[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 22 of 25] xenpm: use hypercall buffers
# HG changeset patch # User Ian Campbell <ian.campbell@xxxxxxxxxx> # Date 1287756891 -3600 # Node ID de7310bdfe91d9356d5c6fca92daa93f07ab4fb5 # Parent 5daeac9c13b0d728d93e9e30b53bb70bd5e81ee2 xenpm: use hypercall buffers. Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> diff -r 5daeac9c13b0 -r de7310bdfe91 tools/misc/xenpm.c --- a/tools/misc/xenpm.c Fri Oct 22 15:14:51 2010 +0100 +++ b/tools/misc/xenpm.c Fri Oct 22 15:14:51 2010 +0100 @@ -317,15 +317,25 @@ static void signal_int_handler(int signo int i, j, k, ret; struct timeval tv; int cx_cap = 0, px_cap = 0; - uint32_t cpu_to_core[MAX_NR_CPU]; - uint32_t cpu_to_socket[MAX_NR_CPU]; - uint32_t cpu_to_node[MAX_NR_CPU]; + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_core); + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_socket); + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_node); xc_topologyinfo_t info = { 0 }; + + cpu_to_core = xc_hypercall_buffer_alloc(xc_handle, cpu_to_core, sizeof(*cpu_to_core) * MAX_NR_CPU); + cpu_to_socket = xc_hypercall_buffer_alloc(xc_handle, cpu_to_socket, sizeof(*cpu_to_socket) * MAX_NR_CPU); + cpu_to_node = xc_hypercall_buffer_alloc(xc_handle, cpu_to_node, sizeof(*cpu_to_node) * MAX_NR_CPU); + + if ( cpu_to_core == NULL || cpu_to_socket == NULL || cpu_to_node == NULL ) + { + fprintf(stderr, "failed to allocate hypercall buffers\n"); + goto out; + } if ( gettimeofday(&tv, NULL) == -1 ) { fprintf(stderr, "failed to get timeofday\n"); - return ; + goto out ; } usec_end = tv.tv_sec * 1000000UL + tv.tv_usec; @@ -385,9 +395,9 @@ static void signal_int_handler(int signo } } - set_xen_guest_handle(info.cpu_to_core, cpu_to_core); - set_xen_guest_handle(info.cpu_to_socket, cpu_to_socket); - set_xen_guest_handle(info.cpu_to_node, cpu_to_node); + xc_set_xen_guest_handle(info.cpu_to_core, cpu_to_core); + xc_set_xen_guest_handle(info.cpu_to_socket, cpu_to_socket); + xc_set_xen_guest_handle(info.cpu_to_node, cpu_to_node); info.max_cpu_index = MAX_NR_CPU - 1; ret = xc_topologyinfo(xc_handle, &info); @@ -485,6 +495,10 @@ static void signal_int_handler(int signo free(pxstat); free(sum); free(avgfreq); +out: + xc_hypercall_buffer_free(xc_handle, cpu_to_core); + xc_hypercall_buffer_free(xc_handle, cpu_to_socket); + xc_hypercall_buffer_free(xc_handle, cpu_to_node); xc_interface_close(xc_handle); exit(0); } @@ -934,21 +948,31 @@ out: void cpu_topology_func(int argc, char *argv[]) { - uint32_t cpu_to_core[MAX_NR_CPU]; - uint32_t cpu_to_socket[MAX_NR_CPU]; - uint32_t cpu_to_node[MAX_NR_CPU]; + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_core); + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_socket); + DECLARE_HYPERCALL_BUFFER(uint32_t, cpu_to_node); xc_topologyinfo_t info = { 0 }; int i; - set_xen_guest_handle(info.cpu_to_core, cpu_to_core); - set_xen_guest_handle(info.cpu_to_socket, cpu_to_socket); - set_xen_guest_handle(info.cpu_to_node, cpu_to_node); + cpu_to_core = xc_hypercall_buffer_alloc(xc_handle, cpu_to_core, sizeof(*cpu_to_core) * MAX_NR_CPU); + cpu_to_socket = xc_hypercall_buffer_alloc(xc_handle, cpu_to_socket, sizeof(*cpu_to_socket) * MAX_NR_CPU); + cpu_to_node = xc_hypercall_buffer_alloc(xc_handle, cpu_to_node, sizeof(*cpu_to_node) * MAX_NR_CPU); + + if ( cpu_to_core == NULL || cpu_to_socket == NULL || cpu_to_node == NULL ) + { + fprintf(stderr, "failed to allocate hypercall buffers\n"); + goto out; + } + + xc_set_xen_guest_handle(info.cpu_to_core, cpu_to_core); + xc_set_xen_guest_handle(info.cpu_to_socket, cpu_to_socket); + xc_set_xen_guest_handle(info.cpu_to_node, cpu_to_node); info.max_cpu_index = MAX_NR_CPU-1; if ( xc_topologyinfo(xc_handle, &info) ) { printf("Can not get Xen CPU topology: %d\n", errno); - return; + goto out; } if ( info.max_cpu_index > (MAX_NR_CPU-1) ) @@ -962,6 +986,10 @@ void cpu_topology_func(int argc, char *a printf("CPU%d\t %d\t %d\t %d\n", i, cpu_to_core[i], cpu_to_socket[i], cpu_to_node[i]); } +out: + xc_hypercall_buffer_free(xc_handle, cpu_to_core); + xc_hypercall_buffer_free(xc_handle, cpu_to_socket); + xc_hypercall_buffer_free(xc_handle, cpu_to_node); } void set_sched_smt_func(int argc, char *argv[]) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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