lttng-modules: fix build against v5.10+

lttng-modules doesn't currently build against the lastest 5.10-rc
versions.

Upstream lttng does have fixes for the issues, but hasn't done a
release that contains them yet. There are other patches on the
2.12.x branch, but I've skipped them for now as they aren't
necessary for 5.10 builds, and can be picked up with the next
full update.

We also bump the dev-upstream hash to make them easier to pickup
for those building from git.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/meta/recipes-kernel/lttng/lttng-modules/0014-fix-tracepoint-Optimize-using-static_call-v5.10.patch b/meta/recipes-kernel/lttng/lttng-modules/0014-fix-tracepoint-Optimize-using-static_call-v5.10.patch
new file mode 100644
index 0000000000..5892a408b3
--- /dev/null
+++ b/meta/recipes-kernel/lttng/lttng-modules/0014-fix-tracepoint-Optimize-using-static_call-v5.10.patch
@@ -0,0 +1,196 @@
+From bb346792c2cb6995ffc08d2084121935c6384865 Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Mon, 26 Oct 2020 17:09:05 -0400
+Subject: [PATCH 14/19] fix: tracepoint: Optimize using static_call() (v5.10)
+
+See upstream commit :
+
+  commit d25e37d89dd2f41d7acae0429039d2f0ae8b4a07
+  Author: Steven Rostedt (VMware) <rostedt@goodmis.org>
+  Date:   Tue Aug 18 15:57:52 2020 +0200
+
+    tracepoint: Optimize using static_call()
+
+    Currently the tracepoint site will iterate a vector and issue indirect
+    calls to however many handlers are registered (ie. the vector is
+    long).
+
+    Using static_call() it is possible to optimize this for the common
+    case of only having a single handler registered. In this case the
+    static_call() can directly call this handler. Otherwise, if the vector
+    is longer than 1, call a function that iterates the whole vector like
+    the current code.
+
+Upstream-Status: Backport
+
+Change-Id: I739dd84d62cc1a821b8bd8acff74fa29aa25d22f
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ lttng-statedump-impl.c    | 80 +++++++++++++++++++++++++++++++--------
+ probes/lttng.c            |  7 +++-
+ tests/probes/lttng-test.c |  7 +++-
+ wrapper/tracepoint.h      |  8 ++++
+ 4 files changed, 84 insertions(+), 18 deletions(-)
+
+diff --git a/lttng-statedump-impl.c b/lttng-statedump-impl.c
+index a6fa71a5..67ecd33c 100644
+--- a/lttng-statedump-impl.c
++++ b/lttng-statedump-impl.c
+@@ -55,26 +55,76 @@
+ #define LTTNG_INSTRUMENTATION
+ #include <instrumentation/events/lttng-module/lttng-statedump.h>
+ 
+-DEFINE_TRACE(lttng_statedump_block_device);
+-DEFINE_TRACE(lttng_statedump_end);
+-DEFINE_TRACE(lttng_statedump_interrupt);
+-DEFINE_TRACE(lttng_statedump_file_descriptor);
+-DEFINE_TRACE(lttng_statedump_start);
+-DEFINE_TRACE(lttng_statedump_process_state);
+-DEFINE_TRACE(lttng_statedump_process_pid_ns);
++LTTNG_DEFINE_TRACE(lttng_statedump_block_device,
++	TP_PROTO(struct lttng_session *session,
++		dev_t dev, const char *diskname),
++	TP_ARGS(session, dev, diskname));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_end,
++	TP_PROTO(struct lttng_session *session),
++	TP_ARGS(session));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_interrupt,
++	TP_PROTO(struct lttng_session *session,
++		unsigned int irq, const char *chip_name,
++		struct irqaction *action),
++	TP_ARGS(session, irq, chip_name, action));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_file_descriptor,
++	TP_PROTO(struct lttng_session *session,
++		struct files_struct *files,
++		int fd, const char *filename,
++		unsigned int flags, fmode_t fmode),
++	TP_ARGS(session, files, fd, filename, flags, fmode));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_start,
++	TP_PROTO(struct lttng_session *session),
++	TP_ARGS(session));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_process_state,
++	TP_PROTO(struct lttng_session *session,
++		struct task_struct *p,
++		int type, int mode, int submode, int status,
++		struct files_struct *files),
++	TP_ARGS(session, p, type, mode, submode, status, files));
++
++LTTNG_DEFINE_TRACE(lttng_statedump_process_pid_ns,
++	TP_PROTO(struct lttng_session *session,
++		struct task_struct *p,
++		struct pid_namespace *pid_ns),
++	TP_ARGS(session, p, pid_ns));
++
+ #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0))
+-DEFINE_TRACE(lttng_statedump_process_cgroup_ns);
++LTTNG_DEFINE_TRACE(lttng_statedump_process_cgroup_ns,
++	TP_PROTO(struct lttng_session *session,
++		struct task_struct *p,
++		struct cgroup_namespace *cgroup_ns),
++	TP_ARGS(session, p, cgroup_ns));
+ #endif
+-DEFINE_TRACE(lttng_statedump_process_ipc_ns);
++
++LTTNG_DEFINE_TRACE(lttng_statedump_process_ipc_ns,
++	TP_PROTO(struct lttng_session *session,
++		struct task_struct *p,
++		struct ipc_namespace *ipc_ns),
++	TP_ARGS(session, p, ipc_ns));
++
+ #ifndef LTTNG_MNT_NS_MISSING_HEADER
+-DEFINE_TRACE(lttng_statedump_process_mnt_ns);
++LTTNG_DEFINE_TRACE(lttng_statedump_process_mnt_ns,
++	TP_PROTO(struct lttng_session *session,
++		struct task_struct *p,
++		struct mnt_namespace *mnt_ns),
++	TP_ARGS(session, p, mnt_ns));
+ #endif
+-DEFINE_TRACE(lttng_statedump_process_net_ns);
+-DEFINE_TRACE(lttng_statedump_process_user_ns);
+-DEFINE_TRACE(lttng_statedump_process_uts_ns);
+-DEFINE_TRACE(lttng_statedump_network_interface);
++
++LTTNG_DEFINE_TRACE(lttng_statedump_network_interface,
++	TP_PROTO(struct lttng_session *session,
++		struct net_device *dev, struct in_ifaddr *ifa),
++	TP_ARGS(session, dev, ifa));
++
+ #ifdef LTTNG_HAVE_STATEDUMP_CPU_TOPOLOGY
+-DEFINE_TRACE(lttng_statedump_cpu_topology);
++LTTNG_DEFINE_TRACE(lttng_statedump_cpu_topology,
++	TP_PROTO(struct lttng_session *session, struct cpuinfo_x86 *c),
++	TP_ARGS(session, c));
+ #endif
+ 
+ struct lttng_fd_ctx {
+diff --git a/probes/lttng.c b/probes/lttng.c
+index 05bc1388..7ddaa69f 100644
+--- a/probes/lttng.c
++++ b/probes/lttng.c
+@@ -8,7 +8,7 @@
+  */
+ 
+ #include <linux/module.h>
+-#include <linux/tracepoint.h>
++#include <wrapper/tracepoint.h>
+ #include <linux/uaccess.h>
+ #include <linux/gfp.h>
+ #include <linux/fs.h>
+@@ -32,7 +32,10 @@
+ #define LTTNG_LOGGER_COUNT_MAX	1024
+ #define LTTNG_LOGGER_FILE	"lttng-logger"
+ 
+-DEFINE_TRACE(lttng_logger);
++LTTNG_DEFINE_TRACE(lttng_logger,
++	PARAMS(const char __user *text, size_t len),
++	PARAMS(text, len)
++);
+ 
+ static struct proc_dir_entry *lttng_logger_dentry;
+ 
+diff --git a/tests/probes/lttng-test.c b/tests/probes/lttng-test.c
+index b450e7d7..a4fa0645 100644
+--- a/tests/probes/lttng-test.c
++++ b/tests/probes/lttng-test.c
+@@ -25,7 +25,12 @@
+ #define LTTNG_INSTRUMENTATION
+ #include <instrumentation/events/lttng-module/lttng-test.h>
+ 
+-DEFINE_TRACE(lttng_test_filter_event);
++LTTNG_DEFINE_TRACE(lttng_test_filter_event,
++	PARAMS(int anint, int netint, long *values,
++		char *text, size_t textlen,
++		char *etext, uint32_t * net_values),
++	PARAMS(anint, netint, values, text, textlen, etext, net_values)
++);
+ 
+ #define LTTNG_TEST_FILTER_EVENT_FILE	"lttng-test-filter-event"
+ 
+diff --git a/wrapper/tracepoint.h b/wrapper/tracepoint.h
+index c4ba0123..bc19d8c1 100644
+--- a/wrapper/tracepoint.h
++++ b/wrapper/tracepoint.h
+@@ -14,6 +14,14 @@
+ #include <linux/tracepoint.h>
+ #include <linux/module.h>
+ 
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,10,0))
++#define LTTNG_DEFINE_TRACE(name, proto, args)		\
++	DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
++#else
++#define LTTNG_DEFINE_TRACE(name, proto, args)		\
++	DEFINE_TRACE(name)
++#endif
++
+ #ifndef HAVE_KABI_2635_TRACEPOINT
+ 
+ #define kabi_2635_tracepoint_probe_register tracepoint_probe_register
+-- 
+2.19.1
+