diff options
Diffstat (limited to 'drivers/gator/gator_events_threads.c')
-rw-r--r-- | drivers/gator/gator_events_threads.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/drivers/gator/gator_events_threads.c b/drivers/gator/gator_events_threads.c deleted file mode 100644 index 9de85862fe6c..000000000000 --- a/drivers/gator/gator_events_threads.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * Sample activity provider - * - * Copyright (C) ARM Limited 2014. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * See gator_events_mmapped.c for additional directions and - * troubleshooting. - * - * For this sample to work these entries must be present in the - * events.xml file. So create an events-threads.xml in the gator - * daemon source directory with the following contents and rebuild - * gatord: - * - * <category name="threads"> - * <event counter="Linux_threads" title="Linux" name="Threads" class="activity" activity1="odd" activity_color1="0x000000ff" rendering_type="bar" average_selection="yes" average_cores="yes" percentage="yes" description="Linux syscall activity"/> - * </category> - */ - -#include <trace/events/sched.h> - -#include "gator.h" - -static ulong threads_enabled; -static ulong threads_key; -static ulong threads_cores; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35) -GATOR_DEFINE_PROBE(sched_switch, TP_PROTO(struct rq *rq, struct task_struct *prev, struct task_struct *next)) -#else -GATOR_DEFINE_PROBE(sched_switch, TP_PROTO(struct task_struct *prev, struct task_struct *next)) -#endif -{ - int cpu = get_physical_cpu(); - int pid = next->pid; - if (pid == 0) { - // idle - gator_marshal_activity_switch(cpu, threads_key, 0, 0); - } else if (pid & 1) { - // odd - gator_marshal_activity_switch(cpu, threads_key, 1, pid); - } else { - // even - //gator_marshal_activity_switch(cpu, threads_key, 2, current->pid); - // Multiple activities are not yet supported so emit idle - gator_marshal_activity_switch(cpu, threads_key, 0, 0); - } -} - -// Adds Linux_threads directory and enabled, key, and cores files to /dev/gator/events -static int gator_events_threads_create_files(struct super_block *sb, struct dentry *root) -{ - struct dentry *dir; - - dir = gatorfs_mkdir(sb, root, "Linux_threads"); - if (!dir) { - return -1; - } - gatorfs_create_ulong(sb, dir, "enabled", &threads_enabled); - gatorfs_create_ro_ulong(sb, dir, "key", &threads_key); - // Number of cores associated with this activity - gatorfs_create_ro_ulong(sb, dir, "cores", &threads_cores); - - return 0; -} - -static int gator_events_threads_start(void) -{ - int cpu; - - if (threads_enabled) { - preempt_disable(); - for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { - gator_marshal_activity_switch(cpu, threads_key, 0, 0); - } - preempt_enable(); - - if (GATOR_REGISTER_TRACE(sched_switch)) { - goto fail_sched_switch; - } - } - - return 0; - -fail_sched_switch: - return -1; -} - -static void gator_events_threads_stop(void) -{ - if (threads_enabled) { - GATOR_UNREGISTER_TRACE(sched_switch); - } - - threads_enabled = 0; -} - -static struct gator_interface gator_events_threads_interface = { - .create_files = gator_events_threads_create_files, - .start = gator_events_threads_start, - .stop = gator_events_threads_stop, -}; - -// Must not be static. Ensure that this init function is added to GATOR_EVENTS_LIST in gator_main.c -int __init gator_events_threads_init(void) -{ - threads_enabled = 0; - threads_key = gator_events_get_key(); - threads_cores = nr_cpu_ids; - - return gator_events_install(&gator_events_threads_interface); -} |