perf_counter tools: add 'perf record' command

Move perf-record.c into the perf suite of commands.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Documentation/perf_counter/Documentation/perf-record.txt

+perf-record(1)
+==========
+
+NAME
+----
+perf-record - Run a command and record its profile into output.perf
+
+SYNOPSIS
+--------
+[verse]
+'perf record' [-e <EVENT> | --event=EVENT] [-l] [-a] <command>
+
+DESCRIPTION
+-----------
+This command runs a command and gathers a performance counter profile
+from it, into output.perf - without displaying anything.
+
+This file can then be inspected later on, using 'perf report'.
+
+
+OPTIONS
+-------
+<command>...::
+	Any command you can specify in a shell.
+
+-e::
+--event=::
+                             0:0: cpu-cycles          
+                             0:0: cycles              
+                             0:1: instructions        
+                             0:2: cache-references    
+                             0:3: cache-misses        
+                             0:4: branch-instructions 
+                             0:4: branches            
+                             0:5: branch-misses       
+                             0:6: bus-cycles          
+                             1:0: cpu-clock           
+                             1:1: task-clock          
+                             1:2: page-faults         
+                             1:2: faults              
+                             1:5: minor-faults        
+                             1:6: major-faults        
+                             1:3: context-switches    
+                             1:3: cs                  
+                             1:4: cpu-migrations      
+                             1:4: migrations          
+                           rNNN: raw PMU events (eventsel+umask)
+
+-a::
+        system-wide collection
+
+-l::
+        scale counter values
+
+Configuration
+-------------
+
+EXAMPLES
+--------
+
+SEE ALSO
+--------
+linkperf:git-stat[1]

Documentation/perf_counter/Makefile

@@ -309,6 +309,7 @@ LIB_OBJS += usage.o
 LIB_OBJS += wrapper.o
 
 BUILTIN_OBJS += builtin-help.o
+BUILTIN_OBJS += builtin-record.o
 BUILTIN_OBJS += builtin-stat.o
 BUILTIN_OBJS += builtin-top.o
 

Documentation/perf_counter/perf-record.c → Documentation/perf_counter/builtin-record.c

@@ -81,16 +81,12 @@
 	(void) (&_min1 == &_min2);		\
 	_min1 < _min2 ? _min1 : _min2; })
 
-asmlinkage int sys_perf_counter_open(
+extern asmlinkage int sys_perf_counter_open(
         struct perf_counter_hw_event    *hw_event_uptr          __user,
         pid_t                           pid,
         int                             cpu,
         int                             group_fd,
-        unsigned long                   flags)
-{
-        return syscall(
-                __NR_perf_counter_open, hw_event_uptr, pid, cpu, group_fd, flags);
-}
+        unsigned long                   flags);
 
 #define MAX_COUNTERS			64
 #define MAX_NR_CPUS			256
@@ -119,26 +115,6 @@ const unsigned int default_count[] = {
 	  10000,
 };
 
-static char *hw_event_names[] = {
-	"CPU cycles",
-	"instructions",
-	"cache references",
-	"cache misses",
-	"branches",
-	"branch misses",
-	"bus cycles",
-};
-
-static char *sw_event_names[] = {
-	"cpu clock ticks",
-	"task clock ticks",
-	"pagefaults",
-	"context switches",
-	"CPU migrations",
-	"minor faults",
-	"major faults",
-};
-
 struct event_symbol {
 	__u64 event;
 	char *symbol;
@@ -414,7 +390,7 @@ static void sigchld_handler(int sig)
 		done = 1;
 }
 
-int main(int argc, char *argv[])
+int cmd_record(int argc, const char **argv)
 {
 	struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
 	struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];

Documentation/perf_counter/builtin.h

@@ -14,6 +14,7 @@ extern void prune_packed_objects(int);
 extern int read_line_with_nul(char *buf, int size, FILE *file);
 extern int check_pager_config(const char *cmd);
 
-extern int cmd_top(int argc, const char **argv, const char *prefix);
+extern int cmd_record(int argc, const char **argv, const char *prefix);
 extern int cmd_stat(int argc, const char **argv, const char *prefix);
+extern int cmd_top(int argc, const char **argv, const char *prefix);
 #endif

Documentation/perf_counter/command-list.txt

 # List of known perf commands.
 # command name				category [deprecated] [common]
-perf-top                                mainporcelain common
+perf-record                             mainporcelain common
 perf-stat                               mainporcelain common
+perf-top                                mainporcelain common
 

Documentation/perf_counter/perf.c

@@ -248,8 +248,9 @@ static void handle_internal_command(int argc, const char **argv)
 {
 	const char *cmd = argv[0];
 	static struct cmd_struct commands[] = {
-		{ "top", cmd_top, 0 },
+		{ "record", cmd_record, 0 },
 		{ "stat", cmd_stat, 0 },
+		{ "top", cmd_top, 0 },
 	};
 	int i;
 	static const char ext[] = STRIP_EXTENSION;