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Commit b6998692 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf env: Adopt perf_header__set_cmdline 



Move this from two globals to perf_env global, that eventually will
be just perf_header->env or something else, to ease the refactoring
series, leave it as a global and go on reading more of its fields,
not as part of the header writing process but as a perf_env init one
that will be used for perf.data-less situations.

Tested-by: default avatarWang Nan <wangnan0@huawei.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-2j78tdf8zn1ci0y6ji15bifj@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent eebd0bfc

tools/perf/util/env.c

+39 −0
Original line number Diff line number Diff line 
#include "env.h"

#include "util.h"



struct perf_env perf_env;



void perf_env__exit(struct perf_env *env)

{

	zfree(&env->hostname);
@@ -17,3 +19,40 @@ void perf_env__exit(struct perf_env *env) 
	zfree(&env->pmu_mappings);

	zfree(&env->cpu);

}



int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])

{

	int i;



	/*

	 * If env->cmdline_argv has already been set, do not override it.  This allows

	 * a command to set the cmdline, parse args and then call another

	 * builtin function that implements a command -- e.g, cmd_kvm calling

	 * cmd_record.

	 */

	if (env->cmdline_argv != NULL)

		return 0;



	/* do not include NULL termination */

	env->cmdline_argv = calloc(argc, sizeof(char *));

	if (env->cmdline_argv == NULL)

		goto out_enomem;



	/*

	 * Must copy argv contents because it gets moved around during option

	 * parsing:

	 */

	for (i = 0; i < argc ; i++) {

		env->cmdline_argv[i] = argv[i];

		if (env->cmdline_argv[i] == NULL)

			goto out_free;

	}



	env->nr_cmdline = argc;



	return 0;

out_free:

	zfree(&env->cmdline_argv);

out_enomem:

	return -ENOMEM;

}

tools/perf/util/env.h

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,10 @@ struct perf_env { 
	struct cpu_topology_map	*cpu;

};



extern struct perf_env perf_env;



void perf_env__exit(struct perf_env *env);



int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);



#endif /* __PERF_ENV_H */

tools/perf/util/header.c

+5 −39
Original line number Diff line number Diff line
@@ -24,9 +24,6 @@ 
#include "build-id.h"

#include "data.h"



static u32 header_argc;

static const char **header_argv;



/*

 * magic2 = "PERFILE2"

 * must be a numerical value to let the endianness
@@ -138,37 +135,6 @@ static char *do_read_string(int fd, struct perf_header *ph) 
	return NULL;

}



int

perf_header__set_cmdline(int argc, const char **argv)

{

	int i;



	/*

	 * If header_argv has already been set, do not override it.

	 * This allows a command to set the cmdline, parse args and

	 * then call another builtin function that implements a

	 * command -- e.g, cmd_kvm calling cmd_record.

	 */

	if (header_argv)

		return 0;



	header_argc = (u32)argc;



	/* do not include NULL termination */

	header_argv = calloc(argc, sizeof(char *));

	if (!header_argv)

		return -ENOMEM;



	/*

	 * must copy argv contents because it gets moved

	 * around during option parsing

	 */

	for (i = 0; i < argc ; i++)

		header_argv[i] = argv[i];



	return 0;

}



static int write_tracing_data(int fd, struct perf_header *h __maybe_unused,

			    struct perf_evlist *evlist)

{
@@ -405,8 +371,8 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused, 
{

	char buf[MAXPATHLEN];

	char proc[32];

	u32 i, n;

	int ret;

	u32 n;

	int i, ret;



	/*

	 * actual atual path to perf binary
@@ -420,7 +386,7 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused, 
	buf[ret] = '\0';



	/* account for binary path */

	n = header_argc + 1;

	n = perf_env.nr_cmdline + 1;



	ret = do_write(fd, &n, sizeof(n));

	if (ret < 0)
@@ -430,8 +396,8 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused, 
	if (ret < 0)

		return ret;



	for (i = 0 ; i < header_argc; i++) {

		ret = do_write_string(fd, header_argv[i]);

	for (i = 0 ; i < perf_env.nr_cmdline; i++) {

		ret = do_write_string(fd, perf_env.cmdline_argv[i]);

		if (ret < 0)

			return ret;

	}

tools/perf/util/parse-options.c

+1 −1
Original line number Diff line number Diff line
@@ -496,7 +496,7 @@ int parse_options_subcommand(int argc, const char **argv, const struct option *o 
{

	struct parse_opt_ctx_t ctx;



	perf_header__set_cmdline(argc, argv);

	perf_env__set_cmdline(&perf_env, argc, argv);



	/* build usage string if it's not provided */

	if (subcommands && !usagestr[0]) {