]$
[acme@ssdandy linux]$ git log --oneline tools/perf/perf.h | head -10
87c43ee perf tools: Export usage string and option table of perf record
72a128a perf tools: Move callchain config from record_opts to callchain_param
73a31b7 perf tools: Move ACCESS_ONCE from perf.h header
82baa0e perf tools: Move sys_perf_event_open function from perf.h
43599d1 perf tools: Move syscall and arch specific defines from perf.h
2c83bc0 perf tools: Move perf_call_graph_mode enum from perf.h
0776eb5 perf tools: Move sample data structures from perf.h
36446f4 perf tools: Remove PR_TASK_PERF_EVENTS_* from perf.h
273a0a7 perf tools: Remove asmlinkage define from perf.h
1b7ae1c perf tools: Remove min define from perf.h
[acme@ssdandy linux]$
This is:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/core
If you don't have time to fix this up, I'll try to find time tomorrow
and do it.
- Arnaldo
Hi Arnaldo,
A have posted a v3 patch based on your git repository. Please refer to:
https://lkml.org/lkml/2014/10/23/711 .
Thanks.
On 2014/10/24 7:53, Arnaldo Carvalho de Melo wrote:
> Em Fri, Oct 24, 2014 at 08:26:13AM +0900, Namhyung Kim escreveu:
>> On Wed, 22 Oct 2014 15:40:14 +0800, Wang Nan wrote:
>>> After kernel 3.7 (commit b4b8f770eb10a1bccaf8aa0ec1956e2dd7ed1e0a),
>>> /proc/cpuinfo replaces 'Processor' to 'model name'. This patch makes
>>> CPUINFO_PROC to an array and provides two choices for ARM, makes it
>>> compatible for different kernel version.
>
>>> v1 -> v2: minor changes as suggested by Namhyung Kim:
>
>>> - Doesn't pass @h and @evlist to __write_cpudesc;
>>> - Coding style fix.
>
>>> Signed-off-by: Wang Nan <[email protected]>
>
>> Acked-by: Namhyung Kim <[email protected]>
>
> So now this will work with older kernels and new ones? Cool, thanks for
> working on it, but:
>
> [acme@ssdandy linux]$ patch -p1 < /wb/1.patch
> patching file tools/perf/perf.h
> Hunk #1 FAILED at 6.
> Hunk #2 FAILED at 15.
> Hunk #3 FAILED at 25.
> Hunk #4 FAILED at 40.
> Hunk #5 FAILED at 74.
> Hunk #6 FAILED at 91.
> 6 out of 6 hunks FAILED -- saving rejects to file tools/perf/perf.h.rej
> patching file tools/perf/util/header.c
> Hunk #1 succeeded at 579 (offset 29 lines).
> Hunk #2 succeeded at 636 (offset 29 lines).
> [acme@ssdandy linux]$
>
> [acme@ssdandy linux]$ git log --oneline tools/perf/perf.h | head -10
> 87c43ee perf tools: Export usage string and option table of perf record
> 72a128a perf tools: Move callchain config from record_opts to callchain_param
> 73a31b7 perf tools: Move ACCESS_ONCE from perf.h header
> 82baa0e perf tools: Move sys_perf_event_open function from perf.h
> 43599d1 perf tools: Move syscall and arch specific defines from perf.h
> 2c83bc0 perf tools: Move perf_call_graph_mode enum from perf.h
> 0776eb5 perf tools: Move sample data structures from perf.h
> 36446f4 perf tools: Remove PR_TASK_PERF_EVENTS_* from perf.h
> 273a0a7 perf tools: Remove asmlinkage define from perf.h
> 1b7ae1c perf tools: Remove min define from perf.h
> [acme@ssdandy linux]$
>
> This is:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/core
>
> If you don't have time to fix this up, I'll try to find time tomorrow
> and do it.
>
> - Arnaldo
>