1 files changed, 55 insertions, 5 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index bdb41612bfec..599afc4bb67e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -130,8 +130,10 @@ enum perf_event_sample_format {
         PERF_SAMPLE_STREAM_ID                   = 1U << 9,
         PERF_SAMPLE_RAW                         = 1U << 10,
         PERF_SAMPLE_BRANCH_STACK                = 1U << 11,
+        PERF_SAMPLE_REGS_USER                   = 1U << 12,
+        PERF_SAMPLE_STACK_USER                  = 1U << 13,
 
-        PERF_SAMPLE_MAX = 1U << 12,             /* non-ABI */
+        PERF_SAMPLE_MAX = 1U << 14,             /* non-ABI */
 };
 
 /*
@@ -163,6 +165,15 @@ enum perf_branch_sample_type {
          PERF_SAMPLE_BRANCH_HV)
 
 /*
+ * Values to determine ABI of the registers dump.
+ */
+enum perf_sample_regs_abi {
+        PERF_SAMPLE_REGS_ABI_NONE       = 0,
+        PERF_SAMPLE_REGS_ABI_32         = 1,
+        PERF_SAMPLE_REGS_ABI_64         = 2,
+};
+
+/*
  * The format of the data returned by read() on a perf event fd,
  * as specified by attr.read_format:
  *
@@ -194,6 +205,8 @@ enum perf_event_read_format {
 #define PERF_ATTR_SIZE_VER0     64      /* sizeof first published struct */
 #define PERF_ATTR_SIZE_VER1     72      /* add: config2 */
 #define PERF_ATTR_SIZE_VER2     80      /* add: branch_sample_type */
+#define PERF_ATTR_SIZE_VER3     96      /* add: sample_regs_user */
+                                        /* add: sample_stack_user */
 
 /*
  * Hardware event_id to monitor via a performance monitoring event:
@@ -255,7 +268,10 @@ struct perf_event_attr {
                                 exclude_host   :  1, /* don't count in host   */
                                 exclude_guest  :  1, /* don't count in guest  */
 
-                                __reserved_1   : 43;
+                                exclude_callchain_kernel : 1, /* exclude kernel callchains */
+                                exclude_callchain_user   : 1, /* exclude user callchains */
+
+                                __reserved_1   : 41;
 
         union {
                 __u32           wakeup_events;    /* wakeup every n events */
@@ -271,7 +287,21 @@ struct perf_event_attr {
                 __u64           bp_len;
                 __u64           config2; /* extension of config1 */
         };
-        __u64   branch_sample_type; /* enum branch_sample_type */
+        __u64   branch_sample_type; /* enum perf_branch_sample_type */
+
+        /*
+         * Defines set of user regs to dump on samples.
+         * See asm/perf_regs.h for details.
+         */
+        __u64   sample_regs_user;
+
+        /*
+         * Defines size of the user stack to dump on samples.
+         */
+        __u32   sample_stack_user;
+
+        /* Align to u64. */
+        __u32   __reserved_2;
 };
 
 #define perf_flags(attr)        (*(&(attr)->read_format + 1))
@@ -550,6 +580,13 @@ enum perf_event_type {
          *        char                  data[size];}&& PERF_SAMPLE_RAW
          *
          *      { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK
+         *
+         *      { u64                   abi; # enum perf_sample_regs_abi
+         *        u64                   regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER
+         *
+         *      { u64                   size;
+         *        char                  data[size];
+         *        u64                   dyn_size; } && PERF_SAMPLE_STACK_USER
          * };
          */
         PERF_RECORD_SAMPLE                      = 9,
@@ -611,6 +648,7 @@ struct perf_guest_info_callbacks {
 #include <linux/static_key.h>
 #include <linux/atomic.h>
 #include <linux/sysfs.h>
+#include <linux/perf_regs.h>
 #include <asm/local.h>
 
 struct perf_callchain_entry {
@@ -656,6 +694,11 @@ struct perf_branch_stack {
         struct perf_branch_entry        entries[0];
 };
 
+struct perf_regs_user {
+        __u64           abi;
+        struct pt_regs  *regs;
+};
+
 struct task_struct;
 
 /*
@@ -1135,6 +1178,8 @@ struct perf_sample_data {
         struct perf_callchain_entry     *callchain;
         struct perf_raw_record          *raw;
         struct perf_branch_stack        *br_stack;
+        struct perf_regs_user           regs_user;
+        u64                             stack_user_size;
 };
 
 static inline void perf_sample_data_init(struct perf_sample_data *data,
@@ -1144,7 +1189,10 @@ static inline void perf_sample_data_init(struct perf_sample_data *data,
         data->addr = addr;
         data->raw  = NULL;
         data->br_stack = NULL;
-        data->period    = period;
+        data->period = period;
+        data->regs_user.abi = PERF_SAMPLE_REGS_ABI_NONE;
+        data->regs_user.regs = NULL;
+        data->stack_user_size = 0;
 }
 
 extern void perf_output_sample(struct perf_output_handle *handle,
@@ -1292,8 +1340,10 @@ static inline bool has_branch_stack(struct perf_event *event)
 extern int perf_output_begin(struct perf_output_handle *handle,
                              struct perf_event *event, unsigned int size);
 extern void perf_output_end(struct perf_output_handle *handle);
-extern void perf_output_copy(struct perf_output_handle *handle,
+extern unsigned int perf_output_copy(struct perf_output_handle *handle,
                              const void *buf, unsigned int len);
+extern unsigned int perf_output_skip(struct perf_output_handle *handle,
+                                     unsigned int len);
 extern int perf_swevent_get_recursion_context(void);
 extern void perf_swevent_put_recursion_context(int rctx);
 extern void perf_event_enable(struct perf_event *event);