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Subject[PATCH 32/73] libperf: Move page_size into libperf
Date
We need page_size in libperf, so moving it in there.
Adding libperf_init as a global libperf init functon.

Link: http://lkml.kernel.org/n/tip-g6auuaej31nsusuevuhcgxli@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/lib/core.c | 7 +++++++
tools/perf/lib/include/internal/lib.h | 2 ++
tools/perf/lib/include/perf/core.h | 1 +
tools/perf/lib/lib.c | 2 ++
tools/perf/lib/libperf.map | 1 +
tools/perf/perf.c | 4 ++--
tools/perf/util/util.h | 2 --
7 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/tools/perf/lib/core.c b/tools/perf/lib/core.c
index 29d5e3348718..6689d593c2d1 100644
--- a/tools/perf/lib/core.c
+++ b/tools/perf/lib/core.c
@@ -4,7 +4,9 @@

#include <stdio.h>
#include <stdarg.h>
+#include <unistd.h>
#include <perf/core.h>
+#include <internal/lib.h>
#include "internal.h"

static int __base_pr(enum libperf_print_level level, const char *format,
@@ -32,3 +34,8 @@ void libperf_print(enum libperf_print_level level, const char *format, ...)
__libperf_pr(level, format, args);
va_end(args);
}
+
+void libperf_init(void)
+{
+ page_size = sysconf(_SC_PAGE_SIZE);
+}
diff --git a/tools/perf/lib/include/internal/lib.h b/tools/perf/lib/include/internal/lib.h
index 0b56f1201dc9..9168b7d2a7e1 100644
--- a/tools/perf/lib/include/internal/lib.h
+++ b/tools/perf/lib/include/internal/lib.h
@@ -4,6 +4,8 @@

#include <unistd.h>

+extern unsigned int page_size;
+
ssize_t readn(int fd, void *buf, size_t n);
ssize_t writen(int fd, const void *buf, size_t n);

diff --git a/tools/perf/lib/include/perf/core.h b/tools/perf/lib/include/perf/core.h
index c341a7b2c874..ba2f4e76a3e2 100644
--- a/tools/perf/lib/include/perf/core.h
+++ b/tools/perf/lib/include/perf/core.h
@@ -18,5 +18,6 @@ typedef int (*libperf_print_fn_t)(enum libperf_print_level level,
const char *, va_list ap);

LIBPERF_API void libperf_set_print(libperf_print_fn_t fn);
+LIBPERF_API void libperf_init(void);

#endif /* __LIBPERF_CORE_H */
diff --git a/tools/perf/lib/lib.c b/tools/perf/lib/lib.c
index 2a81819c3b8c..18658931fc71 100644
--- a/tools/perf/lib/lib.c
+++ b/tools/perf/lib/lib.c
@@ -5,6 +5,8 @@
#include <linux/kernel.h>
#include <internal/lib.h>

+unsigned int page_size;
+
static ssize_t ion(bool is_read, int fd, void *buf, size_t n)
{
void *buf_start = buf;
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index dc4d66363bc4..3fbf050b5add 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -1,5 +1,6 @@
LIBPERF_0.0.1 {
global:
+ libperf_init;
libperf_set_print;
perf_cpu_map__dummy_new;
perf_cpu_map__get;
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 1193b923e801..ead18b712d6c 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -25,6 +25,7 @@
#include "perf-sys.h"
#include <api/fs/fs.h>
#include <api/fs/tracing_path.h>
+#include <internal/lib.h>
#include <errno.h>
#include <pthread.h>
#include <signal.h>
@@ -438,8 +439,7 @@ int main(int argc, const char **argv)
exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT);
pager_init(PERF_PAGER_ENVIRONMENT);

- /* The page_size is placed in util object. */
- page_size = sysconf(_SC_PAGE_SIZE);
+ libperf_init();

cmd = extract_argv0_path(argv[0]);
if (!cmd)
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 45a5c6f20197..d6ae394e67c4 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -33,8 +33,6 @@ int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);

size_t hex_width(u64 v);

-extern unsigned int page_size;
-
int sysctl__max_stack(void);

int fetch_kernel_version(unsigned int *puint,
--
2.21.0
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