--- /dev/null
+From 2ca0c84f0b4a915c555a0b83102d94ac941619ca Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 18 Mar 2019 16:20:32 -0400
+Subject: [PATCH] Fix: mm: create the new vm_fault_t type (v5.1)
+
+See upstream commit:
+
+ commit 3d3539018d2cbd12e5af4a132636ee7fd8d43ef0
+ Author: Souptick Joarder <jrdr.linux@gmail.com>
+ Date: Thu Mar 7 16:31:14 2019 -0800
+
+ mm: create the new vm_fault_t type
+
+ Page fault handlers are supposed to return VM_FAULT codes, but some
+ drivers/file systems mistakenly return error numbers. Now that all
+ drivers/file systems have been converted to use the vm_fault_t return
+ type, change the type definition to no longer be compatible with 'int'.
+ By making it an unsigned int, the function prototype becomes
+ incompatible with a function which returns int. Sparse will detect any
+ attempts to return a value which is not a VM_FAULT code.
+
+ VM_FAULT_SET_HINDEX and VM_FAULT_GET_HINDEX values are changed to avoid
+ conflict with other VM_FAULT codes.
+
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lib/ringbuffer/ring_buffer_mmap.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+diff --git a/lib/ringbuffer/ring_buffer_mmap.c b/lib/ringbuffer/ring_buffer_mmap.c
+index 30dd93ef..fab94588 100644
+--- a/lib/ringbuffer/ring_buffer_mmap.c
++++ b/lib/ringbuffer/ring_buffer_mmap.c
+@@ -20,7 +20,11 @@
+ /*
+ * fault() vm_op implementation for ring buffer file mapping.
+ */
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
++static vm_fault_t lib_ring_buffer_fault_compat(struct vm_area_struct *vma, struct vm_fault *vmf)
++#else
+ static int lib_ring_buffer_fault_compat(struct vm_area_struct *vma, struct vm_fault *vmf)
++#endif
+ {
+ struct lib_ring_buffer *buf = vma->vm_private_data;
+ struct channel *chan = buf->backend.chan;
+@@ -53,7 +57,13 @@ static int lib_ring_buffer_fault_compat(struct vm_area_struct *vma, struct vm_fa
+ return 0;
+ }
+
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
++static vm_fault_t lib_ring_buffer_fault(struct vm_fault *vmf)
++{
++ struct vm_area_struct *vma = vmf->vma;
++ return lib_ring_buffer_fault_compat(vma, vmf);
++}
++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
+ static int lib_ring_buffer_fault(struct vm_fault *vmf)
+ {
+ struct vm_area_struct *vma = vmf->vma;
+From 92da05ce1f73488a57e7fd79e9c03113cefdb76f Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 18 Mar 2019 16:20:33 -0400
+Subject: [PATCH] Fix: rcu: Remove wrapper definitions for obsolete RCU...
+ (v5.1)
+
+See upstream commit :
+
+commit 6ba7d681aca22e53385bdb35b1d7662e61905760
+Author: Paul E. McKenney <paulmck@linux.ibm.com>
+Date: Wed Jan 9 15:22:03 2019 -0800
+
+ rcu: Remove wrapper definitions for obsolete RCU update functions
+
+ None of synchronize_rcu_bh, synchronize_rcu_bh_expedited, call_rcu_bh,
+ rcu_barrier_bh, synchronize_sched, synchronize_sched_expedited,
+ call_rcu_sched, rcu_barrier_sched, get_state_synchronize_sched, and
+ cond_synchronize_sched are actually used. This commit therefore removes
+ their trivial wrapper-function definitions.
+
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lttng-events.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/lttng-events.c b/lttng-events.c
+index 566080a3..f4206c54 100644
+--- a/lttng-events.c
++++ b/lttng-events.c
+@@ -75,7 +75,12 @@ int _lttng_field_statedump(struct lttng_session *session,
+
+ void synchronize_trace(void)
+ {
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
++ synchronize_rcu();
++#else
+ synchronize_sched();
++#endif
++
+ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+ #ifdef CONFIG_PREEMPT_RT_FULL
+ synchronize_rcu();
+From d6cd2c9598a06f0ba1ba885bbe754e8836528310 Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 18 Mar 2019 16:20:34 -0400
+Subject: [PATCH] Fix: pipe: stop using ->can_merge (v5.1)
+
+See upstream commit:
+
+ commit 01e7187b41191376cee8bea8de9f907b001e87b4
+ Author: Jann Horn <jannh@google.com>
+ Date: Wed Jan 23 15:19:18 2019 +0100
+
+ pipe: stop using ->can_merge
+
+ Al Viro pointed out that since there is only one pipe buffer type to which
+ new data can be appended, it isn't necessary to have a ->can_merge field in
+ struct pipe_buf_operations, we can just check for a magic type.
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lib/ringbuffer/ring_buffer_splice.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/ringbuffer/ring_buffer_splice.c b/lib/ringbuffer/ring_buffer_splice.c
+index 468641bc..52179a79 100644
+--- a/lib/ringbuffer/ring_buffer_splice.c
++++ b/lib/ringbuffer/ring_buffer_splice.c
+@@ -43,7 +43,9 @@ static void lib_ring_buffer_pipe_buf_release(struct pipe_inode_info *pipe,
+ }
+
+ static const struct pipe_buf_operations ring_buffer_pipe_buf_ops = {
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5,1,0))
+ .can_merge = 0,
++#endif
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0))
+ .map = generic_pipe_buf_map,
+ .unmap = generic_pipe_buf_unmap,
+From 8a88382fb09bbeda443044ee8cdb8f92040636bc Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 18 Mar 2019 16:20:35 -0400
+Subject: [PATCH] Fix: Revert "KVM: MMU: show mmu_valid_gen..." (v5.1)
+
+See upstream commit :
+
+ commit b59c4830ca185ba0e9f9e046fb1cd10a4a92627a
+ Author: Sean Christopherson <sean.j.christopherson@intel.com>
+ Date: Tue Feb 5 13:01:30 2019 -0800
+
+ Revert "KVM: MMU: show mmu_valid_gen in shadow page related tracepoints"
+
+ ...as part of removing x86 KVM's fast invalidate mechanism, i.e. this
+ is one part of a revert all patches from the series that introduced the
+ mechanism[1].
+
+ This reverts commit 2248b023219251908aedda0621251cffc548f258.
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ .../events/lttng-module/arch/x86/kvm/mmutrace.h | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h b/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
+index 39ec6a98..e25a7745 100644
+--- a/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
++++ b/instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h
+@@ -14,7 +14,15 @@
+ #undef TRACE_SYSTEM
+ #define TRACE_SYSTEM kvm_mmu
+
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
++
++#define LTTNG_KVM_MMU_PAGE_FIELDS \
++ ctf_integer(__u64, gfn, (sp)->gfn) \
++ ctf_integer(__u32, role, (sp)->role.word) \
++ ctf_integer(__u32, root_count, (sp)->root_count) \
++ ctf_integer(bool, unsync, (sp)->unsync)
++
++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
+
+ #define LTTNG_KVM_MMU_PAGE_FIELDS \
+ ctf_integer(unsigned long, mmu_valid_gen, (sp)->mmu_valid_gen) \
+From 1b7b9c650ebb94358365512199559b0ece3e657c Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Tue, 9 Apr 2019 14:12:41 -0400
+Subject: [PATCH] Fix: Remove start and number from syscall_get_arguments()
+ args (v5.1)
+
+ commit b35f549df1d7520d37ba1e6d4a8d4df6bd52d136
+ Author: Steven Rostedt (Red Hat) <rostedt@goodmis.org>
+ Date: Mon Nov 7 16:26:37 2016 -0500
+
+ syscalls: Remove start and number from syscall_get_arguments() args
+
+ At Linux Plumbers, Andy Lutomirski approached me and pointed out that the
+ function call syscall_get_arguments() implemented in x86 was horribly
+ written and not optimized for the standard case of passing in 0 and 6 for
+ the starting index and the number of system calls to get. When looking at
+ all the users of this function, I discovered that all instances pass in only
+ 0 and 6 for these arguments. Instead of having this function handle
+ different cases that are never used, simply rewrite it to return the first 6
+ arguments of a system call.
+
+ This should help out the performance of tracing system calls by ptrace,
+ ftrace and perf.
+
+ Link: http://lkml.kernel.org/r/20161107213233.754809394@goodmis.org
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lttng-syscalls.c | 57 ++++++++++++++++++++++++-----------------------
+ wrapper/syscall.h | 34 ++++++++++++++++++++++++++++
+ 2 files changed, 63 insertions(+), 28 deletions(-)
+ create mode 100644 wrapper/syscall.h
+
+diff --git a/lttng-syscalls.c b/lttng-syscalls.c
+index bcc06b5c..ebd9246c 100644
+--- a/lttng-syscalls.c
++++ b/lttng-syscalls.c
+@@ -25,6 +25,7 @@
+ #include <wrapper/tracepoint.h>
+ #include <wrapper/file.h>
+ #include <wrapper/rcu.h>
++#include <wrapper/syscall.h>
+ #include <lttng-events.h>
+
+ #ifndef CONFIG_COMPAT
+@@ -361,9 +362,9 @@ struct lttng_syscall_filter {
+ static void syscall_entry_unknown(struct lttng_event *event,
+ struct pt_regs *regs, unsigned int id)
+ {
+- unsigned long args[UNKNOWN_SYSCALL_NRARGS];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ if (unlikely(in_compat_syscall()))
+ __event_probe__compat_syscall_entry_unknown(event, id, args);
+ else
+@@ -432,9 +433,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ case 1:
+ {
+ void (*fptr)(void *__data, unsigned long arg0) = entry->func;
+- unsigned long args[1];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0]);
+ break;
+ }
+@@ -443,9 +444,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ void (*fptr)(void *__data,
+ unsigned long arg0,
+ unsigned long arg1) = entry->func;
+- unsigned long args[2];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0], args[1]);
+ break;
+ }
+@@ -455,9 +456,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ unsigned long arg0,
+ unsigned long arg1,
+ unsigned long arg2) = entry->func;
+- unsigned long args[3];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0], args[1], args[2]);
+ break;
+ }
+@@ -468,9 +469,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ unsigned long arg1,
+ unsigned long arg2,
+ unsigned long arg3) = entry->func;
+- unsigned long args[4];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0], args[1], args[2], args[3]);
+ break;
+ }
+@@ -482,9 +483,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ unsigned long arg2,
+ unsigned long arg3,
+ unsigned long arg4) = entry->func;
+- unsigned long args[5];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0], args[1], args[2], args[3], args[4]);
+ break;
+ }
+@@ -497,9 +498,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ unsigned long arg3,
+ unsigned long arg4,
+ unsigned long arg5) = entry->func;
+- unsigned long args[6];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, args[0], args[1], args[2],
+ args[3], args[4], args[5]);
+ break;
+@@ -512,9 +513,9 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
+ static void syscall_exit_unknown(struct lttng_event *event,
+ struct pt_regs *regs, int id, long ret)
+ {
+- unsigned long args[UNKNOWN_SYSCALL_NRARGS];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ if (unlikely(in_compat_syscall()))
+ __event_probe__compat_syscall_exit_unknown(event, id, ret,
+ args);
+@@ -588,9 +589,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ void (*fptr)(void *__data,
+ long ret,
+ unsigned long arg0) = entry->func;
+- unsigned long args[1];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0]);
+ break;
+ }
+@@ -600,9 +601,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ long ret,
+ unsigned long arg0,
+ unsigned long arg1) = entry->func;
+- unsigned long args[2];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0], args[1]);
+ break;
+ }
+@@ -613,9 +614,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ unsigned long arg0,
+ unsigned long arg1,
+ unsigned long arg2) = entry->func;
+- unsigned long args[3];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0], args[1], args[2]);
+ break;
+ }
+@@ -627,9 +628,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ unsigned long arg1,
+ unsigned long arg2,
+ unsigned long arg3) = entry->func;
+- unsigned long args[4];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0], args[1], args[2], args[3]);
+ break;
+ }
+@@ -642,9 +643,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ unsigned long arg2,
+ unsigned long arg3,
+ unsigned long arg4) = entry->func;
+- unsigned long args[5];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0], args[1], args[2], args[3], args[4]);
+ break;
+ }
+@@ -658,9 +659,9 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
+ unsigned long arg3,
+ unsigned long arg4,
+ unsigned long arg5) = entry->func;
+- unsigned long args[6];
++ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+
+- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
++ lttng_syscall_get_arguments(current, regs, args);
+ fptr(event, ret, args[0], args[1], args[2],
+ args[3], args[4], args[5]);
+ break;
+diff --git a/wrapper/syscall.h b/wrapper/syscall.h
+new file mode 100644
+index 00000000..8715f0c5
+--- /dev/null
++++ b/wrapper/syscall.h
+@@ -0,0 +1,34 @@
++/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
++ *
++ * wrapper/syscall.h
++ *
++ * wrapper around asm/syscall.h.
++ *
++ * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
++ */
++
++#ifndef _LTTNG_WRAPPER_SYSCALL_H
++#define _LTTNG_WRAPPER_SYSCALL_H
++
++#include <asm/syscall.h>
++#include <lttng-kernel-version.h>
++
++#define LTTNG_SYSCALL_NR_ARGS 6
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
++
++#define lttng_syscall_get_arguments(task, regs, args) \
++ syscall_get_arguments(task, regs, args)
++
++#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0) */
++
++static inline
++void lttng_syscall_get_arguments(struct task_struct *task,
++ struct pt_regs *regs, unsigned long *args)
++{
++ syscall_get_arguments(task, regs, 0, LTTNG_SYSCALL_NR_ARGS, args);
++}
++
++#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0) */
++
++#endif /* _LTTNG_WRAPPER_SYSCALL_H */
projects / packages / lttng-modules.git / commitdiff