#include "cache.h" #include "util.h" #include "config.h" static const char *alias_key; static char *alias_val; static int alias_lookup_cb(const char *k, const char *v, void *cb __maybe_unused) { if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) { if (!v) return config_error_nonbool(k); alias_val = strdup(v); return 0; } return 0; } char *alias_lookup(const char *alias) { alias_key = alias; alias_val = NULL; perf_config(alias_lookup_cb, NULL); return alias_val; } int split_cmdline(char *cmdline, const char ***argv) { int src, dst, count = 0, size = 16; char quoted = 0; *argv = malloc(sizeof(char*) * size); /* split alias_string */ (*argv)[count++] = cmdline; for (src = dst = 0; cmdline[src];) { char c = cmdline[src]; if (!quoted && isspace(c)) { cmdline[dst++] = 0; while (cmdline[++src] && isspace(cmdline[src])) ; /* skip */ if (count >= size) { size += 16; *argv = realloc(*argv, sizeof(char*) * size); } (*argv)[count++] = cmdline + dst; } else if (!quoted && (c == '\'' || c == '"')) { quoted = c; src++; } else if (c == quoted) { quoted = 0; src++; } else { if (c == '\\' && quoted != '\'') { src++; c = cmdline[src]; if (!c) { zfree(argv); return error("cmdline ends with \\"); } } cmdline[dst++] = c; src++; } } cmdline[dst] = 0; if (quoted) { zfree(argv); return error("unclosed quote"); } return count; } ngsTobias Klauser
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authorJoonyoung Shim <jy0922.shim@samsung.com>2017-01-17 13:54:36 +0900
committerThomas Gleixner <tglx@linutronix.de>2017-01-17 10:08:38 +0100
commitbc7c36eedb0c7004aa06c2afc3c5385adada8fa3 (patch)
tree14ce1ae3cce8013aa4bc46297f6370ec0527be78 /include/crypto/internal/acompress.h
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
clocksource/exynos_mct: Clear interrupt when cpu is shut down
When a CPU goes offline a potentially pending timer interrupt is not cleared. When the CPU comes online again then the pending interrupt is delivered before the per cpu clockevent device is initialized. As a consequence the tick interrupt handler dereferences a NULL pointer. [ 51.251378] Unable to handle kernel NULL pointer dereference at virtual address 00000040 [ 51.289348] task: ee942d00 task.stack: ee960000 [ 51.293861] PC is at tick_periodic+0x38/0xb0 [ 51.298102] LR is at tick_handle_periodic+0x1c/0x90 Clear the pending interrupt in the cpu dying path. Fixes: 56a94f13919c ("clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier") Reported-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Cc: linux-samsung-soc@vger.kernel.org Cc: cw00.choi@samsung.com Cc: daniel.lezcano@linaro.org Cc: stable@vger.kernel.org Cc: javier@osg.samsung.com Cc: kgene@kernel.org Cc: krzk@kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1484628876-22065-1-git-send-email-jy0922.shim@samsung.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/crypto/internal/acompress.h')