Release 4.7 drivers/hv/hv.c

/*
 * Copyright (c) 2009, Microsoft Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 *
 * Authors:
 *   Haiyang Zhang <haiyangz@microsoft.com>
 *   Hank Janssen  <hjanssen@microsoft.com>
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/hyperv.h>
#include <linux/version.h>
#include <linux/interrupt.h>
#include <linux/clockchips.h>
#include <asm/hyperv.h>
#include <asm/mshyperv.h>
#include "hyperv_vmbus.h"

/* The one and only */

struct hv_context hv_context = {
	.synic_initialized	= false,
	.hypercall_page		= NULL,
};


#define HV_TIMER_FREQUENCY (10 * 1000 * 1000) 
/* 100ns period */

#define HV_MAX_MAX_DELTA_TICKS 0xffffffff

#define HV_MIN_DELTA_TICKS 1

/*
 * query_hypervisor_info - Get version info of the windows hypervisor
 */

unsigned int host_info_eax;

unsigned int host_info_ebx;

unsigned int host_info_ecx;

unsigned int host_info_edx;



static int query_hypervisor_info(void)
{
	unsigned int eax;
	unsigned int ebx;
	unsigned int ecx;
	unsigned int edx;
	unsigned int max_leaf;
	unsigned int op;

	/*
        * Its assumed that this is called after confirming that Viridian
        * is present. Query id and revision.
        */
	eax = 0;
	ebx = 0;
	ecx = 0;
	edx = 0;
	op = HVCPUID_VENDOR_MAXFUNCTION;
	cpuid(op, &eax, &ebx, &ecx, &edx);

	max_leaf = eax;

	if (max_leaf >= HVCPUID_VERSION) {
		eax = 0;
		ebx = 0;
		ecx = 0;
		edx = 0;
		op = HVCPUID_VERSION;
		cpuid(op, &eax, &ebx, &ecx, &edx);
		host_info_eax = eax;
		host_info_ebx = ebx;
		host_info_ecx = ecx;
		host_info_edx = edx;
	}
	return max_leaf;
}

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hank janssen
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ky srinivasan
16
11.59%
1
14.29%
haiyang zhang
haiyang zhang
8
5.80%
3
42.86%
greg kroah-hartman
greg kroah-hartman
3
2.17%
2
28.57%
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138
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7
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/*
 * hv_do_hypercall- Invoke the specified hypercall
 */


u64 hv_do_hypercall(u64 control, void *input, void *output)
{
	u64 input_address = (input) ? virt_to_phys(input) : 0;
	u64 output_address = (output) ? virt_to_phys(output) : 0;
	void *hypercall_page = hv_context.hypercall_page;
#ifdef CONFIG_X86_64
	u64 hv_status = 0;

	if (!hypercall_page)
		return (u64)ULLONG_MAX;

	__asm__ __volatile__("mov %0, %%r8" : : "r" (output_address) : "r8");
	__asm__ __volatile__("call *%3" : "=a" (hv_status) :
                             "c" (control), "d" (input_address),
                             "m" (hypercall_page));

	return hv_status;

#else

	u32 control_hi = control >> 32;
	u32 control_lo = control & 0xFFFFFFFF;
	u32 hv_status_hi = 1;
	u32 hv_status_lo = 1;
	u32 input_address_hi = input_address >> 32;
	u32 input_address_lo = input_address & 0xFFFFFFFF;
	u32 output_address_hi = output_address >> 32;
	u32 output_address_lo = output_address & 0xFFFFFFFF;

	if (!hypercall_page)
		return (u64)ULLONG_MAX;

	__asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
                              "=a"(hv_status_lo) : "d" (control_hi),
                              "a" (control_lo), "b" (input_address_hi),
                              "c" (input_address_lo), "D"(output_address_hi),
                              "S"(output_address_lo), "m" (hypercall_page));

	return hv_status_lo | ((u64)hv_status_hi << 32);
#endif /* !x86_64 */
}
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hank janssen
84
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haiyang zhang
33
20.25%
2
22.22%
vitaly kuznetsov
vitaly kuznetsov
29
17.79%
1
11.11%
greg kroah-hartman
greg kroah-hartman
16
9.82%
4
44.44%
jake oshins
jake oshins
1
0.61%
1
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163
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9
100.00%


EXPORT_SYMBOL_GPL(hv_do_hypercall);

#ifdef CONFIG_X86_64


static cycle_t read_hv_clock_tsc(struct clocksource *arg)
{
	cycle_t current_tick;
	struct ms_hyperv_tsc_page *tsc_pg = hv_context.tsc_page;

	if (tsc_pg->tsc_sequence != 0) {
		/*
                 * Use the tsc page to compute the value.
                 */

		while (1) {
			cycle_t tmp;
			u32 sequence = tsc_pg->tsc_sequence;
			u64 cur_tsc;
			u64 scale = tsc_pg->tsc_scale;
			s64 offset = tsc_pg->tsc_offset;

			rdtscll(cur_tsc);
			/* current_tick = ((cur_tsc *scale) >> 64) + offset */
			asm("mulq %3"
                                : "=d" (current_tick), "=a" (tmp)
                                : "a" (cur_tsc), "r" (scale));

			current_tick += offset;
			if (tsc_pg->tsc_sequence == sequence)
				return current_tick;

			if (tsc_pg->tsc_sequence != 0)
				continue;
			/*
                         * Fallback using MSR method.
                         */
			break;
		}
	}
	rdmsrl(HV_X64_MSR_TIME_REF_COUNT, current_tick);
	return current_tick;
}

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static struct clocksource hyperv_cs_tsc = {
		.name           = "hyperv_clocksource_tsc_page",
		.rating         = 425,
		.read           = read_hv_clock_tsc,
		.mask           = CLOCKSOURCE_MASK(64),
		.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
};
#endif


/*
 * hv_init - Main initialization routine.
 *
 * This routine must be called before any other routines in here are called
 */


int hv_init(void)
{
	int max_leaf;
	union hv_x64_msr_hypercall_contents hypercall_msr;
	void *virtaddr = NULL;

	memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS);
	memset(hv_context.synic_message_page, 0,
	       sizeof(void *) * NR_CPUS);
	memset(hv_context.post_msg_page, 0,
	       sizeof(void *) * NR_CPUS);
	memset(hv_context.vp_index, 0,
	       sizeof(int) * NR_CPUS);
	memset(hv_context.event_dpc, 0,
	       sizeof(void *) * NR_CPUS);
	memset(hv_context.msg_dpc, 0,
	       sizeof(void *) * NR_CPUS);
	memset(hv_context.clk_evt, 0,
	       sizeof(void *) * NR_CPUS);

	max_leaf = query_hypervisor_info();

	/*
         * Write our OS ID.
         */
	hv_context.guestid = generate_guest_id(0, LINUX_VERSION_CODE, 0);
	wrmsrl(HV_X64_MSR_GUEST_OS_ID, hv_context.guestid);

	/* See if the hypercall page is already set */
	rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);

	virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC);

	if (!virtaddr)
		goto cleanup;

	hypercall_msr.enable = 1;

	hypercall_msr.guest_physical_address = vmalloc_to_pfn(virtaddr);
	wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);

	/* Confirm that hypercall page did get setup. */
	hypercall_msr.as_uint64 = 0;
	rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);

	if (!hypercall_msr.enable)
		goto cleanup;

	hv_context.hypercall_page = virtaddr;

#ifdef CONFIG_X86_64
	if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) {
		union hv_x64_msr_hypercall_contents tsc_msr;
		void *va_tsc;

		va_tsc = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL);
		if (!va_tsc)
			goto cleanup;
		hv_context.tsc_page = va_tsc;

		rdmsrl(HV_X64_MSR_REFERENCE_TSC, tsc_msr.as_uint64);

		tsc_msr.enable = 1;
		tsc_msr.guest_physical_address = vmalloc_to_pfn(va_tsc);

		wrmsrl(HV_X64_MSR_REFERENCE_TSC, tsc_msr.as_uint64);
		clocksource_register_hz(&hyperv_cs_tsc, NSEC_PER_SEC/100);
	}
#endif
	return 0;

cleanup:
	if (virtaddr) {
		if (hypercall_msr.enable) {
			hypercall_msr.as_uint64 = 0;
			wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
		}

		vfree(virtaddr);
	}

	return -ENOTSUPP;
}

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ky srinivasan
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hank janssen
115
29.87%
1
4.00%
haiyang zhang
haiyang zhang
39
10.13%
4
16.00%
greg kroah-hartman
greg kroah-hartman
15
3.90%
5
20.00%
sudip mukherjee
sudip mukherjee
8
2.08%
1
4.00%
bill pemberton
bill pemberton
7
1.82%
3
12.00%
Total
385
100.00%
25
100.00%

/*
 * hv_cleanup - Cleanup routine.
 *
 * This routine is called normally during driver unloading or exiting.
 */


void hv_cleanup(void)
{
	union hv_x64_msr_hypercall_contents hypercall_msr;

	/* Reset our OS id */
	wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);

	if (hv_context.hypercall_page) {
		hypercall_msr.as_uint64 = 0;
		wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
		vfree(hv_context.hypercall_page);
		hv_context.hypercall_page = NULL;
	}

#ifdef CONFIG_X86_64
	/*
         * Cleanup the TSC page based CS.
         */
	if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) {
		/*
                 * Crash can happen in an interrupt context and unregistering
                 * a clocksource is impossible and redundant in this case.
                 */
		if (!oops_in_progress) {
			clocksource_change_rating(&hyperv_cs_tsc, 10);
			clocksource_unregister(&hyperv_cs_tsc);
		}

		hypercall_msr.as_uint64 = 0;
		wrmsrl(HV_X64_MSR_REFERENCE_TSC, hypercall_msr.as_uint64);
		vfree(hv_context.tsc_page);
		hv_context.tsc_page = NULL;
	}
#endif
}

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ky srinivasan
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hank janssen
30
24.79%
1
8.33%
haiyang zhang
haiyang zhang
12
9.92%
4
33.33%
vitaly kuznetsov
vitaly kuznetsov
8
6.61%
1
8.33%
greg kroah-hartman
greg kroah-hartman
4
3.31%
3
25.00%
bill pemberton
bill pemberton
1
0.83%
1
8.33%
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121
100.00%
12
100.00%

/*
 * hv_post_message - Post a message using the hypervisor message IPC.
 *
 * This involves a hypercall.
 */


int hv_post_message(union hv_connection_id connection_id,
		  enum hv_message_type message_type,
		  void *payload, size_t payload_size)
{

	struct hv_input_post_message *aligned_msg;
	u64 status;

	if (payload_size > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
		return -EMSGSIZE;

	aligned_msg = (struct hv_input_post_message *)
			hv_context.post_msg_page[get_cpu()];

	aligned_msg->connectionid = connection_id;
	aligned_msg->reserved = 0;
	aligned_msg->message_type = message_type;
	aligned_msg->payload_size = payload_size;
	memcpy((void *)aligned_msg->payload, payload, payload_size);

	status = hv_do_hypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL);

	put_cpu();
	return status & 0xFFFF;
}

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hank janssen
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haiyang zhang
21
18.92%
3
23.08%
greg kroah-hartman
greg kroah-hartman
16
14.41%
5
38.46%
ky srinivasan
ky srinivasan
16
14.41%
2
15.38%
jake oshins
jake oshins
4
3.60%
1
7.69%
dan carpenter
dan carpenter
1
0.90%
1
7.69%
Total
111
100.00%
13
100.00%



static int hv_ce_set_next_event(unsigned long delta,
				struct clock_event_device *evt)
{
	cycle_t current_tick;

	WARN_ON(!clockevent_state_oneshot(evt));

	rdmsrl(HV_X64_MSR_TIME_REF_COUNT, current_tick);
	current_tick += delta;
	wrmsrl(HV_X64_MSR_STIMER0_COUNT, current_tick);
	return 0;
}

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ky srinivasan
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4
8.33%
1
50.00%
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48
100.00%
2
100.00%



static int hv_ce_shutdown(struct clock_event_device *evt)
{
	wrmsrl(HV_X64_MSR_STIMER0_COUNT, 0);
	wrmsrl(HV_X64_MSR_STIMER0_CONFIG, 0);

	return 0;
}

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viresh kumar
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ky srinivasan
1
3.57%
1
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28
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2
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static int hv_ce_set_oneshot(struct clock_event_device *evt)
{
	union hv_timer_config timer_cfg;

	timer_cfg.enable = 1;
	timer_cfg.auto_enable = 1;
	timer_cfg.sintx = VMBUS_MESSAGE_SINT;
	wrmsrl(HV_X64_MSR_STIMER0_CONFIG, timer_cfg.as_uint64);

	return 0;
}

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1
50.00%
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45
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2
100.00%



static void hv_init_clockevent_device(struct clock_event_device *dev, int cpu)
{
	dev->name = "Hyper-V clockevent";
	dev->features = CLOCK_EVT_FEAT_ONESHOT;
	dev->cpumask = cpumask_of(cpu);
	dev->rating = 1000;
	/*
         * Avoid settint dev->owner = THIS_MODULE deliberately as doing so will
         * result in clockevents_config_and_register() taking additional
         * references to the hv_vmbus module making it impossible to unload.
         */

	dev->set_state_shutdown = hv_ce_shutdown;
	dev->set_state_oneshot = hv_ce_set_oneshot;
	dev->set_next_event = hv_ce_set_next_event;
}


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13.33%
1
33.33%
vitaly kuznetsov
vitaly kuznetsov
1
1.67%
1
33.33%
Total
60
100.00%
3
100.00%



int hv_synic_alloc(void)
{
	size_t size = sizeof(struct tasklet_struct);
	size_t ced_size = sizeof(struct clock_event_device);
	int cpu;

	hv_context.hv_numa_map = kzalloc(sizeof(struct cpumask) * nr_node_ids,
					 GFP_ATOMIC);
	if (hv_context.hv_numa_map == NULL) {
		pr_err("Unable to allocate NUMA map\n");
		goto err;
	}

	for_each_online_cpu(cpu) {
		hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC);
		if (hv_context.event_dpc[cpu] == NULL) {
			pr_err("Unable to allocate event dpc\n");
			goto err;
		}
		tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu);

		hv_context.msg_dpc[cpu] = kmalloc(size, GFP_ATOMIC);
		if (hv_context.msg_dpc[cpu] == NULL) {
			pr_err("Unable to allocate event dpc\n");
			goto err;
		}
		tasklet_init(hv_context.msg_dpc[cpu], vmbus_on_msg_dpc, cpu);

		hv_context.clk_evt[cpu] = kzalloc(ced_size, GFP_ATOMIC);
		if (hv_context.clk_evt[cpu] == NULL) {
			pr_err("Unable to allocate clock event device\n");
			goto err;
		}

		hv_init_clockevent_device(hv_context.clk_evt[cpu], cpu);

		hv_context.synic_message_page[cpu] =
			(void *)get_zeroed_page(GFP_ATOMIC);

		if (hv_context.synic_message_page[cpu] == NULL) {
			pr_err("Unable to allocate SYNIC message page\n");
			goto err;
		}

		hv_context.synic_event_page[cpu] =
			(void *)get_zeroed_page(GFP_ATOMIC);

		if (hv_context.synic_event_page[cpu] == NULL) {
			pr_err("Unable to allocate SYNIC event page\n");
			goto err;
		}

		hv_context.post_msg_page[cpu] =
			(void *)get_zeroed_page(GFP_ATOMIC);

		if (hv_context.post_msg_page[cpu] == NULL) {
			pr_err("Unable to allocate post msg page\n");
			goto err;
		}
	}

	return 0;
err:
	return -ENOMEM;
}

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16.47%
2
18.18%
jason wang
jason wang
28
8.38%
1
9.09%
greg kroah-hartman
greg kroah-hartman
18
5.39%
1
9.09%
haiyang zhang
haiyang zhang
8
2.40%
1
9.09%
Total
334
100.00%
11
100.00%



static void hv_synic_free_cpu(int cpu)
{
	kfree(hv_context.event_dpc[cpu]);
	kfree(hv_context.msg_dpc[cpu]);
	kfree(hv_context.clk_evt[cpu]);
	if (hv_context.synic_event_page[cpu])
		free_page((unsigned long)hv_context.synic_event_page[cpu]);
	if (hv_context.synic_message_page[cpu])
		free_page((unsigned long)hv_context.synic_message_page[cpu]);
	if (hv_context.post_msg_page[cpu])
		free_page((unsigned long)hv_context.post_msg_page[cpu]);
}

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39.81%
3
50.00%
felipe pena
felipe pena
1
0.93%
1
16.67%
rashika kheria
rashika kheria
1
0.93%
1
16.67%
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108
100.00%
6
100.00%



void hv_synic_free(void)
{
	int cpu;

	kfree(hv_context.hv_numa_map);
	for_each_online_cpu(cpu)
		hv_synic_free_cpu(cpu);
}

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/*
 * hv_synic_init - Initialize the Synthethic Interrupt Controller.
 *
 * If it is already initialized by another entity (ie x2v shim), we need to
 * retrieve the initialized message and event pages.  Otherwise, we create and
 * initialize the message and event pages.
 */


void hv_synic_init(void *arg)
{
	u64 version;
	union hv_synic_simp simp;
	union hv_synic_siefp siefp;
	union hv_synic_sint shared_sint;
	union hv_synic_scontrol sctrl;
	u64 vp_index;

	int cpu = smp_processor_id();

	if (!hv_context.hypercall_page)
		return;

	/* Check the version */
	rdmsrl(HV_X64_MSR_SVERSION, version);

	/* Setup the Synic's message page */
	rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
	simp.simp_enabled = 1;
	simp.base_simp_gpa = virt_to_phys(hv_context.synic_message_page[cpu])
		>> PAGE_SHIFT;

	wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64);

	/* Setup the Synic's event page */
	rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
	siefp.siefp_enabled = 1;
	siefp.base_siefp_gpa = virt_to_phys(hv_context.synic_event_page[cpu])
		>> PAGE_SHIFT;

	wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	/* Setup the shared SINT. */
	rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	shared_sint.as_uint64 = 0;
	shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
	shared_sint.masked = false;
	shared_sint.auto_eoi = true;

	wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	/* Enable the global synic bit */
	rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
	sctrl.enable = 1;

	wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);

	hv_context.synic_initialized = true;

	/*
         * Setup the mapping between Hyper-V's notion
         * of cpuid and Linux' notion of cpuid.
         * This array will be indexed using Linux cpuid.
         */
	rdmsrl(HV_X64_MSR_VP_INDEX, vp_index);
	hv_context.vp_index[cpu] = (u32)vp_index;

	INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);

	/*
         * Register the per-cpu clockevent source.
         */
	if (ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE)
		clockevents_config_and_register(hv_context.clk_evt[cpu],
						HV_TIMER_FREQUENCY,
						HV_MIN_DELTA_TICKS,
						HV_MAX_MAX_DELTA_TICKS);
	return;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
hank janssen
hank janssen
101
37.41%
1
6.67%
ky srinivasan
ky srinivasan
58
21.48%
5
33.33%
jason wang
jason wang
52
19.26%
1
6.67%
haiyang zhang
haiyang zhang
29
10.74%
3
20.00%
greg kroah-hartman
greg kroah-hartman
26
9.63%
4
26.67%
bill pemberton
bill pemberton
4
1.48%
1
6.67%
Total
270
100.00%
15
100.00%

/*
 * hv_synic_clockevents_cleanup - Cleanup clockevent devices
 */


void hv_synic_clockevents_cleanup(void)
{
	int cpu;

	if (!(ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE))
		return;

	for_each_online_cpu(cpu)
		clockevents_unbind_device(hv_context.clk_evt[cpu], cpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
vitaly kuznetsov
vitaly kuznetsov
38
100.00%
1
100.00%
Total
38
100.00%
1
100.00%

/*
 * hv_synic_cleanup - Cleanup routine for hv_synic_init().
 */


void hv_synic_cleanup(void *arg)
{
	union hv_synic_sint shared_sint;
	union hv_synic_simp simp;
	union hv_synic_siefp siefp;
	union hv_synic_scontrol sctrl;
	int cpu = smp_processor_id();

	if (!hv_context.synic_initialized)
		return;

	/* Turn off clockevent device */
	if (ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE)
		hv_ce_shutdown(hv_context.clk_evt[cpu]);

	rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	shared_sint.masked = 1;

	/* Need to correctly cleanup in the case of SMP!!! */
	/* Disable the interrupt */
	wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

	rdmsrl(HV_X64_MSR_SIMP, simp.as_uint64);
	simp.simp_enabled = 0;
	simp.base_simp_gpa = 0;

	wrmsrl(HV_X64_MSR_SIMP, simp.as_uint64);

	rdmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);
	siefp.siefp_enabled = 0;
	siefp.base_siefp_gpa = 0;

	wrmsrl(HV_X64_MSR_SIEFP, siefp.as_uint64);

	/* Disable the global synic bit */
	rdmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
	sctrl.enable = 0;
	wrmsrl(HV_X64_MSR_SCONTROL, sctrl.as_uint64);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
hank janssen
hank janssen
81
46.82%
1
7.14%
vitaly kuznetsov
vitaly kuznetsov
41
23.70%
2
14.29%
greg kroah-hartman
greg kroah-hartman
31
17.92%
5
35.71%
haiyang zhang
haiyang zhang
18
10.40%
4
28.57%
bill pemberton
bill pemberton
1
0.58%
1
7.14%
viresh kumar
viresh kumar
1
0.58%
1
7.14%
Total
173
100.00%
14
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
ky srinivasan
ky srinivasan
960
41.78%
20
32.26%
hank janssen
hank janssen
649
28.24%
2
3.23%
haiyang zhang
haiyang zhang
176
7.66%
4
6.45%
jason wang
jason wang
163
7.09%
1
1.61%
greg kroah-hartman
greg kroah-hartman
144
6.27%
20
32.26%
vitaly kuznetsov
vitaly kuznetsov
118
5.13%
4
6.45%
viresh kumar
viresh kumar
45
1.96%
1
1.61%
bill pemberton
bill pemberton
16
0.70%
3
4.84%
jake oshins
jake oshins
11
0.48%
1
1.61%
sudip mukherjee
sudip mukherjee
8
0.35%
1
1.61%
tejun heo
tejun heo
3
0.13%
1
1.61%
andrey smetanin
andrey smetanin
2
0.09%
1
1.61%
dan carpenter
dan carpenter
1
0.04%
1
1.61%
rashika kheria
rashika kheria
1
0.04%
1
1.61%
felipe pena
felipe pena
1
0.04%
1
1.61%
Total
2298
100.00%
62
100.00%
  
Directory: drivers/hv

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