MFP4:

- Implement sampling modes and logging support in hwpmc(4).

- Separate MI and MD parts of hwpmc(4) and allow sharing of
  PMC implementations across different architectures.
  Add support for P4 (EMT64) style PMCs to the amd64 code.

- New pmcstat(8) options: -E (exit time counts) -W (counts
  every context switch), -R (print log file).

- pmc(3) API changes, improve our ability to keep ABI compatibility
  in the future.  Add more 'alias' names for commonly used events.

- bug fixes & documentation.

1 files changed, 146 insertions, 0 deletions

diff --git a/lib/libpmc/pmclog.h b/lib/libpmc/pmclog.h
new file mode 100644
index 0000000..3e3119e
--- /dev/null
+++ b/lib/libpmc/pmclog.h
@@ -0,0 +1,146 @@
+/*-
+ * Copyright (c) 2005 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_PMCLOG_H_
+#define	_PMCLOG_H_
+
+#include <sys/pmclog.h>
+
+enum pmclog_state {
+	PMCLOG_OK,
+	PMCLOG_EOF,
+	PMCLOG_REQUIRE_DATA,
+	PMCLOG_ERROR
+};
+
+struct pmclog_ev_dropnotify {
+};
+
+struct pmclog_ev_closelog {
+};
+
+struct pmclog_ev_initialize {
+	uint32_t	pl_version;
+	uint32_t	pl_arch;
+};
+
+struct pmclog_ev_mappingchange {
+	uint32_t	pl_type;
+	pid_t		pl_pid;
+	uintfptr_t	pl_start;
+	uintfptr_t	pl_end;
+	char		pl_pathname[PATH_MAX];
+};
+
+struct pmclog_ev_pcsample {
+	uintfptr_t	pl_pc;
+	pid_t		pl_pid;
+	pmc_id_t	pl_pmcid;
+};
+
+struct pmclog_ev_pmcallocate {
+	uint32_t	pl_event;
+	const char *	pl_evname;
+	uint32_t	pl_flags;
+	pmc_id_t	pl_pmcid;
+};
+
+struct pmclog_ev_pmcattach {
+	pmc_id_t	pl_pmcid;
+	pid_t		pl_pid;
+	char		pl_pathname[PATH_MAX];
+};
+
+struct pmclog_ev_pmcdetach {
+	pmc_id_t	pl_pmcid;
+	pid_t		pl_pid;
+};
+
+struct pmclog_ev_proccsw {
+	pid_t		pl_pid;
+	pmc_id_t	pl_pmcid;
+	pmc_value_t	pl_value;
+};
+
+struct pmclog_ev_procexec {
+	pid_t		pl_pid;
+	char		pl_pathname[PATH_MAX];
+};
+
+struct pmclog_ev_procexit {
+	uint32_t	pl_pid;
+	pmc_id_t	pl_pmcid;
+	pmc_value_t	pl_value;
+};
+
+struct pmclog_ev_procfork {
+	pid_t		pl_oldpid;
+	pid_t		pl_newpid;
+};
+
+struct pmclog_ev_sysexit {
+	pid_t		pl_pid;
+};
+
+struct pmclog_ev_userdata {
+	uint32_t	pl_userdata;
+};
+
+struct pmclog_ev {
+	enum pmclog_state pl_state;	/* state after 'get_event()' */
+	off_t		  pl_offset;	/* byte offset in stream */
+	size_t		  pl_count;	/* count of records so far */
+	struct timespec   pl_ts;	/* log entry timestamp */
+	enum pmclog_type  pl_type;	/* type of log entry */
+	union { 			/* log entry data */
+		struct pmclog_ev_closelog	pl_cl;
+		struct pmclog_ev_dropnotify	pl_dn;
+		struct pmclog_ev_initialize	pl_i;
+		struct pmclog_ev_mappingchange	pl_m;
+		struct pmclog_ev_pcsample	pl_s;
+		struct pmclog_ev_pmcallocate	pl_a;
+		struct pmclog_ev_pmcattach	pl_t;
+		struct pmclog_ev_pmcdetach	pl_d;
+		struct pmclog_ev_proccsw	pl_c;
+		struct pmclog_ev_procexec	pl_x;
+		struct pmclog_ev_procexit	pl_e;
+		struct pmclog_ev_procfork	pl_f;
+		struct pmclog_ev_sysexit	pl_se;
+		struct pmclog_ev_userdata	pl_u;
+	} pl_u;
+};
+
+#define	PMCLOG_FD_NONE				(-1)
+
+void	*pmclog_open(int _fd);
+int	pmclog_feed(void *_cookie, char *_data, int _len);
+int	pmclog_read(void *_cookie, struct pmclog_ev *_ev);
+void	pmclog_close(void *_cookie);
+
+#endif
+