diff options
Diffstat (limited to 'fix-timers-for-4.15-kernel.patch')
| -rw-r--r-- | fix-timers-for-4.15-kernel.patch | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/fix-timers-for-4.15-kernel.patch b/fix-timers-for-4.15-kernel.patch deleted file mode 100644 index 3ca7c401e4ca..000000000000 --- a/fix-timers-for-4.15-kernel.patch +++ /dev/null @@ -1,243 +0,0 @@ -diff --git a/runtime/linux/runtime.h b/runtime/linux/runtime.h -index 9c585a20d..df9b74c5c 100644 ---- a/runtime/linux/runtime.h -+++ b/runtime/linux/runtime.h -@@ -34,7 +34,7 @@ - #include <linux/compat.h> - #include <linux/sched.h> - #include <linux/mm.h> --#include <linux/timer.h> -+#include "timer_compatibility.h" - #include <linux/delay.h> - #include <linux/profile.h> - #include <linux/rcupdate.h> -diff --git a/runtime/linux/timer_compatibility.h b/runtime/linux/timer_compatibility.h -new file mode 100644 -index 000000000..ac03de998 ---- /dev/null -+++ b/runtime/linux/timer_compatibility.h -@@ -0,0 +1,76 @@ -+/* -+ * linux/timer.h compatibility defines and inlines -+ * Copyright (C) 2017 Red Hat Inc. -+ * -+ * This file is part of systemtap, and is free software. You can -+ * redistribute it and/or modify it under the terms of the GNU General -+ * Public License (GPL); either version 2, or (at your option) any -+ * later version. -+ */ -+ -+#ifndef _TIMER_COMPATIBILITY_H_ -+#define _TIMER_COMPATIBILITY_H_ -+ -+#include <linux/timer.h> -+ -+/* -+ * Starting with the 4.15 kernel, the timer interface -+ * changed. Originally, you'd do something like: -+ * -+ * static void timer_func(unsigned long val); -+ * -+ * init_timer(&timer); -+ * timer.expires = jiffies + STP_RELAY_TIMER_INTERVAL; -+ * timer.function = timer_func; -+ * timer.data = 0; -+ * add_timer(&timer); -+ * -+ * The 'data' parameter would get passed to the callback -+ * function. Starting with 4.15, you'd do something like this: -+ * -+ * static void timer_func(struct timer_list *val); -+ * -+ * timer_setup(&timer, timer_func, 0); -+ * timer.expires = jiffies + STP_RELAY_TIMER_INTERVAL; -+ * add_timer(&timer); -+ * -+ * With the new code, the timer that caused the callback gets passed -+ * to the timer callback function. The 'data' field has been removed. -+ * -+ * So, we're going to use the new interface. To hide the differences -+ * between the callback function parameter type, we'll define a new -+ * type, 'stp_timer_callback_parameter_t'. -+ * -+ * If code needs to figure out the difference between the old and new -+ * interface, it should test the TIMER_TRACE_FLAGMASK define (which -+ * only exists in the new interface). -+ */ -+ -+#if defined(TIMER_TRACE_FLAGMASK) -+/* This is the >= 4.15 kernel interface. */ -+ -+typedef struct timer_list * stp_timer_callback_parameter_t; -+ -+#else -+/* This is the < 4.15 kernel interface. */ -+ -+typedef unsigned long stp_timer_callback_parameter_t; -+ -+/** -+ * timer_setup - prepare a timer for first use -+ * @timer: the timer in question -+ * @callback: the function to call when timer expires -+ * @flags: any TIMER_* flags (note that anything other than 0 is an -+ * error, since this compatibility function can't support any -+ * of the TIMER_* flags) -+ */ -+#define timer_setup(timer, callback, flags) \ -+ { \ -+ init_timer((timer)); \ -+ (timer)->function = callback; \ -+ (timer)->data = 0; \ -+ BUILD_BUG_ON_ZERO((flags) != 0); \ -+ } -+#endif -+ -+#endif /* _TIMER_COMPATIBILITY_H_ */ -diff --git a/runtime/time.c b/runtime/time.c -index 2e666d54c..91ceafa6a 100644 ---- a/runtime/time.c -+++ b/runtime/time.c -@@ -168,10 +168,10 @@ __stp_time_smp_callback(void *val) - - /* The timer callback is in a softIRQ -- interrupts enabled. */ - static void --__stp_time_timer_callback(unsigned long val) -+__stp_time_timer_callback(stp_timer_callback_parameter_t unused) - { - stp_time_t *time =__stp_time_local_update(); -- (void) val; -+ (void) unused; - - /* PR6481: make sure IRQs are enabled before resetting the timer - (IRQs are disabled and then reenabled in -@@ -200,9 +200,8 @@ __stp_init_time(void *info) - time->freq = __stp_get_freq(); - __stp_time_local_update(); - -- init_timer(&time->timer); -+ timer_setup(&time->timer, __stp_time_timer_callback, 0); - time->timer.expires = jiffies + STP_TIME_SYNC_INTERVAL; -- time->timer.function = __stp_time_timer_callback; - - #ifndef STAPCONF_ADD_TIMER_ON - add_timer(&time->timer); -diff --git a/runtime/transport/relay_v2.c b/runtime/transport/relay_v2.c -index f81d75dfa..135951a8e 100644 ---- a/runtime/transport/relay_v2.c -+++ b/runtime/transport/relay_v2.c -@@ -30,7 +30,7 @@ - #include <linux/debugfs.h> - #include <linux/mm.h> - #include <linux/relay.h> --#include <linux/timer.h> -+#include "../linux/timer_compatibility.h" - #include "../uidgid_compatibility.h" - #include "relay_compat.h" - -@@ -120,7 +120,7 @@ static void __stp_relay_wakeup_readers(struct rchan_buf *buf) - wake_up_interruptible(&buf->read_wait); - } - --static void __stp_relay_wakeup_timer(unsigned long val) -+static void __stp_relay_wakeup_timer(stp_timer_callback_parameter_t unused) - { - #ifdef STP_BULKMODE - int i; -@@ -151,10 +151,8 @@ static void __stp_relay_wakeup_timer(unsigned long val) - static void __stp_relay_timer_init(void) - { - atomic_set(&_stp_relay_data.wakeup, 0); -- init_timer(&_stp_relay_data.timer); -+ timer_setup(&_stp_relay_data.timer, __stp_relay_wakeup_timer, 0); - _stp_relay_data.timer.expires = jiffies + STP_RELAY_TIMER_INTERVAL; -- _stp_relay_data.timer.function = __stp_relay_wakeup_timer; -- _stp_relay_data.timer.data = 0; - add_timer(&_stp_relay_data.timer); - smp_mb(); - } -diff --git a/runtime/transport/transport.c b/runtime/transport/transport.c -index 3400f220a..320fd187e 100644 ---- a/runtime/transport/transport.c -+++ b/runtime/transport/transport.c -@@ -311,7 +311,7 @@ static void _stp_detach(void) - } - - --static void _stp_ctl_work_callback(unsigned long val); -+static void _stp_ctl_work_callback(stp_timer_callback_parameter_t unused); - - /* - * Called when stapio opens the control channel. -@@ -320,13 +320,12 @@ static void _stp_attach(void) - { - dbug_trans(1, "attach\n"); - _stp_pid = current->pid; -- if (_stp_namespaces_pid < 1) -- _stp_namespaces_pid = _stp_pid; -+ if (_stp_namespaces_pid < 1) -+ _stp_namespaces_pid = _stp_pid; - _stp_transport_data_fs_overwrite(0); -- init_timer(&_stp_ctl_work_timer); -+ -+ timer_setup(&_stp_ctl_work_timer, _stp_ctl_work_callback, 0); - _stp_ctl_work_timer.expires = jiffies + STP_CTL_TIMER_INTERVAL; -- _stp_ctl_work_timer.function = _stp_ctl_work_callback; -- _stp_ctl_work_timer.data= 0; - add_timer(&_stp_ctl_work_timer); - } - -@@ -341,7 +340,7 @@ static void _stp_attach(void) - * notified. Reschedules itself if someone is still attached - * to the cmd channel. - */ --static void _stp_ctl_work_callback(unsigned long val) -+static void _stp_ctl_work_callback(stp_timer_callback_parameter_t unused) - { - int do_io = 0; - unsigned long flags; -diff --git a/tapset-timers.cxx b/tapset-timers.cxx -index 1a40bcda0..0ab4d69cd 100644 ---- a/tapset-timers.cxx -+++ b/tapset-timers.cxx -@@ -122,9 +122,13 @@ timer_derived_probe_group::emit_module_decls (systemtap_session& s) - s.op->newline(-1) << "};"; - s.op->newline(); - -- s.op->newline() << "static void enter_timer_probe (unsigned long val) {"; -+ s.op->newline() << "static void enter_timer_probe (stp_timer_callback_parameter_t val) {"; -+ s.op->newline() << "#if defined(TIMER_TRACE_FLAGMASK)"; -+ s.op->newline(1) << "struct stap_timer_probe* stp = container_of(val, struct stap_timer_probe, timer_list);"; -+ s.op->newline(-1) << "#else"; - s.op->newline(1) << "struct stap_timer_probe* stp = & stap_timer_probes [val];"; -- s.op->newline() << "if ((atomic_read (session_state()) == STAP_SESSION_STARTING) ||"; -+ s.op->newline(-1) << "#endif"; -+ s.op->newline(1) << "if ((atomic_read (session_state()) == STAP_SESSION_STARTING) ||"; - s.op->newline() << " (atomic_read (session_state()) == STAP_SESSION_RUNNING))"; - s.op->newline(1) << "mod_timer (& stp->timer_list, jiffies + "; - emit_interval (s.op); -@@ -148,9 +152,11 @@ timer_derived_probe_group::emit_module_init (systemtap_session& s) - s.op->newline() << "for (i=0; i<" << probes.size() << "; i++) {"; - s.op->newline(1) << "struct stap_timer_probe* stp = & stap_timer_probes [i];"; - s.op->newline() << "probe_point = stp->probe->pp;"; -- s.op->newline() << "init_timer (& stp->timer_list);"; -- s.op->newline() << "stp->timer_list.function = & enter_timer_probe;"; -+ -+ s.op->newline() << "timer_setup (& stp->timer_list, enter_timer_probe, 0);"; -+ s.op->newline() << "#if !defined(TIMER_TRACE_FLAGMASK)"; - s.op->newline() << "stp->timer_list.data = i;"; // NB: important! -+ s.op->newline() << "#endif"; - // copy timer renew calculations from above :-( - s.op->newline() << "stp->timer_list.expires = jiffies + "; - emit_interval (s.op); -diff --git a/tapset/linux/scsi.stp b/tapset/linux/scsi.stp -index 44f686c2a..35779421b 100644 ---- a/tapset/linux/scsi.stp -+++ b/tapset/linux/scsi.stp -@@ -14,7 +14,7 @@ - #include <scsi/scsi_cmnd.h> - #include <scsi/scsi_device.h> - #include <scsi/scsi_host.h> --#include <linux/timer.h> -+#include "linux/timer_compatibility.h" - #include <linux/blkdev.h> - %} |