#include #include #include #include #include #include #include #include #include "irq.h" #include "str.h" #include "die.h" int device_irq_number(const char *ifname) { int irq = 0; char buff[128], sysname[128]; FILE *fp; if (!strncmp("lo", ifname, strlen("lo"))) return 0; slprintf(sysname, sizeof(sysname), "/sys/class/net/%s/device/irq", ifname); fp = fopen(sysname, "r"); if (!fp) return -ENOENT; memset(buff, 0, sizeof(buff)); if (fgets(buff, sizeof(buff), fp) != NULL) { buff[sizeof(buff) - 1] = 0; irq = atoi(buff); } fclose(fp); return irq; } static char nic_irq_affinity_list[128]; static bool nic_irq_stored = false; static int nic_irq = -1; static void device_save_irq_affinity_list(void) { int ret, fd; char file[128]; bug_on(nic_irq_stored); slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", nic_irq); fd = open(file, O_RDONLY); if (fd < 0) return; memset(nic_irq_affinity_list, 0, sizeof(nic_irq_affinity_list)); ret = read(fd, nic_irq_affinity_list, sizeof(nic_irq_affinity_list)); if (ret < 0) panic("Cannot store NIC IRQ affinity!\n"); close(fd); nic_irq_stored = true; } void device_restore_irq_affinity_list(void) { int ret, fd; char file[128]; if (!nic_irq_stored) return; bug_on(nic_irq == -1); slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", nic_irq); fd = open(file, O_WRONLY); if (fd < 0) return; ret = write(fd, nic_irq_affinity_list, sizeof(nic_irq_affinity_list)); if (ret < 0) panic("Cannot restore NIC IRQ affinity!\n"); close(fd); } int device_set_irq_affinity_list(int irq, unsigned long from, unsigned long to) { int ret, fd; char file[128], list[64]; if (unlikely(irq == 0)) return 0; if (!nic_irq_stored) { nic_irq = irq; device_save_irq_affinity_list(); } slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", irq); slprintf(list, sizeof(list), "%lu-%lu\n", from, to); fd = open(file, O_WRONLY); if (fd < 0) return -ENOENT; ret = write(fd, list, strlen(list)); close(fd); return ret; } int device_set_irq_affinity(int irq, unsigned long cpu) { return device_set_irq_affinity_list(irq, cpu, cpu); } ut type='hidden' name='h' value='nds-private-remove'/>

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author	Konstantin Khlebnikov <khlebnikov@yandex-team.ru>	2016-08-05 15:22:36 +0300
committer	Arnaldo Carvalho de Melo <acme@redhat.com>	2016-08-09 10:48:09 -0300
commit	cb3f3378cd09aa3fe975b4ad5ee0229dc76315bb (patch)
tree	c484ff0676fe81b0a85b2645bcfbe93cc716cf86
parent	8e34189b347d76acf48ce05831176582201b664d (diff)

perf probe: Fix module name matching

If module is "module" then dso->short_name is "[module]". Substring comparing is't enough: "raid10" matches to "[raid1]". This patch also checks terminating zero in module name. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: http://lkml.kernel.org/r/147039975648.715620.12985971832789032159.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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