+++ /dev/null
-blktrace_start: blktrace_start.c
- gcc -I/usr/include -o blktrace_start blktrace_start.c
+++ /dev/null
-#ifndef BLKTRACEAPI_H
-#define BLKTRACEAPI_H
-
-#include <asm/types.h>
-
-/*
- * Trace categories
- */
-enum {
- BLK_TC_READ = 1 << 0, /* reads */
- BLK_TC_WRITE = 1 << 1, /* writes */
- BLK_TC_BARRIER = 1 << 2, /* barrier */
- BLK_TC_SYNC = 1 << 3, /* sync */
- BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
- BLK_TC_REQUEUE = 1 << 5, /* requeueing */
- BLK_TC_ISSUE = 1 << 6, /* issue */
- BLK_TC_COMPLETE = 1 << 7, /* completions */
- BLK_TC_FS = 1 << 8, /* fs requests */
- BLK_TC_PC = 1 << 9, /* pc requests */
- BLK_TC_NOTIFY = 1 << 10, /* special message */
- BLK_TC_AHEAD = 1 << 11, /* readahead */
- BLK_TC_META = 1 << 12, /* metadata */
-
- BLK_TC_END = 1 << 15, /* only 16-bits, reminder */
-};
-
-#define BLK_TC_SHIFT (16)
-#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
-
-/*
- * Basic trace actions
- */
-//enum blktrace_act {
-// __BLK_TA_QUEUE = 1, /* queued */
-// __BLK_TA_BACKMERGE, /* back merged to existing rq */
-// __BLK_TA_FRONTMERGE, /* front merge to existing rq */
-// __BLK_TA_GETRQ, /* allocated new request */
-// __BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
-// __BLK_TA_REQUEUE, /* request requeued */
-// __BLK_TA_ISSUE, /* sent to driver */
-// __BLK_TA_COMPLETE, /* completed by driver */
-// __BLK_TA_PLUG, /* queue was plugged */
-// __BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
-// __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
-// __BLK_TA_INSERT, /* insert request */
-// __BLK_TA_SPLIT, /* bio was split */
-// __BLK_TA_BOUNCE, /* bio was bounced */
-// __BLK_TA_REMAP, /* bio was remapped */
-//};
-
-/*
- * Notify events.
- */
-//enum blktrace_notify {
-// __BLK_TN_PROCESS = 0, /* establish pid/name mapping */
-// __BLK_TN_TIMESTAMP, /* include system clock */
-//};
-
-
-/*
- * Trace actions in full. Additionally, read or write is masked
- */
-#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
-#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
-#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
-#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
-#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
-#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
-#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
-
-#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
-#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
-
-#define BLK_IO_TRACE_MAGIC 0x65617400
-#define BLK_IO_TRACE_VERSION 0x07
-
-/*
- * The trace itself
- */
-//struct blk_io_trace {
-// u32 magic; /* MAGIC << 8 | version */
-// u32 sequence; /* event number */
-// u64 time; /* in microseconds */
-// u64 sector; /* disk offset */
-// u32 bytes; /* transfer length */
-// u32 action; /* what happened */
-// u32 pid; /* who did it */
-// u32 device; /* device number */
-// u32 cpu; /* on what cpu did it happen */
-// u16 error; /* completion error */
-// u16 pdu_len; /* length of data after this trace */
-//};
-
-/*
- * The remap event
- */
-//struct blk_io_trace_remap {
-// __be32 device;
-// __be32 device_from;
-// __be64 sector;
-//};
-
-enum {
- Blktrace_setup = 1,
- Blktrace_running,
- Blktrace_stopped,
-};
-
-struct blk_trace {
- int trace_state;
-// struct rchan *rchan;
-// unsigned long *sequence;
-// u16 act_mask;
-// u64 start_lba;
-// u64 end_lba;
-// u32 pid;
- __u32 dev;
-// struct dentry *dir;
-// struct dentry *dropped_file;
-// atomic_t dropped;
-};
-
-/*
- * User setup structure passed with BLKSTARTTRACE
- */
-struct blk_user_trace_setup {
- char name[32]; /* output */
-// __u16 act_mask; /* input */
-// __u32 buf_size; /* input */
-// __u32 buf_nr; /* input */
-// __u64 start_lba;
-// __u64 end_lba;
-// __u32 pid;
-};
-
-#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
-#define BLKTRACESTART _IO(0x12,116)
-#define BLKTRACESTOP _IO(0x12,117)
-#define BLKTRACETEARDOWN _IO(0x12,118)
-
-#endif
+++ /dev/null
-#include <sys/types.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "blktrace_api.h"
-
-int start(int fd)
-{
- struct blk_user_trace_setup buts;
-
- memset(&buts, 0, sizeof(buts));
-// buts.buf_size = 512*1024;
-// buts.buf_nr = 4;
-// buts.act_mask = ~0;
-
- if (ioctl(fd, BLKTRACESETUP, &buts) < 0) {
- perror("BLKTRACESETUP");
- return 1;
- }
-
- return 0;
-}
-
-int stop(int fd)
-{
- ioctl(fd, BLKTRACESTOP);
- if(ioctl(fd, BLKTRACETEARDOWN) < 0)
- perror("BLKTRACETEARDOWN");
-
- return 0;
-}
-
-int main(int argc, char **argv)
-{
- int fd;
-
- if(argc < 3) {
- fprintf(stderr, "usage: --start|--stop %s BLKDEV\n", argv[0]);
- return 1;
- }
-
- fd = open(argv[2], O_RDONLY | O_NONBLOCK);
- if (fd < 0) {
- perror(argv[0]);
- return 1;
- }
-
- if(!strcmp("--start", argv[1]))
- start(fd);
- else if(!strcmp("--stop", argv[1]))
- stop(fd);
-
- close(fd);
-
- return 0;
-}
--- /dev/null
+blktrace_start: blktrace_start.c
+ gcc -I/usr/include -o blktrace_start blktrace_start.c
--- /dev/null
+#ifndef BLKTRACEAPI_H
+#define BLKTRACEAPI_H
+
+#include <asm/types.h>
+
+/*
+ * Trace categories
+ */
+enum {
+ BLK_TC_READ = 1 << 0, /* reads */
+ BLK_TC_WRITE = 1 << 1, /* writes */
+ BLK_TC_BARRIER = 1 << 2, /* barrier */
+ BLK_TC_SYNC = 1 << 3, /* sync */
+ BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
+ BLK_TC_REQUEUE = 1 << 5, /* requeueing */
+ BLK_TC_ISSUE = 1 << 6, /* issue */
+ BLK_TC_COMPLETE = 1 << 7, /* completions */
+ BLK_TC_FS = 1 << 8, /* fs requests */
+ BLK_TC_PC = 1 << 9, /* pc requests */
+ BLK_TC_NOTIFY = 1 << 10, /* special message */
+ BLK_TC_AHEAD = 1 << 11, /* readahead */
+ BLK_TC_META = 1 << 12, /* metadata */
+
+ BLK_TC_END = 1 << 15, /* only 16-bits, reminder */
+};
+
+#define BLK_TC_SHIFT (16)
+#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
+
+/*
+ * Basic trace actions
+ */
+//enum blktrace_act {
+// __BLK_TA_QUEUE = 1, /* queued */
+// __BLK_TA_BACKMERGE, /* back merged to existing rq */
+// __BLK_TA_FRONTMERGE, /* front merge to existing rq */
+// __BLK_TA_GETRQ, /* allocated new request */
+// __BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
+// __BLK_TA_REQUEUE, /* request requeued */
+// __BLK_TA_ISSUE, /* sent to driver */
+// __BLK_TA_COMPLETE, /* completed by driver */
+// __BLK_TA_PLUG, /* queue was plugged */
+// __BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
+// __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
+// __BLK_TA_INSERT, /* insert request */
+// __BLK_TA_SPLIT, /* bio was split */
+// __BLK_TA_BOUNCE, /* bio was bounced */
+// __BLK_TA_REMAP, /* bio was remapped */
+//};
+
+/*
+ * Notify events.
+ */
+//enum blktrace_notify {
+// __BLK_TN_PROCESS = 0, /* establish pid/name mapping */
+// __BLK_TN_TIMESTAMP, /* include system clock */
+//};
+
+
+/*
+ * Trace actions in full. Additionally, read or write is masked
+ */
+#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
+#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
+#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
+#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
+#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
+#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
+
+#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
+#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
+
+#define BLK_IO_TRACE_MAGIC 0x65617400
+#define BLK_IO_TRACE_VERSION 0x07
+
+/*
+ * The trace itself
+ */
+//struct blk_io_trace {
+// u32 magic; /* MAGIC << 8 | version */
+// u32 sequence; /* event number */
+// u64 time; /* in microseconds */
+// u64 sector; /* disk offset */
+// u32 bytes; /* transfer length */
+// u32 action; /* what happened */
+// u32 pid; /* who did it */
+// u32 device; /* device number */
+// u32 cpu; /* on what cpu did it happen */
+// u16 error; /* completion error */
+// u16 pdu_len; /* length of data after this trace */
+//};
+
+/*
+ * The remap event
+ */
+//struct blk_io_trace_remap {
+// __be32 device;
+// __be32 device_from;
+// __be64 sector;
+//};
+
+enum {
+ Blktrace_setup = 1,
+ Blktrace_running,
+ Blktrace_stopped,
+};
+
+struct blk_trace {
+ int trace_state;
+// struct rchan *rchan;
+// unsigned long *sequence;
+// u16 act_mask;
+// u64 start_lba;
+// u64 end_lba;
+// u32 pid;
+ __u32 dev;
+// struct dentry *dir;
+// struct dentry *dropped_file;
+// atomic_t dropped;
+};
+
+/*
+ * User setup structure passed with BLKSTARTTRACE
+ */
+struct blk_user_trace_setup {
+ char name[32]; /* output */
+// __u16 act_mask; /* input */
+// __u32 buf_size; /* input */
+// __u32 buf_nr; /* input */
+// __u64 start_lba;
+// __u64 end_lba;
+// __u32 pid;
+};
+
+#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
+#define BLKTRACESTART _IO(0x12,116)
+#define BLKTRACESTOP _IO(0x12,117)
+#define BLKTRACETEARDOWN _IO(0x12,118)
+
+#endif
--- /dev/null
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "blktrace_api.h"
+
+int start(int fd)
+{
+ struct blk_user_trace_setup buts;
+
+ memset(&buts, 0, sizeof(buts));
+// buts.buf_size = 512*1024;
+// buts.buf_nr = 4;
+// buts.act_mask = ~0;
+
+ if (ioctl(fd, BLKTRACESETUP, &buts) < 0) {
+ perror("BLKTRACESETUP");
+ return 1;
+ }
+
+ return 0;
+}
+
+int stop(int fd)
+{
+ ioctl(fd, BLKTRACESTOP);
+ if(ioctl(fd, BLKTRACETEARDOWN) < 0)
+ perror("BLKTRACETEARDOWN");
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ int fd;
+
+ if(argc < 3) {
+ fprintf(stderr, "usage: --start|--stop %s BLKDEV\n", argv[0]);
+ return 1;
+ }
+
+ fd = open(argv[2], O_RDONLY | O_NONBLOCK);
+ if (fd < 0) {
+ perror(argv[0]);
+ return 1;
+ }
+
+ if(!strcmp("--start", argv[1]))
+ start(fd);
+ else if(!strcmp("--stop", argv[1]))
+ stop(fd);
+
+ close(fd);
+
+ return 0;
+}
projects / lttv.git / commitdiff
