#ifndef _GNU_SOURCE # define _GNU_SOURCE #endif #include #include #include #include #include #include #include "fs.h" #include "tracing_path.h" char tracing_mnt[PATH_MAX] = "/sys/kernel/debug"; char tracing_path[PATH_MAX] = "/sys/kernel/debug/tracing"; char tracing_events_path[PATH_MAX] = "/sys/kernel/debug/tracing/events"; static void __tracing_path_set(const char *tracing, const char *mountpoint) { snprintf(tracing_mnt, sizeof(tracing_mnt), "%s", mountpoint); snprintf(tracing_path, sizeof(tracing_path), "%s/%s", mountpoint, tracing); snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s%s", mountpoint, tracing, "events"); } static const char *tracing_path_tracefs_mount(void) { const char *mnt; mnt = tracefs__mount(); if (!mnt) return NULL; __tracing_path_set("", mnt); return mnt; } static const char *tracing_path_debugfs_mount(void) { const char *mnt; mnt = debugfs__mount(); if (!mnt) return NULL; __tracing_path_set("tracing/", mnt); return mnt; } const char *tracing_path_mount(void) { const char *mnt; mnt = tracing_path_tracefs_mount(); if (mnt) return mnt; mnt = tracing_path_debugfs_mount(); return mnt; } void tracing_path_set(const char *mntpt) { __tracing_path_set("tracing/", mntpt); } char *get_tracing_file(const char *name) { char *file; if (asprintf(&file, "%s/%s", tracing_path, name) < 0) return NULL; return file; } void put_tracing_file(char *file) { free(file); } static int strerror_open(int err, char *buf, size_t size, const char *filename) { char sbuf[128]; switch (err) { case ENOENT: /* * We will get here if we can't find the tracepoint, but one of * debugfs or tracefs is configured, which means you probably * want some tracepoint which wasn't compiled in your kernel. * - jirka */ if (debugfs__configured() || tracefs__configured()) { snprintf(buf, size, "Error:\tFile %s/%s not found.\n" "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n", tracing_events_path, filename); break; } snprintf(buf, size, "%s", "Error:\tUnable to find debugfs/tracefs\n" "Hint:\tWas your kernel compiled with debugfs/tracefs support?\n" "Hint:\tIs the debugfs/tracefs filesystem mounted?\n" "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'"); break; case EACCES: { snprintf(buf, size, "Error:\tNo permissions to read %s/%s\n" "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n", tracing_events_path, filename, tracing_mnt); } break; default: snprintf(buf, size, "%s", str_error_r(err, sbuf, sizeof(sbuf))); break; } return 0; } int tracing_path__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name) { char path[PATH_MAX]; snprintf(path, PATH_MAX, "%s/%s", sys, name ?: "*"); return strerror_open(err, buf, size, path); } d912679d8864421ec'>perf/arch/parisc
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authorHelge Deller <deller@gmx.de>2017-01-28 11:52:02 +0100
committerHelge Deller <deller@gmx.de>2017-01-28 21:54:23 +0100
commit2ad5d52d42810bed95100a3d912679d8864421ec (patch)
tree7f93e2f906b1c86f5b76c0f4c0978d41a8a29861 /tools/perf/arch/parisc
parent83b5d1e3d3013dbf90645a5d07179d018c8243fa (diff)
parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
In swab.h the "#if BITS_PER_LONG > 32" breaks compiling userspace programs if BITS_PER_LONG is #defined by userspace with the sizeof() compiler builtin. Solve this problem by using __BITS_PER_LONG instead. Since we now #include asm/bitsperlong.h avoid further potential userspace pollution by moving the #define of SHIFT_PER_LONG to bitops.h which is not exported to userspace. This patch unbreaks compiling qemu on hppa/parisc. Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'tools/perf/arch/parisc')