bpf: raw tracepoint args v6tp_args_v6

in assembler it looks like:
(gdb) disassemble __bpf_trace_xdp_exception
Dump of assembler code for function __bpf_trace_xdp_exception:
   0xffffffff81132080 <+0>:     mov    %ecx,%ecx
   0xffffffff81132082 <+2>:     jmpq   0xffffffff811231f0 <bpf_trace_run3>

where

TRACE_EVENT(xdp_exception,
        TP_PROTO(const struct net_device *dev,
                 const struct bpf_prog *xdp, u32 act),

The above assembler snippet is casting 32-bit 'act' field into 'u64'
to pass into bpf_trace_run3() and all other registers are passed as-is.
So all of ~500 of __bpf_trace_*() functions are only 5-10 _byte_ long
and in total this approach adds 7k bytes to .text and 8k bytes
to .rodata since I want them to appear in kallsyms, so I don't
have to add another 8-byte fields to 'struct trace_event_class'
and 'struct trace_event_call'

Such approach, I think, is the lowest overhead we can possibly have
while calling trace_xdp_exception() from kernel C code and
transitioning into bpf land.
Since many folks are starting to use tracepoint+bpf at speeds of
1M+ events per second this is very valuable optimization.

Since I'm not touching anything on ftrace or perf side,
I'm thinking to extend BPF_PROG_ATTACH command to specify
which tracepoint to attach to.
The user space will look like:

prog_fd = bpf_prog_load(...);
bpf_prog_attach(prog_fd, "xdp_exception");

On the kernel side I will walk kallsyms to
find __tracepoint_xdp_exception record, check that
tp->name == "xdp_exception",
then find __bpf_trace_xdp_exception() address (also in kallsyms),
and finally use tracepoint_probe_register() to connect the two.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

22 files changed, 451 insertions, 109 deletions

diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index d85076223a696d..9c98e5eeef9dce 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -218,7 +218,7 @@ static void xen_set_pmd_hyper(pmd_t *ptr, pmd_t val)
 
 static void xen_set_pmd(pmd_t *ptr, pmd_t val)
 {
-	trace_xen_mmu_set_pmd(ptr, val);
+	trace_xen_mmu_set_pmd(ptr, &val);
 
 	/* If page is not pinned, we can just update the entry
 	   directly */
@@ -277,14 +277,14 @@ static inline void __xen_set_pte(pte_t *ptep, pte_t pteval)
 
 static void xen_set_pte(pte_t *ptep, pte_t pteval)
 {
-	trace_xen_mmu_set_pte(ptep, pteval);
+	trace_xen_mmu_set_pte(ptep, &pteval);
 	__xen_set_pte(ptep, pteval);
 }
 
 static void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
 		    pte_t *ptep, pte_t pteval)
 {
-	trace_xen_mmu_set_pte_at(mm, addr, ptep, pteval);
+	trace_xen_mmu_set_pte_at(mm, addr, ptep, &pteval);
 	__xen_set_pte(ptep, pteval);
 }
 
@@ -292,7 +292,7 @@ pte_t xen_ptep_modify_prot_start(struct mm_struct *mm,
 				 unsigned long addr, pte_t *ptep)
 {
 	/* Just return the pte as-is.  We preserve the bits on commit */
-	trace_xen_mmu_ptep_modify_prot_start(mm, addr, ptep, *ptep);
+	trace_xen_mmu_ptep_modify_prot_start(mm, addr, ptep, ptep);
 	return *ptep;
 }
 
@@ -301,7 +301,7 @@ void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
 {
 	struct mmu_update u;
 
-	trace_xen_mmu_ptep_modify_prot_commit(mm, addr, ptep, pte);
+	trace_xen_mmu_ptep_modify_prot_commit(mm, addr, ptep, &pte);
 	xen_mc_batch();
 
 	u.ptr = virt_to_machine(ptep).maddr | MMU_PT_UPDATE_PRESERVE_AD;
@@ -409,7 +409,7 @@ static void xen_set_pud_hyper(pud_t *ptr, pud_t val)
 
 static void xen_set_pud(pud_t *ptr, pud_t val)
 {
-	trace_xen_mmu_set_pud(ptr, val);
+	trace_xen_mmu_set_pud(ptr, &val);
 
 	/* If page is not pinned, we can just update the entry
 	   directly */
@@ -424,7 +424,7 @@ static void xen_set_pud(pud_t *ptr, pud_t val)
 #ifdef CONFIG_X86_PAE
 static void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
 {
-	trace_xen_mmu_set_pte_atomic(ptep, pte);
+	trace_xen_mmu_set_pte_atomic(ptep, &pte);
 	set_64bit((u64 *)ptep, native_pte_val(pte));
 }
 
@@ -514,7 +514,7 @@ static void xen_set_p4d(p4d_t *ptr, p4d_t val)
 	pgd_t *user_ptr = xen_get_user_pgd((pgd_t *)ptr);
 	pgd_t pgd_val;
 
-	trace_xen_mmu_set_p4d(ptr, (p4d_t *)user_ptr, val);
+	trace_xen_mmu_set_p4d(ptr, (p4d_t *)user_ptr, &val);
 
 	/* If page is not pinned, we can just update the entry
 	   directly */
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index e1169c02eb2bc7..681da1f5191117 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -849,8 +849,8 @@ TRACE_EVENT(i915_flip_complete,
 	    TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
 );
 
-TRACE_EVENT_CONDITION(i915_reg_rw,
-	TP_PROTO(bool write, i915_reg_t reg, u64 val, int len, bool trace),
+TRACE_EVENT_CONDITION(i915_reg_rw__,
+	TP_PROTO(bool write, u32 reg, u64 val, int len, bool trace),
 
 	TP_ARGS(write, reg, val, len, trace),
 
@@ -865,7 +865,7 @@ TRACE_EVENT_CONDITION(i915_reg_rw,
 
 	TP_fast_assign(
 		__entry->val = (u64)val;
-		__entry->reg = i915_mmio_reg_offset(reg);
+		__entry->reg = reg;
 		__entry->write = write;
 		__entry->len = len;
 		),
@@ -876,6 +876,13 @@ TRACE_EVENT_CONDITION(i915_reg_rw,
 		(u32)(__entry->val & 0xffffffff),
 		(u32)(__entry->val >> 32))
 );
+#if !defined(CREATE_TRACE_POINTS) && !defined(TRACE_HEADER_MULTI_READ)
+static inline void trace_i915_reg_rw(bool write, i915_reg_t reg, u64 val,
+				     int len, bool trace)
+{
+	trace_i915_reg_rw__(write, i915_mmio_reg_offset(reg), val, len, trace);
+}
+#endif
 
 TRACE_EVENT(intel_gpu_freq_change,
 	    TP_PROTO(u32 freq),
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index 41fafebe3b0d97..da4aa1a95b110b 100644
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -1153,7 +1153,7 @@ static int get_ctxt_info(struct hfi1_filedata *fd, unsigned long arg, u32 len)
 	cinfo.sdma_ring_size = fd->cq->nentries;
 	cinfo.rcvegr_size = uctxt->egrbufs.rcvtid_size;
 
-	trace_hfi1_ctxt_info(uctxt->dd, uctxt->ctxt, fd->subctxt, cinfo);
+	trace_hfi1_ctxt_info(uctxt->dd, uctxt->ctxt, fd->subctxt, &cinfo);
 	if (copy_to_user((void __user *)arg, &cinfo, len))
 		return -EFAULT;
 
diff --git a/drivers/infiniband/hw/hfi1/trace_ctxts.h b/drivers/infiniband/hw/hfi1/trace_ctxts.h
index 4eb4cc798035ff..e00c8a7d559cd8 100644
--- a/drivers/infiniband/hw/hfi1/trace_ctxts.h
+++ b/drivers/infiniband/hw/hfi1/trace_ctxts.h
@@ -106,7 +106,7 @@ TRACE_EVENT(hfi1_uctxtdata,
 TRACE_EVENT(hfi1_ctxt_info,
 	    TP_PROTO(struct hfi1_devdata *dd, unsigned int ctxt,
 		     unsigned int subctxt,
-		     struct hfi1_ctxt_info cinfo),
+		     struct hfi1_ctxt_info *cinfo),
 	    TP_ARGS(dd, ctxt, subctxt, cinfo),
 	    TP_STRUCT__entry(DD_DEV_ENTRY(dd)
 			     __field(unsigned int, ctxt)
@@ -120,11 +120,11 @@ TRACE_EVENT(hfi1_ctxt_info,
 	    TP_fast_assign(DD_DEV_ASSIGN(dd);
 			    __entry->ctxt = ctxt;
 			    __entry->subctxt = subctxt;
-			    __entry->egrtids = cinfo.egrtids;
-			    __entry->rcvhdrq_cnt = cinfo.rcvhdrq_cnt;
-			    __entry->rcvhdrq_size = cinfo.rcvhdrq_entsize;
-			    __entry->sdma_ring_size = cinfo.sdma_ring_size;
-			    __entry->rcvegr_size = cinfo.rcvegr_size;
+			    __entry->egrtids = cinfo->egrtids;
+			    __entry->rcvhdrq_cnt = cinfo->rcvhdrq_cnt;
+			    __entry->rcvhdrq_size = cinfo->rcvhdrq_entsize;
+			    __entry->sdma_ring_size = cinfo->sdma_ring_size;
+			    __entry->rcvegr_size = cinfo->rcvegr_size;
 			    ),
 	    TP_printk("[%s] ctxt %u:%u " CINFO_FMT,
 		      __get_str(dev),
diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c
index 4fa9ee1d09fa93..0aecb6314e6f38 100644
--- a/drivers/s390/cio/ioasm.c
+++ b/drivers/s390/cio/ioasm.c
@@ -35,7 +35,7 @@ int stsch(struct subchannel_id schid, struct schib *addr)
 	int ccode;
 
 	ccode = __stsch(schid, addr);
-	trace_s390_cio_stsch(schid, addr, ccode);
+	trace_s390_cio_stsch(&schid, addr, ccode);
 
 	return ccode;
 }
@@ -63,7 +63,7 @@ int msch(struct subchannel_id schid, struct schib *addr)
 	int ccode;
 
 	ccode = __msch(schid, addr);
-	trace_s390_cio_msch(schid, addr, ccode);
+	trace_s390_cio_msch(&schid, addr, ccode);
 
 	return ccode;
 }
@@ -88,7 +88,7 @@ int tsch(struct subchannel_id schid, struct irb *addr)
 	int ccode;
 
 	ccode = __tsch(schid, addr);
-	trace_s390_cio_tsch(schid, addr, ccode);
+	trace_s390_cio_tsch(&schid, addr, ccode);
 
 	return ccode;
 }
@@ -115,7 +115,7 @@ int ssch(struct subchannel_id schid, union orb *addr)
 	int ccode;
 
 	ccode = __ssch(schid, addr);
-	trace_s390_cio_ssch(schid, addr, ccode);
+	trace_s390_cio_ssch(&schid, addr, ccode);
 
 	return ccode;
 }
@@ -141,7 +141,7 @@ int csch(struct subchannel_id schid)
 	int ccode;
 
 	ccode = __csch(schid);
-	trace_s390_cio_csch(schid, ccode);
+	trace_s390_cio_csch(&schid, ccode);
 
 	return ccode;
 }
@@ -202,7 +202,7 @@ int rchp(struct chp_id chpid)
 	int ccode;
 
 	ccode = __rchp(chpid);
-	trace_s390_cio_rchp(chpid, ccode);
+	trace_s390_cio_rchp(&chpid, ccode);
 
 	return ccode;
 }
@@ -228,7 +228,7 @@ int rsch(struct subchannel_id schid)
 	int ccode;
 
 	ccode = __rsch(schid);
-	trace_s390_cio_rsch(schid, ccode);
+	trace_s390_cio_rsch(&schid, ccode);
 
 	return ccode;
 }
@@ -253,7 +253,7 @@ int hsch(struct subchannel_id schid)
 	int ccode;
 
 	ccode = __hsch(schid);
-	trace_s390_cio_hsch(schid, ccode);
+	trace_s390_cio_hsch(&schid, ccode);
 
 	return ccode;
 }
@@ -278,7 +278,7 @@ int xsch(struct subchannel_id schid)
 	int ccode;
 
 	ccode = __xsch(schid);
-	trace_s390_cio_xsch(schid, ccode);
+	trace_s390_cio_xsch(&schid, ccode);
 
 	return ccode;
 }
diff --git a/drivers/s390/cio/trace.h b/drivers/s390/cio/trace.h
index 1f8d1c1e566de7..4aa6d1426106fa 100644
--- a/drivers/s390/cio/trace.h
+++ b/drivers/s390/cio/trace.h
@@ -22,7 +22,7 @@
 #include <linux/tracepoint.h>
 
 DECLARE_EVENT_CLASS(s390_class_schib,
-	TP_PROTO(struct subchannel_id schid, struct schib *schib, int cc),
+	TP_PROTO(struct subchannel_id *schid, struct schib *schib, int cc),
 	TP_ARGS(schid, schib, cc),
 	TP_STRUCT__entry(
 		__field(u8, cssid)
@@ -33,9 +33,9 @@ DECLARE_EVENT_CLASS(s390_class_schib,
 		__field(int, cc)
 	),
 	TP_fast_assign(
-		__entry->cssid = schid.cssid;
-		__entry->ssid = schid.ssid;
-		__entry->schno = schid.sch_no;
+		__entry->cssid = schid->cssid;
+		__entry->ssid = schid->ssid;
+		__entry->schno = schid->sch_no;
 		__entry->devno = schib->pmcw.dev;
 		__entry->schib = *schib;
 		__entry->cc = cc;
@@ -60,7 +60,7 @@ DECLARE_EVENT_CLASS(s390_class_schib,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schib, s390_cio_stsch,
-	TP_PROTO(struct subchannel_id schid, struct schib *schib, int cc),
+	TP_PROTO(struct subchannel_id *schid, struct schib *schib, int cc),
 	TP_ARGS(schid, schib, cc)
 );
 
@@ -71,7 +71,7 @@ DEFINE_EVENT(s390_class_schib, s390_cio_stsch,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schib, s390_cio_msch,
-	TP_PROTO(struct subchannel_id schid, struct schib *schib, int cc),
+	TP_PROTO(struct subchannel_id *schid, struct schib *schib, int cc),
 	TP_ARGS(schid, schib, cc)
 );
 
@@ -82,7 +82,7 @@ DEFINE_EVENT(s390_class_schib, s390_cio_msch,
  * @cc: Condition code
  */
 TRACE_EVENT(s390_cio_tsch,
-	TP_PROTO(struct subchannel_id schid, struct irb *irb, int cc),
+	TP_PROTO(struct subchannel_id *schid, struct irb *irb, int cc),
 	TP_ARGS(schid, irb, cc),
 	TP_STRUCT__entry(
 		__field(u8, cssid)
@@ -92,9 +92,9 @@ TRACE_EVENT(s390_cio_tsch,
 		__field(int, cc)
 	),
 	TP_fast_assign(
-		__entry->cssid = schid.cssid;
-		__entry->ssid = schid.ssid;
-		__entry->schno = schid.sch_no;
+		__entry->cssid = schid->cssid;
+		__entry->ssid = schid->ssid;
+		__entry->schno = schid->sch_no;
 		__entry->irb = *irb;
 		__entry->cc = cc;
 	),
@@ -151,7 +151,7 @@ TRACE_EVENT(s390_cio_tpi,
  * @cc: Condition code
  */
 TRACE_EVENT(s390_cio_ssch,
-	TP_PROTO(struct subchannel_id schid, union orb *orb, int cc),
+	TP_PROTO(struct subchannel_id *schid, union orb *orb, int cc),
 	TP_ARGS(schid, orb, cc),
 	TP_STRUCT__entry(
 		__field(u8, cssid)
@@ -161,9 +161,9 @@ TRACE_EVENT(s390_cio_ssch,
 		__field(int, cc)
 	),
 	TP_fast_assign(
-		__entry->cssid = schid.cssid;
-		__entry->ssid = schid.ssid;
-		__entry->schno = schid.sch_no;
+		__entry->cssid = schid->cssid;
+		__entry->ssid = schid->ssid;
+		__entry->schno = schid->sch_no;
 		__entry->orb = *orb;
 		__entry->cc = cc;
 	),
@@ -173,7 +173,7 @@ TRACE_EVENT(s390_cio_ssch,
 );
 
 DECLARE_EVENT_CLASS(s390_class_schid,
-	TP_PROTO(struct subchannel_id schid, int cc),
+	TP_PROTO(struct subchannel_id *schid, int cc),
 	TP_ARGS(schid, cc),
 	TP_STRUCT__entry(
 		__field(u8, cssid)
@@ -182,9 +182,9 @@ DECLARE_EVENT_CLASS(s390_class_schid,
 		__field(int, cc)
 	),
 	TP_fast_assign(
-		__entry->cssid = schid.cssid;
-		__entry->ssid = schid.ssid;
-		__entry->schno = schid.sch_no;
+		__entry->cssid = schid->cssid;
+		__entry->ssid = schid->ssid;
+		__entry->schno = schid->sch_no;
 		__entry->cc = cc;
 	),
 	TP_printk("schid=%x.%x.%04x cc=%d", __entry->cssid, __entry->ssid,
@@ -198,7 +198,7 @@ DECLARE_EVENT_CLASS(s390_class_schid,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schid, s390_cio_csch,
-	TP_PROTO(struct subchannel_id schid, int cc),
+	TP_PROTO(struct subchannel_id *schid, int cc),
 	TP_ARGS(schid, cc)
 );
 
@@ -208,7 +208,7 @@ DEFINE_EVENT(s390_class_schid, s390_cio_csch,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schid, s390_cio_hsch,
-	TP_PROTO(struct subchannel_id schid, int cc),
+	TP_PROTO(struct subchannel_id *schid, int cc),
 	TP_ARGS(schid, cc)
 );
 
@@ -218,7 +218,7 @@ DEFINE_EVENT(s390_class_schid, s390_cio_hsch,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schid, s390_cio_xsch,
-	TP_PROTO(struct subchannel_id schid, int cc),
+	TP_PROTO(struct subchannel_id *schid, int cc),
 	TP_ARGS(schid, cc)
 );
 
@@ -228,7 +228,7 @@ DEFINE_EVENT(s390_class_schid, s390_cio_xsch,
  * @cc: Condition code
  */
 DEFINE_EVENT(s390_class_schid, s390_cio_rsch,
-	TP_PROTO(struct subchannel_id schid, int cc),
+	TP_PROTO(struct subchannel_id *schid, int cc),
 	TP_ARGS(schid, cc)
 );
 
@@ -238,7 +238,7 @@ DEFINE_EVENT(s390_class_schid, s390_cio_rsch,
  * @cc: Condition code
  */
 TRACE_EVENT(s390_cio_rchp,
-	TP_PROTO(struct chp_id chpid, int cc),
+	TP_PROTO(struct chp_id *chpid, int cc),
 	TP_ARGS(chpid, cc),
 	TP_STRUCT__entry(
 		__field(u8, cssid)
@@ -246,8 +246,8 @@ TRACE_EVENT(s390_cio_rchp,
 		__field(int, cc)
 	),
 	TP_fast_assign(
-		__entry->cssid = chpid.cssid;
-		__entry->id = chpid.id;
+		__entry->cssid = chpid->cssid;
+		__entry->id = chpid->id;
 		__entry->cc = cc;
 	),
 	TP_printk("chpid=%x.%02x cc=%d", __entry->cssid, __entry->id,
diff --git a/fs/dax.c b/fs/dax.c
index 0276df90e86c58..6d03ead8e78880 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1429,7 +1429,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
 			goto finish_iomap;
 		}
 
-		trace_dax_pmd_insert_mapping(inode, vmf, PMD_SIZE, pfn, entry);
+		trace_dax_pmd_insert_mapping(inode, vmf, PMD_SIZE, &pfn, entry);
 		result = vmf_insert_pfn_pmd(vma, vmf->address, vmf->pmd, pfn,
 					    write);
 		break;
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 8a1442c4e5131f..6b5ab510fdeabe 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -546,6 +546,53 @@ extern void ftrace_profile_free_filter(struct perf_event *event);
 void perf_trace_buf_update(void *record, u16 type);
 void *perf_trace_buf_alloc(int size, struct pt_regs **regs, int *rctxp);
 
+void bpf_trace_run1(struct bpf_prog *prog, u64 arg1);
+void bpf_trace_run2(struct bpf_prog *prog, u64 arg1, u64 arg2);
+void bpf_trace_run3(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3);
+void bpf_trace_run4(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4);
+void bpf_trace_run5(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5);
+void bpf_trace_run6(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6);
+void bpf_trace_run7(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7);
+void bpf_trace_run8(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		    u64 arg8);
+void bpf_trace_run9(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		    u64 arg8, u64 arg9);
+void bpf_trace_run10(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10);
+void bpf_trace_run11(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11);
+void bpf_trace_run12(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12);
+void bpf_trace_run13(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13);
+void bpf_trace_run14(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13, u64 arg14);
+void bpf_trace_run15(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13, u64 arg14, u64 arg15);
+void bpf_trace_run16(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13, u64 arg14, u64 arg15, u64 arg16);
+void bpf_trace_run17(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13, u64 arg14, u64 arg15, u64 arg16, u64 arg17);
 void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx,
 			       struct trace_event_call *call, u64 count,
 			       struct pt_regs *regs, struct hlist_head *head,
diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h
index 64ed7064f1fa65..39a283c61c51ca 100644
--- a/include/linux/tracepoint-defs.h
+++ b/include/linux/tracepoint-defs.h
@@ -33,6 +33,7 @@ struct tracepoint {
 	int (*regfunc)(void);
 	void (*unregfunc)(void);
 	struct tracepoint_func __rcu *funcs;
+	u32 num_args;
 };
 
 #endif
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index c94f466d57ef1e..2fbcd8e4057523 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -40,9 +40,9 @@ tracepoint_probe_register_prio(struct tracepoint *tp, void *probe, void *data,
 			       int prio);
 extern int
 tracepoint_probe_unregister(struct tracepoint *tp, void *probe, void *data);
-extern void
-for_each_kernel_tracepoint(void (*fct)(struct tracepoint *tp, void *priv),
-		void *priv);
+extern void *
+for_each_kernel_tracepoint(void *(*fct)(struct tracepoint *tp, void *priv),
+			   void *priv);
 
 #ifdef CONFIG_MODULES
 struct tp_module {
@@ -225,23 +225,27 @@ extern void syscall_unregfunc(void);
 		return static_key_false(&__tracepoint_##name.key);	\
 	}
 
+#define ___FN_COUNT(fn,n0,n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,n14,n15,n16,n,...) fn##n
+#define __FN_COUNT(fn,...) ___FN_COUNT(fn,##__VA_ARGS__,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)
+#define __COUNT(...) __FN_COUNT(/**/,##__VA_ARGS__)
+
 /*
  * We have no guarantee that gcc and the linker won't up-align the tracepoint
  * structures, so we create an array of pointers that will be used for iteration
  * on the tracepoints.
  */
-#define DEFINE_TRACE_FN(name, reg, unreg)				 \
+#define DEFINE_TRACE_FN(name, reg, unreg, num_args)			 \
 	static const char __tpstrtab_##name[]				 \
 	__attribute__((section("__tracepoints_strings"))) = #name;	 \
 	struct tracepoint __tracepoint_##name				 \
 	__attribute__((section("__tracepoints"))) =			 \
-		{ __tpstrtab_##name, STATIC_KEY_INIT_FALSE, reg, unreg, NULL };\
+		{ __tpstrtab_##name, STATIC_KEY_INIT_FALSE, reg, unreg, NULL, num_args };\
 	static struct tracepoint * const __tracepoint_ptr_##name __used	 \
 	__attribute__((section("__tracepoints_ptrs"))) =		 \
 		&__tracepoint_##name;
 
-#define DEFINE_TRACE(name)						\
-	DEFINE_TRACE_FN(name, NULL, NULL);
+#define DEFINE_TRACE(name, num_args)					\
+	DEFINE_TRACE_FN(name, NULL, NULL, num_args);
 
 #define EXPORT_TRACEPOINT_SYMBOL_GPL(name)				\
 	EXPORT_SYMBOL_GPL(__tracepoint_##name)
@@ -275,8 +279,8 @@ extern void syscall_unregfunc(void);
 		return false;						\
 	}
 
-#define DEFINE_TRACE_FN(name, reg, unreg)
-#define DEFINE_TRACE(name)
+#define DEFINE_TRACE_FN(name, reg, unreg, num_args)
+#define DEFINE_TRACE(name, num_args)
 #define EXPORT_TRACEPOINT_SYMBOL_GPL(name)
 #define EXPORT_TRACEPOINT_SYMBOL(name)
 
diff --git a/include/trace/bpf_probe.h b/include/trace/bpf_probe.h
new file mode 100644
index 00000000000000..cfbdf6082a959e
--- /dev/null
+++ b/include/trace/bpf_probe.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#undef TRACE_SYSTEM_VAR
+
+#ifdef CONFIG_BPF_EVENTS
+
+#undef __entry
+#define __entry entry
+
+#undef __get_dynamic_array
+#define __get_dynamic_array(field)	\
+		((void *)__entry + (__entry->__data_loc_##field & 0xffff))
+
+#undef __get_dynamic_array_len
+#define __get_dynamic_array_len(field)	\
+		((__entry->__data_loc_##field >> 16) & 0xffff)
+
+#undef __get_str
+#define __get_str(field) ((char *)__get_dynamic_array(field))
+
+#undef __get_bitmask
+#define __get_bitmask(field) (char *)__get_dynamic_array(field)
+
+#undef __perf_count
+#define __perf_count(c)	(c)
+
+#undef __perf_task
+#define __perf_task(t)	(t)
+
+/*
+ * cast any interger or pointer type to u64 without warnings
+ * on 32 and 64 bit archs
+ */
+#define __CAST_TO_U64(expr) \
+	(u64) __builtin_choose_expr(sizeof(long) < sizeof(expr), \
+				    (expr), \
+				    (long) expr)
+#define __CAST1(a,...) __CAST_TO_U64(a)
+#define __CAST2(a,...) __CAST_TO_U64(a), __CAST1(__VA_ARGS__)
+#define __CAST3(a,...) __CAST_TO_U64(a), __CAST2(__VA_ARGS__)
+#define __CAST4(a,...) __CAST_TO_U64(a), __CAST3(__VA_ARGS__)
+#define __CAST5(a,...) __CAST_TO_U64(a), __CAST4(__VA_ARGS__)
+#define __CAST6(a,...) __CAST_TO_U64(a), __CAST5(__VA_ARGS__)
+#define __CAST7(a,...) __CAST_TO_U64(a), __CAST6(__VA_ARGS__)
+#define __CAST8(a,...) __CAST_TO_U64(a), __CAST7(__VA_ARGS__)
+#define __CAST9(a,...) __CAST_TO_U64(a), __CAST8(__VA_ARGS__)
+#define __CAST10(a,...) __CAST_TO_U64(a), __CAST9(__VA_ARGS__)
+#define __CAST11(a,...) __CAST_TO_U64(a), __CAST10(__VA_ARGS__)
+#define __CAST12(a,...) __CAST_TO_U64(a), __CAST11(__VA_ARGS__)
+#define __CAST13(a,...) __CAST_TO_U64(a), __CAST12(__VA_ARGS__)
+#define __CAST14(a,...) __CAST_TO_U64(a), __CAST13(__VA_ARGS__)
+#define __CAST15(a,...) __CAST_TO_U64(a), __CAST14(__VA_ARGS__)
+#define __CAST16(a,...) __CAST_TO_U64(a), __CAST15(__VA_ARGS__)
+#define __CAST17(a,...) __CAST_TO_U64(a), __CAST16(__VA_ARGS__)
+
+#define CAST_TO_U64(...) __FN_COUNT(__CAST,##__VA_ARGS__)(__VA_ARGS__)
+
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
+/* no 'static' here. The bpf probe functions are global */		\
+notrace void								\
+__bpf_trace_##call(void *__data, proto)					\
+{									\
+	struct bpf_prog *prog = __data;					\
+	\
+	__FN_COUNT(bpf_trace_run, args)(prog, CAST_TO_U64(args));	\
+}
+
+/*
+ * This part is compiled out, it is only here as a build time check
+ * to make sure that if the tracepoint handling changes, the
+ * bpf probe will fail to compile unless it too is updated.
+ */
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, call, proto, args)			\
+static inline void bpf_test_probe_##call(void)				\
+{									\
+	check_trace_callback_type_##call(__bpf_trace_##template);	\
+}
+
+
+#undef DEFINE_EVENT_PRINT
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
+	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#endif /* CONFIG_BPF_EVENTS */
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index d9e3d4aa3f6e3b..3bbd3b88177f1e 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -25,7 +25,7 @@
 
 #undef TRACE_EVENT
 #define TRACE_EVENT(name, proto, args, tstruct, assign, print)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, __COUNT(args))
 
 #undef TRACE_EVENT_CONDITION
 #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
@@ -39,24 +39,24 @@
 #undef TRACE_EVENT_FN
 #define TRACE_EVENT_FN(name, proto, args, tstruct,		\
 		assign, print, reg, unreg)			\
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, __COUNT(args))
 
 #undef TRACE_EVENT_FN_COND
 #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct,		\
 		assign, print, reg, unreg)			\
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, __COUNT(args))
 
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args) \
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, __COUNT(args))
 
 #undef DEFINE_EVENT_FN
 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
-	DEFINE_TRACE_FN(name, reg, unreg)
+	DEFINE_TRACE_FN(name, reg, unreg, __COUNT(args))
 
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, __COUNT(args))
 
 #undef DEFINE_EVENT_CONDITION
 #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
@@ -64,7 +64,7 @@
 
 #undef DECLARE_TRACE
 #define DECLARE_TRACE(name, proto, args)	\
-	DEFINE_TRACE(name)
+	DEFINE_TRACE(name, __COUNT(args))
 
 #undef TRACE_INCLUDE
 #undef __TRACE_INCLUDE
@@ -95,6 +95,7 @@
 #ifdef TRACEPOINTS_ENABLED
 #include <trace/trace_events.h>
 #include <trace/perf.h>
+#include <trace/bpf_probe.h>
 #endif
 
 #undef TRACE_EVENT
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 06c87f9f720c2e..795698925d206e 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -491,7 +491,7 @@ DEFINE_EVENT(f2fs__truncate_node, f2fs_truncate_node,
 
 TRACE_EVENT(f2fs_truncate_partial_nodes,
 
-	TP_PROTO(struct inode *inode, nid_t nid[], int depth, int err),
+	TP_PROTO(struct inode *inode, nid_t *nid, int depth, int err),
 
 	TP_ARGS(inode, nid, depth, err),
 
diff --git a/include/trace/events/fs_dax.h b/include/trace/events/fs_dax.h
index 97b09fcf7e5287..5a6a8285750f5f 100644
--- a/include/trace/events/fs_dax.h
+++ b/include/trace/events/fs_dax.h
@@ -104,7 +104,7 @@ DEFINE_PMD_LOAD_HOLE_EVENT(dax_pmd_load_hole_fallback);
 
 DECLARE_EVENT_CLASS(dax_pmd_insert_mapping_class,
 	TP_PROTO(struct inode *inode, struct vm_fault *vmf,
-		long length, pfn_t pfn, void *radix_entry),
+		long length, pfn_t *pfn, void *radix_entry),
 	TP_ARGS(inode, vmf, length, pfn, radix_entry),
 	TP_STRUCT__entry(
 		__field(unsigned long, ino)
@@ -123,7 +123,7 @@ DECLARE_EVENT_CLASS(dax_pmd_insert_mapping_class,
 		__entry->address = vmf->address;
 		__entry->write = vmf->flags & FAULT_FLAG_WRITE;
 		__entry->length = length;
-		__entry->pfn_val = pfn.val;
+		__entry->pfn_val = pfn->val;
 		__entry->radix_entry = radix_entry;
 	),
 	TP_printk("dev %d:%d ino %#lx %s %s address %#lx length %#lx "
@@ -145,7 +145,7 @@ DECLARE_EVENT_CLASS(dax_pmd_insert_mapping_class,
 #define DEFINE_PMD_INSERT_MAPPING_EVENT(name) \
 DEFINE_EVENT(dax_pmd_insert_mapping_class, name, \
 	TP_PROTO(struct inode *inode, struct vm_fault *vmf, \
-		long length, pfn_t pfn, void *radix_entry), \
+		long length, pfn_t *pfn, void *radix_entry), \
 	TP_ARGS(inode, vmf, length, pfn, radix_entry))
 
 DEFINE_PMD_INSERT_MAPPING_EVENT(dax_pmd_insert_mapping);
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index 0b50fda80db0e0..4b463294306f95 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -436,7 +436,7 @@ TRACE_EVENT(rcu_fqs,
  */
 TRACE_EVENT(rcu_dyntick,
 
-	TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks),
+	TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t *dynticks),
 
 	TP_ARGS(polarity, oldnesting, newnesting, dynticks),
 
@@ -451,7 +451,7 @@ TRACE_EVENT(rcu_dyntick,
 		__entry->polarity = polarity;
 		__entry->oldnesting = oldnesting;
 		__entry->newnesting = newnesting;
-		__entry->dynticks = atomic_read(&dynticks);
+		__entry->dynticks = atomic_read(dynticks);
 	),
 
 	TP_printk("%s %lx %lx %#3x", __entry->polarity,
diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h
index b8adf05c534e72..d1965815d9cfdd 100644
--- a/include/trace/events/xen.h
+++ b/include/trace/events/xen.h
@@ -128,14 +128,14 @@ TRACE_EVENT(xen_mc_extend_args,
 TRACE_DEFINE_SIZEOF(pteval_t);
 /* mmu */
 DECLARE_EVENT_CLASS(xen_mmu__set_pte,
-	    TP_PROTO(pte_t *ptep, pte_t pteval),
+	    TP_PROTO(pte_t *ptep, pte_t *pteval),
 	    TP_ARGS(ptep, pteval),
 	    TP_STRUCT__entry(
 		    __field(pte_t *, ptep)
 		    __field(pteval_t, pteval)
 		    ),
 	    TP_fast_assign(__entry->ptep = ptep;
-			   __entry->pteval = pteval.pte),
+			   __entry->pteval = pteval->pte),
 	    TP_printk("ptep %p pteval %0*llx (raw %0*llx)",
 		      __entry->ptep,
 		      (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
@@ -144,14 +144,14 @@ DECLARE_EVENT_CLASS(xen_mmu__set_pte,
 
 #define DEFINE_XEN_MMU_SET_PTE(name)				\
 	DEFINE_EVENT(xen_mmu__set_pte, name,			\
-		     TP_PROTO(pte_t *ptep, pte_t pteval),	\
+		     TP_PROTO(pte_t *ptep, pte_t *pteval),	\
 		     TP_ARGS(ptep, pteval))
 
 DEFINE_XEN_MMU_SET_PTE(xen_mmu_set_pte);
 
 TRACE_EVENT(xen_mmu_set_pte_at,
 	    TP_PROTO(struct mm_struct *mm, unsigned long addr,
-		     pte_t *ptep, pte_t pteval),
+		     pte_t *ptep, pte_t *pteval),
 	    TP_ARGS(mm, addr, ptep, pteval),
 	    TP_STRUCT__entry(
 		    __field(struct mm_struct *, mm)
@@ -162,7 +162,7 @@ TRACE_EVENT(xen_mmu_set_pte_at,
 	    TP_fast_assign(__entry->mm = mm;
 			   __entry->addr = addr;
 			   __entry->ptep = ptep;
-			   __entry->pteval = pteval.pte),
+			   __entry->pteval = pteval->pte),
 	    TP_printk("mm %p addr %lx ptep %p pteval %0*llx (raw %0*llx)",
 		      __entry->mm, __entry->addr, __entry->ptep,
 		      (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
@@ -172,14 +172,14 @@ TRACE_EVENT(xen_mmu_set_pte_at,
 TRACE_DEFINE_SIZEOF(pmdval_t);
 
 TRACE_EVENT(xen_mmu_set_pmd,
-	    TP_PROTO(pmd_t *pmdp, pmd_t pmdval),
+	    TP_PROTO(pmd_t *pmdp, pmd_t *pmdval),
 	    TP_ARGS(pmdp, pmdval),
 	    TP_STRUCT__entry(
 		    __field(pmd_t *, pmdp)
 		    __field(pmdval_t, pmdval)
 		    ),
 	    TP_fast_assign(__entry->pmdp = pmdp;
-			   __entry->pmdval = pmdval.pmd),
+			   __entry->pmdval = pmdval->pmd),
 	    TP_printk("pmdp %p pmdval %0*llx (raw %0*llx)",
 		      __entry->pmdp,
 		      (int)sizeof(pmdval_t) * 2, (unsigned long long)pmd_val(native_make_pmd(__entry->pmdval)),
@@ -220,14 +220,14 @@ TRACE_EVENT(xen_mmu_pmd_clear,
 TRACE_DEFINE_SIZEOF(pudval_t);
 
 TRACE_EVENT(xen_mmu_set_pud,
-	    TP_PROTO(pud_t *pudp, pud_t pudval),
+	    TP_PROTO(pud_t *pudp, pud_t *pudval),
 	    TP_ARGS(pudp, pudval),
 	    TP_STRUCT__entry(
 		    __field(pud_t *, pudp)
 		    __field(pudval_t, pudval)
 		    ),
 	    TP_fast_assign(__entry->pudp = pudp;
-			   __entry->pudval = native_pud_val(pudval)),
+			   __entry->pudval = native_pud_val(*pudval)),
 	    TP_printk("pudp %p pudval %0*llx (raw %0*llx)",
 		      __entry->pudp,
 		      (int)sizeof(pudval_t) * 2, (unsigned long long)pud_val(native_make_pud(__entry->pudval)),
@@ -237,7 +237,7 @@ TRACE_EVENT(xen_mmu_set_pud,
 TRACE_DEFINE_SIZEOF(p4dval_t);
 
 TRACE_EVENT(xen_mmu_set_p4d,
-	    TP_PROTO(p4d_t *p4dp, p4d_t *user_p4dp, p4d_t p4dval),
+	    TP_PROTO(p4d_t *p4dp, p4d_t *user_p4dp, p4d_t *p4dval),
 	    TP_ARGS(p4dp, user_p4dp, p4dval),
 	    TP_STRUCT__entry(
 		    __field(p4d_t *, p4dp)
@@ -246,7 +246,7 @@ TRACE_EVENT(xen_mmu_set_p4d,
 		    ),
 	    TP_fast_assign(__entry->p4dp = p4dp;
 			   __entry->user_p4dp = user_p4dp;
-			   __entry->p4dval = p4d_val(p4dval)),
+			   __entry->p4dval = p4d_val(*p4dval)),
 	    TP_printk("p4dp %p user_p4dp %p p4dval %0*llx (raw %0*llx)",
 		      __entry->p4dp, __entry->user_p4dp,
 		      (int)sizeof(p4dval_t) * 2, (unsigned long long)pgd_val(native_make_pgd(__entry->p4dval)),
@@ -255,14 +255,14 @@ TRACE_EVENT(xen_mmu_set_p4d,
 #else
 
 TRACE_EVENT(xen_mmu_set_pud,
-	    TP_PROTO(pud_t *pudp, pud_t pudval),
+	    TP_PROTO(pud_t *pudp, pud_t *pudval),
 	    TP_ARGS(pudp, pudval),
 	    TP_STRUCT__entry(
 		    __field(pud_t *, pudp)
 		    __field(pudval_t, pudval)
 		    ),
 	    TP_fast_assign(__entry->pudp = pudp;
-			   __entry->pudval = native_pud_val(pudval)),
+			   __entry->pudval = native_pud_val(*pudval)),
 	    TP_printk("pudp %p pudval %0*llx (raw %0*llx)",
 		      __entry->pudp,
 		      (int)sizeof(pudval_t) * 2, (unsigned long long)pgd_val(native_make_pgd(__entry->pudval)),
@@ -273,7 +273,7 @@ TRACE_EVENT(xen_mmu_set_pud,
 
 DECLARE_EVENT_CLASS(xen_mmu_ptep_modify_prot,
 	    TP_PROTO(struct mm_struct *mm, unsigned long addr,
-		     pte_t *ptep, pte_t pteval),
+		     pte_t *ptep, pte_t *pteval),
 	    TP_ARGS(mm, addr, ptep, pteval),
 	    TP_STRUCT__entry(
 		    __field(struct mm_struct *, mm)
@@ -284,7 +284,7 @@ DECLARE_EVENT_CLASS(xen_mmu_ptep_modify_prot,
 	    TP_fast_assign(__entry->mm = mm;
 			   __entry->addr = addr;
 			   __entry->ptep = ptep;
-			   __entry->pteval = pteval.pte),
+			   __entry->pteval = pteval->pte),
 	    TP_printk("mm %p addr %lx ptep %p pteval %0*llx (raw %0*llx)",
 		      __entry->mm, __entry->addr, __entry->ptep,
 		      (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
@@ -293,7 +293,7 @@ DECLARE_EVENT_CLASS(xen_mmu_ptep_modify_prot,
 #define DEFINE_XEN_MMU_PTEP_MODIFY_PROT(name)				\
 	DEFINE_EVENT(xen_mmu_ptep_modify_prot, name,			\
 		     TP_PROTO(struct mm_struct *mm, unsigned long addr,	\
-			      pte_t *ptep, pte_t pteval),		\
+			      pte_t *ptep, pte_t *pteval),		\
 		     TP_ARGS(mm, addr, ptep, pteval))
 
 DEFINE_XEN_MMU_PTEP_MODIFY_PROT(xen_mmu_ptep_modify_prot_start);
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index db6bdc37512683..11ac17f78d9442 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -133,6 +133,7 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_SOCK_OPS,
 	BPF_PROG_TYPE_SK_SKB,
 	BPF_PROG_TYPE_CGROUP_DEVICE,
+	BPF_PROG_TYPE_RAW_TRACEPOINT,
 };
 
 enum bpf_attach_type {
@@ -143,6 +144,7 @@ enum bpf_attach_type {
 	BPF_SK_SKB_STREAM_PARSER,
 	BPF_SK_SKB_STREAM_VERDICT,
 	BPF_CGROUP_DEVICE,
+	BPF_RAW_TRACEPOINT,
 	__MAX_BPF_ATTACH_TYPE
 };
 
@@ -1106,4 +1108,8 @@ struct bpf_cgroup_dev_ctx {
 	__u32 minor;
 };
 
+struct bpf_raw_tp_ctx {
+	__u64 args[16];
+};
+
 #endif /* _UAPI__LINUX_BPF_H__ */
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 491bdf39f276cd..43c0f899f78c8a 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -772,7 +772,7 @@ static void rcu_eqs_enter(bool user)
 	}
 
 	lockdep_assert_irqs_disabled();
-	trace_rcu_dyntick(TPS("Start"), rdtp->dynticks_nesting, 0, rdtp->dynticks);
+	trace_rcu_dyntick(TPS("Start"), rdtp->dynticks_nesting, 0, &rdtp->dynticks);
 	WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !user && !is_idle_task(current));
 	for_each_rcu_flavor(rsp) {
 		rdp = this_cpu_ptr(rsp->rda);
@@ -848,14 +848,14 @@ void rcu_nmi_exit(void)
 	 * leave it in non-RCU-idle state.
 	 */
 	if (rdtp->dynticks_nmi_nesting != 1) {
-		trace_rcu_dyntick(TPS("--="), rdtp->dynticks_nmi_nesting, rdtp->dynticks_nmi_nesting - 2, rdtp->dynticks);
+		trace_rcu_dyntick(TPS("--="), rdtp->dynticks_nmi_nesting, rdtp->dynticks_nmi_nesting - 2, &rdtp->dynticks);
 		WRITE_ONCE(rdtp->dynticks_nmi_nesting, /* No store tearing. */
 			   rdtp->dynticks_nmi_nesting - 2);
 		return;
 	}
 
 	/* This NMI interrupted an RCU-idle CPU, restore RCU-idleness. */
-	trace_rcu_dyntick(TPS("Startirq"), rdtp->dynticks_nmi_nesting, 0, rdtp->dynticks);
+	trace_rcu_dyntick(TPS("Startirq"), rdtp->dynticks_nmi_nesting, 0, &rdtp->dynticks);
 	WRITE_ONCE(rdtp->dynticks_nmi_nesting, 0); /* Avoid store tearing. */
 	rcu_dynticks_eqs_enter();
 }
@@ -930,7 +930,7 @@ static void rcu_eqs_exit(bool user)
 	rcu_dynticks_task_exit();
 	rcu_dynticks_eqs_exit();
 	rcu_cleanup_after_idle();
-	trace_rcu_dyntick(TPS("End"), rdtp->dynticks_nesting, 1, rdtp->dynticks);
+	trace_rcu_dyntick(TPS("End"), rdtp->dynticks_nesting, 1, &rdtp->dynticks);
 	WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !user && !is_idle_task(current));
 	WRITE_ONCE(rdtp->dynticks_nesting, 1);
 	WRITE_ONCE(rdtp->dynticks_nmi_nesting, DYNTICK_IRQ_NONIDLE);
@@ -1004,7 +1004,7 @@ void rcu_nmi_enter(void)
 	}
 	trace_rcu_dyntick(incby == 1 ? TPS("Endirq") : TPS("++="),
 			  rdtp->dynticks_nmi_nesting,
-			  rdtp->dynticks_nmi_nesting + incby, rdtp->dynticks);
+			  rdtp->dynticks_nmi_nesting + incby, &rdtp->dynticks);
 	WRITE_ONCE(rdtp->dynticks_nmi_nesting, /* Prevent store tearing. */
 		   rdtp->dynticks_nmi_nesting + incby);
 	barrier();
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index fc2838ac8b7877..41d79d8504f1c1 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -882,3 +882,187 @@ int perf_event_query_prog_array(struct perf_event *event, void __user *info)
 
 	return ret;
 }
+
+static __always_inline
+void __bpf_trace_run(struct bpf_prog *prog, u64 *args)
+{
+}
+
+#define EVAL1(FN, X) FN(X)
+#define EVAL2(FN, X, Y...) FN(X) EVAL1(FN, Y)
+#define EVAL3(FN, X, Y...) FN(X) EVAL2(FN, Y)
+#define EVAL4(FN, X, Y...) FN(X) EVAL3(FN, Y)
+#define EVAL5(FN, X, Y...) FN(X) EVAL4(FN, Y)
+#define EVAL6(FN, X, Y...) FN(X) EVAL5(FN, Y)
+
+#define COPY(X) args[X - 1] = arg##X;
+
+void bpf_trace_run1(struct bpf_prog *prog, u64 arg1)
+{
+	u64 args[1];
+
+	EVAL1(COPY, 1);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run1);
+void bpf_trace_run2(struct bpf_prog *prog, u64 arg1, u64 arg2)
+{
+	u64 args[2];
+
+	EVAL2(COPY, 1, 2);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run2);
+void bpf_trace_run3(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3)
+{
+	u64 args[3];
+
+	EVAL3(COPY, 1, 2, 3);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run3);
+void bpf_trace_run4(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4)
+{
+	u64 args[4];
+
+	EVAL4(COPY, 1, 2, 3, 4);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run4);
+void bpf_trace_run5(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5)
+{
+	u64 args[5];
+
+	EVAL5(COPY, 1, 2, 3, 4, 5);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run5);
+void bpf_trace_run6(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6)
+{
+	u64 args[6];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run6);
+void bpf_trace_run7(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
+{
+	u64 args[7];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL1(COPY, 7);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run7);
+void bpf_trace_run8(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		    u64 arg8)
+{
+	u64 args[8];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL2(COPY, 7, 8);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run8);
+void bpf_trace_run9(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		    u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		    u64 arg8, u64 arg9)
+{
+	u64 args[9];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL3(COPY, 7, 8, 9);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run9);
+void bpf_trace_run10(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10)
+{
+	u64 args[10];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL4(COPY, 7, 8, 9, 10);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run10);
+void bpf_trace_run11(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11)
+{
+	u64 args[11];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL5(COPY, 7, 8, 9, 10, 11);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run11);
+void bpf_trace_run12(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12)
+{
+	u64 args[12];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL6(COPY, 7, 8, 9, 10, 11, 12);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run12);
+void bpf_trace_run17(struct bpf_prog *prog, u64 arg1, u64 arg2,
+		     u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
+		     u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12,
+		     u64 arg13, u64 arg14, u64 arg15, u64 arg16, u64 arg17)
+{
+	u64 args[17];
+
+	EVAL6(COPY, 1, 2, 3, 4, 5, 6);
+	EVAL6(COPY, 7, 8, 9, 10, 11, 12);
+	EVAL5(COPY, 13, 14, 15, 16, 17);
+	__bpf_trace_run(prog, args);
+}
+EXPORT_SYMBOL_GPL(bpf_trace_run17);
+
+static void *__find_tp(struct tracepoint *tp, void *priv)
+{
+	char *name = priv;
+
+	if (!strcmp(tp->name, name))
+		return tp;
+	return NULL;
+}
+
+int bpf_probe_register(char *name, struct bpf_prog *prog)
+{
+	struct tracepoint *tp;
+	unsigned long addr;
+	char buf[128];
+	int err;
+
+	tp = for_each_kernel_tracepoint(__find_tp, name);
+	if (!tp)
+		return -ENOENT;
+
+	/*
+	 * check that program doesn't access arguments beyond what's
+	 * available in this tracepoint
+	 */
+	if (prog->aux->max_ctx_offset > tp->num_args * sizeof(u64))
+		return -EINVAL;
+
+	snprintf(buf, sizeof(buf), "__bpf_trace_%s", name);
+	addr = kallsyms_lookup_name(buf);
+	if (!addr)
+		return -ENOENT;
+
+	err = tracepoint_probe_register(tp, (void *)addr, prog);
+	if (err)
+		return err;
+	return 0;
+}
+
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 671b134573876d..3f2dc5738c2bd1 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -502,17 +502,22 @@ static __init int init_tracepoints(void)
 __initcall(init_tracepoints);
 #endif /* CONFIG_MODULES */
 
-static void for_each_tracepoint_range(struct tracepoint * const *begin,
-		struct tracepoint * const *end,
-		void (*fct)(struct tracepoint *tp, void *priv),
-		void *priv)
+static void *for_each_tracepoint_range(struct tracepoint * const *begin,
+				       struct tracepoint * const *end,
+				       void *(*fct)(struct tracepoint *tp, void *priv),
+				       void *priv)
 {
 	struct tracepoint * const *iter;
+	void *ret;
 
 	if (!begin)
-		return;
-	for (iter = begin; iter < end; iter++)
-		fct(*iter, priv);
+		return NULL;
+	for (iter = begin; iter < end; iter++) {
+		ret = fct(*iter, priv);
+		if (ret)
+			return ret;
+	}
+	return NULL;
 }
 
 /**
@@ -520,11 +525,11 @@ static void for_each_tracepoint_range(struct tracepoint * const *begin,
  * @fct: callback
  * @priv: private data
  */
-void for_each_kernel_tracepoint(void (*fct)(struct tracepoint *tp, void *priv),
-		void *priv)
+void *for_each_kernel_tracepoint(void *(*fct)(struct tracepoint *tp, void *priv),
+				 void *priv)
 {
-	for_each_tracepoint_range(__start___tracepoints_ptrs,
-		__stop___tracepoints_ptrs, fct, priv);
+	return for_each_tracepoint_range(__start___tracepoints_ptrs,
+					 __stop___tracepoints_ptrs, fct, priv);
 }
 EXPORT_SYMBOL_GPL(for_each_kernel_tracepoint);
 
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index bcfedd39e7a365..392189bb0a0db3 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3114,7 +3114,7 @@ TRACE_EVENT(rdev_start_radar_detection,
 
 TRACE_EVENT(rdev_set_mcast_rate,
 	TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
-		 int mcast_rate[NUM_NL80211_BANDS]),
+		 int *mcast_rate),
 	TP_ARGS(wiphy, netdev, mcast_rate),
 	TP_STRUCT__entry(
 		WIPHY_ENTRY
diff --git a/sound/firewire/amdtp-stream-trace.h b/sound/firewire/amdtp-stream-trace.h
index ea0d486652c838..54cdd4ffa9ceb1 100644
--- a/sound/firewire/amdtp-stream-trace.h
+++ b/sound/firewire/amdtp-stream-trace.h
@@ -14,7 +14,7 @@
 #include <linux/tracepoint.h>
 
 TRACE_EVENT(in_packet,
-	TP_PROTO(const struct amdtp_stream *s, u32 cycles, u32 cip_header[2], unsigned int payload_length, unsigned int index),
+	TP_PROTO(const struct amdtp_stream *s, u32 cycles, u32 *cip_header, unsigned int payload_length, unsigned int index),
 	TP_ARGS(s, cycles, cip_header, payload_length, index),
 	TP_STRUCT__entry(
 		__field(unsigned int, second)