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Commit 567e4793 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branches 'sched-urgent-for-linus', 'perf-urgent-for-linus' and... 

Merge branches 'sched-urgent-for-linus', 'perf-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/accounting, proc: Fix /proc/stat interrupts sum

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tracepoints/module: Fix disabling tracepoints with taint CRAP or OOT
  x86/kprobes: Add arch/x86/tools/insn_sanity to .gitignore
  x86/kprobes: Fix typo transferred from Intel manual

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits
  x86, tsc: Fix SMI induced variation in quick_pit_calibrate()
  x86, opcode: ANDN and Group 17 in x86-opcode-map.txt
  x86/kconfig: Move the ZONE_DMA entry under a menu
  x86/UV2: Add accounting for BAU strong nacks
  x86/UV2: Ack BAU interrupt earlier
  x86/UV2: Remove stale no-resources test for UV2 BAU
  x86/UV2: Work around BAU bug
  x86/UV2: Fix BAU destination timeout initialization
  x86/UV2: Fix new UV2 hardware by using native UV2 broadcast mode
  x86: Get rid of dubious one-bit signed bitfield
parents 99d1edc5 f7e6746e 6eadf107 4f2f81a5

arch/x86/.gitignore

+1 −0
Original line number Diff line number Diff line 
boot/compressed/vmlinux

tools/test_get_len

tools/insn_sanity

arch/x86/Kconfig

+10 −10
Original line number Diff line number Diff line
@@ -125,16 +125,6 @@ config HAVE_LATENCYTOP_SUPPORT 
config MMU

	def_bool y



config ZONE_DMA

	bool "DMA memory allocation support" if EXPERT

	default y

	help

	  DMA memory allocation support allows devices with less than 32-bit

	  addressing to allocate within the first 16MB of address space.

	  Disable if no such devices will be used.



	  If unsure, say Y.



config SBUS

	bool
@@ -255,6 +245,16 @@ source "kernel/Kconfig.freezer" 


menu "Processor type and features"



config ZONE_DMA

	bool "DMA memory allocation support" if EXPERT

	default y

	help

	  DMA memory allocation support allows devices with less than 32-bit

	  addressing to allocate within the first 16MB of address space.

	  Disable if no such devices will be used.



	  If unsure, say Y.



source "kernel/time/Kconfig"



config SMP

arch/x86/include/asm/unistd.h

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#  include <asm/unistd_32.h>

#  define __ARCH_WANT_IPC_PARSE_VERSION

#  define __ARCH_WANT_STAT64

#  define __ARCH_WANT_SYS_IPC

#  define __ARCH_WANT_SYS_OLD_MMAP

#  define __ARCH_WANT_SYS_OLD_SELECT

arch/x86/include/asm/uv/uv_bau.h

+99 −8
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ 
 * UV2: Bit 19 selects between

 *  (0): 10 microsecond timebase and

 *  (1): 80 microseconds

 *  we're using 655us, similar to UV1: 65 units of 10us

 *  we're using 560us, similar to UV1: 65 units of 10us

 */

#define UV1_INTD_SOFT_ACK_TIMEOUT_PERIOD (9UL)

#define UV2_INTD_SOFT_ACK_TIMEOUT_PERIOD (15UL)
@@ -167,6 +167,7 @@ 
#define FLUSH_RETRY_TIMEOUT		2

#define FLUSH_GIVEUP			3

#define FLUSH_COMPLETE			4

#define FLUSH_RETRY_BUSYBUG		5



/*

 * tuning the action when the numalink network is extremely delayed
@@ -235,10 +236,10 @@ struct bau_msg_payload { 




/*

 * Message header:  16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)

 * UV1 Message header:  16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)

 * see table 4.2.3.0.1 in broacast_assist spec.

 */

struct bau_msg_header {

struct uv1_bau_msg_header {

	unsigned int	dest_subnodeid:6;	/* must be 0x10, for the LB */

	/* bits 5:0 */

	unsigned int	base_dest_nasid:15;	/* nasid of the first bit */
@@ -317,6 +318,70 @@ struct bau_msg_header { 
	/* bits 127:107 */

};



/*

 * UV2 Message header:  16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)

 * see figure 9-2 of harp_sys.pdf

 */

struct uv2_bau_msg_header {

	unsigned int	base_dest_nasid:15;	/* nasid of the first bit */

	/* bits 14:0 */				/* in uvhub map */

	unsigned int	dest_subnodeid:5;	/* must be 0x10, for the LB */

	/* bits 19:15 */

	unsigned int	rsvd_1:1;		/* must be zero */

	/* bit 20 */

	/* Address bits 59:21 */

	/* bits 25:2 of address (44:21) are payload */

	/* these next 24 bits become bytes 12-14 of msg */

	/* bits 28:21 land in byte 12 */

	unsigned int	replied_to:1;		/* sent as 0 by the source to

						   byte 12 */

	/* bit 21 */

	unsigned int	msg_type:3;		/* software type of the

						   message */

	/* bits 24:22 */

	unsigned int	canceled:1;		/* message canceled, resource

						   is to be freed*/

	/* bit 25 */

	unsigned int	payload_1:3;		/* not currently used */

	/* bits 28:26 */



	/* bits 36:29 land in byte 13 */

	unsigned int	payload_2a:3;		/* not currently used */

	unsigned int	payload_2b:5;		/* not currently used */

	/* bits 36:29 */



	/* bits 44:37 land in byte 14 */

	unsigned int	payload_3:8;		/* not currently used */

	/* bits 44:37 */



	unsigned int	rsvd_2:7;		/* reserved */

	/* bits 51:45 */

	unsigned int	swack_flag:1;		/* software acknowledge flag */

	/* bit 52 */

	unsigned int	rsvd_3a:3;		/* must be zero */

	unsigned int	rsvd_3b:8;		/* must be zero */

	unsigned int	rsvd_3c:8;		/* must be zero */

	unsigned int	rsvd_3d:3;		/* must be zero */

	/* bits 74:53 */

	unsigned int	fairness:3;		/* usually zero */

	/* bits 77:75 */



	unsigned int	sequence:16;		/* message sequence number */

	/* bits 93:78  Suppl_A  */

	unsigned int	chaining:1;		/* next descriptor is part of

						   this activation*/

	/* bit 94 */

	unsigned int	multilevel:1;		/* multi-level multicast

						   format */

	/* bit 95 */

	unsigned int	rsvd_4:24;		/* ordered / source node /

						   source subnode / aging

						   must be zero */

	/* bits 119:96 */

	unsigned int	command:8;		/* message type */

	/* bits 127:120 */

};



/*

 * The activation descriptor:

 * The format of the message to send, plus all accompanying control
@@ -327,10 +392,14 @@ struct bau_desc { 
	/*

	 * message template, consisting of header and payload:

	 */

	struct bau_msg_header		header;

	union bau_msg_header {

		struct uv1_bau_msg_header	uv1_hdr;

		struct uv2_bau_msg_header	uv2_hdr;

	} header;



	struct bau_msg_payload			payload;

};

/*

/* UV1:

 *   -payload--    ---------header------

 *   bytes 0-11    bits 41-56  bits 58-81

 *       A           B  (2)      C (3)
@@ -340,6 +409,16 @@ struct bau_desc { 
 *   bytes 0-11  bytes 12-14  bytes 16-17  (byte 15 filled in by hw as vector)

 *   ------------payload queue-----------

 */

/* UV2:

 *   -payload--    ---------header------

 *   bytes 0-11    bits 70-78  bits 21-44

 *       A           B  (2)      C (3)

 *

 *            A/B/C are moved to:

 *       A            C          B

 *   bytes 0-11  bytes 12-14  bytes 16-17  (byte 15 filled in by hw as vector)

 *   ------------payload queue-----------

 */



/*

 * The payload queue on the destination side is an array of these.
@@ -385,7 +464,6 @@ struct bau_pq_entry { 
struct msg_desc {

	struct bau_pq_entry	*msg;

	int			msg_slot;

	int			swack_slot;

	struct bau_pq_entry	*queue_first;

	struct bau_pq_entry	*queue_last;

};
@@ -405,6 +483,7 @@ struct ptc_stats { 
						   requests */

	unsigned long	s_stimeout;		/* source side timeouts */

	unsigned long	s_dtimeout;		/* destination side timeouts */

	unsigned long	s_strongnacks;		/* number of strong nack's */

	unsigned long	s_time;			/* time spent in sending side */

	unsigned long	s_retriesok;		/* successful retries */

	unsigned long	s_ntargcpu;		/* total number of cpu's
@@ -439,6 +518,9 @@ struct ptc_stats { 
	unsigned long	s_retry_messages;	/* retry broadcasts */

	unsigned long	s_bau_reenabled;	/* for bau enable/disable */

	unsigned long	s_bau_disabled;		/* for bau enable/disable */

	unsigned long	s_uv2_wars;		/* uv2 workaround, perm. busy */

	unsigned long	s_uv2_wars_hw;		/* uv2 workaround, hiwater */

	unsigned long	s_uv2_war_waits;	/* uv2 workaround, long waits */

	/* destination statistics */

	unsigned long	d_alltlb;		/* times all tlb's on this

						   cpu were flushed */
@@ -511,9 +593,12 @@ struct bau_control { 
	short			osnode;

	short			uvhub_cpu;

	short			uvhub;

	short			uvhub_version;

	short			cpus_in_socket;

	short			cpus_in_uvhub;

	short			partition_base_pnode;

	short			using_desc; /* an index, like uvhub_cpu */

	unsigned int		inuse_map;

	unsigned short		message_number;

	unsigned short		uvhub_quiesce;

	short			socket_acknowledge_count[DEST_Q_SIZE];
@@ -531,6 +616,7 @@ struct bau_control { 
	int			cong_response_us;

	int			cong_reps;

	int			cong_period;

	unsigned long		clocks_per_100_usec;

	cycles_t		period_time;

	long			period_requests;

	struct hub_and_pnode	*thp;
@@ -591,6 +677,11 @@ static inline void write_mmr_sw_ack(unsigned long mr) 
	uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, mr);

}



static inline void write_gmmr_sw_ack(int pnode, unsigned long mr)

{

	write_gmmr(pnode, UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, mr);

}



static inline unsigned long read_mmr_sw_ack(void)

{

	return read_lmmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE);

arch/x86/kernel/tsc.c

+6 −8
Original line number Diff line number Diff line
@@ -290,14 +290,15 @@ static inline int pit_verify_msb(unsigned char val) 
static inline int pit_expect_msb(unsigned char val, u64 *tscp, unsigned long *deltap)

{

	int count;

	u64 tsc = 0;

	u64 tsc = 0, prev_tsc = 0;



	for (count = 0; count < 50000; count++) {

		if (!pit_verify_msb(val))

			break;

		prev_tsc = tsc;

		tsc = get_cycles();

	}

	*deltap = get_cycles() - tsc;

	*deltap = get_cycles() - prev_tsc;

	*tscp = tsc;



	/*
@@ -311,9 +312,9 @@ static inline int pit_expect_msb(unsigned char val, u64 *tscp, unsigned long *de 
 * How many MSB values do we want to see? We aim for

 * a maximum error rate of 500ppm (in practice the

 * real error is much smaller), but refuse to spend

 * more than 25ms on it.

 * more than 50ms on it.

 */

#define MAX_QUICK_PIT_MS 25

#define MAX_QUICK_PIT_MS 50

#define MAX_QUICK_PIT_ITERATIONS (MAX_QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)



static unsigned long quick_pit_calibrate(void)
@@ -383,15 +384,12 @@ success: 
	 *

	 * As a result, we can depend on there not being

	 * any odd delays anywhere, and the TSC reads are

	 * reliable (within the error). We also adjust the

	 * delta to the middle of the error bars, just

	 * because it looks nicer.

	 * reliable (within the error).

	 *

	 * kHz = ticks / time-in-seconds / 1000;

	 * kHz = (t2 - t1) / (I * 256 / PIT_TICK_RATE) / 1000

	 * kHz = ((t2 - t1) * PIT_TICK_RATE) / (I * 256 * 1000)

	 */

	delta += (long)(d2 - d1)/2;

	delta *= PIT_TICK_RATE;

	do_div(delta, i*256*1000);

	printk("Fast TSC calibration using PIT\n");