perf_event_open.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/perf_event_open.2

@@ -240,7 +240,8 @@ struct perf_event_attr {
           exclude_callchain_user   : 1,
                                 /* exclude user callchains */
           mmap2          :  1,  /* include mmap with inode data */
-          comm_exec      :  1,  /* flag comm events that are due to exec */
+          comm_exec      :  1,  /* flag comm events that are
+                                   due to exec */
           use_clockid    :  1,  /* use clockid for time fields */
 
           __reserved_1   : 38;
@@ -983,20 +984,16 @@ with how small this can be.
 
 The values of this are the following:
 .RS
-.TP
-0 -
+.IP 0 3
 .B SAMPLE_IP
 can have arbitrary skid.
-.TP
-1 -
+.IP 1
 .B SAMPLE_IP
 must have constant skid.
-.TP
-2 -
+.IP 2
 .B SAMPLE_IP
 requested to have 0 skid.
-.TP
-3 -
+.IP 3
 .B SAMPLE_IP
 must have 0 skid.
 See also
@@ -1034,6 +1031,7 @@ This may lead to the
 value appearing twice.
 
 The layout is described by this pseudo-structure:
+
 .in +4n
 .nf
 struct sample_id {
@@ -2004,7 +2002,8 @@ struct {
                       /* if PERF_SAMPLE_REGS_USER */
     u64   size;       /* if PERF_SAMPLE_STACK_USER */
     char  data[size]; /* if PERF_SAMPLE_STACK_USER */
-    u64   dyn_size;   /* if PERF_SAMPLE_STACK_USER && size != 0 */
+    u64   dyn_size;   /* if PERF_SAMPLE_STACK_USER &&
+                            size != 0 */
     u64   weight;     /* if PERF_SAMPLE_WEIGHT */
     u64   data_src;   /* if PERF_SAMPLE_DATA_SRC */
     u64   transaction;/* if PERF_SAMPLE_TRANSACTION */
@@ -2756,6 +2755,7 @@ process has created on other processes.
 It enables or disables only
 the group leaders, not any other members in the groups.
 .SS perf_event related configuration files
+
 Files in
 .I /proc/sys/kernel/
 .RS 4
@@ -2764,6 +2764,8 @@ Files in
 The
 .I perf_event_paranoid
 file can be set to restrict access to the performance counters.
+
+.PD 0
 .RS
 .IP 2 4
 allow only user-space measurements (default since Linux 4.6).
@@ -2775,6 +2777,7 @@ allow access to CPU-specific data but not raw tracepoint samples.
 .IP \-1
 no restrictions.
 .RE
+.PD
 .IP
 The existence of the
 .I perf_event_paranoid
@@ -2799,8 +2802,10 @@ Maximum number of pages an unprivileged user can
 .BR mlock (2).
 The default is 516 (kB).
 .RE
+
 Files in
 .I /sys/bus/event_source/devices/
+
 .RS 4
 Since Linux 2.6.34, the kernel supports having multiple PMUs
 available for monitoring.
@@ -3047,7 +3052,7 @@ It was renamed in Linux 2.6.32.
 .SH CONFORMING TO
 This
 .BR perf_event_open ()
-system call Linux- specific
+system call Linux-specific
 and should not be used in programs intended to be portable.
 .SH NOTES
 Glibc does not provide a wrapper for this system call; call it using